There are ________ different olfactory receptor proteins in humans that allow us to sense a variety of odors
A) 5 to 10
B) 350 to 400
C) 10 to 15
D) 100,000 to 500,000
E) 1,000 to 1,500
B
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If you have a double stranded synthetic piece of DNA that you want to attach to a PCR product, which enzyme would be used to join together two molecules.
A. DNA polymerase. B. Reverse transcriptase. C. Restriction enzyme. D. Taq DNA polymerase. E. DNA ligase.
Archaeons power their flagella by proton motive force (PMF), whereas bacteria empower their flagella by ATP hydrolysis.
Answer the following statement true (T) or false (F)
Scientific knowledge is limited to physical explanations for observable events in the natural world
a. true b. false
Individuals with diabetes mellitus are at greatest risk of dying from _______.
A. kidney disease B. neurological problems C. impotence D. cardiovascular disease