Following with of these time periods was there
NOT a mass extinction?
a. Ordovician
b. Devonian
c. Permian
d. Silurian
e. Triassic
D
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Which of the following endocrine organs and hormones are not paired correctly?
A. anterior pituitary gland: vasopressin B. posterior pituitary gland: oxytocin C. hypothalamus: releasing factors D. anterior pituitary gland: growth hormone E. posterior pituitary gland: antidiuretic hormone
Where does the Calvin cycle take place?
A) stroma of the chloroplast B) thylakoid membrane C) interior of the thylakoid (thylakoid space) D) outer membrane of the chloroplast
Which of the following processes within viral replication is the greatest source of genetic variation in RNA virus populations?
A) High mutation rate due to lack of proofreading of RNA genome replication errors. B) Transcription from the host cell RNA polymerase introduces numerous mutations. C) Capsid proteins from the host cell can replace the viral capsid. D) Viral RNA is translated by host cell ribosomes.
The nervous system develops from the endoderm
Indicate whether the statement is true or false