The main symptoms of lactose intolerance are
A. dehydration and itching.
B. diarrhea and bloating.
C. internal bleeding and headaches.
D. shortness of breath and bloating.
E. diarrhea and itching.
Answer: B
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What is the function of NADH and FADH2?
a. Both release energy for glycolysis to proceed forward. b. Both provide electrons to the electron transfer system. c. Both produce ATP by substrate-level phosphorylation. d. NADH delivers electrons, while FADH2 supplies H+. e. NADH is found only in the cytosol and FADH2 only in the matrix.
A cloning vector often used to introduce a foreign gene into a bacterium is a(n) ________
a. DNA chip b. plasmid c. operon d. transgenic organism
Cas9 endonuclease differs from a restriction enzyme in that ________.
A. restriction enzymes recognize a 4-8bp target sequence in the DNA and directly cleave at that site, whereas Cas9 contains a guide RNA that is complementary to a specific DNA site and a polypeptide that cleaves once hybridization is complete B. restriction enzymes recognize 4-8bp sequence of the DNA, whereas the amino acids in Cas9 recognizes sequences that are approximately 20bp in length C. Cas9 recognizes a 4-8bp target sequence in the DNA and directly cleave at that site, whereas restriction enzymes contain a guide RNA that is complementary to a specific DNA site and a polypeptide that cleaves once hybridization is complete D. restriction enzymes can cleave any loci in the DNA molecule, whereas Cas9 can only cleave DNA fragments that originated as mobile genetic elements such as phages and transposons
Whereas _______ reactions are spontaneous and release energy, _______ reactions require an input of energy in order to occur.
Fill in the blank(s) with the appropriate word(s).