Both mitochondria and chloroplasts are thought to have evolved by the process of ____
a. endosymbiosis
b. viral reassortment
c. transformation
d. decomposition
e. nitrogen fixation
ANSWER: a
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Interpreting stable isotopic fractionation depends on the fact that most enzymes preferentially bind ________ isotope substrates over ________ isotope substrates
A) nonradioactive / radioactive B) light / heavy C) heavy / light D) radioactive / nonradioactive
What is different about ferns compared to seed
producing plants?
a. they have a gametophyte stage b. they produce spores c. the zygote develops into a sporophyte d. the roots form from an underground stem e. more than one of these is different about ferns
In terms of classification, humans belong to which domain?
a. prokaryote b. Eukarya c. Archaea d. Bacteria e. protists
Transgenic plants can presently be used for the production of human proteins, including human serum albumin
Indicate whether the statement is true or false