Bio Chap 9
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In what part of meiosis does chromatid separation occur?
Anaphase, Meiosis II
What is the difference between Mitosis and Meiosis?
Mitosis produces clones; Meiosis produces variable offspring
In S phase of the cell cycle, what is going on?
Cells prepare for cell division, Cells are replicating
- Chromosomes condense and the nucleolus begins to disappear
- A spindle forms and captures the chromosomes
In which phase of meiosis does separation of homologous chromosomes occur?
In _________________, homologous chromosomes separate from each other and in _________________ sister chromatids separate.
Meiosis I, Meiosis II
If you start with one cell, mitosis produces ____ cells while meiosis produces ____ cells.
A cell containing a diploid number of 36 chromosomes would contain _______ chromosomes in anaphase I
A parent cell containing 12 chromosomes undergoing mitosis will produce daughter cells containing ____ chromosomes
Interphase consists of
G1, S, G2
A homologous pair of chromosomes are:
2 chromosomes containing the same genes
At the very end of oogeneis,
1 ovum and 3 polar bodies are produced
Spermatogenesis closely resembles
Meiosis I and II
In mitosis, _________________ cells are produced and each cell is ___________ in comparison to the parent
2 diploid, identical
Prophase of Meiosis I
True/False: A clone means the same as being diploid
Why is it important for organisms to have genetic variability?
To survive in a changing environment
What causes variation in a population?
Mutations, Crossing over, independent assortment
What are the two important characteristics of stem cells?
Self renewal and ability to differentiate into different types of cells
Humans have 23 pairs of chromosomes. How would you figure out the number of all the possible gamete combinations if independent assortment occurred?
What does a nucleotide consist of?
Phosphate group, Sugar, Base
True/False: DNA is usually single stranded while RNA is usually double stranded
Which of the following statements are false?
A. Adenine double bonds to Thymine
B. Guanine triple bonds to Cytosine
C. Cytosine double bonds to Adenine
D. More than one of the above is incorrect
Cytosine double bonds to Adenine
Which of the following can reproduce asexually?
C. Some eukaryotes
D. Two of the above
E. All of the above
All of the above
Which of the following are true about eukaryotes?
A.Eukaryotes have more DNA than prokaryotes
B. Eukaryotes do not have a membrane bound nucleus, whereas prokaryotes do
C. Eukaryotes never have multiple chromosomes
D. More than one of the above
More than one of the above
What is the correct order of making a chromosome?
1. DNA wraps around histone proteins forming nucleosomes
2. DNA is a double helix
3. Fully folded chromosome
4. Loops attached to a protein scaffold
5. Coiled DNA
2, 1, 5, 4, 3
Changes in DNA are a result of
B. DNA replication
D. Crossing over
E. C and D are correct
C and D are correct
How many chromosomes does a human have and how many are autosomes?
23 pairs of chromosomes with 22 being autosomes
If you have 36 chromosomes, how many would you have at the end of meiosis?
True/False: In telophase of cell division, cells will have fully divided
If you have 100 chromosomes, how many would you have at the end of mitosis?
What electron Donors are made in the Krebs cycle
D: A and B
A and B
Which step produces the most ATP?
Electron Transport Chain
What are the products of glycolysis?
Overall, cellular respiration makes ____ ATP
34 to 36 ATP
Where does glycolysis occur?
For PROKARYOTES, where does the electron transport chain occur?
Which of the following is not a type of fermentation?
The process by which energy is first used to generate a gradient of H+, and then captured in the bonds of ATP as H+ flows down its gradient is called
The following reaction is an example of a what?
Na -----> Na+ + e-
What is the purpose of fermentation?
Oxidize NADH to NAD+
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