The respiratory advantage provided by a four-chambered heart over a three-chambered heart in vertebrates is

What will be an ideal response?


separation of oxygen-rich blood and oxygen-poor blood.

Biology & Microbiology

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Determining the best-fit line for a data set by utilizing the least-squares linear regression, the slope of the resulting line represents a useful estimate known as the ________, [two words] for which we use the symbol h2

Fill in the blank(s) with correct word

Biology & Microbiology

Dehydration in animals __________.

a. is always lethal b. that are exceptionally small, such as the tardigrade, is not usually fatal because of their large surface area-to-volume ratio c. is, on a cellular level, the opposite of freezing d. is a problem because fluid-mosaic cell membranes fall apart when deprived of water e. may be less damaging in the presence of sugar

Biology & Microbiology

Plants can most readily utilize the ________ form of nitrogen

A) nitrous oxide B) N2 C) amino D) nitrate

Biology & Microbiology

Artemia and Fast Plantâ„¢ bioassays can be used to identify

(a) cytotoxins. (b) herbicides. (c) plant growth stimulators. (d) all of the above.

Biology & Microbiology