How does an action potential enter a skeletal muscle cell?
A) As a result of the interaction between actin and myosin
B) Through a T tubule
C) By diffusion
D) In response to the release of calcium ions
B
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Bacterial and archaeal ribosomes are known as ________ ribosomes, based on their sedimentation coefficient.
A. 50S B. 30S C. 70S D. 80S
Which of the following is NOT promoted by the
active form of phytochrome? a. seed germination b. root growth c. leaf expansion d. stem branching e. none of these
A nutrition facts label from a fortified cereal states that in a single serving of cereal there is 8% of the percent daily value of the element phosphorous. The label also says that a single serving of cereal plus one-half cup of skim milk has 20% of the
percent daily value of phosphorus. Which of the following statements is false? A) A half-cup of skim milk contains 12% of the percent daily value of phosphorus. B) A half-cup of skim milk contains twice as much phosphorus as a serving of cereal. C) Eating five servings of cereal and two and a half cups of skim milk will give you 100% of the phosphorus that you need for one day. D) The amount of phosphorus in six servings of cereal is equal to the amount of phosphorus in two cups of skim milk.
Portion of photosynthesis that takes place in the stroma of chloroplasts and can occur in the dark; it uses the products of the light reactions to reduce CO2 to a carbohydrate.
What will be an ideal response?