Thursday, October 29, 2009

Here's some questions to make those brain cells churn out the ATP!

1. What are the differences between aerobic and anaerobic respiration, and which is more efficient?

2. What are NAD+ and FAD used for?

3. What are the three steps in aerobic respiration, and where does each occur?

4. During which step of cellular respiration is the most ATP made?

5. During aerobic respiration, how many ATPs are made from one molecule of glucose in most cells?

6. What is the role of oxygen in aerobic respiration?

7. Describe how the ATP is made during chemiosmosis

8. What is produced by your muscle cells if there is not enough oxygen available at the end of glycolysis for aerobic respiration to continue?

9. Yeasts do a kind of anaerobic respiration called ____________, and produce ___________ and _________ along with 2 ATP

10. What are the important end products of the Citric Acid Cycle, and what happens to each of these products?

Here are the photosynthesis questions for review:

1. Which colors of light are most strongly absorbed by chlorophyll?
2. How is oxygen released during photosynthesis?
3. Why is water needed in photosynthesis?
4. What are the products of the light dependent reactions?
5. What is made in the light independent reactions?
6. What is the role of RUBP in photosynthesis?
7. What kind of plants use PEP and what advantage does it give them?
8. How are CAM plants different from others in the way they do photosynthesis?
9. What kind of organisms can do photosynthesis?
10. Where inside the chloroplast do the light dependent reactions happen?

More Review Questions about Plants:
1. Compare and contrast the movement of water and food in plants. Include in your answer what kinds of tissues and processes are involved in both.

2. Xylem is functional when dead at maturity while phloem is functional only when alive. Why?

3. In phloem, what is the role of the companion cell?

4. What is the difference between xylem in flowering plants and the xylem found in gymnosperms?

5. What is cohesion of water, and how is this different from adhesion?

6. What part of the root absorbs water?

7. What is the function of the anther in the flower?

8. Which of the following is where one would find ovules?
A. in an anther
B. in the ovary
C. in the stigma
D. in the style

9. Ovules are
A. eggs
B. spores that will become pollen
C. spores that will become eggs
D. immature seeds
E. pollen grains

10. In double fertilization the first sperm fertilizes the egg and the second
A. dies
B. is only used if the first sperm cell dies
C. fertilizes another egg
D. fertilizes a haploid endosperm mother cell to make diploid endosperm
E. fertilizes a diploid ( n+n) endosperm mother cell to make triploid endosperm

11. What is the function of fruit?

12. Microspores become
A. the embryo sac
B. the mature male gametophyte
C. pollen grains
D. all of the above
E. only B and C above

Saturday, October 17, 2009

340 Native Plants in the Ground and Watered Today!

Thanks to everyone who came out today!

We planted over 340 native plants including bladder pod, coastal sagebrush, buckwheat, and black sage today. We also saw some wildlife up close...

This gopher snake may have been the owner of the snake skin we found while working. We also saw lizards, and ground squirrels. The weather was really pleasant for working. It turned out to be cool, not as hot as I had thought it would be! Later in the morning a think layer of fog rolled in as well.

Thursday, October 1, 2009

Mitosis and Meiosis Review

1. If a cell has 8 chromosomes and does mitosis, how many cells will be made, and how many chromosomes will each cell have?

2. If a cell has 8 chromosomes and does meiosis to make sperm cells, how many cells will be made, and how many chromosomes will each cell have?

3. Mitosis creates cells which are ________, while meiosis makes cells which are _____.

4. What are homologous chromosomes?

5. What are sister chromatids?

6. What is crossing over, and during which process, (mitosis or meiosis) does it occur?

DNA Review

Here are some review questions about DNA from the lecture today.

1. Describe the structure of the DNA molecule

2. If the sequence of bases on one stand of the molecule is AAC TGC CCG, what is the sequence on the complemetary strand?

3. During DNA replication, what enzyme breaks the hydrogen bonds between the base pairs, and what enzyme matches up nucleotides to the existing ones on the parent strand of DNA?

4. Why is this type of replication called Semi Conservative?

5. How is RNA different from DNA?

6. The production of messenger RNA from DNA is called ________, and this happens in the __________ of the cell.

7. The parts of the mRNA molecules which are edited out before RNA reaches the cytoplasm are called __________

8. mRNA gets a cap and a tail prior to being read by the ribosome. What is the function of the cap and tail?

9. If the DNA strand being copied had this sequence: ACT GGC ATA CTA what would the sequence of the mRNA be?

10. The function of transfer RNA is ?

11. What is the name of the enzyme that produces RNA from DNA?

12. If the sequence of DNA is the same in your body cells, why are all cells not the same?

13. The DNA in you, an earthworm, and a fungus is the same. So why are you a human and not an earthworm?

14. What is an anti-codon and where is it found?

15. The protein synthesis process that occurs at the ribosome is called _____________

16. What is a stop codon?