Question 1

Most Tibetans do not compensate for the low oxygen of their environment with an increase in red blood cells; perhaps their mitochondria have evolved a less oxygen-dependent method of catabolizing sugar and producing CO₂.

Accepted Answer

The answer of Most Tibetans do not compensate for the...

Question 2

Most individuals respond to a prolonged stay at high altitude by producing more hemoglobin, producing more red blood cells, or both.

Accepted Answer

This is true. The body's response to prolonged high altitude exposure is to increase the production of hemoglobin, the protein in red blood cells that carries oxygen, and also to produce more red blood cells to transport oxygen more efficiently to the body's tissues. This is called acclimatization and helps the body compensate for the lower oxygen levels at high altitude.

Question 3

Several plant pigments have significant antioxidant qualities and can protect a cell from the damage inflicted on its biomolecules by free radicals.

Accepted Answer

Several plant pigments, such as carotenoids and flavonoids, have been shown to have antioxidant properties and can neutralize free radicals, protecting cells from damage.

Question 4

Oxidative phosphorylation includes an electron transport chain.

Accepted Answer

Oxidative phosphorylation involves the transfer of electrons through a series of protein complexes in the electron transport chain, leading to the synthesis of ATP.

Quiz 9: Photosynthesis and Cellular Respiration

Most Tibetans do not compensate for the low oxygen of their environment with an increase in red blood cells; perhaps their mitochondria have evolved a less oxygen-dependent method of catabolizing sugar and producing CO₂.

Most individuals respond to a prolonged stay at high altitude by producing more hemoglobin, producing more red blood cells, or both.

Several plant pigments have significant antioxidant qualities and can protect a cell from the damage inflicted on its biomolecules by free radicals.

Oxidative phosphorylation includes an electron transport chain.