All eukaryotic cells have a plasma membrane composed of a phospholipid bilayer
Indicate whether the statement is true or false
TRUE
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Microbial cells first evolved on Earth approximately ________ billion years ago
A) 1.6 to 1.8 B) 3.8 to 3.9 C) 5.4 to 5.6 D) 7.0 to 7.2
Ecosystems typically support which two types of food webs?
a. decomposing and detrital b. producing and detrital c. grazing and detrital d. producer and consumer e. grazing and hunting
Which of the following is a true statement regarding lysogeny?
A. It halts the viral life cycle because the phage genes are no longer replicated. B. The host bacterial cell is lysed once the phage genome is integrated. C. The host bacterial cell acquires new characteristics that are often detrimental to humans. D. Once the phage genome is integrated into the host cell, it remains there permanently.
In humans, urea and uric acid are produced by the kidneys. Indicate whether the statement is true or false