A tidepool exposes organisms to all the following except:
a. desiccation.
b. thermal stress.
c. salinity changes.
d. pH changes.
e. dissolved oxygen changes.
A
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a. epididymis b. seminiferous tubules c. penis d. prostate gland e. vas deferens
Marine cone snails, Conus magus, are the source of ________
A) calcitonin used to treat osteoporosis B) growth hormone used to treat dwarfism C) hydroxyapatite used to treat arthritis D) cells for the LAL test used to detect bacterial contamination of surgical tools E) Prialt, a peptide used as a pain reliever
Under what environmental conditions do yeast carry out fermentation?
A. high osmotic pressure B. low pH C. high temperature D. absence of oxygen E. All of the choices are correct.
Which ONE of the following is NOT part of the pre-embryo?
A. Maternal Determinants. B. Cords of trophoblastic cells. C. Pronucleus. D. Blastomere. E. Human Chorionic Gonadotropin.