Sea stars (starfish) are bilaterally symmetrical at one time in their life cycle
Indicate whether the statement is true or false
TRUE
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If a shoot’s tip breaks off, its source of auxin disappears, so the __________ level rises in the stem. Fill in the blank(s) with the appropriate word(s)
Roan cattle are the heterozygous hybrids of a cross
between a white individual and a red individual. If a roan bull were crossed with a red cow, their offspring would show which of the following ratios? a. all roan b. 1 red: 2 roan: 1 white c. 1 red: 1 white d. 1 red: 1 roan e. all red
Red blood cells are capable of transporting
A. carbon dioxide only. B. nutrients. C. oxygen and carbon dioxide. D. oxygen only.
A glycoprotein
a. can be used as a receptor. b. can be used in enzymatic functions. c. is a type of peripheral protein. d. is a type of peripheral protein above that can be used as a receptor or in enzymatic functions.