Many viruses released into the air survive for only short periods of time. Which of the following is the most likely reason for this? A. Viruses attract antibodies in the atmosphere. B. Viruses require a low atmospheric pressure. C. Viruses are hosts for bacteria that eventually destroy them. D. Viruses are dependent on host cells of living organisms.
LetaScutt Biology 1 0
An RNA sequence is shown below. AUGCCGAAACGU Which of the following statements describes how the RNA sequence specifies the production of an amino acid chain? (1 point) A. Each individual RNA base codes for a single amino acid. B. Each group of three RNA bases codes for a single amino acid. C. Each group of three RNA bases codes for an enzyme that helps join amino acids together. D. Each individual RNA base codes for the ribosome location where amino acids are assemembled
LetaScutt Biology 1 1
Many ranchers prefer cattle without horns. The presence or absence of horns is genetically determined. The allele for the absence of horns (A) is dominant to the allele for the presence of horns (a). A male with horns is mated with a heterozygous female without horns. What percentage of the offspring would be expected to have horns? (1 point) A. 25% B. 50% C. 75% D. 100%
LetaScutt Biology 2 0