Which of the following correctly explains what a heart attack is?
A. Veins that supply the heart with oxygen become blocked.
B. Arteries that supply the heart with oxygen become blocked.
C. Veins that supply the brain with oxygen become blocked.
D. Arteries that supply the brain with oxygen become blocked.
Answer: B
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The main structure for gas exchange in plants is called the
A. mesophyll. B. chloroplast. C. stomata. D. epidermis. E. root.
What is the length of an average rod-shaped bacterium (bacillus)?
A) 3 ?m B) 3 nm C) 0.3 mm D) 0.03 mm
Choose the evidence supporting the argument that a small number of changes in developmental regulatory genes can result in large phenotypic changes.(choose all that apply)
_____ Closely related animals can have very different patterns of development. _____ Most developmental genes are highly conserved. _____ Much of phenotypic variation is environmentally caused. _____ The developmental "toolkit" consists of a large number of genes. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about developmental regulatory genes? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? 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?
You turn on the shower and check the water temperature with your hand. Your brain is able to monitor increasing temperature because the thermosensitive neurons in your skin
A. integrate temperature information. B. transmit bigger action potentials to the brain as the water warms up. C. transmit action potentials to different brain regions as the water warms up. D. transmit action potentials at a greater rate when the water warms up. E. gradually adapt to the stimulus.