You have discovered a previously unidentified plant, and you cultivate it in your lab. You notice that its flowers close when people are talking, yet are open when the lab is relatively quiet
You suspect that this plant may have the ability to hear! Which of the following hypotheses is (are) the most reasonable to explain this phenomenon? I) There is a cell-surface protein on the epidermal cells that becomes phosphorylated in response to vibration by sound waves. II) There are tiny hairs on epidermal cells that bend in response to the vibration of sound waves, triggering an action potential in epidermal cells. III) There is a cell-surface receptor on root cells that becomes phosphorylated when the soil vibrates in response to sound waves. A) only I
B) only II
C) only III
D) I, II, and III
D
You might also like to view...
Which of the following is not a component of a yeast three-hybrid analysis?
A. a fusion protein of LexA, which binds the reporter construct, and MS2, which specifically binds an RNA tag that has been added to every RNA produced by the plasmid library B. a plasmid library that contains random sequences from the genome tagged with a unique hairpin sequence that MS2 will bind C. a reporter construct that contains a LexA operator (binding site) and a reporter gene; activation of the reporter gene is either required for growth of the bacteria or catalyzes a reaction that forms a colored product D. a fusion protein containing the protein of interest fused to the activation domain that will activate transcription of the reporter gene when bound E. a fusion protein of the protein of interest and two tags?the calmodulin binding site and protein A
The number of chromosomes in diploid eukaryotic cells
A. is 46. B. changes as each organism grows and ages. C. can be predicted by the size of the organism. D. varies considerably from 2 to over 1000 in different species.
In the context of molecular genetics, reverse transcription PCR (RT-PCR) refers to ________
A) assembling a DNA sequence from an mRNA B) transcribing first, then translating C) translating in the 3' to 5' direction D) assembling an RNA sequence from a DNA sequence E) making an amino acid sequence from a DNA sequence
To make all subjects think they are receiving the same treatment, patients in the control group can receive a placebo.
Answer the following statement true (T) or false (F)