Question 1 (2 points)
What does the illustration below represent?
RNA
Uracil
Monomer
DNA
Answer:
DNA
Explanation:
RNA is not a double helix
Uracil is on the RNA, this is a picture or DNA. Uracil is just one of the nucleic bases
This is not a monomer; it's actually a polymer
It is DNA because it is a double helix structure held together by the four nucleic bases.
The illustration below represents the double helical structure of DNA. Thus, the correct option for this question is D.
What is DNA?DNA stands for deoxyribonucleic acid. It may be defined as a type of molecule that contains the genetic information responsible for the development and function of an organism. It is present in the nucleus of the cell. DNA is the most common type of genetic material among living organisms.
The illustration below is not RNA because RNA is only made up of single-stranded. While uracil is a type of base which is particularly present in the RNA instead of thymine.
DNA is the polymer of building units or monomers of nucleotides which are generally present in the structure with the help of covalent and hydrogen bonding. There are various types of bases present over the nucleotide which defines the arrangement of DNA molecules.
Therefore, the illustration below represents the double helical structure of DNA. Thus, the correct option for this question is D.
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Cells spend most of their time in..... a. interphase b. mitosis c. cytokinesis b. both mitosis and cytokinesis
Answer:
interphase..............
Which statement describes an interaction between the biosphere and the atmosphere that is related to
photosynthesis?
A.During photosynthesis, plant roots take in water from soil.
B.During photosynthesis, plants take in carbon dioxide from the air.
C.Through photosynthesis, energy stored in plants is released into the air.
D.Through photosynthesis, energy stored in plants is transferred to humans who eat them.
Answer:
B.During photosynthesis, plants take in carbon dioxide from the air.
Explanation:
A.During photosynthesis, plant roots take in water from soil. - water is part of the hydrosphere, not the atmosphere.
B.During photosynthesis, plants take in carbon dioxide from the air. - this is true, the plant - a living thing and part of the biosphere - takes carbon dioxide from the atmosphere to use during photosynthesis.
C.Through photosynthesis, energy stored in plants is released into the air. - this is false, plants release oxygen into the atmosphere as part of photosynthesis , which synthesises glucose. It does not release energy.
D.Through photosynthesis, energy stored in plants is transferred to humans who eat them. - this is true, but does not involve the atmosphere (air in the environment)
Explain how scientists use geologic time to determine the age of landforms.
Answer:
Explanation:Following are the techniques or methods or approaches we can say that were used by the scientists to determine the geologic age:
1. Relative age dating
2. Absolute age dating.
3. Radiation measurement.
4. Stratigraphic superposition.
5. The fossil record.
The scientists used the method of relative dating to divide Earth's past in different chunks of time when alike organisms were on Earth. After that, to discover the actual number of years ago that events occurred, the scientists used the method of absolute dating.
PLEASE HELP!!! A scientist concludes that genetic inheritance of a mutated (changed) gene, such as a gene change that creates different-colored organisms in a population, is more beneficial to an organism over time and contributes to biological fitness. Discuss why a scientist would make that claim.
i posted a few min. ago and someone stole 30 points by answering and saying they couldnt help. please answer the question if you can and dont steal my points....
Answer:
When the organism inherits a mutated gene creating new colored organisms into the population, this can increase diversity. As more organisms inherit the same mutation, the population will become more variated, which can increase the organisms abilities to survive and adapt in a changing environment, and also improve the biological fitness of individuals; resulting in allowing more organisms to reproduce successfully.
Explanation:
Taxol is a drug that comes from the bark of a tree that binds and irreversibly stabilizes microtubules. It is often used during chemotherapy to kill dividing cancer cells. How does taxol block cell division
Taxol is a drug that comes from the bark of a tree that binds and irreversibly stabilizes microtubules. It is often used during chemotherapy to kill dividing cancer cells. How does taxol block cell division?
A-
Taxol prevents the contractile ring from forming and dividing the cell in two.
B-
Taxol prevents DNA replication.
C-
Taxol prevents chromosome condensation during prophase.
