Biology 1201A Chapter 8: cell cycle Ch.8
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1- Most of a cell's life is spend in this phase of the cell cycle:
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2- The cell cycle is a highly regulated process.
True
False
3- Cells replicate their DNA during ________________ phase.
G
S
Q
M
4- In animal cells, ________________________ is the indentation of the cell's surface that marks cytokinesis, the final splitting of the membrane, in the process of cell division.
cleavage furrow
binary fission
cell plate
sister chromatids
5- Somatic ("body") cells are _______________ (2n). This means there are two copies of each chromosome.
6- During the _______ phase(s) cells perform their everyday functions.
S
M
Q
G
7- When chromosomes are duplicated the two strands are called _______________________________ and they are linked together at a point called the ____________________.
sister strands; kinetochore
sister chromatids; centromere
dual chromatids; centromere
genes; chromatid
8- New somatic âbodyâ cells are formed by this process:
meiosis
binary fission
replication
mitosis
9- The cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
10- Cells replicate their DNA during ________________ phase.
S
Q
G
M
1.
__________ are fairly small organelles that provide a safe place within the cell to carry out certain biochemical reactions that generate harmful, highly reactive oxygen species. These chemicals are both generated and broken down in the same location.
Lysosomes |
Endosomes |
Peroxisomes |
Nucleosomes 2. Biologists cannot possibly study all living species. Instead, they try to understand cell behavior by studying a select subset of them. Which of the following characteristics are useful in an organism chosen for use as a model in laboratory studies?
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