NAD+ accepts a hydrogen ion (H+) and two electrons (2e−), as it becomes reduced to NADH + H+. The NADH moves to the electron transport chain and donates a pair of electrons (becomes oxidized) to the first compound in the chain.
Explanation:
Answer: D. Extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted.
B) cell because all living things are made up of cells
Answer:
d
Explanation:
im pretty sure , srry if wrong
Answer:
C
Explanation:
In biology, homeostasis is the state of steady internal, physical, and chemical conditions maintained by living systems. This is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance, being kept within certain pre-set limits.
