An upregulated cell has an increase in
A) the number of receptors available for binding.
B) the concentration of ligands that bind to the receptors.
C) the amount of DNA in the nucleus.
D) the number of molecules the cell secretes.
A
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Energy required _____________ is not internal work?
a. for active transport b. to pump blood c. to move the body in relation to the environment d. during synthetic reactions e. to maintain body posture
Which of the following represents the overall reaction for aerobic respiration?
A) 6 CO2 + 6 H2O ? C6H12O6 + 6 O2 B) C6H12O6 + 6 CO2 ? 6 O2 + 6 H2O C) 6 O2+ 6 H2O ? C6H12O6 + 6 CO2 D) C6H12O6 + 6 H2O ? 6 CO2 + 6 O2 E) C6H12O6 + 6 O2 ? 6 CO2 + 6 H2O
A friend of yours suffers a blow to the forehead and loses sensation in her scalp due to the crushing of peripheral nerves. Is there a possibility she will regain sensation in the area?
A. Yes, because the damaged neurons may regenerate through the process of mitosis. B. No, because damaged neurons have very limited potential for mitosis. C. No, because peripheral nerves lack an endoneurium and a neurilemma. D. Yes, because damaged peripheral axons may regenerate due to the presence of a neurilemma and an endoneurium. E. Yes, because satellite cells undergo mitosis and produce growth factors that enable damaged axons to regenerate.
While hormones can affect all types of target cells, neurotransmitters control:
A) Nerve, muscle, or gland tissue B) Muscle or epithelial tissue C) Gland and muscle tissue D) Connective tissue