If you placed a red blood cell in a solution that contains less solute than the cell, you would predict that its volume would ________ while the solute concentration in its cytoplasm would ________.
A. decrease; decrease
B. increase; increase
C. decrease; not change
D. decrease; increase
E. increase; decrease
Answer: E
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The resting potential of a neuron is approximately
a. ?70 microvolts. b. ?70 millivolts. c. ?70 volts. d. ?70 electrovolts. e. ?70 megavolts.
Assume that you are told that a particular organism, Drosophila, has the XO chromosome complement. You are also told that the autosomal complement is a normal 2n. You know that in humans the XO complement is female determining
Would you be correct in assuming that the Drosophila sex for XO is also female? Choose the answer that includes the correct explanation.
A couple visits a fertility clinic to determine the basis of their difficulty in conceiving a child. They are surprised to hear they will both be tested for levels of two of the same hormones, which play roles in the ovarian cycle and sperm production. Which hormones are they?
A. Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) B. Insulin and glucagon C. Oxytocin and luteinizing hormone (LH) D. Adrenocorticotropic hormone (ACTH) and corticotropin-releasing hormone (CRH)
Most antimicrobial drugs are derived from which two bacterial and which two fungal genera?
> Bacillus > Streptomyces > Penicillium > Cephalosporium > Clostridium > Saccharomyces