The human genome contains approximately 40,000 genes
a. True
b. False
Indicate whether the statement is true or false
False
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Chloroplasts are thought to have evolved from cyanobacteria. Which of the following observations support this hypothesis? (Select all correct choices.)
A. They both have similar internal membranes that organize the light reactions of photosynthesis. B. They both have small circular DNA genomes. C. They both have cell walls. D. They both have the capability of movement through flagella.
When a species consisting of a single large population slowly evolves over many generations into a new species, this an example of
A. synapomorphy. B. cladogenesis. C. anagenesis. D. monospeciation. E. horizontal gene transfer.
In mammals, the filtrate leaves the blood by exiting from the
a. efferent arteriole. b. peritubular capillaries. c. renal artery. d. afferent arteriole. e. glomerulus.
Serves as an intracellular second-messenger molecule
a. Adenylate cyclase b. G-protein c. Carrier protein d. cAMP e. Ion channel receptor protein