Proteins are essential parts of all structures and biological processes in cells

a. True
b. False


True

Biology & Microbiology

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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 nucleosome consists of DNA wrapped around scaffolding proteins

__________________ Indicate whether the statement is true or false.

Biology & Microbiology

Match the organelle with its function

A) protein storage B) lipid storage C) photosynthesis D) starch storage E) nucleic acid production F) flower color G) chloride storage H) protein production I) chromosome movement J) plastid precursor 1) proplastid 2) amyloplast 3) chloroplast 4) chromoplast 5) elaioplast

Biology & Microbiology

Which hormones are secreted by the adrenal cortex, and regulate carbohydrate, protein, and fat metabolism?

A. Mineralocorticoids
B. Gonadocorticoids
C. Corticosteroids
D. Glucocorticoids

Biology & Microbiology