Answer:
detail is given below
Explanation:
We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus. Electron has a negative charge and is written as e⁻. Proton has positive charge P⁺ and neutron is neutral n⁰ .
The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons. The number of protons and electrons are always equal to make the atom electrically neutral and when an atom loses its valance electron the number of protons increases and thus positive charge increased and atom form cation.
Cation formation:
X → X⁺ + e⁻
When an atom gain electron negative charge increase because of more number of electron thus atom form negative ion or anion.
Anion formation:
X + e⁻ → X⁻
1) If an atom loses an electron, it becomes... (positive ion)
2) If an atom gains an electron, it becomes... (negative ion)
3) A hydrogen atom loses an electron. It becomes...(positive ion)
4) A sodium ion (Na) can ionically bond with which?
Sodium ion (Na⁺) can ionically bonded with Cl⁻ , thus both form salt which sodium chloride. Sodium ion can not bonded with hydrogen and potassium because both are also form cation.
5) If an atom gains or loses a neutron, the charge of that atom changes.
The given statement is false because neutron is neutral so when it added or removed from an atom there will be no effect on charge.
6. If an atom gains or loses an electron, the atomic mass of that atom changes.
The given statement is also false because atomic mass is sum of number of neutron and protons. So when electron is added or lost by an atom there will be no effect on atomic mass.
7. If an atom gains or loses a neutron, the atomic mass of that atom changes.
The given statement is true. Atomic mass is sum of number of neutron and protons. So when neutron is added or lost by an atom there will be effect on atomic mass. The atomic mass will be increase or decreased.
8. An atom with valence electrons can covalently bond with another atom.
The given statement is true. The valance electrons of an atom are involved in bonding. It could ionic, covalent or any other type.
A person with anti-A and anti-B antibodies in their blood has what blood type?А. type AВ. type BС. type ABD. type 0
The answer is the letter D. type O
The blood type O contains both the anti-A and anti-B antibodies in their plasma. Antigens are protein molecules that are found on the surface of red blood cells and they are involved in the natural defense of the body. They have the ability to recognize foreign substances including germs and aerts the
Most digestion in humans occurs in the first 25 centimeters of the 6-meter length of the small intestine called the _________________.
Most digestion in humans occurs in the first 25 centimeters of the 6-meter length of the small intestine called the duodenum.
What is digestion?In order to be absorbed into the watery blood plasma, large, insoluble food molecules must be broken down into smaller, water-soluble food molecules during digestion. These tiny molecules enter the bloodstream through the small intestine in some organisms. Based on how food is broken down, digestion, a type of catabolism, is sometimes separated into two processes: mechanical digestion and chemical digestion.
When a huge food item is physically broken down into smaller bits so that digestive enzymes may reach them, this process is referred to as mechanical digestion. Mastication in the mouth and segmentation contractions in the small intestine are two examples of mechanical digestion. Enzymes break down food into little molecules that the body can use during chemical digestion.
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Which scientist was harshly criticized for his theories on "inheritance of acquired characteristics?"
- Jean Baptiste Lamarck
- Alfred Russel Wallace
- Georges Cuvier
- Charles Lyell
Research shows that habitat
fragmentation results in losing
which of these organisms FIRST?
A. amphibians
C. humans
B. the biggest species
D. insects
Answer:
A. Amphibians
spontaneous activity of the mitochondrial apoptosis pathway drives chromosomal defects, the appearance of micronuclei and cancer metastasis through the caspase-activated dnase
In cancer cells, there are smaller nuclei called micronuclei that store DNA. The immune sensor axis GAS/STING recognizes micronuclei, promoting the spread of cancer. By experimentally activating the mitochondrial apoptosis system to a non-apoptotic level, Caspase-activated DNA can cause the emergence of micronuclei (CAD). Micronuclei and chromosomal misalignments were decreased in tumor cell lines and intestine organoids by inhibiting mitochondrial apoptosis or CAD, respectively. Blocking mitochondrial apoptosis or removing CAD decreased. As a result, low-level mitochondrial apoptosis machinery activity affects cancer metastasis significantly through activating STING and CAD-dependent gene induction.
the same thing as mitochondria and mitochondrial?The circular chromosome known as mitochondrial DNA is discovered inside the cellular organelles known as mitochondria.
