Skeletal muscle cells are ________ .
a . multinucleated
b. cylindrical and short
c. anucleated
d. unable to contract on their own
e. found in the walls of internal organs
Answer: a . multinucleated
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Which of the following best describes the composition of the bacterial translation initiation complex?
A. 30S and 50S subunits, mRNA start codon paired with the anticodon of fMet-tRNAfMet, fMet-tRNAfMet bound in the P site, A site is open, GTP is bound by IF-2 B. 30S and 50S subunits, mRNA start codon paired with the anticodon of fMet-tRNAfMet, fMet-tRNAfMet bound in the P site, A site is open C. 30S and 50S subunits, mRNA start codon paired with the anticodon of fMet-tRNAfMet, fMet-tRNAfMet bound in the A site, P site is open D. 30S and 50S subunits, mRNA start codon paired with the anticodon of fMet-tRNAfMet, fMet-tRNAfMet bound in the A site, P site is open, GTP is bound by IF-2
In scanning electron microscopy, an electron beam passes through a very thin slice of a specimen and then falls onto a
photographic plate or a fluorescent screen. Indicate whether the statement is true or false.
When cells are in an isotonic solution, they _______ water
Fill in the blank(s) with the appropriate word(s).
Animal viruses can be grown in all of the following except
A) live animal hosts. B) E. coli cells. C) embryonated eggs. D) tissue culture. E) HeLa cells.