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zzz [600]
3 years ago
9

DNA, rna, and starch: what do they all have in common

Biology
1 answer:
marishachu [46]3 years ago
4 0
They are all polymers.

DNA is a polymer of deoxyribonucleotides, RNA is a polymer of ribonucleotides, starch is a polymer of glucose.
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Describe the neural and hormonal mechanisms that work to maintain blood pressure after significant (hemorrhaging) blood loss ass
Bad White [126]

Autoregulatory neural and endocrine mechanisms activate after blood loss to compensate for the loss and restore homeostasis.

Neural mechanisms involve blood pressure and blood chemistry. Cardiac centers and vasomotor centers may increase the blood flow and cardiac output (sympathetic) or decrease the blood flow and cardiac output (parasympathetic). Peripheral vessels are also constricted and nor epinephrine decreases flow in the arteries and decreases the flow in the veins.

Endocrine control acts in the renal and adrenal organs, the brain and heart. RBCs, renin/angiotensiogen/aldosterone, catecholamines, antidiretic hormone, atrial natriuretic hormone regulate blood volume and blood pressure by keeping the fluids in the cardiovascular system. It also initiates vasoconstrictors or vasodilators.

8 0
3 years ago
Mitosis can occur in both haploid and diploid cells, but meiosis cannot occur in haploid cells. Why not?.
allochka39001 [22]

Mitosis can occur in both haploid and diploid cells because it is equational division where the number of chromosomes remain the same after division. But meiosis cannot happen in haploid cells because it is reductional division and haploid cells do not have any extra copy of chromosomes to be halved.

Mitosis is the cell division where the number of chromosomes do not change after cell division. It usually happens in the somatic cells of the body. Cancer cells also undergo mitosis

Meiosis is the cell division where the number of chromosomes are halved after cell division. The process of meiosis occurs in two phases: meiosis I and meiosis II. The germ cells of the body undergo meiosis.

To know more about mitosis, here

brainly.com/question/26678449

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4 0
9 months ago
University of illinois microbiologist carl woese showed us the relationship between all life forms on the planet and taught us t
MAVERICK [17]

Answer:

to sign the constitution of its treaty

3 0
1 year ago
Part A Which of the following statements regarding the umbilicus and the chin is true?
garik1379 [7]
D. The umbilicus is caudal to the chin

The terms caudal and inferior are synonymous, meaning "away from the head end or toward the lower part of a structure or the body; below." The umbilicus is caudal (inferior) to the chin.
4 0
3 years ago
Photosynthesis in the earth's forest produces about half of the oxygen in the atmosphere. Photosynthesis in the earth's oceans p
tester [92]
I think it is because in the ocean the plankton produces most of the oxygen which is used by aquatic plants and plankton is a primary producer known as autotrops.
7 0
3 years ago
Read 2 more answers
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