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1. An object that has an equal amount of protons and electrons would be
I
A. electrically charged
B. electric field
C. electric force
D. electrically neutral
Answer:
the answer is D
Explanation:
sorry if I'm worng....
Changes those occur during puberty in boys and girls(Secondary sexual characters)
a) Height
b) Body shape
c) Voice
d) Sweat glands and oil glands
e) development of sex organs
f) Psychological, mental, intellectual and emotional changes
In boys and girls, puberty is characterized by physical and hormonal changes during maturation .
What is Puberty?Puberty is the stage of adolescence when an individual becomes physically and sexually maturation .
Puberty is a process of maturation that typically begins around the ages of 10 or 11 and ends around the ages of 18 or 19.
During puberty, hormones released by the body cause physical changes such as growth of body hair, deepening of the voice, and the growth of breasts in females.
Puberty also brings about psychological changes such as increased and the ability self-awarenessto think more abstractly.
The process by which a child's body develops into an adult body capable of sexual reproduction is known as puberty.
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Why do you think that it is important for body functions to return normal after exercise?
Answer: Think about it when you exercise your heating up inside so you body is functioning every part inside your body but then after a while you start to calm down and your back to normal again. But then the next day your going to feel all sorts of your body parts feeling like its bruised up but that's just your body still functioning of all the exercise you did that day!
Explanation: Hope this helps?
2. Why do scientists use a specific method in completing their work?
Only number two
Answer:
So they do the experiments in the correct order.
Explanation:
If they don't do it in the correct order then, something major could go wrong. Also it should tell you the answer in the video link on your work sheet. :)
to pass from the blood into the capsular space in the renal corpuscle, which of the following must the substance pass through? the capillary endothelium. the capillary endothelium and the basement membrane. the capillary endothelium, the basement membrane, and the podocytes. the capillary endothelium, the basement membrane, and between the foot process of the t
To pass from the blood into the capsular space in the renal corpuscle, the substance must pass through the capillary endothelium, the basement membrane, and the podocytes.
To pass from the blood into the capsular space in the renal corpuscle, the substance must pass through the capillary endothelium, the basement membrane, and the podocytes.
The renal corpuscle is the initial part of the nephron in the kidney where blood filtration takes place. The glomerular capillaries in the renal corpuscle are surrounded by three layers: the capillary endothelium, the basement membrane, and the podocytes.
The capillary endothelium is the innermost layer of the glomerular capillaries and consists of a single layer of endothelial cells. The basement membrane is a thin layer of extracellular matrix that surrounds the capillary endothelium. The podocytes are specialized cells that have foot-like projections called foot processes that wrap around the capillaries and form filtration slits.
As blood flows through the glomerular capillaries, small molecules such as water, electrolytes, and waste products are able to pass through the capillary endothelium and basement membrane. However, larger molecules such as proteins and blood cells are generally too large to pass through these layers.
The podocytes further regulate the filtration process by controlling the size of the filtration slits between their foot processes. This helps to prevent larger molecules from passing through into the capsular space.
In summary, to pass from the blood into the capsular space in the renal corpuscle, the substance must pass through the capillary endothelium, the basement membrane, and the podocytes
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what is the correct order of protein production?
1) ribosome
2) endoplasmic reticulum
3) secretory vesicles
4) golgy apparatus
a) 1,2,3,4
b) 2,4,3,1
c) 1,2,4,3
d) 3,2,4,1
Answer:
The correct order of protein production is:
c) 1,2,4,3
Ribosome: Protein synthesis begins in the ribosomes, which are located either in the cytoplasm or attached to the endoplasmic reticulum.
