Download 7th Grade Science Assessment Name

7th Grade Science Assessment Name______________________
RIO Unit 13- Cells, Inheritance, DNA
1.
What packages a molecule of DNA?
A. nucleus
B. Chromosome
C. Gamete
D. Diploid
2. What choice below that best shows various
types of genetic material in order from simplest
to most complex?
A. genome chromosome gene
4. What are the instructions, or code, that are
responsible for all of the inherited traits of an
organism?
A. Is formed after an organism are fully
grown.
B. are stored within the cell membrane of
cells.
C. are held in genetic material called DNA
D. are passed from the offspring to the
parent.
5. What can be described as alternate forms
of a particular gene?
B. chromosome genome gene
A.
B.
C.
D.
C. gene chromosome genome
Alleles
Chromosomes
DNA molecules
chromatids
D. gene genome chromosome
3. What choice best completes the following
sentence?
A normal human has a total of ___
chromosomes: ___ chromosomes come from the
mother and ___ chromosomes came from the
father.
A.
B.
C.
D.
50,25,25
23,11,12
46,23,23
23,12, 11
6. What can be defined as a basic unit of
hereditary information which refers to a
specific segment of DNA that influences a
particular trait or group of traits?
A.
B.
C.
D.
Gamete
Gene
Zygote
Chromosome
7. What is a DNA molecule shaped like?
A.
B.
C.
D.
Long, thin rod
Spiral staircase
Straight ladder
Triple helix
8. During DNA replication, what does adenine
(A) always pair with?
A.
B.
C.
D.
Guanine (G)
Cytosine (C)
Thymine (T)
Adenine (A)
9. What is the function of a cell membrane?
A. To support the cell
B. To perform different functions in each
cell
C. To control what enters and leaves the
cell
D. To form a hard outer covering for the
cell.
10. Which of the following best describes the
function of the mitochondria?
A. They convert energy from food
molecules into energy the cell can use.
B. They store energy from food molecules
C. They store energy from sunlight
D. They produce nucleic acids that release
energy.
11. Which organelle is the control center of a
cell?
A.
B.
C.
D.
Mitochondrion
Ribosome
Nucleus
Chloroplast
12. What is each rung of the DNA ladder is made
of?
A.
B.
C.
D.
A single nitrogen base.
A pair of nitrogen bases.
Three nitrogen bases
Four nitrogen bases.
13. Why is water important for a cell?
A. Water is the main ingredient in DNA
B. All proteins are made of water.
C. Most chemical reactions in cells require
water.
D. Water gives the cell energy
14. What are the cell membrane and water are
both involved in?
A. Directing the cell’s activities
B. Making chloroplasts.
C. The movement of materials into and out
of the cell.
D. Preventing chemical reactions from
taking place.
18. Which combination of sex chromosomes
results in a male human being?
A.
B.
C.
D.
XX
XY
YY
Either XX or YY
19. What is the order in which cells are put
together to form a tissue?
A. .
B. Phospahates are arranged in DNA
C. Amino acids are put together to form a
protein
D. Chromosomes are arranged in the
nucleus
20. When sex cells combine to produce
offspring, what will each sex cell (egg- female)
(sperm- male) contribute?
A. One foruth ¼ the number of
chromosomes in body cells
B. Half ½ the number of chromosomes in
body cells
C. The normal number of chromosomes in
body cells
D. Twice the number of chromosomes in
body cells