The zygote has
A. one copy of each chromosome.
B. one full haploid complement of chromosomes.
C. chromosomes identical to those of a sperm cell.
D. chromosomes identical to those of an egg cell.
E. two copies of each chromosome.
E. two copies of each chromosome.
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During which phase of cellular respiration is the majority of ATP formed?
A. Glycolysis B. The Krebs cycle C. Electron transport system D. Processing of pyruvic acid for the Krebs cycle E. All phases produce the same number of ATP molecules.
Which of the following are parts of the brain?
A. brain stem B. cerebellum C. diencephalon D. cerebrum E. central canal F. spinal cord
A primary transcript (immature, non-processed) single-stranded RNA molecule has the following nucleotide composition: 30% A, 20% G, 24% C, and 26% U. What is the nucleotide composition of the double-stranded DNA molecule from which it was transcribed?
a. 28% A, 22% G, 22% C, and 28% T b. 20% A, 30% G, 26% C, and 24% T c. 26% A, 24% G, 20% C, and 30% T d. 30% A, 20% G, 24% C, and 26% T e. 26% A, 24% G, 20% C, and 30% U
Which of the following statements is TRUE?
a) once a person reaches maturity, cell division stops unless it is to repair a wound
b) cell division in an adult signifies cancer
c) some specific cells throughout the body retain the ability to divide & replace themselves
d) growth continues on throughout life of an adult human