during which phase of the cell cycle is dna copied?
Answers
Answer:
S phase
Explanation:
Related Questions
What is the main observation scientists made prior to their experiment with turbinmicin
Answers
The main observation made by the scientists before their experiment with turbinomycin was the presence of a specific microorganism or biological particle and its activities.
What type of microorganism was observed?Fungi.Bacteria.Cancer cells.Healthy cells.Turbinmicin is a molecule that has antifouling activities and for this reason, it stimulated the curiosity of scientists who wanted to know more about this molecule and its performance in living organisms in the fight against diseases and other ailments.
However, before promoting studies on turbinmicin, it was necessary to carry out preliminary studies on microbiology, molecular biology, toxicity, among others.
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Where does the mutation that causes this disorder occur?
A
The mutation occurs on the DNA.
B
The mutation occurs on the RNA.
С
The mutation occurs on the ribosomes.
D
The mutation occurs on the amino acid.
Answers
Answer:
I believe its A
Explanation:
Which represents the size of a population?
Answers
D. Number of individuals in a specie
Step By Step Explanation:
Answer:
the answer is A
Explanation:
Some students used information they gathered from lab investigations to prepare a table. They entered the table in their lab notebooks. Which of these correctly identifies the two cells described in the table? Your answer: Cell 1 is eukaryotic, and Cell 2 is prokaryotic. Both Cell 1 and Cell 2 are prokaryotic. Cell 1 is prokaryotic, and Cell 2 is eukaryotic.
Answers
Answer:
A
Explanation:
7. Explain why cloned organisms such
as Dolly provide evidence for epigenetic mechanisms.
Answers
Dolly the sheep is a well-known clone that was created in 1996 and her creation has provided important evidence for epigenetic mechanisms. Epigenetic mechanisms can be explained as the physical and chemical modifications that are made to DNA and its associated proteins without altering the underlying genetic code.
The epigenetic mechanisms that take place within a cloned organism can cause problems for the clone. These modifications can change gene expression and lead to developmental abnormalities. For instance, Dolly had prematurely aged, large offspring syndrome, and other physical abnormalities, which is believed to be the result of epigenetic changes in her DNA. Dolly's creation and subsequent health problems provide evidence of the importance of epigenetic mechanisms. Furthermore, the study of clones has provided valuable insight into the importance of epigenetic mechanisms in development and gene expression.
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different between annual plant and Biennial plants
Answers
Answer:
Annual plants germinate, bloom, set seed and die all in one year. Biennial plants have a life cycle of two years so they germinate and grow one year, bloom and die the following. Everything which lasts longer than two years is Perennial, which in practical terms usually means it grows and flowers for many years.Explanation:
Hopes this helps. Mark as brainlest plz!Indicate whether the glven act would create water retention or water loss In the body.
Dry mouth ~ Increased osmolarity of blood aldostorenone hyposecretion ~ Decreased renal tubular reabsorption of water Renin release ~ Hyponatremia
Increased blood pressure ~ Ingestion of water
ADH hypersecretion ~ Hyperkalemia
Increased water permeability of the DCT and collecting ducts of the kidneys ~ Hemorrhage
Exercise in a warm climate
Answers
ADH and testosterone increase the risk of heart and volume as the water is absorbed into the bloodstream into to the capillaries, bringing the blood salt concentration back to normal.
What does the renin enzyme do in response to a lower ph quilt in the kidney?An enzyme known as renin is released by kidney cells in response to low blood pressure. The kidneys reabsorb salt due to renin. Water retention is a constant side effect of sodium reabsorption. Blood pressure and volume are restored as a result.
Which hormone promotes water retention while guarding against dehydration?A deficiency of renin - angiotensin system (ADH), also known as prolactin, usually prevents hydration, or the kidneys and liver inability to react to ADH, are the two main causes of diabetes insipidus. The kidneys may hold onto the body's fluids thanks to ADH. The steroid.
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Chromosomes are made of tightly packed molecules
Answers
Answer:
true
Explanation:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
inherited traits are governed controlled by
Answers
Inherited traits are controlled by genes. In this case, genetic material.
