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Reproduction And Heredidty
Test Description: 7th Grade
Instructions: Answer all questions to get your test result.
1) What is DNA?
A
a type of molecule that speeds up the rate of a chemical reaction
B
a type of molecule composed mostly of amino acids
C
a type of molecule that determines the traits that an individual inherits
D
a type of molecule that performs the main functions of cells
2) Which of these choices describes a segment of DNA that determines a specific trait in a person, such as attached earlobes?
A
a characteristic
B
a phenotype
C
a gene
D
a chromosome
3) Ryan notices that all of his friend’s brothers and sisters are tall. What is the most likely explanation for this characteristic?
A
They live in the same environment.
B
They eat only healthy foods.
C
They have identical genes.
D
They have tall parents.
4) Some traits are inherited and others are acquired. Which of the following is an acquired trait in humans?
A
table manners
B
blood type
C
hair color
D
eye color
5) Which statement about genes is always true?
A
Genes are located on chromosomes within the cell nucleus.
B
Many genes are required to determine a single trait.
C
Each gene is responsible for a single trait.
D
Both inherited traits and acquired traits are determined by genes
6) Which of the following is an example of a trait a person may have because of heredity?
A
a pierced ear
B
a light skin tone
C
a scar on a forehead
D
a blister on a finger
7) A scientist is studying the genetic material that determines the traits of an individual. In which part of the cell must the scientist focus her studies?
A
cell wall
B
cytoplasm
C
nucleus
D
cell membrane
8) Which of the following is an advantage of asexual reproduction?
A
The organism can increase in number quickly.
B
Two parents are needed.
C
It introduces genetic diversity in the offspring.
D
It is a slow process.
9) Which of these statements is true of asexual reproduction?
A
It produces offspring genetically different from each other and requires two parents.
B
It produces offspring genetically identical to each other and requires one parent.
C
It produces offspring genetically different from each other and requires one parent.
D
It produces offspring genetically identical to each other and requires two parents.
10) Which of these statements correctly describes one way that asexual and sexual reproduction are different?
A
Asexual reproduction increases a species’ chances of surviving unfavorable conditions, but sexual reproduction does not.
B
Asexual reproduction involves one parent, and sexual reproduction involves two parents.
C
Asexual reproduction increases genetic diversity, but sexual reproduction does not.
D
The offspring produced by asexual reproduction are not identical to each other, but those of sexual reproduction are identica
11) Which of these statements is true for organisms that reproduce asexually?
A
organisms that reproduce asexually are more likely to expend energy to find a mate.
B
organisms that reproduce asexually are less likely to require only one parent for reproduction to take place.
C
organisms that reproduce asexually are less likely to expend energy caring for their offspring.
D
organisms that reproduce asexually are more likely to have offspring genetically different from themselves.
12) Which of these statements correctly describes one way that asexual and sexual reproduction are alike?
A
Both types of reproduction require two parents to produce offspring
B
Both types of reproduction can occur in all organisms, depending on environmental conditions
C
Both types of reproduction result in offspring that are identical to one parent.
D
Both types of reproduction enable genetic information to be passed from parent to offspring.
13) Which of the following organisms can produce offspring that are genetically identical to the parent?
A
strawberry plants
B
mosquitoes
C
ducks
D
horses
14) How would living things differ if cell division took place only for reproduction?
A
Multicellular organisms would be unable to repair damaged cells.
B
Multicellular organisms would be much smaller.
C
Living things would be more genetically diverse.
D
All living things would be single-celled.
15) Jorge looks through a microscope and observes the structures of cells on a microscope slide. He concludes that the cells he observes are eukaryotic cells. Which of the following structures did Jorge most likely observe before making his conclusion?
A
genetic material
B
cytoplasm
C
nucleus
D
cell membrane
16) Which statement correctly identifies a cell type and explains why?
A
This is a plant cell; the evidence is the cell wall.
B
This is an animal cell; the evidence is the mitochondria.
C
This is an animal cell; the evidence is the cell membrane.
D
This is a plant cell; the evidence is the nucleus.
17) What evidence exists in a cell to indicate that it is a plant cell and not an animal cell?
A
he ribosomes and cell wall
B
the nucleus and chloroplasts
C
the cell wall and chloroplasts
D
the mitochondrion and Golgi complex
18) If you were to compare the function of a cell to the function of a city, which of the following organelles would be the city’s power plant?
A
mitochondrion
B
DNA
C
nucleus
D
chloroplast
*select an answer for all questions
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