D-
Taxol prevents spindle formation and separation of chromatids.
Answer: D-
Taxol prevents spindle formation and separation of chromatids.
Explanation:
The Taxol is used as an anticancer drug formulation. It is obtained from yew tree. An anticancer drug affects the cell cycle machinery so as to limit the production of cancer cells. This drug ceases the microtube formation in animal cells. This prevents the spindle fiber formation and further prevents the mitosis of cancerous cancers as the chromosomes will not separate apart and so abnormal cells will not produce further.
(30 points) {brainliest} pls help
Which of the following refers to the physiological effects of drugs when administered to a living organism?
A. Immunology
B. Pharmacodynamics
C. Genetics
D. Pharmacokinetics
Answer:
B. Pharmacodynamics
Explanation:
Pharmacodynamics refers to the physiological effects of drugs when administered to a living organism?
Answer:
B. Pharmacodynamics
Explanation:
PF
What happens at the end of transcription?
Answer:
hope it helps..
Explanation:
RNA polymerase will keep transcribing until it gets signals to stop. The process of ending transcription is called termination, and it happens once the polymerase transcribes a sequence of DNA known as a terminator.
Answer:
The correct answer is mRNA detaches and moves to the ribosomes
Explanation:
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Which statement best describes how work and power are related?
A. Power is the amount of work done in a certain amount of time.
B. Power is the amount of work done multiplied by the distance over
which work is done.
C. Power is a measure of how much of the total work done is actually
useful.
D. Power is a measure of the amount of work done expressed in
units of energy
Answer:
its d i think
Explanation:
Based on Figure 1, which of the following statements best describes the epinephrine signaling pathway?
Group of answer choices
It involves the opening and closing of ion channels.
In involves enzymes activating other enzymes.
It involves changes in the expression of target genes.
It involves protons moving down a concentration gradient.
Answer:
It involves enzymes activating other enzymes.
Explanation:
Epinephrine activates glycolysis (i.e., glycogen breakdown) in skeletal muscle and at a lower level in the liver, which is more responsive to glucagon. When epinephrine binds to a G protein-coupled receptor, the receptor changes its conformation and then triggers a molecular cascade that involves the production of cyclic adenosine monophosphate (cAMP), a well known second messenger molecule in signal transduction pathways. Moreover, the beta-2 adrenergic receptor (ADRB2) is a G-protein-coupled receptor known to activate adenylate cyclase enzyme that leads to appropriate increases in cAMP and activation of protein kinase A (PKA).
Based on Figure 1, the statement that best describes the epinephrine signaling pathway is:
B. It involves enzymes activating other enzymes.
Epinephrine signaling pathway occurs when the neurotransmitters in the body helps the hormones to communicate with the epinephrine.
When this happens, there is a reaction within the receptor, causing it to become active.
As a result of this, there is a binding with the G-protein receptor which releases the cyclic adenosine monophosphate (cAMP).
This in turn, activates the other enzymes.
Therefore, the correct answer is option B
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Dogs have 39 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere. Once the chromosome has split, each chromatid is called a daughter chromosome. At the end of cytokinesis, how many daughter chromosomes will be found in each dog cell?
Answer:
39 daughter chromosomes
Explanation:
This question is describing the MITOTIC process, which involves the synthesis of two daughter cells from one parent cell. In mitosis, sister chromatids, which forms a chromosome, separates at their centromere to become individual chromosomes in their respective daughter cells.
N.B: Mitosis produces two daughter cells which are identical in chromosome number.
In this case, a dog is said to have 39 chromosomes in its diploid cell. Since two chromatids make up one chromosome, 78 chromatids will be found in the dog cell. The 78 sister chromatids that form 39 chromosomes will each separate at their centromere to form 39 daughter chromosomes in each daughter dog cell.
1 pts
Which of the following is best defined by "the amount of oxygen dissolved in arterial
blood plasma measured in kilopascals"?
