Suppose that the first part of a new polypeptide chain being produced in a eukaryotic cell has a signal peptide. Where would this polypeptide be located within the cell as it is maturing?

a. first in the rough ER, and then in the Golgi apparatus
b. first in the cytoplasm, and then in the rough ER
c. in the cytoplasm only
d. in the Golgi apparatus only


Ans: b. first in the cytoplasm, and then in the rough ER

Biology & Microbiology

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Which reaction is most likely to have more products than reactants when it reaches equilibrium?

a. DG = -25 kcal/mol

b. DG = -50 kcal/mol c. DG = -75 kcal/mol d. DG = -100 kcal/mol e. They will all have the same ratio of products to reactants regardless of the DG value.

Biology & Microbiology

Which species is overexploited rather than invasive?

A. zebra mussels in the Great Lakes B. brown tree snakes in Guam C. bison in the North American plains D. marine toads in Florida E. gypsy moth caterpillars in North America

Biology & Microbiology

Replication typically occurs at a single origin(s) of replication in eukaryotic chromosomes. Indicate whether the statement is true or false

Biology & Microbiology

In 1880, Walther Flemming identified ________, threadlike bodies seen in dividing cells.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology