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

Biology & Microbiology

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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)

Biology & Microbiology

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

Biology & Microbiology

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?

Biology & Microbiology

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

Biology & Microbiology