Which of the following threats to biodiversity is attributed to increased mobility and trade?
a. habitat loss
b. global climate change
c. introduction of exotic species
d. overharvesting
c. introduction of exotic species
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Which of the following enzymes is associated with the formation of peptide binds?
A) peptidase B) aminoacyl transferase C) peptidyl transferase D) peptide hydrolase E) inteins
The primate fossil named Lucy was
a. a dryopith. b. an australopith. c. a cercopith. d. a prosimian. e. none of these.
The neuron that releases neurotransmitters is known as ________, while the neuron that receives the neurotransmitters is knows as ________
Fill in the blank(s) with correct word
Oxygen, with an atomic number of 8, is a neutral atom and has ________ electrons in the first electron shell and ________ electrons in the second electron shell
A) 4; 4 B) 3; 5 C) 5; 3 D) 1; 7 E) 2; 6