Which group of organisms is the main competition to humans for food and plants?
a. Cattle
b. Birds
c. Insects
d. All compete equally with humans for food
e. Arthropods
c
You might also like to view...
Mutations are _____________.
A.usually weeded out of a population. B.usually neutral. C.usually beneficial. D.necessary for evolution. E.usually detrimental.
Modern automated sequencing machines detect DNA bands by measuring incorporated radioactivity.
Answer the following statement true (T) or false (F)
The HIV virion is best described as a(n)
A. segmented RNA genome in an irregular polyhedron capsid with envelope. B. unsegmented RNA genome in a helical capsid with an envelope. C. unsegmented RNA genome in a long flexible helical capsid with envelope. D. segmented RNA genome in an icosahedral capsid, without envelope. E. segmented RNA genome in helical capsids and an envelope.
The citric acid cycle is a series of oxidation reactions that removes carbon atoms from substrates in the form of CO2. Where do the oxygen atoms in the carbon dioxide molecules come from?
(a) water (b) phosphates (c) molecular oxygen (d) acetyl CoA