Translocation in sieve tubes requires active transport

Indicate whether the statement is true or false.


ANS: F, is passive

Biology & Microbiology

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The process by which electrons from the quinone pool are forced against the thermodynamic gradient to reduce NAD+ to NADH is called reverse

A) proton motive force. B) reduction. C) electron transport. D) energy flow.

Biology & Microbiology

Okazaki are found on the ____ strand of DNA

Fill in the blank with the appropriate word.

Biology & Microbiology

Which of the following is currently used by the U.S. Department of Justice as a form of genetic "fingerprints" of criminals?

A) PCRs B) The genes responsible for producing the unique patterns of swirls and loops on a person's fingers C) STRs D) Plasmids E) The number of introns in a chromosome

Biology & Microbiology

Which statement best describes the role of the E. coli RNA polymerase sigma factor?

a. Sigma factor allows assembly of RNA polymerase. b. Sigma factor is responsible for catalyzing the formation of phosphodiester bonds during RNA polymerization. c. Sigma factor shuttles cytoplasmic RNA polymerase to promoter sequences. d. Sigma factor increases the affinity of RNA polymerase for promoter sequences. e. Sigma factor actively removes core enzyme from DNA and attaches it to a promoter.

Biology & Microbiology