Reproduction And Heredidty Question Preview (ID: 27453)
7th Grade.
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What is DNA?
a) a type of molecule composed mostly of amino acids
b) a type of molecule that performs the main functions of cells
c) a type of molecule that speeds up the rate of a chemical reaction
d) a type of molecule that determines the traits that an individual inherits
Which of these choices describes a segment of DNA that determines a specific trait in a person, such as attached earlobes?
a) a gene
b) a phenotype
c) a chromosome
d) a characteristic
Ryan notices that all of his friend’s brothers and sisters are tall. What is the most likely explanation for this characteristic?
a) They have tall parents.
b) They have identical genes.
c) They eat only healthy foods.
d) They live in the same environment.
Some traits are inherited and others are acquired. Which of the following is an acquired trait in humans?
a) eye color
b) hair color
c) blood type
d) table manners
Which statement about genes is always true?
a) Each gene is responsible for a single trait.
b) Many genes are required to determine a single trait.
c) Genes are located on chromosomes within the cell nucleus.
d) Both inherited traits and acquired traits are determined by genes
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 scar on a forehead
c) a light skin tone
d) a pierced ear
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
Which of the following is an advantage of asexual reproduction?
a) It is a slow process.
b) Two parents are needed.
c) The organism can increase in number quickly.
d) It introduces genetic diversity in the offspring.
Which of these statements is true of asexual reproduction?
a) It produces offspring genetically identical to each other and requires one parent.
b) It produces offspring genetically identical to each other and requires two parents.
c) It produces offspring genetically different from each other and requires one parent.
d) It produces offspring genetically different from each other and requires two parents.
Which of these statements correctly describes one way that asexual and sexual reproduction are different?
a) Asexual reproduction increases genetic diversity, but sexual reproduction does not.
b) Asexual reproduction involves one parent, and sexual reproduction involves two parents.
c) Asexual reproduction increases a species’ chances of surviving unfavorable conditions, 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
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 expend energy caring for their offspring.
c) organisms that reproduce asexually are less likely to require only one parent for reproduction to take place.
d) organisms that reproduce asexually are more likely to have offspring genetically different from themselves.
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 result in offspring that are identical to one parent.
c) Both types of reproduction enable genetic information to be passed from parent to offspring.
d) Both types of reproduction can occur in all organisms, depending on environmental conditions
Which of the following organisms can produce offspring that are genetically identical to the parent?
a) ducks
b) horses
c) mosquitoes
d) strawberry plants
How would living things differ if cell division took place only for reproduction?
a) All living things would be single-celled.
b) Multicellular organisms would be much smaller.
c) Living things would be more genetically diverse.
d) Multicellular organisms would be unable to repair damaged cells.
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) nucleus
b) cytoplasm
c) cell membrane
d) genetic material
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 a plant cell; the evidence is the nucleus.
c) This is an animal cell; the evidence is the mitochondria.
d) This is an animal cell; the evidence is the cell membrane.
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
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) nucleus
b) chloroplast
c) mitochondrion
d) DNA
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