a fruit fly (drosophila) has n=4 chromosomes. how many chromosomes should be in a sperm cell from a male fruit fly?
Answers
Related Questions
why is net energy important
Answers
Because without Net energy half of the high quality items we create will be using sources that cause us to use way more energy then needed just to get what is provided from this item.
Which of the following reactions will have a net negative delta E value?
TCA Cycle
Glycolysis
Fermentation
Pentose Phosphate Pathway
Photosynthesis
Answers
A reaction with a net negative delta E value means that the reaction is spontaneous. Spontaneous reactions are the ones that release energy and move toward equilibrium without any external input. When a reaction has a net negative delta E value, it means that the products are more stable than the reactants.
The reactants will, therefore, spontaneously convert into products. This means that the reaction is exothermic as heat is given off.
The TCA Cycle is the only one of the options given that will have a net negative delta E value. The TCA Cycle (also known as the Krebs Cycle) is a series of reactions that occur in the mitochondrial matrix of eukaryotic cells. The TCA Cycle is responsible for the oxidation of acetyl-CoA and the generation of NADH and FADH2, which will be used later in the electron transport chain to produce ATP.
During the TCA Cycle, the oxidation of acetyl-CoA to CO2 releases energy. This energy is used to generate ATP, NADH, and FADH2. Since energy is released, the reaction is exothermic, and delta E is negative. This means that the TCA Cycle will have a net negative delta E value.
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Cells can have two kinds of endoplasmic reticulum (ER): smooth ER, which has no ribosomes, and rough ER, which has ribosomes embedded in it’s membrane.what would happen if the rough endoplasmic reticulum in the cell of an organism lost all of it’s ribosomes?
Answers
Answer: If the rough ER lost all of its ribosomes, the cells wouldn't be able to produce any protein.
Explanation:
A single cell can contain around 10 million ribosomes. Without these ribosomes, cells would not be able to produce protein and would not be able to function properly. The cell would no longer be able to send proteins to the Golgi.
Severe flooding in an area caused a population of minnows to become split into two separate ponds. Prior to the separation, the
male minnows all had a moderate number of spots
Following the separation, the first pond was filled with larger fish that fed on minnows, so male minnows with fewer spots were
better able to avoid detection by predators. The minnows in the second pond, however, had very few predators, and female
minnows in this pond preferred to mate with males that had the most spots,
After many generations, the two minnow populations evolved into different species and could no longer interbreed.
Fish Species Average # of Spots
Original Species four to six
New Species 1 zero to two
New Species 2 eight to ten
Which of the following best describes why the two minnow populations evolved into separate species?
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Answer:
Different selective pressures were acting upon the two populations, leading to an increase in genetic variation and the formation of two new species.
What do sediments increase pollution in an aquifer?
Answers
Answer:
Explanation:
Contamination also can occur from naturally occurring mineral and metallic deposits in rock and soil. For many years, people believed that the soil and sediment layers deposited above an aquifer acted as a natural filter that kept many unnatural pollutants from the surface from infiltrating down to groundwater.
explain how the adaptation to reproduce quickly is beneficial in bacteria's ability to
develop resistance to antibiotics
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Answer:
Antibiotics save lives but any time antibiotics are used, they can cause side effects and lead to antibiotic resistance.
Since the 1940s, antibiotics have greatly reduced illness and death from infectious diseases. However, as we use the drugs, germs develop defense strategies against them. This makes the drugs less effective.
The colloid osmotic pressure in the capillary is caused by __________.a) proteins in the bloodb) blood pressure
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The colloid osmotic pressure in the capillary is caused by proteins in the blood.
The correct option is option a.
Colloid osmotic pressure, or the COP, is basically defined as the osmotic pressure which is exerted by the large molecules and basically serves to hold the water within the vascular space. This pressure is primarily created by the plasma proteins, namely the protein albumin, which is not able to diffuse very readily across the capillary membrane.
Inadequate amount of colloid osmotic pressure can end up contributing to the vascular volume loss as well as peripheral edema. Normal colloid osmotic pressure is approximately 20 mmHg. Patients who have the colloid osmotic pressure values less than 15 mmHg are at a possible risk for peripheral edema. COP is measured directly with the help of a colloid osmometer.
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Which of the following statements is true?
O Cellular respiration is the same as photsynthesis
Cellular respiration is the opposite of photosynthesis
o Cellular respiration has the same products but different reactants than photosynthesis
O Cellular respiration has the same reactants but different products than photosynthesis
Answers
Answer:
b. Cellular respiration is the opposite of Photosynthesis
Explanation:
i jus took the test and it was right
During the process of transpiration, water is pulled up from the roots and into the leaves of the
plant for use during photosynthesis. If the plant has excess water in the leaves, transpiration
releases that water into the air.
