If a cell has accumulated DNA damage, it is unlikely to _____
A) pass the G2 checkpoint
B) activate DNA repair mechanisms
C) enter G1 from mitosis
D) synthesize cyclin-dependent kinases
Answer: A
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The most common form of eye cancer is ____
a. conjunctivitis b. malignant melanoma c. retinoblastoma d. macular degeneration e. glaucoma
Which evolutionary adaptation is found in a typical desert plant?
A) shallow roots to quickly capture water B) broad leaves to capture the bright sunlight C) long-blooming flowers to attract pollinators D) deep roots to capture all available moisture
Which of the following is one of the body's first lines of defense against infection?
A) antibodies B) obstacles such as skin and mucous membranes C) increased production of certain hormones D) decreased heart rate
In the intestinal bacteria Escherichia coli, the DNA segment that contains the coding for the enzymes of lactose metabolism is called the lactose ________
Fill in the blank(s) with correct word