PLEASE HELP. Why is the Krebs cycle so important if it only produces 2 ATP molecules? a) It produces reducing agents for the electron transport chain
b) It oxidizes pyruvate and prepares it for the electron transport chain
c) It uses all the glucose we eat
d) It produces many CO2 molecules

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

Which of th following best describes how genes produce traits in an organism?