Based on the description of transpiration, what internal and external conditions would most
likely cause this process to occur?
A. There is a lack of water in the plant, and it’s daytime
B. There is a lack of water in the plant, and it is nighttime
C. There is plenty of water in the plant, and it is daytime
D. There is plenty of water in the plant, and it is nighttime
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Answer:
Your answer is C). If the plant is releasing water into the air, that must mean that there is an excess of water in the plant, and photosynthesis can only occur when sunlight is present.
how many net atp would be produced by glycolysis per glucose molecule in the absence of enolase?
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Glycolysis is the metabolic pathway that breaks down glucose into two molecules of pyruvate, producing ATP and NADH in the process. During glycolysis, a total of two ATP molecules are produced through substrate-level phosphorylation.
However, the net ATP production is different from the total ATP production as two ATP molecules are consumed during the early stages of glycolysis. Therefore, the net ATP production during glycolysis is two ATP molecules.Enolase is an enzyme that catalyzes the ninth step in glycolysis, which is the conversion of 2-phosphoglycerate to phosphoenolpyruvate. This step generates one molecule of ATP through substrate-level phosphorylation. Therefore, in the absence of enolase, one ATP molecule would not be produced during glycolysis. As a result, the net ATP production during glycolysis would be reduced to one ATP molecule per glucose molecule.Overall, glycolysis is an important metabolic pathway that produces ATP and NADH for cellular energy. The net ATP production during glycolysis is dependent on the presence of all the enzymes in the pathway, including enolase. Without enolase, the net ATP production would be reduced, leading to a decrease in energy production.For more such question on Glycolysis
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What is a food web? im on 7th grade btw
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Answer: A web of animals and plants that show a predator-prey relationship.
which protein(s) aggregate in complexes called purple patches? choose one or more: a. sensory rhodopsin ii b. sensory rhodopsin i c. bacteriorhodopsin d. phosphate permease e. halorhodopsin
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Bacteriorhodopsin aggregate in complexes called purple patches. The correct option is C.
Bacteriorhodopsin is a membrane protein that is synthesized by Halobacterium halobium .
Patches of a distinctly different structure from the rest of the cell membrane occur in Halobacterium halobium. The isolated patches are called the purple patches. These patches derive their color from bacteriorhodopsin, a retinal-protein complex. Bacteriorhodopsin is the only protein species in this membrane serving a phototransducing function. It captures light energy and uses it to move protons across the membrane out of the cell. The resulting proton gradient is subsequently converted into chemical energy.
Therefore, option C bacteriorhodopsin is the correct answer.
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in some populations, 1 in 500 people have sickle cell disease. what reason does the film give for why a potentially deadly, inherited disease is found at such high frequencies?
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The film suggests sickle cell trait provides resistance to malaria, which confers a selective advantage, leading to high frequency.
The film proposes that the high recurrence of sickle cell illness in certain populaces can be made sense of by the particular benefit gave via conveying just a single duplicate of the sickle cell quality, a condition known as sickle cell characteristic. People with sickle cell quality are impervious to jungle fever, an illness brought about by a parasite that is communicated by mosquitoes.
Jungle fever is endemic in many pieces of Africa, where sickle cell illness is generally normal. Subsequently, people who convey one duplicate of the sickle cell quality have an endurance advantage over the individuals who don't, as they are less inclined to contract jungle fever. This endurance advantage has prompted the perseverance of the sickle cell quality in these populaces over the long run.
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Which statement is the best description of an ecosystem?
Answers
Answer:
biological community of interacting organisms and their physical environment
During which phase of the bacterial growth curve are there both live and dead cells? (Select all that apply) Select one or more: ✓ a. Stationary b. Log (exponential) c. Death d. Lag
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The phase during which there are both live and dead cells of the bacterial growth curve is Stationary phase and Death phase.
What is a bacterial growth curve?A bacterial growth curve is a graph that represents the growth of bacterial cells over time. The bacterial growth curve can be divided into four distinct stages, each of which corresponds to a different phase of the bacterial growth cycle.
These four stages are as follows:
Lag Phase
Log Phase (exponential growth)
Stationary Phase
Death Phase
During which phase of the bacterial growth curve are there both live and dead cells?Both live and dead cells are present during the Stationary and Death phases of the bacterial growth curve.
