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*Please answer quickly!*
1. Nucleic acids include RNA and DNA. The monomers of these molecules are ____.
a
fatty acids
b
amino acids
c
nucleotides
d
monosaccharides
2. Phospholipid molecules in a membrane are arranged with their ______ on the exterior and their _____ on the interior.
a
hydrophilic heads…hydrophobic tails
b
hydrophobic heads….hydrophilic tails
c
hydrophobic tails…hydrophilic heads
d
nonpolar heads…polar tails
3.A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH are ALL three of the enzymes below the LEAST effective?
a
2
b
5
c
7
d
10
4.Sally's teacher asked her to classify a microscopic organism found in pond water. The FIRST characteristic Sally used to figure what kingdom the organism belonged to was
a
chemical composition of cell wall.
b
cell diameter.
c
cell type.
d
number of ribosomes present.
5. As DDT (or other persistent chemical that can biomagnifiy) moves up the trophic levels in food chains, or food webs, its concentration ____.
a
is eliminated
b
increases
c
decreases
d
stays the same
3 answers
why even type all that this is a hw help site and u would not have fund it unless u looked up the question
Number one is monosaccharides