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levacccp [35]
3 years ago
12

Which of the following is not a major class of nutrients required by the human body?Select one:a. fiberb. carbohydratesc. protei

nsd. lipidse. vitamins
Biology
1 answer:
arlik [135]3 years ago
8 0

Answer:

a. Fiber

Explanation:

The major nutrients required by humans in food are carbohydrates, proteins, fats, vitamins, and minerals. Our food also has dietary fibers and water. Dietary fibers or fibers are also known as roughage. Fibers are present mainly in plant products such as whole grains, pulses, fruits and vegetables. Fibers only add bulk and do not provide any nutrients to us. However, dietary fibers help the body get rid of undigested food.

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You respond to a diving accident in which the victim tells you that she was descending and began suffering from severe pain in h
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Answer: Barotrauma

Explanation: Barotrauma refers to injuries caused by increased air or water pressure,

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How do you lose weight?
asambeis [7]
B. By using up less calories than you take
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Which of the following statements is consistent with the principle of competitive exclusion?
Marina CMI [18]

Answer:

D) Even a slight reproductive advantage will eventually lead to the elimination of the less well adapted of two competing species.

Explanation:

The competitive exclusion describes relationship between two species that compete for the limiting sources, and cannot coexist. It is enough for one species to have slightly advantage to be dominant over the other. As a consequence, other species (the weaker one) will be extincted (shift to a different ecological niche).

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3 years ago
Modern millipedes grow up to 1.5 inches long and have many legs. How might scientists classify a millipede fossil that is 1 foot
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4 0
2 years ago
Contrast the electron transport chain in photosynthesis with the one in cellular respiration by identifying sources of the high-
nlexa [21]

Respiration:

The respiratory chain detailed here is that of mammalian mitochondria:

NADH → NADH dehydrogenase → ubiquinone (coenzyme Q10) → coenzyme Q-cytochrome c reductase → cytochrome c → cytochrome c oxidase → O2;

succinate → succinate dehydrogenase → ubiquinone (coenzyme Q10) → coenzyme Q-cytochrome c reductase → cytochrome c → cytochrome c oxidase → O2.

It consists of the following elements:

The high transfer potential electrons of NADH are transmitted to coenzyme Q10 (ubiquinone) by NADH dehydrogenase, or complex I. Reduced coenzyme Q10 is ubiquinol Q10H2.

The electrons with a high succinate transfer potential are transferred to coenzyme Q10 by succinate dehydrogenase, or coenzyme II, also giving ubiquinol Q10H2.

Ubiquinol Q10H2 transfers its electrons to two cytochromes c under the action of coenzyme Q-cytochrome c reductase, or complex III.

Four cytochromes c each transfer their electron to an oxygen molecule under the action of cytochrome c oxidase, or complex IV. Two molecules of water are formed.

Each of these four respiratory complexes has an extremely complex structure partially included in the internal mitochondrial membrane. Apart from the complex II, they are proton pumps. The electrons circulate between these structures on liposoluble or hydrophilic electron transporters depending on the case.

Photosynthesis:

Photophosphorylation is the equivalent, for photosynthesis, of oxidative phosphorylation for cellular respiration. It constitutes the "light phase" of photosynthesis, that is, it groups together light-dependent reactions.

In plants, photophosphorylation occurs in the membrane of thylakoids, within chloroplasts:

H2O → photosystem II (P680) → plastoquinone → cytochrome b6f complex → plastocyanine → photosystem I (P700) → ferredoxin → ferredoxin-NADP + reductase → NADP +;

cyclic photophosphorylation: (ferredoxin →) plastoquinone → cytochrome b6f complex → plastocyanine → photosystem I (P700) → ferredoxin (→ plastoquinone).

Contrast:

<u>What he has in common is:</u>

*The sequence of several complex membrane proteins transporting electrons.

*The conversion of DNA into ATP.

<u>The differences</u> are in the transport proteins themselves, as well as the direction of H + flux (to the cytoplasm for photosynthesis, and to the mitochondrial matrix in respiration).

8 0
3 years ago
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