Metanephridial organs are common in:
a. mollusks.
b. flatworms.
c. cnidarians.
d. sponges.
e. insects
a
Biology & Microbiology
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In a frog in which the diploid number of chromosomes per cell is 24, what is the total number of
chromatids present during Prophase I?
a. 0 b. 6 c. 12 d. 24 e. 48
Biology & Microbiology
Until which period of time did scientists think that molecules of life could only be produced by living entities?
A) early 1500s B) late 1500s C) early 1600s D) late 1600s E) early 1800s
Biology & Microbiology
After one round of division (Meiosis I) are the cells HAPLOID or DIPLOID?
A. They are haploid
B. They are diploid
C. One is haploid and one is diploid
D. They are triploid
Biology & Microbiology
A cell's ability to control its level of gene expression is called
A. gene splicing. B. gene transformation. C. gene addition. D. gene regulation. E. gene correction.
Biology & Microbiology