The most critical factor affecting the initiation of seed germination is:
a. increasing day length
b. oxygen availability
c. water absorption
d. warmth
e. enzymes break down stored starches
c
You might also like to view...
Based on the composition of the plasma membrane, how do you predict a protein with one section of hydrophobic amino acids and one section of hydrophilic amino acids would be situated in the membrane?
A) The hydrophobic portion of the protein could embed in the membrane, and the hydrophilic portion could extend into the cell. B) Both the hydrophobic and hydrophilic portions of the protein could embed in the membrane. C) This protein could not be found in the membrane. D) The hydrophilic portion of the protein could embed in the membrane, and the hydrophobic portion could extend into the cell.
A diploid cell only has two copies of most genes, but can make hundreds of copies of a protein from those genes per second because
A. the DNA can replicate during transcription, producing double-sided mRNA to accelerate the translation process. B. transcription can repeat and make multiple mRNA copies of genes, and multiple ribosomes can translate the same mRNA. C. multiple ribosomes can actively attach to the template DNA and conduct translation immediately after transcription. D. multiple copies of the same mRNA can be produced with multiple promoter sequences to simultaneously initiate multiple ribosomes. E. multiple codons can encode for the same amino acid, allowing different versions of the protein to be made.
Which of the following chemicals is used to induce polyploidy?
a. colchicine b. ethylene c. gibberellin d. cytokinin e. auxin
The lowest rate of error in the steps of protein synthesis is in
a. having the wrong aminoacyl-tRNA bind to the ribosome. b. having the aminoacyl-tRNA synthetase bind the wrong amino acid. c. skipping a base during translation. d. having the aminoacyl-tRNA synthetase bind the wrong tRNA. e. transcription of mRNA.