A certain animal has 4 pairs of homologous chromosomes designated A and a for pair 1, B and b for pair 2, D and d for pair 3, and E and e for pair 4. The following questions pertain to this individual:

a. Which chromosomes could not have been contributed as a set by his father?

a) A, B, D, E
b) A, L, D, E
c) Bd
d) A
e) E, e

b. How many chromosomes came from his father? a) 2 b) 4 c) 6 d) 8 e) none of these c. Which chromosome complement is found in his skin cells?

a) aabbDDEE
b) AaBbDdEe
c) AAee
d) ABDE
e) AbDe
f) can't tell for sure because it will vary

d. Which complement could be found in his sperm cells?

a) AABBDDEE
b) Aa BbDdEe
c) Alee
d) ABDE
e) none of these is possible

e. How many chromosomes will he pass on to his daughter?

a) 2 b) 4 c) 6 d) 8 e) a variable number

f. How many chromatids are present at metaphase I in his primary spermatocytes?

a) b) 4 c) 8 d) 12 e) 16

g. How many pairs of homologous chromosomes are present at metaphase II in his secondary spermatocytes?

a) O b) 4 C) 8 d) 12 e) 16

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis