Biology Final: Test 3
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- Which of the following is produced in (a product of) photosynthesis?
- oxygen
- How do organisms undergoing photosynthesis counteract the greenhouse effect?
- they consume carbon dioxide.
- Where do the light independent reactions take place?
- in the chloroplast
- The light dependent reactions directly use ____ as an energy source.
- light
- The spindle apparatus in meiosis _____.
- moves chromosomes within the cell
- Meiosis is used in the ____ organs.
- reproductive
- In what stage of meiosis do sister chromatids separate?
- Anaphase II
- In interphase, duplication of ______ occurs.
- chromosomes
- Photorespiration occurs when rubisco binds to ____ and no glucose is produced.
- oxygen
- When chromosomes form homologous pairs, the DNA in one homologous chromosome is exactly the same as the DNA in another homologous chromosome.
- true
- When your skin cells die, you use ___ to produce cells to replace the dead cells.
- mitosis
- In humans in mitosis, we start with 1 cell that has 46 chromosomes and end up with ___ cells that have __ chromosomes.
- 2, 46
- Where in photosynthesis is carbon dioxide used?
- the light independent reactions(calvin cycle)
- The stomata primarily allow ___ and ____ to enter the leaf
- water, NADPH
- Which of the following wavelengths of light can be absorbed by most plants?
- red, orange, blue...etc
- NADPH is produced in the ______.
- light dependent reactions
- Cancer is caused by _____.
- excessive cell division
- ____ is the term used to refer to cancer in the skin (external lining.)
- Sarcoma
- If someone went to the doctor and were told their cancer metastasized, this would mean, ______.
- the cancer had spread beyond the original site.
- ___is the type of cell division utilized by cancer cells
- Mitosis
- Radiation works by destroying cells that are __.
- dividing
- Which of the following is a new method we discussed in class for detecting cancer?
- using cancer sniffing dogs
- Most of the cells in your body undergo meiosis
- true?
- How many chromosomes does an egg cell have in humans?
- 23
- Chromosomes are duplicated when?
- prior to mitosis I
- When does crossing over take place?
- Prophase I
- When do homologous chromosomes separate?
- in Anaphase II
- If an organism has 4 chromosomes in its gametes, how many different combinations of chromosomes could appear in that gamete?
- 4
- If an organism has a diploid number of 10 chromosomes, then how many chromosomes would it have in its gametes?
- 10
- Meiosis begins with _____ cell and after meiosis I and II the end product is ______ cell.
- 1 diploid, 4 haploid
- If a mouse had certain genes and then through crossing over the same chromosome contained genes that now coded for different traits. This would be an example of _____.
- genetic recombination
- Independent Orientation of chromosomes occurs in which stage of meiosis?
- Metaphase I