Genetic material.
how many spinal nerves are in each region of the spinal cord in order from superior to inferior?
Answers
There are 31 pairs of spinal nerves in the human body, which are named based on the region of the spinal cord from which they arise. The spinal cord is divided into four regions: cervical (C1-C8), thoracic (T1-T12), lumbar (L1-L5), and sacral (S1-S5).
Starting from the superior region of the spinal cord, there are 8 pairs of cervical nerves, 12 pairs of thoracic nerves, 5 pairs of lumbar nerves, 5 pairs of sacral nerves, and 1 pair of coccygeal nerves. Each spinal nerve is composed of motor and sensory neurons that transmit information between the body and the spinal cord.
The spinal nerves exit the spinal cord through the intervertebral foramen and then divide into smaller branches, which supply motor and sensory innervation to specific regions of the body. Understanding the distribution of spinal nerves in each region is important for clinicians in diagnosing and treating various neurological disorders.
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What are pulmonary semilunar valves?
Answers
Pulmonary semilunar valves are one of the four valves found in the human heart. They are located between the right ventricle, which pumps blood to the lungs, and the pulmonary artery, which carries that blood to the lungs. These valves play a crucial role in the process of blood flow through the heart and lungs, ensuring that blood flows in the correct direction and preventing it from flowing back into the heart.
The Pulmonary semilunar valves are called "Pulmonary semilunar valves" because they are shaped like half-moons, with three cusps or flaps. These flaps open and close to allow blood to flow through the pulmonary artery and into the lungs, where it is oxygenated. When the right ventricle contracts, it pushes blood into the pulmonary artery, and this pressure forces the valve flaps to open, allowing the blood to flow through.
When the right ventricle relaxes, the pressure in the pulmonary artery drops and the valve flaps close, preventing blood from flowing back into the right ventricle.
The pulmonary semilunar valves are unique in that they are the only valves in the heart that do not have any nerves or muscles to control their opening and closing. Instead, they rely on the pressure difference between the right ventricle and the pulmonary artery to open and close. This ensures that the valves open and close in perfect synchrony with the contraction and relaxation of the right ventricle, ensuring that the blood flow is smooth and efficient.
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Match each characteristic to bacterial protein synthesis or eukaryotic protein synthesis.
Answer Bank:
First AUG initiates translation.
Shine-Dalgarno sequence
80S ribosome.
70S ribosome.
simultaneous transcription
and translation possible
spatial separation of
transcription and translation
polycistronic mRNA
Answers
Polycistronic mRNA - Bacterial mRNA can contain multiple coding regions (cistrons), allowing for the synthesis of several proteins from a single mRNA molecule.
Bacterial Protein Synthesis:
1. Shine-Dalgarno sequence - This sequence is found in bacterial mRNA and helps with the binding of the ribosome to the mRNA.
2. 70S ribosome - Bacterial ribosomes are smaller, with a total size of 70S.
3. Simultaneous transcription and translation possible - In bacteria, transcription and translation can occur simultaneously in the cytoplasm.
4. Polycistronic mRNA - Bacterial mRNA can contain multiple coding regions (cistrons), allowing for the synthesis of several proteins from a single mRNA molecule.
Eukaryotic Protein Synthesis:
1. First AUG initiates translation - In eukaryotes, the first AUG codon signals the start of translation.
2. 80S ribosome - Eukaryotic ribosomes are larger, with a total size of 80S.
3. Spatial separation of transcription and translation - In eukaryotes, transcription occurs in the nucleus, while translation occurs in the cytoplasm, creating a spatial separation.
4. Monocistronic mRNA - Eukaryotic mRNA typically contains a single coding region, allowing for the synthesis of only one protein per mRNA molecule.
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which factor contributes to the phenomenon of natural selection? question 12 options: lack of competition in mating genetic homogeneity in a population competition for survival underpopulation
Answers
The factor that contributes to the phenomenon of natural selection is : competition for survival.
