Which statement could be used as evidence to show that two different species of organisms most likely develop from a single, common ancestor?
a. They eat the same types of food
b. they have different digestive enzymes
c. they lived during the same time period
d. they contain similar amino acids
Ans: d. they contain similar amino acids
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If you had a garden full of a variety of plants, you might notice that the only pollinators of a
plant called trumpet vines are hummingbirds. Can you anticipate anything about the appearance of these flowers? What is the advantage of having a single pollinator for your plant species?
What will be an ideal response?The statement “animals that live in the desert will produce concentrated urine” is ____
a. an opinion b. a hypothesis c. data d. a variable e. a control group
What is the function of surfactant?
A) It increases alveolar expansion. B) It increases surface tension. C) It stimulates activity of the cilia lining the walls of the alveoli. D) It enhances contraction of the inspiratory muscles. E) It prevents the alveoli from sticking together and collapsing.
A heart ________ can be heard with a stethoscope and is an indication to a physician of disturbed blood flow due to a damaged heart valve
Fill in the blank(s) with correct word