Chlorophyll does not absorb ____ wavelengths of light
a. red
b. yellow
c. orange
d. green
e. blue
ANSWER: d
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Which of the following best describes the translational elongation process?
A. tRNA molecules condense with rRNA molecules. B. Ribonucleotides are added to amino acids through the synthesis of phosphodiester bonds. C. The polypeptide chain is lengthened by synthesizing peptide bonds between amino acids. D. Ribosomal proteins aggregate to form polysomes.
Marfan syndrome can be caused by mutations in either of two genes involved in the disorder, but mutations in one of the genes blocks activity of the other. This means that Marfan syndrome demonstrates
A) variable expressivity and complete penetrance. B) an acquired phenotype. C) late onset and early onset. D) genetic heterogeneity and epistasis.
Refer to Figure 38-2. The photoperiodic response of the plant in row a suggests:
a. a brief dark period is the light cue that induces flowering.
b. a brief daylight period is the light cue that induces flowering.
c. a long uninterrupted daylight period is the light cue that induces flowering.
d. a long uninterrupted dark period is the light cue that induces flowering.
e. Cannot be determined from the data provided.
CAM plants open their stomata at night, admitting CO2 while minimizing water loss. Indicate whether the statement is true or false