What are steroids?
What will be an ideal response?
Ans: a family of carbon compounds that have multiple linked rings
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Because it has no aquaporins, water is generally trapped in the ____ in mammals
a. distal convoluted tubule b. Bowman's capsule c. descending segment of the loop of Henle d. proximal convoluted tubule e. ascending segment of the loop of Henle
Most of earth's fresh water is _____
a. in lakes and streams c. frozen as ice b. in aquifers and soil d. in bodies of organisms.
Why does sexual reproduction produce more genetic variability in a population than asexual reproduction?
A. Sexually reproducing organisms mutate more rapidly during DNA replication than asexually reproducing organisms. B. Sexually reproducing organisms mix parental genetics in addition to crossing-over and random alignment. C. Organisms arising from sexual reproduction can change their genetic material in response to environmental changes. D. In sexual reproduction, the parents exchange genetic material of the nuclei, thus increasing their variability. E. Offspring are identical to one parent, when produced through sexual reproduction.
When two alleles of the same gene are identical, the individual carrying those alleles is said to be ____
a. dominant b. heterozygous c. recessive d. genotypical
e. homozygous