The primary purpose of homeostasis is to:
a. accept responses to stimuli
b. provide unlimited growth within an organism
c. allow unrestricted movement of an organism
d. convert an organism to live in a harmful environment
e. maintain a constant internal environment
e
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Some animals, like humans, have two eyes on the front of the head that perceive a mostly overlapping visual field. In
contrast, some herbivores (rabbits, for example) have eyes on the sides of their head and visual fields that may not overlap at all. How does this impact perception of the environment?
a. Humans have better depth perception and a wider field of vision than rabbits. b. Humans have poorer depth perception and a narrower field of vision than rabbits. c. Humans have better depth perception and a narrower field of vision than rabbits. d. Humans have poorer depth perception and a wider field of vision than rabbits. e. Due to integration by the brain, there is really no difference in depth perception or visual field size when comparing humans to rabbits.
An E. coli strain contains a mutation in the malate dehydrogenase gene that results in a stop codon at amino acid position 14
From subcultures of this strain, a colony was obtained that was capable of making malate dehydrogenase. Your approach to examining this phenomenon should be to examine A) the DNA sequence to see if a reversion has occurred. B) the DNA sequence to see if a suppressor mutation has occurred. C) other proteins to see if other stop codons are ignored, indicating the presence of a suppressor tRNA. D) the DNA and plasmids for the incorporation of a second complete copy of the malate dehydrogenase gene. E) All of these approaches need to be considered.
Which type of habitat lifestyle did the first fungi probably have?
a. aquatic b. arboreal c. amphibious d. airborne
The inflammatory process includes redness, heat, pain, loss of function, and:
a. swelling b. pus drainage c. scarring d. scabbing