Eukaryotic cells manufacture cytoskeletal proteins, which help to maintain cell shapes and functions. What would you predict about these proteins?
A) They initially contain signal sequences that allow their entrance into the endoplasmic reticulum.
B) They are manufactured on free ribosomes in the cytoplasm.
C) They are glycosylated in the Golgi apparatus.
D) They travel to the nucleus in a transport vesicle with a specific signal.
Answer: B
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Four of the following statements are typically true of placoderms. Which one is the exception?
a. They gave birth to live young. b. They had jaws. c. They had teeth.
d. They had paired pelvic fins. e. They had paired pectoral fins.
Populations of endotherms that live in colder climates tend to have shorter ears and limbs than populations of the same species in warm climates. This is called ____________ Rule.
A. Allen's B. the K-Selected C. the r-Selected D. Edward's
what is the etiology of botulism?
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What is a muscle that encircles a tube and controls the movement of food through the digestive tract is called?
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