Name:
Pd:
Due Tues, Jan 13
Biology 10.1 and 10.2 Review
10.1
1. As cells grow larger, they face two problems:
A. More
demand
B. It becomes
less
on its DNA
efficient at
moving
materials.
2. As cells get larger, the surface area to volume (SA:V) ratio
3. When cells get too large, they go through
cell division
decreases
.
.
4. Fill in the table below
Asexual
Sexual
Identical
Mix of both
Advantage
Quick and many
Genetic diversity
Disadvantage
No genetic diversity
Slow
Offspring
are…
10.2
5. Describe what the DNA looks like in prokaryotes.
Single, circular strand
6. DNA + Histone protein =
7. DNA is condensed into
Nucleosome
chromatin
_
, which is condensed into
chromatids ,
which make up chromosomes.
8. Prokaryotes go through a type of cell division called binary
When eukaryotes go through cell division, it is called
fission ..
mitosis .
9. What part of the cell cycle is made up of G1, S, and G2 phases?
Interphase
10. What happens in the G1 phase? Growth
In the S phase?
Synthesize new DNA
11. What two phases make up the M phase? What is the difference between them?
Mitosis – Nucleus splits
Cytokinesis – Cytoplasm splits
Name:
Pd:
Due Tues, Jan 13
12. How are the chromatids and centromere related?
Centromere connects the chromatids
13. How are centrioles and the spindle related?
Centrioles organize the spindle
14. List the four phases of mitosis in order. Tell me one thing that happens during
each phase, and draw a picture of the phase as well.
Phase and picture
1. Prophase - chromosomes condense and
becomes visible.
Centrioles move to opposite sides of nucleu
The nucleolus disappears and
nuclear envelope breaks down
2. Metaphase - centromeres line up across
the center.
A spindle fiber from each pole connects to the
centromere.
3. Anaphase - centromeres are
pulled apart and each chromatid becomes a
separate chromosome.
The chromosomes move towards the poles.
4. Telophase - chromosomes unwind into chromatin.
Nuclear envelope re-forms around chromosomes.
Spindle breaks apart, and the nucleolus becomes visible in
each daughter nucleus.
Description