The cause of p53-related cancers is
A) fetal cells that remain in a child or adult, dividing too frequently.
B) continual expression of the telomerase gene, which keeps cells dividing.
C) deletion of cell cycle checkpoint genes.
D) failure to repair damaged DNA, allowing the cell to continue dividing.
D) failure to repair damaged DNA, allowing the cell to continue dividing.
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Identify the structure indicated by #1:
A. uterus B. cervix C. vagina D. ovary E. fallopian tube or oviduct
In freshwater sponges and other simple freshwater
animals, water flows into the body by __________. Fill in the blank(s) with the appropriate word(s).
The process illustrated in Figure 3-1 is called:a
condensation. b. protein synthesis. c. hydrolysis. d. dehydration synthesis. e. denaturation
RNA synthesis is also known as:
a. elongation. b. reverse transcription. c. termination. d. translation. e. transcription.