ANSWERS TO LAB REVIEW
1. See "Water will move" handout
DISTILLED
WATER |
|
20%
sugar solution |
LOW OSMOTIC
CONCENTRATION |
|
HIGH OSMOTIC
CONCENTRATION |
HYPOTONIC |
|
HYPERTONIC |
HIGH FREE
ENERGY (orderly) |
|
LOW FREE
ENERGY (more disorder) |
HIGH OSMOTIC
POTENTIAL |
|
LOW OSMOTIC |
Low MOLARITY
(M) |
|
High MOLARITY
(M) |
Low ENTROPY
(orderly) |
|
High
ENTROPY(more disorder) |
LOW OSMOTIC
PRESSURE |
|
HIGH OSMOTIC
PRESSURE |
HIGH WATER
POTENTIAL (ψ) |
|
LOW WATER
POTENTIAL (ψ) |
2. Tube 3 (0.2 M inside:0.2M outside) will change the least
3. catalase is the enzyme; hydrogen peroxide is the substrate
4. acid denatures the enzyme
5. D mitosis divides once; meiosis divides twice
6..telophase is called reverse prophase
7. Rf
= __Distance substance moved_ = 11.5/12 = 0.96
Distance solvent front moved
8. C-DPIP accepts
electrons
9. .8 ml/20 min = 0.04 ml/min
10. D-KOH binds CO2 and removes it
11. Plate II -plasmid + antibiotic
12. LANE 3- BamHI cuts into 3 fragments; 2kb, 6kb, 12kb
13. D- genes for eye
color and wings are inherited independently
No difference in males:females; See 9:3:3:1 ratio;
98 red/normal; 22 red/no wings; 26 sepia/normal wings; 14 sepia/no wings
14. X2 = 5.14 Look on table. 1 degree of freedom/0.05 column = 3.841 5.14 > 3.841 so reject the hypothesis that there is no difference between observed and expected.
15. 1/10,000 = q2
So q = 0.01
p + q = 1 so p = 0.99
Heterozygous = 2pq = 2 (.99) (0.1)= 0.02 or 2%
16. D. frequency of dominant or recessive alleles is not one of the conditions for Hardy-Weinberg equilibrium to exist
17. Warm, breezy will transpire more
18. D-water moves from high water potential to low water potential: spongy mesophyll in leaves will have the lowest water potential
19. increasing temperature increases heart rate in daphnia
20. snake will be most affected by changes in environment; fish is cold blooded too but lake won't change temperature as rapidly
21. taxis is directional (toward or away): kinesis in increased movement but random
22. E- there is a preference.
23. screens simulate light reaching different depths in the lake
24. Net productivity with decrease (more respiration compared to photosynthesis) due to less light getting through to the bottom