Homework 3 answers to Homework 2
|Refer to the figure below for question 1-3:|
| 1. is this molecule
a) a monosaccharide b) disaccharide
c) a fat d) a nucleotide
e) none of these is correct
| 2. the covalent link between these molecules is
a) a peptide bond b) hydrogen bond
c) glycosidic bond e) none of these
| 3. the covalent kink between these molecules is
a) alpha b) beta c) Esther Williams
d) ionic e) none of these
|Refer tot he figure below for questions 4-5|
| 4. The molecule above is classified as a?
a) sugar b) nucleotide c) amino acid
d) fat (lipid) e) none of these
| 5. The classification of the above
molecule is as it is because the
molecule is insoluble in an aqueous
environment. a) true b) false
|refer to the figure below for questions 6-7|
| 6. The type of weak electrostatic bonds
depicted in A. is ?
a) ionic bond
b) van der Walls force
c) hydrophobic attraction
d) hydrophilic attraction
e) none of the above
| 7. The approximate energy required to break
electrostatic bond in the figure above is?
a) greater than 100 Kc/mole
b) over 7,300 Kc/mole
c) between 1 and 5 Kc/mole
d) none of the above
|refer to figure below for question 8-9|
| 8. The molecule above is
a) a nucleotide b) an amino acid
c) a fatty acid d) a sugar
e) none of these
| 9. Is this molecule?
a) saturated b) unsaturated
c) neither saturated or unsaturated
Answers to homework 2
2: 1 (d), 2(b), 3(b), 4(b), 5(c), 6(d), 7(a), 8(d) and
9) You could examine the filtered sap solution
under an electron microscope to determine if there
was a cellular agent present, i.e., very small bacteria,
or is a non-cellular agent as a virus was present.
You could also try to cell culture the filtrate. If it was
bacterial, you might be able to grow them in the absence
of other cells, but if it were viral, you might have to
culture it on host cells.
You could chemically analyze the filtrate for a genome,
DNA or RNA and measure the amount of genetic material
present. If the infective agent was cellular, it would be
expected to have a larger genome than if it were viral.