What do you understand by the phenomenon of natural selection?Natural selection can be defined as the the process by which populations of living organisms adapt and change. Individuals in the population are naturally variable. This variation clearly means that some individuals might have traits better suited to the environment than others
Darwin's process of natural selection has following four components:
Variation that means organisms exhibit individual variation in appearance and behavior.Inheritance that implies that some traits are consistently passed on from parent to offspring. High population growth rate.Reproduction and differential survival.To know more about natural selection, refer
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Which of the following was observed in studies measuring the efflux of radioactive sodium from the squid giant axon?
a. Dramatic increase of efflux during a brief train of action potentials
b. Sharp drop in efflux when intracellular potassium was removed
c. Dependence of efflux upon the presence of ATP
d. Decrease of efflux when ATP synthesis was increased
e. No recovery when potassium or ATP was restored.
Answers
Dependence of efflux upon the presence of ATP was observed in studies measuring the efflux of radioactive sodium from the squid giant axon.
So, the correct option is C.
The squid giant axon is a highly specialized biological device whose primary function is to consistently and quickly activate the squid's mantle muscles to produce its jet propulsion mechanism. In order to circumvent this issue, Hodgkin and Huxley looked at the action potentials in the squid's comparatively massive axons, which may reach 1 mm in diameter. When an action potential occurred, they were able to quantify electrical alterations in the squid giant axon by inserting a tiny capillary electrode into the axon measured efflux of radioactive sodium.
One of the most significant discoveries regarding the brain came from research on squid axons: the process underlying the "action potential," the electrical language used by brain cells to communicate.
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Given what you know about Cell Division, what would be your reasoning for why the cell spends the most amount of time in _____________phase? (you may make your most educated guess using your notes)
Answers
Answer:
Interphase is the longest phase in the cell cycle.
Explanation:
When the courts or legislators make law, they are guided by certain habits of mind and specific beliefs about human nature. the results are schools of?
Answers
When the courts or legislators make law, they are guided by certain habits of mind and specific beliefs about human nature which is known as jurisprudence.
Jurisprudence refers to the philosophy or theory of law, encompassing the principles and beliefs that guide courts and legislators in making laws. It involves the study and interpretation of legal principles, concepts, and theories. Different schools of jurisprudence arise from varying habits of mind and beliefs about human nature, influencing the development and application of laws.
When courts or legislators make laws, their decisions and actions are influenced by certain habits of mind and specific beliefs about human nature. These factors shape their approach to interpreting laws, resolving legal disputes, and creating new legislation. The collective body of these guiding principles and beliefs is referred to as jurisprudence.
Jurisprudence encompasses a wide range of philosophical and theoretical perspectives on law, such as natural law, legal positivism, legal realism, and critical legal studies, among others. Each school of jurisprudence offers its own understanding of the nature of law, its purpose, and how it should be applied in society.
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DNA and rna are both?
Answers
Answer:
DNA and RNA are both molecules that contain genetic information and are made up of nucleotides.
Plant and animal cells are both eukaryotic. Using the model, identify the similarities between the two cells.
Question 3 options:
Both have a plasma membrane, ribosomes, mitochondria, and centrioles.
Both have a plasma membrane, ribosomes, mitochondria, and golgi apparatus.
Both have a cell wall, ribosomes, mitochondria, and endoplasmic reticulum.
Both have a mitochondria, nucleus, endoplasmic reticulum, and chloroplasts.
Answers
Answer:
Both have a plasma membrane, ribosomes, mitochondria, and golgi apparatus.
Explanation:
Animal cells don't have a cell wall nor chloroplasts. Centrioles are exclusive to animal cells.
Plant and animal cells both are eukaryotic.
The similarities between the two cells are that both have plasma membrane, ribosomes, mitochondria and golgi apparatus.
Major differences between plant and animal cellsPlant cells contain cell wall which maintains the integrity of the cell as well as protect the plant cell.
whereas, animal cell lack cell wall.
Plant cell contain chloroplast to carry out photosynthesis and make their own food.Whereas, an animals are heterotrophic that relies on plants for the
nutrients.
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Why is cytochrome-C evidence for a shared common ancestor among all eukaryotes?
Only prokaryotes produce cytochrome-C, not eukaryotes.
Cytochrome-C has changed significantly from organism to organism.
The enzyme isn't necessary for survival but is found everywhere.
It's an enzyme necessary for survival in all eukaryotic organisms.
