All types of internal fertilization require
A. specialized anatomical structures.
B. physical joining of male and female.
C. transfer of a spermatophore to the female reproductive tract.
D. a terrestrial environment.
E. both a terrestrial environment and accessory sex organs.
A. specialized anatomical structures.
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A sequence of bases in the middle of an RNA used to encode a polypeptide has the sequence UUA—AUG—CGU. Is it possible to infer the sequence of the amino acids encoded by this RNA?
A) Yes, the sequence is Leu—Met—Arg.
B) Yes, the sequence is Asn—Tyr—Ala.
C) No, this RNA sequence could encode more than one amino acid sequence.
D) No; the sequence of amino acids in polypeptides is not related to the sequence of bases in RNA.
If a different scientist was comparing the soil nutrients in a region where Venus fly-traps live to soil components in other ecosystems, which type of ecology would that be?
a. population ecology b. community ecology c. ecosystem ecology d. organismal ecology
As part of a lab exam, you are given a vial of orange crystals. When you add them to pure, neutral pH water, the pH changes to 13. Other tests show that the crystals consist of a single chemical. You could conclude the chemical is
What will be an ideal response?
Which of the following characteristics of a fossil suggests that the species belonged to the hominin group?
A) prominent brow ridges B) small canine teeth and thicker tooth enamel C) a protruding lower face D) large canine teeth and thinner tooth enamel