What is a fruit?
A) A plant embryo
B) The protective endosperm
C) A swollen plant zygote
D) A mature ovary
D
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Many chaperones are called heat-shock proteins because they
a. are expressed at higher levels after a heat shock than at normal growth conditions. b. cause fever in mammals. c. misfold during a heat shock. d. denature at high temperatures.
What is the name of the site on an enzyme where regulatory molecules bind? a. None of these choices
b. Active site c. Product d. Allosteric site e. Substrate
Which of the following reaction pathways is NOT part of the second stage of aerobic respiration?
a. electron transfer phosphorylation b. acetyl-CoA formation c. Krebs cycle d. glycolysis e. [electron transfer phosphorylation] and [glycolysis]
During your annual physical, a nurse takes your blood pressure by wrapping a sphygmomanometer cuff around your upper arm, which modulates the flow of blood through your brachial artery. The nurse then enters a reading of 115/70 in your medical chart. These numbers mean that the
A. pressure in your brachial artery during ventricular contraction is 115, while the pressure during ventricular relaxation is 70. B. nurse heard sounds through the stethoscope only when the pressure in your brachial artery was exactly 115 and again when it was exactly 70. C. diastolic pressure is 115 and the systolic pressure is 70. D. pressure in the ventricles of the heart is 115 when the ventricles are contracting and 70 when the ventricles are relaxing. E. pressure in your brachial artery during ventricular contraction is 115 while the pressure during atrial contraction is 70.