____ are involved in transfer of genetic
information from one bacterial cell to another.
a. Flagella
b. Cilia
c. Pili
d. Ribosomes
e. Plasmids
B
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It is known that many trees lose their leaves in response to decreasing day length. As a result, you think that Gingko trees may also lose their leaves in response to decreasing day length. This statement is an example of:
A. a theory B. deductive reasoning C. an experiment D. a hypothesis
Which of the following determines the force production in muscle contraction?
a. the amount of acetylcholine released into the synapse b. the speed of the acetylcholinesterase acting to break down acetylcholine c. the number of myofibers receiving an action potential from the neuron d. the length of the sarcomeres involved in the contraction
Which of the following proteins would be a good drug target for interfering with microfilament network breakdown?
A) profilin B) CapZ C) gelsolin D) tropomodulin E) calmodulin
Which example describes biological evolution?
A) You are vaccinated against polio and are protected against the disease. B) A tree branch is broken off and another grows in its place. C) Over time, a caterpillar species becomes as green as the leaves it eats. D) The average woman's dress size has increased over the last 50 years.