During cytokinesis, a cell undergoing cell division finally splits into two daughter cells. If False, change it.
a. true
b. false
Ans: a. true
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After transcription and before translation, eukaryotic mRNA is modified by adding
A) tRNAs and amino acids. B) amino acids and a poly-A tail. C) a cap of modified nucleotides and a poly-A tail. D) an AUG at one end and a poly-U tail at the other.
Chemical germicides
A. may react irreversibly with proteins/enzymes.
B. may react with cytoplasmic membranes or viral envelopes.
C. may be disinfecting or even sterilizing.
D. are sensitive to dilution factor, time of contact, and temperature of use.
E. All of the choices are true.
Your best friend sneaks up behind you and lightly strokes the back of your neck with a feather. Which of the following receptors would detect this type of stimulus?
A) Pacinian corpuscles B) Hair cells C) Meissner's corpuscles D) Ruffini corpuscles E) Stretch receptors
If a chromosome fragment breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called a(n)
A) deletion. B) inversion. C) translocation. D) reciprocal translocation.