Endoplasmic Reticulum: After the initial stages of protein synthesis in the ribosomes, the newly synthesized protein is transported into the endoplasmic reticulum (ER) for further processing and modification.
Golgi Apparatus: The proteins synthesized in the ER undergo further processing and modifications in the Golgi apparatus. This includes sorting, packaging, and modifying the proteins to their final functional forms.
Secretory Vesicles: Once the proteins are properly processed and modified in the Golgi apparatus, they are packaged into secretory vesicles. These vesicles transport the proteins to their destination, such as the plasma membrane for secretion outside the cell.
Therefore, the correct order is 1, 2, 4, 3.
Answer:
The correct order of protein production is ribosome, endoplasmic reticulum, Golgi apparatus, and secretory vesicles. So the correct answer would be c) 1,2,4,3.
Many proteins destined for the endoplasmic reticulum, the Golgi apparatus, lysosomes, the plasma membrane, and secretion from the cell are synthesized on ribosomes that are bound to the membrane of the endoplasmic reticulum. The Golgi apparatus then distributes these proteins and lipids that it receives from the ER.
What type of stress occurs when a rock mass is pushed in parallel and opposite directions? compression faulting shearing tension
Stress is the force that is applied to the rock. When the pressure is applied parallel but in opposite direction, is referred as shearing.
What is shear stress?The force that causes deformation of a material by slippage along planes that are parallel to the imposed stress.
The resultant shear is very important in nature as it relates the down-slope movement of Earth material and to earthquake.
Shear stress occurs when a rock mass is pushed in parallel but in opposite direction.
Thus, the correct option is C.
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Answer: C
Explanation:
this answer i need pls ill mark brainliest
All - growth, exchange of gases, excretion, reproduction, and death (option d).
All living organisms undergo various life processes to maintain their existence. Let's analyze each option to determine which life processes are carried out by an organism's cells:
A. Only growth and exchange of gases: While cells are involved in growth and exchange of gases, they also participate in other life processes. This option is incomplete.
B. Only growth, exchange of gases, and reproduction: Cells play a crucial role in reproduction as they are responsible for the production of gametes and the process of cell division. However, there are additional life processes that cells also undertake.
C. Only growth, exchange of gases, excretion, and reproduction: This option includes excretion in addition to growth, exchange of gases, and reproduction. Cells participate in excretion by eliminating waste materials. However, there is one more life process that cells experience.
D. All - growth, exchange of gases, excretion, reproduction, and death: This option encompasses all the mentioned life processes. Cells are involved in growth as they undergo cell division and increase in number. They exchange gases through processes like respiration. Cells excrete waste products. They participate in reproduction through the formation of gametes and cell division. Lastly, cells also experience death as they have a limited lifespan.
Therefore, the correct answer is D. All - growth, exchange of gases, excretion, reproduction, and death.
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All of the following are good indications of a pathogenicity island in a microbial chromosome EXCEPT a. GC/AT ratio higher or lower than the rest of the chromosome. b. presence of RNA nucleotides
c. presence of clusters of virulence genes d. residual phage genomes flank the island.
A pathogenicity island is a segment of a microbial chromosome that contains virulence genes. These genes enable the microbe to cause disease in a host organism. When analyzing a microbial genome, there are several indicators that can suggest the presence of a pathogenicity island. However, one of the options provided in the question is NOT a good indication of a pathogenicity island.
One indication of a pathogenicity island is a GC/AT ratio that is different from the rest of the chromosome. Pathogenicity islands often have a higher or lower GC/AT ratio than the surrounding genomic region. This is because pathogenicity islands often have a different evolutionary origin than the rest of the chromosome.
Another indication of a pathogenicity island is the presence of clusters of virulence genes. These genes may be unique to the pathogen or may be present in other related organisms that also cause disease.
In summary, a pathogenicity island can be identified by several indicators, including a different GC/AT ratio, the presence of clusters of virulence genes, and the flanking of residual phage genomes. However, the presence of RNA nucleotides alone is not a good indication of a pathogenicity island.
