Which item or items are the same as a fertilized egg?
a. II only
b. III only
c. V only
d. II and III
e. III and V
Answer: c
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It has been determined from several human disease samples that bacteria exist that are 16S rRNA sequenced to be Gram-positive, but morphologically double-membraned like Gram-negatives, therefore requiring a new class.
Answer the following statement true (T) or false (F)
A neurotransmitter that was excitatory would produce an ______ that would ____ the postsynaptic neuron.
A. EPSP, depolarize B. EPSP, hyperpolarize C. IPSP, depolarize D. IPSP, hyperpolarize E. IPSP, not affect
What would happen if the G-protein coupled receptor in heart cells that binds to ACh had a mutation that caused it to bind more tightly to the G-protein alpha subunit?
A. G-protein activation and K+ channel opening would happen more quickly. Heart rate may remain abnormally low, impairing response to stress. B. This would lead to K+ flow out of heart cells, causing increased hyperpolarization. C. G-protein activation and K+ channel opening would be slowed. Heart rate may remain abnormally high, especially following stress. D. This would lead to K+ flow into heart cells, causing increased depolarization. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about G-proteins? What other information is related to the question? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A diploid organism contains _____
a. several copies of the same chromosomes b. only autosomes c. one copy of each chromosome d. chromosomes of equal size e. two of each type of chromosome