Answer the following questions true (T) or false (F)
1. Peroxisomes contain enzymes used to digest nutrients that have been brought into the cell through phagocytosis.
2. Bacterial protein synthesis can begin before the reading of the gene is complete.
3. Archaea are similar to bacteria in having cytoplasmic membrane that are composed of phospholipids and hopanoids.
1. FALSE
2. TRUE
3. FALSE
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Indicate whether each statement is true or false and then provide the explanation for why the statements are either true or false. Receptors for signaling molecules are always integral membrane proteins on the surface of responding cells
What will be an ideal response?
Which of the following molecules is involved with assisted assembly?
A) water molecules B) helper proteins C) molecular chaperones D) tobacco mosaic viruses E) none of the above
Dark spot(s) in the nucleus where ribosomes are made would be the _________.
Fill in the blank(s) with the appropriate word(s).
The DNA helicase animation shows the bacteriophage T7 helicase unwinding DNA. Which of the following are critical components of the helicase mechanism of action necessary to unwind DNA?
A. ATP binding and hydrolysis B. binding of four helicase subunits to the double-stranded DNA C. dissociation of the helicase subunits D. conformational changes of subunits E. oscillating loops pulling the single-stranded DNA through a central hole