题目内容

Phospholipids with short or unsaturated fatty acyl chains.

A. decrease membrane fluidity
B. increase membrane fluidity.
C. cause biomembranes to become thicker
D. allow hydrophilic molecules to diffuse across the lipid bilayer

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Which one of the following is the best technique/approach to allow you to localize catalase in peroxisomes?

A. a catalase monoclonal antibody and transmission electron microscopy
B. platinum or gold and scanning electron microscopy
C. FRAP and FRET
D. all of the above

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The drug taxol acts to Altered (改变) function of which cytoskeletal structure or filament might cause defects in muscle contraction?

Actin filaments
B. Intermediate filaments
C. Microtubules
D. Centromes

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Which of the following mutations to the Gα protein could render（致使） a G protein-coupled receptor signaling pathway constitutively active?

A. Gα cannot bind Gβγ
B. Gαcannot hydrolyze GTP
C. Gα protein cannot bind GDP
D. Gα protein cannot release GDP

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Which enzyme plays a role in regulating rhodopsin-induced closing of cation channels?

A. guanylyl cyclase
B. adenylyl cyclase
C. phosphodiesterase
D. a and c

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Phospholipids with short or unsaturated fatty acyl chains.

A. decrease membrane fluidity B. increase membrane fluidity. C. cause biomembranes to become thicker D. allow hydrophilic molecules to diffuse across the lipid bilayer

Which one of the following is the best technique/approach to allow you to localize catalase in peroxisomes?

The drug taxol acts to Altered (改变) function of which cytoskeletal structure or filament might cause defects in muscle contraction?

Which of the following mutations to the Gα protein could render（致使） a G protein-coupled receptor signaling pathway constitutively active?

Which enzyme plays a role in regulating rhodopsin-induced closing of cation channels?

A. decrease membrane fluidity
B. increase membrane fluidity.
C. cause biomembranes to become thicker
D. allow hydrophilic molecules to diffuse across the lipid bilayer