Explanation:
The Stationary phase : The Stationary phase is a phase in which bacterial growth rate slows down or stops as the bacteria exhaust their food supply, nutrients and accumulate toxic waste products. Stationary phase is the second stage of the bacterial growth cycle, occurring after the lag phase.
The Death phase : The Death phase is the last phase of the bacterial growth cycle, in which the population of bacterial cells declines as they die off. When bacteria consume all of the nutrients, and toxic waste products accumulate, the death phase is initiated.In the Death phase, the bacteria die-off more rapidly than they can be replaced, resulting in a decrease in the total number of bacterial cells in the population. This phase continues until the bacteria are completely depleted of nutrients and die.
Hence, bacterial growth curve contain both live and dead cells in Stationary phase and Death phase.
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How does molecular biology give evidence for evolution?
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Answer:
sorry di ko alam
Explanation:
‼️BRAINLIEST‼️ what is the difference between mitosis and meiosis?
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Answer: Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
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Enamel is the hardest substance in the human body. Justify your answer.
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Enamel is indeed the hardest substance in the human body. It is present in teeth of humans. It covers every tooth and provides the hard layer.
Tooth Enamel is hard glossy substance that is comprised of calcium and phosphate mineral crystals which in return makes our teeth more stronger. Teeth enamel care is extremely important to maintain the oral health of teeth.
Tooth Enamel is one of the major tissue that make up tooth in humans. It covers the top layer of the teeth known as Crown. Calcium hardens the tooth enamel. Enamel contains 96% of the minerals. The color of Enamel varies from light yellow to white.
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Fill in the blanks with the correct word or phrase.
The process of change in a population over time is called
.
The process by which organisms that are better adapted to the environment survive and reproduce is called
.
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Answer:
evolution
Natural selection
Explanation:
Answer:
The first blank is evolution and the second black is natural selection.
Explanation:
Eukaryotic cell division requires?
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Answer:
Division of NucleusDivision of CytoplasmI hope this helps!
Answer:
Eukaryotic cell division requires?, : first they have too divide their nucleus, followed by dividing their cytoplasm, to complete the division of cells.
- hope this helps
by chance may I get brainliest
:)
Which of the following is NOT a characteristic of white blood cells? Have nuclel and mitochondria Have amoeboid movement Can leave blood vessels Make up the major formed element
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The characteristic of white blood cells (leukocytes) that is NOT accurate among the given options is "Make up the major formed element."
White blood cells do not make up the major formed element in the blood. The major formed elements in the blood are red blood cells (erythrocytes), which are responsible for carrying oxygen. White blood cells, on the other hand, are a smaller component of the blood and play a crucial role in the immune response, defending the body against infections and foreign substances.
The accurate characteristics of white blood cells are as follows:
- They have a nucleus and mitochondria.
- They exhibit amoeboid movement, which allows them to migrate and move through tissues.
- They have the ability to leave blood vessels through a process called diapedesis in response to infection or inflammation.
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Making up the major formed element is NOT a characteristic of white blood cells.
White blood cells, also known as leukocytes, play a crucial role in the immune system. They have nuclei and mitochondria, allowing them to function and produce energy.
Amoeboid movement is another characteristic, enabling them to move towards and attack pathogens.
Additionally, they can leave blood vessels through a process called diapedesis to reach infection sites. However, they do not make up the major formed element in blood;
that would be red blood cells (erythrocytes), which are significantly more abundant than white blood cells and primarily transport oxygen and carbon dioxide.
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A particular antigen is known to have 6 different antigenic determination sites (epitopes).Theoretically, this antigen can stimulate the production ofdifferent types of antibodies:A) 1B) 6C) 100D) Many, many different types
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can someone summarize this for me
“summarize the information to demonstrate that you understand the concept of negative feedback “
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Answer:
Short paragraph:
Homeostatis is the process by which the body maintains a stable internal environment. The hypothalamus is a part of the brain that regulates many key body processes. It works to restore the system to its normal state when an internal change in one of these systems occurs.
Long paragraph:
The hypothalamus is a part of the brain that regulates many key body processes including internal body temperature, hunger, thirst, blood pressure, and daily (circadian) rhythms. When the brain receives signals from the body about an internal change in one of its systems, it works to restore the system to its normal state. For example, the normal internal temperature for the human body is approximately 98.6 degrees Fahrenheit. If the body temperature rises because of exercise, the body will try and cool itself off. This happens through coordination between the hypothalamus and the various body systems that are affected.
