Among prokaryotes, there are some that can live in every environment on earth.
a. true
b. false
Ans: a. true
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A thyroid disorder in which an excess of thyroid hormone is produced, causing anxiety, insomnia, heat intolerance,
weight loss, and tremors is known as ____. a. hypothyroidism b. goiters c. cretinism d. Graves' disease e. Hashimoto’s disease
An exonuclease is an enzyme that can
A. remove a terminal nucleotide in a polynucleotide chain. B. connect two fragments of DNA together. C. cut DNA at a site?specific sequence. D. catalyze DNA synthesis. E. produce an RNA primer for DNA synthesis.
Researchers have been able to study the pathway of a secreted protein by "tagging" it with a fluorescent marker. Using this method, you would observe fluorescence moving from the ER to which organelle?
A) Plasma membrane B) Lysosome C) Nuclear membrane D) Mitochondria E) Golgi apparatus
Which of the following is a sign of disease?
A) headache B) dizziness C) fever D) nausea E) cramps