Sam's defective cytochrome b enzyme results in the malfunction of the mitochondrial system for

a. electron transport.

b. dna replication

c. atp synthetase

d. mitochondrial protein production.

The correct answer is a. electron transport.

Explanation:

Cytochromes play an important role in the transfer of electrons from NADH and FADH2 to molecular oxygen during oxidative phosphorylation in mitochondria. So cytochromes makes the electron transport chain of mitochondria.

Therefore if cytochrome b enzyme becomes defective then cytochrome b will not work and the transport of electron through electron transport chain will stop. So there will not be any production of ATP in oxidative phosphorylation due to the blockage in electron transport.

Therefore the right answer is a. electron transport.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

b) the inside picture would look at a very high temperature in a very low ph