Paired homologous chromosomes are found at the center of the cell during _____ of meiosis
a. metaphase I
b. telophase I
c. prophase II
d. metaphase II
e. anaphase II
ANSWER: a
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Small molecules that bind directly to mRNAs and effect transcription or translation are binding to regions of the mRNA known as
A) Shine-Delgarno sequences. B) the operator region. C) riboswitches. D) ribozymes. E) allosteric sites.
In prokaryotes, photosynthesis occurs in the ____
a. ribosomes b. nucleoid c. chloroplasts
d. mitochondria e. plasma membrane
A record of the electrical impulses characteristic of the cardiac conduction system is known as a(n) ________
Fill in the blank(s) with correct word
Cells found in plants and animals have similarities but can differ in function. Consider the following two organisms: a corn plant cell (Zea mays) and a camel cell (Bactrianus ferus). What is the best explanation for the difference in the cellular vacuole size between these two biotic organisms?
A. The corn cells' have a small vacuole size because it does not need long term water and electrolyte storage. B. The camel cells' have a small vacuole size because it does not need long term water and electrolyte storage. C. The camel cells' have a small vacuole size because it is not in contact with toxins that need to be removed from the cell. D. The corn cells' have a large vacuole size because it is in contact with many toxins in the soil which need to be removed from the cell.