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Ymorist [56]
3 years ago
9

Why is information oftenly missing from a scientific model?

Biology
1 answer:
rosijanka [135]3 years ago
7 0
Let me check somthin really quick <span />
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The movement of water in or out of the cell membrane without the use of ATP.
dimulka [17.4K]
The answer is Osmosis because its the only one that has anything to do with water
3 0
3 years ago
Read 2 more answers
Select all the correct answers.<br> Which two statements are true for the leading strand in DNA?
Ghella [55]

Question: Which two statements are true for the leading strand in DNA?

It is synthesized toward the replication fork.

It is synthesized in the 3′ to 5′ direction.

It is synthesized away from the replication fork.

It is synthesized in the 5′ to 3′ direction.

Answer:

The two statements that are true for the leading strand in DNA are "it is synthesized toward the replication fork and it is synthesized in the 5′ to 3′ direction"

Explanation:

Leading strand in DNA is the strand of new DNA being synthesized in the same direction where the replication fork is moving. The movement of replication fork allows the access of template for the new DNA. The DNA synthesis is continuous in the leading strand. It is synthesized in the 5' to 3' as DNA synthesis always takes place in this direction. This is because dNTP ( deoxyribonucleoside triphosphate) provides free 3' OH group where new dNTP can be added by the enzyme DNA polymerase.

3 0
3 years ago
A 21-year-old college student presents for her first annual exam. She has been sexually active for 1 year and has had two partne
mojhsa [17]

Answer:

<h2>Diseases transmitted through sexual contact are sexually transmitted diseases. Individuals having more than one sexual partners and doing unprotected sex are more prone to sexually transmitted diseases.</h2>

Explanation:

Individuals having more than one sexual partners and doing unprotected sex are more prone to sexually transmitted diseases. Here, the college student has more than one partner and not always use the condoms. So, she is prone to have sexually transmitted diseases if her partner are infected. Presence of warts indicates that she might have infected with Human Papillomavirus (HPV). HPV is a sexually transmitted infection (STI).

5 0
3 years ago
In a certain population of fruit flies, 640 out of 1000 have red eyes, while the remainder have sepia eyes. The sepia eye trait
irga5000 [103]

Answer:

The correct answer is 160.

Explanation:

Based on the given question, the total number of fruit flies is 1000, of which red eye flies are 640. Thus, the number of sepia eye flies will be 1000-640 = 360.  

On the basis of the Hardy-Weinberg equation, p+q = 1, in which p is the rate of recurrence of one allele, that is, dominant and q is the rate of recurrence of the other allele, that is, recessive.  

q^2 for the population is 360/1000 = 0.36, q = 0.6.  

Therefore, p = 1-q = 1-0.6 = 0.4.  

The frequency of homozygous dominant allele is denoted by p^2 = 0.16.  

Hence, the number of homozygous dominant for red eye color would be 16% of 1000 which will be equal to 160.  

5 0
3 years ago
Read 2 more answers
Osmosis and tonicity
Sergio039 [100]

The blood cells likely placed in a "hypotonic solution".

<u>Option: A</u>

<u>Explanation:</u>

When human blood cells are immersed in a solution with a low concentration of solute than is present in cells, osmosis allows water to pass through the cells, allowing the cells to get swollen; such a fluid is hypotonic to the cells. But when held in a solution with a greater concentration of solute, osmosis allows water to pass out of the cell, the cell is smaller and crenated in form; then a solution is hypertonic to the cells.

Healthcare facilities preserve human blood cells in a plasma solution that has the proper salt and protein ratios. Such solution is formulated to be mildly hypertonic to the red cells, thus maintaining the integrity of the cells and avoiding hemolysis.

8 0
3 years ago
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