DNA-->Process A --> Messenger molecule-->Process B --> Proteins--> Cell Components & Enzymes
a. ribosome
b. nucleus
c. vacuole
d. cell membrane
Answer: b. nucleus
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Four of these statements are true about mitochondria. Which one is not true?
a. They have DNA. b. Their DNA can experience mutations. c. In animals, the mitochondria come from the mother. d. They undergo genetic recombination during fertilization. e. Their DNA can be used as molecular clock.
Four of the five answers listed below are the result of ADH (antidiuretic hormone) secretion. Select the
exception. a. water is reabsorbed in the distal tubule b. fluid volume of blood increases c. solute concentration in blood rises d. distal tubule and collecting duct become more permeable to water reabsorption e. solute concentrations decrease in blood
A population that is in genetic equilibrium is said to ____
a. have an equal number of homozygotes as heterozygotes for a given trait b. deviate from the Hardy-Weinberg law c. require genetic testing for estimation of allele frequencies d. lose genetic variation with each generation e. have an allele or alleles that remain constant generation to generation
Which of the following statements about apoptosis is true?
(a) Cells that constitutively express Bcl2 will be more prone to undergo apoptosis. (b) The prodomain of procaspases contains the catalytic activity necessary for procaspase activation. (c) Bax and Bak promote apoptosis by binding to procaspases in the apoptosome. (d) Apoptosis is promoted by the release of cytochrome c into the cytosol from mitochondria.