Answers
Answer:
It’s an enzyme necessary for survival in all eukaryotic organisms.
Answer: it's an enzyme necessary for survival in all eukaryotic organisms.
Explanation: i took the test and got it right !
Among the following groups of atoms, which have the same outer energy level configurations?.
Answers
Due to their shared group membership in the periodic table, N, P, As, and Bi all possess the same outermost energy barrier configurations.
The periodic table divides chemical elements into groups based on the outer energy level electrical arrangement of their atoms. Chemical characteristics and reactivities with the other elements are governed by the valence electrons of a elements in periodic table. The quantity of electron pairs in an element's outer energy level determines its chemical characteristics. The amount of valence electrons in each group of elements is the same. These substances share several chemical characteristics. N, P, As, & Bi are classified as elements in group 13 of a periodic table. They all have ns2np3 as their outer shell electrical configuration. They all have a valence shell with five electrons and have comparable chemical characteristics.
(Among the following groups of atoms, which have the same outer energy level configurations?a. h, he
b. li, be, n, ne
c. mg, al, ca, ga
d. n, p, as, bi)
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Researchers have undertaken a long-term study of populations of rock pocket mice, Chaetodipus intermedius, in Arizona and New Mexico. Rock pocket mouse fur is either dark or light in color. Most of the populations studied live in areas with light-colored granite rocks; however, some areas are dominated by dark-colored rocks from ancient lava flows. Researchers collected mice from six sites in Arizona and recorded their coat colors. Figure 1 shows the study sites, the rock colors, and the distribution of coat colors. In the Arizona populations, the melanocortin-1 receptor (MC1R) gene is responsible for coat color phenotype (light or dark). The MC1RD allele, which results in a dark coat, is dominant to the d allele. Researchers collected samples of mice from all six study sites and sequenced the MC1R gene. They also collected mice with dark coats from a location in New Mexico, the Carrizozo lava flow, to determine if the MC1Rgene was also responsible for the dark coat colors observed in that population. The rock pocket mouse population in Carrizozo is isolated from the populations in Arizona. Table 1 presents the genotypic data from sampled mice from all seven locations. Which of the following best describes the processes occurring between the mouse populations and their environments?
Answers
The processes occurring between the mouse populations and their environments is natural selection.
The color of the mouse's fur coats is determined by the melanocortin-1 receptor (MC1R) gene, and the MC1RD allele is dominant to the d allele.
The mice living in the areas with light-colored granite rocks are more likely to have a light coat due to natural selection, while those living in areas with dark-colored rocks from ancient lava flows have a higher chance of having a dark coat.
The table of genotypic data from the mice in the seven locations provides evidence of this phenomenon.
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HELP ME PLEASE 10 pts and brainliest!
Answers
Answer:
c is it I think
Explanation:
Earth is a closed system. That means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on Earth . So, it is essential that biogeochemical cycles these materials as they move through Earth's subsystems.
Answers
Earth is a closed system, which means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on Earth remains constant. So, it is essential that biogeochemical cycles renew these materials as they move through Earth's subsystems.
What are biogeochemical cycles?Biogeochemical cycles may be defined as the flow of chemical elements and compounds between living organisms and the physical environment for the need of each other.
The complete question is as follows:
Earth is a closed system. which means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on earth ___. So, it is essential that biogeochemical cycles __ these materials as they move through earth subsystems.
remains constant, can increase, can decrease.destroy, create, renew.The biogeochemical cycles on the earth's planet are accountable for processing the identical old rocks, metals, carbon, nitrogen, oxygen, water, and other abiotic implications on Earth in order to intrinsically revitalize them and construct them obtainable for reuse for the organisms need.
Therefore, it is well described above.
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Answer:
Earth is a closed system. That means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on Earth remains constant. So, it is essential that biogeochemical cycles renew these materials as they move through Earth's subsystems.
Explanation: ed mentum or plato
Helppppp please What characteristic of water
means that clear water is not
necessarily clean water?
A. the density of the water
B. high specific heat capacity
C. the temperature of the water
D. ability to act as a universal solvent
Answers
Answer:
B
Explanation:
Ability of water to act as a universal solvent means that clear water is not necessarily clean water. Therefore, option (D) is correct.
