Oxygen is important in cellular respiration but it does not come into the reaction until the final stage and acts as the?
an additional source of energy
an enzyme in the reaction
the waste product of respiration
the final hydrogen acceptor

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks