What type of response is most associated with the brain sensing a cold environment?
a. Decrease in blood flow to the skin
b. Heart rate decreasing.
c. Increased respiration.
d. Sweat glands increase their output.
e. Increase in blood flow to the skin.
a
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A species that three sets of homologous chromosomes can have __ different combinations of chromosomes in its gametes?
A. 3 B. 6 C. 8 D. 27 E. 64
If an organism has the same life strategy as a maple tree, the synaptonemal complex will be observed ____
a. only in alternating generations b. in each generation c. only in a unicellular haploid phase d. only in a multicellular haploid phase e. only in gametophytes
Of the following. the two that are most likely examples of endogenous infections are _____ and ______
a. and HIV infection from unprotected sex b. a measles infection from contact with a contagious individual c. a Staphyococcus infection from consuming contaminated food d. a Micrococcus infection resulting from a cut to the skin e. a Staphylococcus infection of a hair follicle
Conditional knock-out organisms provide which advantage over full knock-out organisms?
A) They allow scientists to study genome size. B) They allow scientists to turn the gene off at any time during the organism's development. C) They allow scientists to turn on the gene at any time during the organism's development. D) They allow scientists to render the organism unconscious at any time.