Electrons move about the nucleus of an atom in the same way that
A) insects fly around a bright lamp at night.
B) cars are parked along the sides of a street.
C) boats cross a lake.
D) birds migrate to a new winter home.
Answer: A
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Based on a variety of experiments, it is known that the rate of photosynthesis is highest when wavelengths of light between 400 and 500 nm are used, and when wavelengths around 700 nm are used. What does this indicate about the relative importance of chlorophyll a and b in photosynthesis?
A. Reflection of light by chlorophyll a and b is essential for the process of photosynthesis
B. Absorption of light by chlorophyll a and b is essential for the process of photosynthesis
C. Transmission of light by chlorophyll a and b is essential for the process of photosynthesis
D. Chlorophyll a and b are much less important than other pigments in the reflection, absorption and transmission of light relevant to photosynthesis
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about the role of pigments during photosynthesis? What other information is related to the question?
Choose Answer
Do you have all the information needed to analyze the graph and answer the question?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The brain knows how strong a stimulus is because the brain interprets ____
a. the neurotransmitter levels the stimulus is producing b. variations in the frequency of action potentials c. the size variation in the action potential being propagated d. the number of ion channels in the plasma membrane of the sensory neuron e. the extent to which voltage gated ion channels open and close
Which structure is most likely to become lodged with a kidney stone?
a. Efferent artertiole b. Collecting tubule c. Loop of Henle d. Ureter e. Glomerulus
The single greatest threat to biodiversity comes from ________
A) habitat destruction and fragmentation B) invasive species C) overexploitation D) pollution