The binding of active CAP to the lac operon promoter decreases the rate of transcription of the lac operon
__________________ Indicate whether the statement is true or false.
False - increases
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Explain our present understanding of molecular adaptations to the cytoplasmic membrane that are present in psychrophiles
What will be an ideal response?
Which of the following statements about cholesterol is true?
a. If the blood contains too much HDL, cholesterol may be deposited on the arterial wall. b. LDLs transport cholesterol from cells to the liver when cholesterol levels are high. c. In order for LDLs to be taken up by cells, they must bind with an LDL receptor on the cell membrane. d. Most plasma cholesterol is transported on HDLs or high-density lipoproteins. e. Omega-3 fatty acids are thought to decrease HDL levels
What is contained within the xylem sap of a plant?
A) water only B) water and dissolved minerals only C) water and sugars produced from photosynthesis only D) water, dissolved minerals, and sugars
The approach to estimating phylogenetic trees is most like the approach of which species concept?
A) morphological species concept B) biological species concept C) phylogenetic species concept