The amphibian heart has
Select one:
a. two separate atria and two separate ventricles that partition oxygen-rich and oxygen-poor blood.
b. two separate atria and one shared ventricle that allow oxygen-rich and oxygen-poor blood to mix.
c. two separate ventricles and one shared atrium that allow oxygen-rich and oxygen-poor blood to mix.
d. one atrium and one ventricle similar to the fish.
e. one atrium and one ventricle but reroutes the blood through the heart after passing through the gills.
b. two separate atria and one shared ventricle that allow oxygen-rich and oxygen-poor blood to mix.
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A patient suffers from a disease that slows fatty acid synthesis. What is a likely impact of this disease on nervous system function?
A. improved functioning due to a healthier weight B. insufficient myelination and slow axon conduction rate C. improved functioning due to better blood flow D. weaker action potentials with smaller depolarization Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about fatty acids? What other information is related to 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?
Streptomyces are aerobic soil bacteria that produce over two-thirds of our antibiotics. Why might a bacterium produce antibiotics?
A. to kill competing bacteria of the same species B. to protect itself from a host immune system C. to kill viruses that may try to infect it D. to allow it to break down the cell walls of plants E. to kill competing bacteria of different species
The accompanying figure is of one of the most poisonous mushrooms. Four of the following statements about this fungus are true. Which is the exception?
a. Its spores are created by mitosis. b. It is called the death cap. c. It is often mistaken for a puffball. d. It kills by causing liver and kidney failure. e. It is a club fungus.
Which of the following is an example of a tissue?
A) heart muscle B) heart C) red blood cell D) circulatory system