The LEAST hydrophilic substance is
A. salt.
B. an ion.
C. oil.
D. an amphipathic molecule.
E. a gas.
C. oil.
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Listeria monocytogenes is a species of rod-shaped bacteria. How would L. monocytogenes be affected if its actin-like cytoskeletal proteins were no longer functional?
A. It will be less efficient at exchanging materials with its environment. B. It will be able to store more nutrients. C. It will be able to secrete mucilage and aggregate as part of a biofilm. D. It will no longer be able to undergo binary fission for reproduction. E. It will become a spirochaete.
Four of the five structures listed below produce
components of semen. Select the exception. a. epididymis b. prostate c. seminal vesicle d. bulbourethral gland e. testes
The "cuddle hormone," secreted in greater quantities following sexual contact, is
a. testosterone. b. estrogen. c. follicle stimulating hormone. d. melatonin. e. oxytocin.
In stratified epithelium, such as the epidermis of the skin, cell division occurs
A) in the cells at the base layer only. B) in the surface cell layer only. C) throughout all the layers. D) in the basement membrane only.