Oxyhemoglobin contains _____.
A. oxygen bound irreversibly to a heme group
B. carbon dioxide
C. carbonic anhydrase
D. bound oxygen in the absence of a heme group
E. oxygen bound reversibly to a heme group
Answer: E
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During which phase of gamete production do sister chromatids separate?
a. meiosis I b. meiosis II c. fertilization d. mitosis I e. mitosis II
Identical twin raccoons are raised in different environments and yet behave very differently. This is an example of
A) heterozygous alleles. B) the norm of reaction. C) genetic differentiation. D) acclimation.
When a stimulus is applied to a receptor in the skin, an action potential is propagated along a neuron to the brain, where another signal is sent back to the muscle for a response. Which of the following best describes what occurs when the action potential reaches a chemical synapse at the end of an axon?
(A) The action potential jumps from one axon to the next connecting axon. (B) The action potential travels through the synapse to the next connecting dendrite. (C) The action potential jumps the synapse to the next connecting dendrite. (D) The action potential causes a release of neurotransmitters that travel across the synapse.
What is the name of a form of extrachromosomal inheritance that is due to transmission of symbiotic or parasitic microorganisms?
A) uniparental genome transfer B) infectious heredity C) pathogenic paternal transfer D) organellar inheritance E) microbial genomic transfer