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telo118 [61]
3 years ago
11

What is the basic unit of a nucleic acid?

Biology
2 answers:
Dimas [21]3 years ago
7 0

The basic repeating unit of nucleic acids are known as nucleotides

ahrayia [7]3 years ago
3 0

Basic unit of a nucleic acid is a nucleotide . The nucleotides are attached in a series to form a polymer called nucleic acid. There are ribonucleic acid and deoxyribonucleic acid. I’m pretty sure.

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Why is osmosis important to cell function???????
laiz [17]
It helps move wastes out of the cell and allows water and nutrients to move into the cell
7 0
3 years ago
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A patient with heart failure has a new order for captopril (Capoten) 12.5 mg PO. After administering the first dose and teaching
Harlamova29_29 [7]

Answer:

I will call for help when I need to get up to use the bathroom.

Explanation:

Captopril is the drug that used for the treatment of heart failure and high blood pressure. Captopril is taken in different dosage and amount depending on the severity of disease and age of an individual.

The captopril has severe side effects that includes tingling, numbness, breath shortness and excess or no urination at all. The drug can cause dizziness, loss of movement and an individual may faint on standing. The individual should not go alone for washroom after taking captopril drug.

Thus, the correct answer is option (c).

8 0
3 years ago
The human genome contains about 3 billion base pairs. During the first cell division after fertilization of a human embryo, S ph
Nataly [62]

Answer:

5556

Explanation:

If a DNA polymerase synthesizes in average 50 nucleotides/second, that means that in three hours (10800 seconds) it synthesizes about 540000 nucleotides.

However, if the human genome is composed of 3000000000 (3 billion) base pairs (nucleotids), the minimum number of DNA polymerases (working in the same number of origins of replication) to finish the duplication of all the genome in three hours is 5555,5. (3000000000/540000). As we know there is no half polymerase, so we round to 5556.

5556 molecules of DNA polymerases acting on 5556  origins of replication are needed.

7 0
3 years ago
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All of the following are true of spermatogenesis EXCEPT: Question 18 options: DNA replicates once, but cells divide twice. The p
jolli1 [7]

Answer:

  • One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.

Explanation:

Germ cells are diploid reproductive cells in charge of gamete production. Germ cells divide by mitosis and meiosis. Through mitosis, they originate more sexual cells, but through meiosis, they produce gametes -sperm and egg cells-. This process is known as gametogenesis.

Gametes´destiny is to merge during fecundation, and a new diploid cell called zygote emerges through fertilization. The zygote is a complete cell and suffers successive mitosis to form the new organism.

Spermatogenesis is the process of production and maturation of sperm cells. Spermatogonia are the masculine diploid germ cells, carrying 46 chromosomes. These germ cells suffer mitosis to reproduce. Some of them stay as spermatogonia, and some others become primary spermatocytes, which are in charge of gamete production. Primary spermatocytes are also diploid cells, meaning that they still carry 46 chromosomes.

Each primary spermatocyte replicates its genetic material and then goes through meiosis I to produce two daughter haploid cells called secondary spermatocytes, each of them carrying 23 chromosomes. Each secondary spermatocyte will produce two other haploid daughter cells by meiosis II.

The total result from the two cellular divisions of each primary spermatocyte is four haploid daughter cells called spermatids.

During spermiogenesis, spermatids mature into spermatozoa or sperm cells. Each sperm cell characterizes by being composed of a head, midpiece, and tail.

  • DNA replicates once, but cells divide twice TRUE
  • The products are spermatozoa that each have a head, midpiece, and tail TRUE  
  • Spermatids containing 23 chromosomes (1n) are produced TRUE
  • One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.
  • Genetically diverse spermatids are created TRUE
4 0
2 years ago
A split-brain client is shown a frog in her right visual field. she is asked to identify what she sees. she most likely will be
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Tell and write the answer at the same time
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