What is clean water?Clean, safe water is defined by the USGS as "water that won't hurt you if you come in touch with it." Although drinking water is often mentioned when discussing clean water, clean water is also crucial for all residential uses.
It is impossible to smell, taste, or even see the microscopic contaminants that pollute water, such as bacteria, viruses, and parasites. Therefore, just because your water is clear doesn't imply it's okay to drink.
Therefore, due to the fact that water is a universal solvent, meaning that it is capable of dissolving a wide range of substances with relative ease clear water is not considered clean.
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A reaction is catalysed by an enzyme.
Figure 2 shows how temperature
affects the rate of this reaction.
rada
4-5
Rate of Reaction (units)
Explain why the reaction has stopped at point Z.
40
30
20
0
Figure 2
1
10 20 30 40 50 60
Temperature (°C)
Look at points X and Y on Figure 2.
Describe the relationship between rate of reaction and temperature between points X and Y.
Answers
Answer:
2.1)As Temperature increases, the rate of reaction increases.
2.2)Enzymes are sensitive to changes in temperature. At point Z, the temperature beacame too high for the enzyme to function, thereby denaturing the enzyme. Once the enzyme was denatured the reaction could not continue.
ASAP!! I am doing combined science higher can someone help me please
what happens to blood flow during exercise? 6 marker
Answers
Blood flow to the exercising muscles of the brachium and thigh increased by 31- to 38-fold during moderate exercise and by 70- to 76-fold during severe exercise.
why do biologists measure the number of trophic levels in an ecosystem?
A. to check its stability and health
B. To see if has any food chains
C. To find new treatments for diseases
D. To Make it helpful for humans
Answers
Cell-mediated immunity is directed against endogenous antigens, and therefore intracellular parasites. The antibody immune response primarily targets exogenous antigens and is therefore largely effective against extracellular pathogens. Group of answer choices True False
Answers
The given statement, Cell-mediated immunity is directed against endogenous antigens, and therefore intracellular parasites. The antibody immune response primarily targets exogenous antigens and is therefore largely effective against extracellular pathogens is true.
Because Cell-mediated immunity is an important component of the body's immune system that is responsible for defending against intracellular pathogens and other antigens that are not recognized by the antibody immune response.
This type of immunity is mediated by T-cells, which are a type of white blood cell that specifically targets and destroys infected cells. T-cells are able to recognize and respond to antigens presented by antigen-presenting cells, such as macrophages. Once activated, the T-cells then secrete cytokines, which act to recruit more T-cells and activate them.
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What are the different types of interactions in nature?
List the helpful interactions.
List the harmful interactions.
(WILL MARK BRAINLIEST)
Answers
Competition: When two or more organisms compete for the same resources, such as food or territory.
Predation: When one organism (the predator) kills and eats another organism (the prey).
Mutualism: When two organisms of different species benefit from their interaction with each other.
Commensalism: When one organism benefits from an interaction with another organism, but the other organism is not affected.
Parasitism: When one organism (the parasite) benefits at the expense of another organism (the host).
Helpful Interactions:
Mutualism: As mentioned above, mutualism is a type of interaction where both organisms benefit from the relationship. For example, bees and flowers have a mutualistic relationship where bees pollinate the flowers, and in turn, the flowers provide nectar and pollen for the bees.
Commensalism: One example of commensalism is when a bird builds its nest in a tree. The bird benefits from the shelter and safety provided by the tree, but the tree is not affected by the presence of the bird.
Harmful Interactions:
Competition: When two or more organisms compete for the same resources, it can lead to harm or even death of one or more of the organisms involved.
Parasitism: Parasites can cause harm to their host by weakening them, stealing nutrients, or transmitting diseases.
Predation: Predators kill and eat their prey, which can have negative effects on the population of the prey species.
Hey guys can you guys help just to be sure im doing this right
Answers
Answer:
option C. x \(\leq\) 8
Explanation:
x + 5 \(\leq\) 13
x + 5 -5 \(\leq\) 13 -5 ........subtract by 5 on both sides
x \(\leq\) 8