HELP PLS: NEED ANSWER ASAPPPPPPPPPPPP <3
1. Explain acid deposition. Your explanation should include the following:
• The sources of acid deposition
• The chemical equations involved in acid deposition formation
• An explanation of the types of acid deposition
• A discussion of the effects of acid deposition
• A drawing that shows the sources, formation, and precipitation of acid deposition
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Acid deposition is the deposition of acidic compounds from the atmosphere to the Earth's surface. It is caused by natural sources like volcanoes and human activities such as burning fossil fuels. Chemical equations include \(SO_2\) + \(O_2\) + \(H_2O\) → \(H_2SO_4\) and NOx + \(O_2\) + \(H_2O\) → \(HNO_3\). Acid deposition can be wet or dry, harming ecosystems and causing damage to structures. The effects of acid deposition are far-reaching. It can lead to the acidification of lakes, rivers, and soils, which can harm aquatic ecosystems and affect the growth and survival of plants and animals. Acid deposition can also damage buildings, statues, and monuments made of limestone or marble, as these materials are particularly susceptible to erosion by acids.
Acid deposition refers to the deposition of acidic compounds from the atmosphere onto the Earth's surface.
Sources of acid deposition include natural sources like volcanic emissions and the oxidation of sulfur and nitrogen compounds, as well as human activities like burning fossil fuels.
The chemical equations involved in acid deposition formation are:
a. Formation of sulfuric acid: \(SO_2\) + \(O_2\) + \(H_2O\) → \(H_2SO_4\)
b. Formation of nitric acid: NOx + \(O_2\) + \(H_2O\) → \(HNO_3\)
Acid deposition can be classified into two types: wet deposition and dry deposition.
a. Wet deposition occurs when acidic pollutants dissolve in precipitation and are deposited onto the Earth's surface.
b. Dry deposition happens when acidic particles and gases settle directly onto the ground or other surfaces without being dissolved in precipitation.
The effects of acid deposition include the acidification of lakes, rivers, and soils, which can harm aquatic ecosystems and affect plant and animal life. It can also cause damage to buildings, statues, and monuments made of limestone or marble.
A visual representation of the sources, formation, and precipitation of acid deposition can be illustrated through a diagram or drawing. This can show the emission sources, chemical reactions, and the deposition of acidic compounds onto the Earth's surface.
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What is the atomic number for an element that has 3 more protons than calcium?
A 43
B 23
C 17
Answers
Answer: 23
Explanation: Calcium has an atomic number of 20, as a balanced element the number of protons and electrons are equal so if the element has 3 more protons it also has 3 more electrons. Atomic number will be 23 Vanadium
How did ancient organisms change the Earth’s atmosphere?
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Answer:
I will change everything on this earth and make it cool
Is the circled karyotype a male or female?
female
male
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Answer: A normal female karyotype is written 46, XX, and a normal male karyotype is written 46, XY.
Explanation:
Explanation:
In an individual of genotype aa, where are the a and a alleles physically located?.
Answers
The organisms with AA genotype are pure breeds. The alleles of these genotypes are present at each genetic locus, in which one is inherited from the mother and another is from the father.
What is genetic locus?Genetic locus is the a specific and fixed position on a chromosome where a gene or genetic marker is present.
A variant form of gene is allele, humans have two alleles at each genetic locus which make humans diploid organism.
Thus, it can be concluded that in genotype aa, the a and a alleles are physically located each genetic locus.
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Genotypes are the genetic composition of the organism. The alleles for the genotype are located at the genetic loci of the chromosome inherited from each parent.
What are alleles and genetic loci?The alternate version of the genes that code for the hereditary trait and characteristic of the organism giving them the genotype and the phenotype is the alleles.
Genetic loci is the designated position found on the chromosome of the organism possessing the alleles coding for the genotype that can be purebred dominant and recessive, and heterozygous.
Therefore, alleles are physically present on the loci.
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how effective are vaccines
Answers
Answer:pretty effective helps your body get preapeared when you get attacked by the real thing
Explanation:
Intrusive igneous rock has a well
developed, course-grained texture.
Which of the following is accurate about
this type of igneous rock?
A. It is made from sediments.
B. It is made from lava that cools quickly.
C. It is made from magma that cools slowly.
hip.
D. It never solidifies.
Answers
The accurate statement about intrusive igneous rocks is: (C) It is made from magma that cools slowly.
Igneous rocks are also called the magnetic rocks. They are formed by the cooling down and crystallization of the magma. These are further of two types: intrusive and extrusive. Polished granite is made from igneous rocks that is very commonly used to make the kitchen counter-top.
Magma is the extremely hot molten lava present in the mantle layer of the Earth. This magma when goes deep inside the Earth's crust layer, it causes volcanic eruptions. The magma is formed due to the meting of rocks.
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