-cell grows and becomes committed to divide. -Chromosomes are replicated. -cell makes protein for chromosome sorting and cell division. -cell divides into two daughter cells.
What will be an ideal response?
G1
S
G2
M
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Which property of water causes sugar to dissolve in coffee?
a. Hydrogen bonds are broken between neighboring water molecules. b. Water is less dense than ice. c. Water is a good solvent. d. Water is cohesive. e. Water is able to change states.
The feature of "sticky ends" that makes them especially useful in DNA recombination is their ability to
A) bind to DNA and thereby activate transcription. B) bind to ribosomes and thereby activate translation. C) form hydrogen-bonded base pairs with complementary single-stranded stretches of DNA. D) allow plasmids to attach to the main bacterial chromosome.
Proteins function in modern cells as
A. structural elements. B. hereditary information. C. catalysts. D. both catalysts and structural elements.
The biceps brachii is responsible for flexing the forearm while the triceps brachii extends the forearm. Muscles with such opposite actions are called
a. cooperative. b. antagonistic. c. involuntary. d. sensory.