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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 determines the traits that an individual inherits
B
a type of molecule composed mostly of amino acids
C
a type of molecule that performs the main functions of cells
D
a type of molecule that speeds up the rate of a chemical reaction
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 chromosome
D
a gene
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 have tall parents.
C
They have identical genes.
D
They eat only healthy foods.
4) Some traits are inherited and others are acquired. Which of the following is an acquired trait in humans?
A
blood type
B
eye color
C
hair color
D
table manners
5) Which statement about genes is always true?
A
Both inherited traits and acquired traits are determined by genes
B
Each gene is responsible for a single trait.
C
Genes are located on chromosomes within the cell nucleus.
D
Many genes are required to determine a single trait.
6) Which of the following is an example of a trait a person may have because of heredity?
A
a blister on a finger
B
a pierced ear
C
a light skin tone
D
a scar on a forehead
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
nucleus
B
cell wall
C
cytoplasm
D
cell membrane
8) Which of the following is an advantage of asexual reproduction?
A
It is a slow process.
B
It introduces genetic diversity in the offspring.
C
Two parents are needed.
D
The organism can increase in number quickly.
9) Which of these statements is true of asexual reproduction?
A
It produces offspring genetically different from each other and requires one parent.
B
It produces offspring genetically identical to each other and requires one parent.
C
It produces offspring genetically different from each other and requires two parents.
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
The offspring produced by asexual reproduction are not identical to each other, but those of sexual reproduction are identica
B
Asexual reproduction increases a species’ chances of surviving unfavorable conditions, but sexual reproduction does not.
C
Asexual reproduction increases genetic diversity, but sexual reproduction does not.
D
Asexual reproduction involves one parent, and sexual reproduction involves two parents.
11) Which of these statements is true for organisms that reproduce asexually?
A
organisms that reproduce asexually are less likely to require only one parent for reproduction to take place.
B
organisms that reproduce asexually are more likely to expend energy to find a mate.
C
organisms that reproduce asexually are more likely to have offspring genetically different from themselves.
D
organisms that reproduce asexually are less likely to expend energy caring for their offspring.
12) Which of these statements correctly describes one way that asexual and sexual reproduction are alike?
A
Both types of reproduction can occur in all organisms, depending on environmental conditions
B
Both types of reproduction require two parents to produce offspring
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
mosquitoes
B
ducks
C
strawberry plants
D
horses
14) How would living things differ if cell division took place only for reproduction?
A
Living things would be more genetically diverse.
B
Multicellular organisms would be much smaller.
C
Multicellular organisms would be unable to repair damaged cells.
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
cytoplasm
B
cell membrane
C
genetic material
D
nucleus
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 cell membrane.
C
This is an animal cell; the evidence is the mitochondria.
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
the nucleus and chloroplasts
B
the cell wall and chloroplasts
C
he ribosomes and cell wall
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
chloroplast
B
DNA
C
mitochondrion
D
nucleus
*select an answer for all questions
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