When spread out and viewed with electron microscopy, an active rRNA gene looks like a

a. Star of David.
b. Christmas tree.
c. reindeer.
d. Santa Claus.


Ans: b. Christmas tree.

Biology & Microbiology

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The collars on the cells of choanoflagellates have the function of:

A. protecting the flagellum B. filtering bacterial food from the water C. directing currents away from the flagellum D. storing waste materials of the cell E. attaching to the substrate

Biology & Microbiology

Why are women given hormones prior to obtaining eggs for IVF?

a. to protect eggs from damage b. to protect the eggs from mutating c. to prevent premature maturation of the eggs d. to prepare the uterus for eggs e. to cause multiple eggs to mature at once

Biology & Microbiology

The chromatids detach from one another and

become visibly separate chromosomes during a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.

Biology & Microbiology

What large molecules are essential in determining the structure and function of cells and tissues?

a. RNA b. genes c. proteins d. hormones e. nucleotides

Biology & Microbiology