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explain why a plant that does not get enough nitrate has weak growth
Answer:
Nitrate deficiency
Explanation:
Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces. This reduces the plant's ability to photosynthesise and grow properly, which reduces the farmers' crop yield .
what is the role of messenger rna in protein synthesis
The role of messenger RNA (mRNA) in protein synthesis is to carry the genetic information from the DNA to the ribosomes, where it serves as a template for protein synthesis. mRNA is transcribed from the DNA in the nucleus during a process called transcription.
After transcription, the mRNA molecule carries the genetic code, which consists of a sequence of nucleotides (adenine, cytosine, guanine, and uracil), to the ribosomes in the cytoplasm. The sequence of nucleotides in the mRNA is a complementary copy of the DNA sequence, with uracil (U) replacing thymine (T).
At the ribosomes, mRNA acts as a messenger or intermediary between the DNA and the synthesis of proteins. The ribosomes read the sequence of nucleotides in the mRNA and use it as a blueprint to assemble amino acids in the correct order, forming a polypeptide chain. This process is called translation.
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Discuss how gaseous exchange occurs in a) Terrestrial Insects
Answer:
Explanation:
Insects have a unique respiratory system called the tracheal system which is used for gas exchange. The tracheal system is a network of tubes that carries air directly to the cells of the body. The finest branches of the tracheal system, called tracheoles, contact individual cells. Gaseous exchange occurs via this tracheal system.
What will happen to the rate of
photosynthesis if the amount of
atmospheric nitrogen available to
a plant increases?
A. It will increase.
B. It will decrease.
C. It will be unaffected.
Answer:
A, it will increase
Explanation:
nitrogen is essentially like food to plants. so the more they get the bigger they can grow.
System assembly and programming You are advised to spend no longer than 2.5 hours on this activity. Develop a user-friendly system that is well organised, structured and formatted, including: producing the software program and annotating the code the assembly of any hardware (if required) refining the system so that it operates as expected and can handle some unexpected events. Once completed, insert the annotated code into the Electronic Task Booklet. Design, assemble, program and test a safe prototype system to monitor and control the interior lighting and window blind in a room to improve the security of an unoccupied office. To monitor and control office security, One 90 Office Safe has requested a prototype system that will, as a minimum: monitor the daylight level outside of the office building turn the interior lighting on and off in response to changes in daylight levels turn the electric motor on and off to open and close the window blind in response to changes in daylight levels provide the option to deactivate/reactivate the system. The client has not specified all the prototype system's functions and constraints. These other functions and constraints are for you, as the developer, to determine and justify. For example, the client has not stated: a specific daylight level to operate the system that the electric motor needs to change direction to open or close the window blind, as this could be achieved in other ways. You must follow an appropriate development process and use a microcontroller. In developing the prototype system you should consider enhanced user experiences and how it would deal with any unexpected events that may occur. One 90 Office Safe needs a new system that will automatically operate the interior lighting and window blind in a room to improve the security of an unoccupied office. The steps in the automated monitoring and control system are: 1. A light sensor monitors the daylight level outside the office building. 2. When the amount of daylight falls below a certain level: • the interior lighting in the room will switch on • an electric motor will close the window blind automatically, which takes 10 seconds. 3. When the amount of daylight rises above a certain level: • the electric motor will open the window blind automatically, which takes 10 seconds • the interior lighting in the room will switch off. The client has not stated that the electric motor needs to change direction to open or close the window blind, as this could be achieved in other ways. To monitor and control office security, the client has requested a prototype system that will, as a minimum: monitor the daylight level outside of the office building turn the interior lighting on and off in response to changes in daylight levels turn the electric motor on and off to open and close the window blind in response to changes in daylight levels provide the option to deactivate/reactivate the system. In developing the prototype system, you should consider enhanced user experiences and how it would deal with any unexpected events that may occur.
