xxwoolyknightxx

27.09.2019 • 

Biology

Mark as !
answer correctly this is a actual test and im being timed.

q1 - people who have leukemia, a cancer that affects white blood cells, are often given cytarabine. this drug inhibits the synthesis of dna. which phase of the cell cycle is most affected by cytarabine?

a. g1 phase
b. s phase
c. m phase
d. g2 phase

q2 - a type of fermentation which results from strenuous exercise when cells use up all their oxygen is called _.

a. carbon dioxide
b. glucose
c. lactic acid fermentation
d. alcoholic fermentation

q3 - energy is released from atp when?

a. adenine bonds to ribose
b. a phosphate group is removed from atp
c. atp is exposed to light
d. a phosphate group is added

q4 - what happens in the first stage of photosynthesis?

a. light-dependent reactions occur in the chloroplasts
b. mitochronia breaks down glucose and releases energy
c. cytoplasm breaks down glucose and releases energy
d. light-independent reactions occur to build glucose

q5 - chemical formula: c6h12o6 + 6 o2 → 6 co2 + 6 h2o + energy (34-36 atp + heat)

a. photosynthesis chemical formula
b. cytokinesis
c. cellular respiration chemical formula

Ответ:

Seikoz9907

22.01.2021

Biology

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If you place an animal or a plant cell in a hypertonic solution, the cell shrinks because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ). A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst.

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