Chloroplasts contain disklike membranous sacs arranged in stacks called
A) stroma.
B) grana.
C) thylakoids.
D) vacuoles.
E) cristae.
Answer: B) grana.
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While we can use molecular clocks based on molecular sequence data to estimate the times at which various lineages diverged, we ultimately need the ____ to calibrate the clocks
Fill in the blank with the appropriate word.
A cell with an F factor integrated into the bacterial chromosome is called __________
A. Hfr B. F+ C. Conjugative plasmid
Once retroviral DNA is incorporated into the host genome, what happens to the newly transcribed RNA?
a. The RNA is translated into host proteins. b. The RNA is translated into viral proteins. c. The RNA serves as genetic material for new viruses. d. The RNA is reverse transcribed into double-stranded DNA. e. Some is translated into viral proteins and some serves as genetic material for new viruses.
Which of the following is associated with a reduced risk of cardiovascular disease?
A) high levels of HDL B) high levels of LDL C) high consumption of trans fats D) high consumption of dietary cholesterol