Plants in some biomes are adapted to low levels of precipitation. In which biome is low precipitation an abiotic factor?
a) coniferous forest
b) tropical forest
c) desert
d) chaparral
Ans: c) desert
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You extract all of the proteins of a leaf and measure the percentage that is rubisco. You find that
rubisco comprises what percentage of the leaf proteins?
a. 10% b. 25% c. 50% d. 75% e. 90%
Which of the following aspects is NOT
characteristic of diatoms?
a. overlapping shell b. live in fresh water and cool seas c. silica composition d. flagella e. photosynthetic
An invasive bullfrog consumes a Taricha newt and dies immediately. What can you say about the toxin?
A) It is toxic to general vertebrate predators. B) It is specifically toxic only to the garter snake. C) It likely evolved to kill the bullfrog as well after years of coevolution. D) It is an ineffective antipredator defense.
During the polymerization of nucleic acids, covalent bonds are formed between neighboring nucleotides. Which carbons are involved in such bonds?
What will be an ideal response?