Oxygen Capacity
O None of these are a correct choice
O Arterial Oxygen Content
Partial Pressure of Arterial Oxygen
O Oxygen Saturation
Answer:
Arterial Oxygen Content
because arterial is the amount of oxygen bound of hemoglobin plus the amount of oxygen dissolved in arterial blood
What is happening during prophase
What structure on plants is the location where photosynthesis takes place?
Root
Stem
Leaf
Flower
Answer:
It's the leaf, or it is called chloroplasts.
Explanation:
Answer: Leaf
Explanation:
Why does the American government strongly oppose the beliefs of communism?
Explanation:
Anti-communism is a communist-opposed popular organization and philosophy. It's been The United states Labor Union has long been heavily anti-communist. The Parliament, which is more leftist. In Russia, imperialism. Richard Wurmbrand spoke about his memories of being persecuted in Communist Moldova because of his religion.
Which statement is true?
Answer:
Explanation:
a is always true no matter what
A costumer wants to buy a 1:1 mixture of blue and red beans. Each blue bean is twice as massive as each red bean. If the clerk measure out five kilos of red beans, how many kilos of blue beans must be measure out?
2.5 kilsos because if you double that it goes to 5 kiilos.
please help me please help me
Answer:
maybe its c
Explanation:
What are some of the differences and similarities between a plant cell and an animal cell
Which of the following characteristics is shared by all modern living systems?
A. Multicellular body systems
B. Codons based on a triplet code
C. DNA as the genetic material
D. Sub-cellular organelles
Answer:
B-Condon's based on a triplet code
Expl
The characteristic shared by all modern living systems among the options provided is DNA as the genetic material. Therefore option C is correct.
DNA (deoxyribonucleic acid) is a molecule that carries the genetic instructions for the development, functioning, and reproduction of all known living organisms. It is a long, double-stranded helix structure composed of nucleotides.
Thus, DNA as the genetic material is a fundamental characteristic shared by all known modern living systems.
It encodes the instructions necessary for the development and functioning of an organism, allowing for the transmission of genetic information from one generation to the next.
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HELP PLEASE ASAP!! PLS HELP!
Answer: I think the first one is d and the second is a
Explanation:
What is the function of the labeled structures? А: B: C:
Answer:
A. dendrite B. Myelin sheath C. axon terminal.
Answer:
A. dendrite B. Myelin sheath C. axon terminal.
Explanation:
What process moves energy from Earth's surface to high in the troposphere?
a. solar energy
b. conduction
C. convection
d. the nitrogen cycle
Answer:
Explanation:
Energy is transferred between the Earth's surface and the atmosphere in a variety of ways, including radiation, conduction, and convection. The rate of energy transfer by conduction is higher when there is a large temperature difference between the substances that are in contact.
I’m timed somebody help me please
Answer:
Water vapor, carbon dioxide, and sulfur dioxide
Explanation:
most likely the first one
fill in the blank There are two types of vitamins, fat-soluble and _____ -soluble
There are two types of vitamins, fat-soluble and water -soluble.
Answer:Water solubel
Explanation:
Answer this please thanks!
A student wants to create a liquid volcano. The student observes bubbles in the soft drink prior to opening it.
The student first proceeds to open the soft drink bottle and place it on the floor.
Next the student drops candy tablets into the drink using a rolled piece of paper, so that the tablets are able to fall into the drink continuously. The student notices a very powerful reaction as the drink fizzes and starts to bubble.
Answer:
The candy tablets being added to the drink. (A)
Explanation:
I took the test on edge.
1
The basic particles of elements are called
Which statement describes photosynthesis?
a. Carbon dioxide and water combine to form glucose and oxygen.
b. Carbon dioxide and glucose combine to produce energy and water.
c. Carbon dioxide, glucose, and water are released to produce energy.
d. Carbon dioxide and water are released when glucose and oxygen combine.
Answer:
Your answer is A). In the presence of sunlight, plants take in the CO2 that we breathe out, and absorb water from the ground to make glucose (which the plant will use for energy when the sun isn't out), and oxygen which we breathe in again.
Answer it please ty!