Who was the first person acknowledged to have seen living, moving cells by using a microscope?
a. Robert Hooke
b. Robert Brown
c. Galileo Galilee
d. Rudolf Virchow
e. Anton van Leeuwenhoek
ANSWER: e
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Which of the following is nota mechanism for regulating gene expression after the mature RNA transcript is produced?
A. gene silencing by miRNAs B. inhibition of translation initiation C. blockage of the promoter by a repressor protein D. protein degradation
The tough outer covering of the eye is referred to as the
A. pupil. B. retina. C. sclera. D. fovea. E. iris.
Some genes encoding proteins that are essential to
the survival of the organism are called highly conserved sequences. Which of the following is an example of one of these proteins? a. cytochrome b b. muscle structural proteins c. carbohydrate hydrolyzing genes d. skin pigmentation e. keratin
In the vicinity of the equator, air warmed by solar radiation rises
Indicate whether the statement is true or false