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Tpy6a [65]
2 years ago
11

7. Which of these are characteristics of viruses? (Select all that apply.)

Biology
1 answer:
lidiya [134]2 years ago
7 0

Answer:

I believe the answers are not living organisms and cannot reproduce without a host.

Explanation:

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In a two-compartment model of a cell with a K - and Cl --permeable membrane and a 10-fold excess of KCl in the inside compartmen
Keith_Richards [23]

Answer:

When the solutions (including inside and outside) were replaced by NaCl, the membrane potential changes from a negative value of -60 mV to a positive value of + 60 mV.

Explanation:

According to the Nernst equation the potential of the membrane for a two-compartment model of a cell for positive gradient of K⁺ ions is V = - 60 mVlogK'/K where K' = inside concentration of K⁺ ions and K = outside concentration of K⁺ ions. For a 10 fold excess of KCl in the inside compartment, K'/K = 10. So,

V = - 60 mVlogK'/K = - 60 mVlog10 = -60 mV.

For a negative gradient of Na ions is V = + 60 mVlogK'/K where K' = inside concentration of Na⁺ ions and K = outside concentration of Na⁺ ions. (Since the cell is selectively permeable to Na⁺ ions. So, Na ions to not flow out but in.)For a 10 fold excess of NaCl in the inside compartment, K'/K = 10. So,

V = + 60 mVlogK'/K = + 60 mVlog10 = +60 mV.

So, when the solutions (including inside and outside) were replaced by NaCl, the membrane potential changes from a negative value of -60 mV to a positive value of + 60 mV.

8 0
3 years ago
Although all of the cells in your body contain a complete set of dna, different types of cells arise because__________.
frosja888 [35]
Because different genes are switched on and off in each type of cell.
7 0
3 years ago
Why do you think it is important to study the science of human life (biology) in psychology
barxatty [35]

Answer:

to understand the human and animal behaviour

Explanation:

By looking at the biological bases of human behavior, psychologists are better able to understand how the brain and physiological processes might influence the way people think, act, and feel.

7 0
2 years ago
Bmi provides common language for doctors, dietitians and agencies like insurance companies to use as a method to determine an in
Ganezh [65]
BMI<span> (body mass index), which is based on the height and weight of a person, is an </span>inaccurate<span> measure of body fat content and does </span>not take into account muscle mass, bone density, overall body composition, and racial and sex differences.  <span>BMI is a substitute measure of body fatness because it is a measure of excess </span>weight<span> rather than excess body </span>fat<span>. Factors such as age, sex, ethnicity, and muscle mass can influence the relationship between BMI and body </span>fat<span>.</span>
6 0
2 years ago
The photograph below shows a portion of the Genesee River in western New York. Letters A,B,C and D are locations in the river.
fenix001 [56]

Answer:c

Explanation:

The curve slows it down

4 0
3 years ago
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