Answer:
Explanation:
Developing a user-friendly system to monitor and control the interior lighting and window blind in an unoccupied office for improved security can be achieved by following these steps:
Hardware Assembly:
1. Gather the required hardware components, including a microcontroller, light sensor, electric motor, interior lighting system, window blind mechanism, and any necessary wiring.
2. Assemble the hardware components, ensuring proper connections between the microcontroller, light sensor, electric motor, and the lighting and blind systems.
3. Test the hardware connections to ensure they are functioning correctly.
Software Programming:
1. Write the software program to control the system's operations based on the inputs from the light sensor and user commands.
2. Start by initializing the microcontroller and necessary variables.
3. Implement code to continuously monitor the daylight level using the light sensor input.
4. Set a threshold value for the daylight level to determine when to switch the interior lighting and open/close the window blind.
5. If the daylight level falls below the threshold, turn on the interior lighting and activate the electric motor to close the blind. Allow a 10-second delay for the blind to close.
6. If the daylight level rises above the threshold, turn off the interior lighting and activate the electric motor to open the blind. Allow a 10-second delay for the blind to open.
7. Provide an option in the code to deactivate/reactivate the system based on user input.
8. Implement error handling and exception management to handle unexpected events or system failures.
System Refinement and Testing:
1. Run test scenarios to ensure the system operates as expected under different lighting conditions and user commands.
2. Check for any bugs or errors in the code and make necessary adjustments for improved functionality.
3. Consider user experience and ensure the system is intuitive and easy to operate.
4. Test the system's response to unexpected events, such as sudden changes in daylight levels or sensor malfunctions.
5. Refine the system based on test results and user feedback to enhance its performance and usability.
By following this development process and using a microcontroller, you can create a prototype system that effectively monitors and controls the interior lighting and window blind in an unoccupied office, enhancing security and providing user-friendly functionality.
How would you expect the number of births to compare to the number of deaths in a population that was stable?
Answer:
in a stable population,the birth and death rates depend directly on the variance of age at death
tructures used in recombinant DNA technology to carry the DNA from the cells of one species to the cells of another species are Multiple Choice donor DNA. sticky ends. cloning vectors. restriction enzymes.
The process of fusing two or more DNA molecules to produce a hybrid is known as recombinant DNA. Restrictions endonucleases and ligases are two classes of enzymes that enable the technique.
When a restriction endonuclease detects a particular DNA sequence, it makes cuts inside or near that sequence. The recognition sequence of a restriction enzyme will haphazardly appear on every (1–4)n bases along a random DNA chain. The equation states how many fragments ends (measured in moles) are produced when a restriction enzyme cuts DNA.
Moles of DNA ends =2x(grams of DNA)/(number of bp)(660 g/mol / bp).
The equation describes how many ends are produced when circular DNA is digested by a restriction enzyme.
Mole ends=2x(moles DNA)x number of restriction sites.
The following equation can be used to determine how many ends are produced during the digestion of a linear molecule by a restriction endonuclease.
Mole ends=2x(molesDNA)number of restriction sites +[2x(moles of DNA)].
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Describe the effects drugs can have on the human brain. paragraph
Answer:
Drugs interfere with the way neurons send, receive, and process signals via neurotransmitters. Some drugs, such as marijuana and heroin, can activate neurons because their chemical structure mimics that of a natural neurotransmitter in the body. This allows the drugs to attach onto and activate the neurons.
Explanation:
The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea planthat has green pods. Green pods are the dominant trait. The flowchart is missing the labels that describe the traits.In which squares should the phrase "Green pods" appear?O A and D onlyOB and E onlyO A, C, and D onlyO A, B, C, D, and E
Since green pods are dominant we can conclude that the overall genotype for that trait is (G_) being the yellow pods the recessive genotype (gg). Knowing that the squares that should have the phrase "Green pods" are the anes that represent heterozygous (Gg) and homozygous dominant organisms (GG), being the A, C, and D only.
the steps of the action potential when potassium channels open and potassium rushes out of the cell, is called: g
When potassium channels open and potassium rushes out of the cell, it triggers a hyperpolarization phase in the action potential.
