WorksheetsUnit 3 Cell Cycle Review
Total questions: 43
Worksheet time: 51mins
Which of the following units are repeatedly joined together to form a strand of DNA?
Amino Acids
Nucleotides
Fatty Acids
Polysaccharides
In what phase of the cell cycle does DNA replication take place?
G1
S
G2
Prophase
The process of DNA replication is called semi conservative because it results in
none of these
Two DNA molecules. One original molecule and one with two new strands
two exact copies with new strands
two DNA molecules, each with 1 original strand and one new.
Why does DNA replicate?
To create a duplicate copy in case the original gets damaged
So that new cells will have a copy of the DNA
To create a new copy to replace the damaged original
Nitrogen bases are joined by which type of bond?
polar bonds
hydrogen bonds
phosphate bonds
deoxyribose bonds
Adenine bonds with _____
Cytosine
Thymine
Guanine
Uracil
Why is DNA important?
it is very small and very complicated
it's in everything
it serves as the blueprint for traits of all living things
because we eat it every day for energy
Cytosine bonds with ____
Adenine
Thymine
Guanine
Uracil
What does DNA stand for?
Deoxyribonucleic acid
Denitrogenous acid
Deribonucleic acid
Diribonucleic acid
What is needed for DNA replication to unzip at the hydrogen bonds?
phosphates
enzymes
deoxyribose (sugar)
hydrogen
This is an example of -
THE DOG HID THE TOY (ORIGINAL)
THE DOH IDT HET OY? (NEW)
addition
substitution
deletion
What is cancer?
The cell cycle moves too slowly
Mitosis is skipped in the cell cycle
A cell enters into the G1 phase
Uncontrolled growth of Cells
Tumors are...
all malignant
mass of abnormal cells that can grow uncontrollably
usually benign
always metastasizing
Stem cells are ____________________.
cells that grow uncontrollably
undifferentiated cells that can turn into other types of cells
the first cells of a new living organism (fertilized egg)
specialized cells that do one job
Why are your muscle cells different from your nerve cells?
muscle and nerve cells have different DNA, different genes
muscle and nerve cells have the same DNA (same genes) but different genes are turned on
muscle and nerve cells began with the same DNA (same genes) but some different genes were destroyed by each cell type
muscle cells are not different from nerve cells, they are the same
Which best explains why muscle cells are different from blood cells?
A mutation occurs during the development of muscle cells but not in blood cells.
Different genes are activated in muscle cells than in blood cells.
Muscles cells experience different environmental influences than blood cells.
Muscle cells are produced by the brain, but blood cells are produced by the heart.
