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Sergeeva-Olga [200]
2 years ago
14

The layer of the atmosphere where many airplanes fly to avoid thunderstorms and other turbulence is called A. troposhere B. stra

tosphere C. mesosphere D. thermosphere
Biology
1 answer:
nordsb [41]2 years ago
5 0

Answer: B. stratosphere

Explanation:

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PH scale *
kondor19780726 [428]

Answer:

d

Explanation:

measures hydrogen ion concentration

The pH of a solution is a measure of the concentration of hydrogen ions in the solution. A solution with a high number of hydrogen ions is acidic and has a low pH value. A solution with a high number of hydroxide ions is basic and has a high pH value. The pH scale ranges from 0 to 14, with a pH of 7 being neutral.

5 0
2 years ago
The leg muscles of a sprinter would differ from a marathon runner in that ________. The leg muscles of a sprinter would differ f
andrew11 [14]

Answer:

The correct answer is - per gram, the marathon runner's muscles would contain more myoglobin than the sprinter's muscles.

Explanation:

Marathon runners have smaller leg muscles and thinner quads and calves as marathon runners require slow-twitch muscles while in sprinters the fast-twitch muscle requires. Slow-twitch muscles of marathon runners have more amount of myoglobin, per gram than fast-twitch muscles.

Myoglobin acts as local oxygen storage that provides oxygen to the muscles in case of less oxygen supply than required temporarily and a marathon race is an intense exercise or activity that requires more oxygen.

6 0
2 years ago
What is the role of phospholipids and proteins in controlling the passage of substances across the cell surface membrane, making
Anastaziya [24]
Phospholipids are the substance/structure that is the building block of the cell membrane. Without phospholipids, we wouldn't even have a cell membrane and wouldn't really have any way how to shield and guard or control th epassage of substances across the cell surface. The cell membrane is at the same time partially permeable; this means it will let certain ions that can be found in the intra and extracellular fluid in and out, while others will be kept from moving so freely. 
8 0
3 years ago
When planning a healthful diet using the USDA Eating Patterns, vegetarians should remember that: a. modifications are prohibited
denis-greek [22]

Answer:

<em>The correct option is c) the vegetable group contains legumes, which can be counted as protein foods.</em>

Explanation:

The USDA Food Patterns were formulated so that people could be helped in carrying out Dietary Guidelines recommendations. These Guidelines help people understand and identify the daily food which they shall consume. There are three basic lifestyles of diet which these guidelines describes:

1) The Healthy U.S.-Style Pattern

2) the Healthy Vegetarian Pattern

3)  Healthy Mediterranean-Style Pattern

These guidelines also describe that legumes are an excellent food which shall be consumed by all vegetarians as they are an excellent source of proteins.

5 0
3 years ago
What types of antigen do T cells NOT recognize? What types of antigen do T cells NOT recognize? self-antigens bacterial antigens
Stolb23 [73]

Answer:

Self-antigens are not recognized and attacked by the T cells.

Explanation:

In immunology, the antigens are those substances which are bound by the antibodies. The antigens can be originated from within the bodies, known as self antigens or from outside the body, known as non-self antigens. The immune system identifies and attacks non-self invaders or the foreign harmful objects present in the body. It does not attack the self-antigens under the normal conditions. This is due to the negative selection of T cells of the thymus.

4 0
2 years ago
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