
Biology
Cell Cycle and Cell Division Solutions
Use the image to the RIGHT to identify the
following structures:
Structre of DNA
N-H
A)
What is the basic unit
(monomer)?
H
O=P
-O
CH2
Nitrogenous
base
(adenine)
Phosphate
group
H
OHM
Sugar
B)
Describe the shape:
DOO
Describe the Orientation
(direction) of the 2 Strands:
a. DNA
1. Sequence of DNA that
codes for a protein and thus
determines a trait
2. The two copies of a
duplicated chromosome attached to
each other at the centromere
b. Gene
Thymine (1)
Adenine (A)
Explain
Chargaff's Rule:
Cytosine (0)
Guanine (6)
c. Chromosomes
CH
OHN
-HO
NH
N
SUGAR
SUGAR
d. Homologous Chromosomes
SUGAR
SUGAR
OHN
e. Sister Chromatids
3. A nucleic acid
molecule, usually double stranded
helix, in which each strand consists of
nucleotide monomers
4. A pair of chromosomes
of the same length, centromere
position, and staining pattern that
have the same genes for the same
characteristics.
5. A cell containing only
one set of chromosomes
6. The stage in which the
DNA and proteins when it is ready to
divide.
Homologus
chromosome
Hordo
throoms
DNA REPLICATION-
f. Haploid
Core
-88-XX
Replication
When: S-Phase of Interphase
What: Copy DNA in
preparation for cell division.
Why: To ensure each
resulting cell has an exact
copy of the DNA.
g. Diploid
chos
Saler
chromada
7. A cell containing two
sets of chromosomes, one set
inherited from each parent
A3
DE VÍNBT ENCHON