What is true regarding sandy shores?
A) There are rich biota on the sand surface.
B) Tidal patterns exist.
C) Sea urchins live in this environment.
D) They are much cooler than ocean environments.
B
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Which of the following groups of microorganisms produces antibiotics?
A. Penicillium B. Streptomyces C. Bacillus D. Penicillium AND Streptomyces E. All of the choices are correct.
Which of the following best describes a chemoreceptor response to PO2?
A) Peripheral chemoreceptors respond to oxyhemoglobin. B) Central chemoreceptors respond to only large decreases in PO2. C) Peripheral chemoreceptors respond to small changes in PO2. D) Peripheral chemoreceptors respond only indirectly to PO2. E) Central chemoreceptors do not respond to changes in PO2.
The extraembryonic membrane closest to the embryo is the:a
amnion. b. archenteron. c. chorion. d. blastocyst. e. neural plate
In an organism's genome, autosomes are __________.
a. the chromosomes that differ between sexes b. chromosomes that are involved in sex determination c. only inherited from the mother (maternal inheritance) d. all of the chromosomes other than sex chromosomes