The difference between chromatin material and chromosomes is
A. their structure.
B. the kinds of atoms that they contain.
C. where you find them.
D. that one is a gas and the other is a liquid.
A. their structure.
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Imagine you conduct a parabiosis experiment with two strains of mice, one of which lacks a functional leptin gene (ob strain) while the other lacks a functional receptor for this hormone (db strain). Which of the following outcomes would you observe?
A. no weight change in the ob mouse B. no weight change in the db mouse C. increased body weight in the ob mouse D. decreased body weight in the ob mouse E. decreased body weight in the db mouse
The Krebs cycle requires
A. a four-carbon acid. B. coenzyme A (CoA). C. an acetyl group (2C). D. All of these answers are true.
Damage to its flagellum would prevent a choanocyte from
A. secreting spongin to form the sponge body. B. circulating water through the sponge. C. producing the supportive spicules. D. stinging and capturing prey.
The only body fluid that can transmit hepatitis B virus is blood.
Answer the following statement true (T) or false (F)