How does an "activated" receptor transfer information into the cell?
A. by altering its ligand-binding site
B. through a conformational change
C. by decreased phosphorylation
D. by increased translation
B
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A segment of a protein has the amino acid sequence Ser—Gly—Leu. Is it possible to infer the sequence of the RNA that encodes this amino acid sequence?
A) Yes, the sequence is UCU—GGA—CUC.
B) Yes, the sequence is TCT—GGA—CTC.
C) No; more than one type of RNA (more than one base sequence) could encode this amino acid sequence.
D) No; the sequence of bases in RNA is not related to the amino acid sequence.
All gametes contain
a. two chromosomes. b. two identical sets of chromosomes. c. two different sets of chromosomes. d. one chromosome. e. one set of chromosomes.
The probability that an individual who inherits an allele will have the phenotype associated with it is known as ____
a. pleiotropy b. genomic imprinting c. codominance d. penetrance e. linkage
Select the hydrogen acceptor molecule that stores electrons in the process of photosynthesis:a
nicotinamide adenine dinucleotide (NAD+) b. nicotinamide adenine dinucleotide phosphate (NADP+) c. flavin adenine dinucleotide (FAD) d. adenine triphosphate (ATP) e. adenine diphosphate (ADP)