If an organism obtains its CARBON from the ATMOSPHERE it could be classified as
a. heterotroph
b. phototroph
c. autotroph
d. chemotroph
Ans: c. autotroph
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Organisms categorized as osmoconformers are most likely _____
A) found in freshwater lakes and streams B) marine C) amphibious D) found in arid terrestrial environments E) found in terrestrial environments with adequate moisture
Which of the following enzymes is responsible for initiating certain types of base excision repair?
A. DNA polymerase B. DNA ligase C. AP endonuclease D. DNA uracil glycosylase E. None of the answer options is correct.
The expression of both alleles for a trait in a heterozygous individual illustrates
A) codominance. B) pleiotropy. C) polygenic inheritance.
Which of the following is false concerning fertilization?
A) The process can take hours to complete. B) Enzymes are released from the acrosome of the sperm to penetrate the egg. C) Most sperm die on their way to the egg. D) Several sperm must contribute their DNA to the egg.