During embryonic development, the proembryo develops from the basal cell. Indicate whether the statement is true or false
False - apical
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If 16% of the nucleotides in one strand of a DNA molecule contain the base G, what percent of the nucleotides on the complementary strand will also contain the base G?
A. 8% B. 34% C. 16% D. 32% E. It is impossible to determine from the information given.
Which of these methods can identify bacteria in a sample without culturing the bacteria?
a. flow cytometry b. biochemical testing c. fluorescent in situ hybridization (FISH) d. phage typing e. flow cytometry and fluorescent in situ hybridization (FISH)
A soft drink manufacturer, notorious for making marketing claims that are deceptive but technically accurate, has released a new sports beverage. The advertisements for this beverage assert that it contains anabolic molecules that provide energy and is 100% legal to produce and consume. You buy a bottle of this beverage for testing and discover that it contains little more than water, disaccharides such as sucrose and maltose, citric acid, and other fairly common fruit flavoring agents. Have you finally caught the company in a lie?
a. Yes! This beverage does not contain any anabolic ingredients despite these claims. b. Yes! Anabolic steroids are illegal in the United States regardless of how they are consumed. c. No; disaccharides are created through anabolic pathways and are perfectly legal. d. No; anabolic molecules denature in the presence of citric acid, becoming legally inert.
The cytoskeleton
a. extends between the nucleus and the plasma membrane. b. is found within the nucleus. c. is associated with only certain cell structures. d. is found within organelles. e. is found in all animal cells but not in cells with cell walls.