Which of the following structures is NOT found in prokaryotic cells?
a. Flagellum
b. Axial filament
c. Cilium
d. Pilus
e. Peritrichous flagella
Ans: c. Cilium
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Hereditary nonpolyposis colon cancer (HNPCC) requires only one mutational step to initiate the formation of a cancer cell
a. True b. False Indicate whether the statement is true or false
How does systemin cause the activation of the wound response in tomato plants?
A. It binds directly to jasmonic acid. B. It directly signals gene expression. C. It induces the production of tannins. D. It induces a jasmonic acid signaling pathway in certain cells. E. It triggers genes that are able to signal the plant that mechanical injury has occurred.
Transformation in bacteria results from the uptake of which molecule?
A) RNA B) DNA C) lipid D) protein E) polysaccharide
The process by which cells break down organic macromolecules into their subunits is ________
Fill in the blank(s) with correct word