When potassium channels open and potassium rushes out of the cell, it triggers a hyperpolarization phase in the action potential. This occurs after the depolarization phase, where sodium channels open and sodium rushes into the cell. During the hyperpolarization phase, the membrane potential becomes more negative than the resting potential, making it less likely for the neuron to fire again. This is due to the high concentration of potassium ions outside the cell and the low concentration inside, creating an electrochemical gradient that drives potassium out of the cell. The steps of this process involve the opening of potassium channels, the movement of potassium ions down their concentration gradient, and the restoration of the resting membrane potential.
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a. drag the correct nucleotide to the bottom of the left strand, where the dna polymerase is located. what happens?
Thus, the daughter strand is generated in a 5'-3' direction while DNA polymerase travels along the template strand in a 3'-5' direction.
Since the 3' end of the previous nucleotide chain must be extended in order for DNA polymerase to begin synthesis, it can only synthesize in one direction. The mitochondrial polymerase is in charge of replicating the mitochondrial DNA.
The remaining four enzymes are also found in the nucleus, making them potential participants in nuclear DNA replication. It proofreads each newly inserted base, editing the DNA as it goes. Polymerization proceeds once incorrect bases are swapped out for the right ones.
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how many people live in world
Answer:
7,794,798,739
Explanation:
nitrifiers are bacteriaquestion 68 options:a) that generate nitrites or nitrates.b) that convert n2 to nh3.c) capable of oxidizing nh3 using no.d) capable of using nh3 as an electron donor.e) capable of living in symbiosis in the roots of some plants.
Nitrifiers are bacteria that generate nitrites or nitrates. The correct option is (a)
Nitrifiers are a group of bacteria that play an important role in the nitrogen cycle by converting ammonia (NH₃) into nitrites (NO₂⁻) and nitrates (NO₃⁻) through a process called nitrification.
This process is important for the cycling of nitrogen in ecosystems, as it converts ammonia, which is toxic to most plants, into forms that can be readily taken up and used by plants.
Nitrification is a two-step process, with ammonia being first oxidized to nitrite by bacteria such as Nitrosomonas and Nitrosococcus, and then further oxidized to nitrate by bacteria such as Nitrobacter and Nitrospira. Without nitrifying bacteria, the nitrogen cycle would be incomplete, and the availability of nitrogen for plant growth would be severely limited.
Hence, (a) is the correct option.
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what happens during meiosis I and meiosis II?
Answer: In meiosis I, homologous chromosomes partitioned, whereas in meiosis II, sister chromatids isolated. Meiosis II produces 4 haploid girl cells, though Meiosis I produces 2 diploid girl cells. Hereditary recombination (crossing over) as it were happens in meiosis I.
Explanation:
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In temperate regions, a lot of animals are active in daylight and inactive at night. This is_[blank 1]_ because daytime temperatures are warm, and animals can rely on their_[blank 2]_ to find food.
blank 1: a survival disadvantage
blank 2: sight
blank 1: a survival advantage
blank 2: sight
blank 1: a survival advantage
blank 2: hearing
blank 1: a survival disadvantage
blank 2: hearing
Answer:
Explanation:
blank 1: a survival advantage
blank 2: sight
In temperate regions, a lot of animals are active in daylight and inactive at night because daytime temperatures are warm, and animals can rely on their sight to find food. This is a survival advantage because being active during the day allows animals to take advantage of the warm temperatures and find food more easily.
Select all the types of transport that DO NOT require energy *
Active Transport
Passive Transport
Diffusion
Endocytosis
Exocytosis
Osmosis
Facilitated Diffusion
Answer:
Passive Transport , Diffusion, Osmosis
Explanation:
Active Transport requires energy. Endocytosis, exocytosis and facilitated diffusion are types of Active Transport.
Passive Transport does not require energy. Diffusion and osmosis are types of Passive Transport.
Answer:
Passive TransportDiffusionOsmosisExplanation:
These types of transport that do not require energy.