Life Science Enrichment Quiz
There are 5 questions each on the following themes:
Cell Biology, Genetics, Evolution, Ecology, Physiology, and The Scientific Method
Study the power-point and watch the relevant videos that your teacher gave you to prepare. Then do the best you can on this quiz.
You will need to print out the final score sheet and give it to your teacher when you are done. 70% or better is considered passing.
- 1.
In this human gamete which structure stores most of the genetic information?
- A.
Mitochondrion
- B.
Lysosome
- C.
Nucleus
- D.
Tail
Correct Answer
C. NucleusExplanation
In this type of eukaryotic cell, the genetic information is inside the nucleus as DNARate this question:
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- 2.
Which of the following organelles releases energy from sugars?
- A.
Ribosomes
- B.
Vacuoles
- C.
Chloroplasts
- D.
Mitochondria
Correct Answer
D. MitochondriaExplanation
The mitochondria is the energy factory for the cell.Rate this question:
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- 3.
Which of the following organelles use carbon dioxide to produce sugars?
- A.
Vacuoles
- B.
Ribosomes
- C.
Chloroplasts
- D.
Mitochondria
Correct Answer
C. ChloroplastsExplanation
Photosynthesis happens in the chloroplasts of cells. This is how plants use light to convert carbon dioxide and water into sugar and oxygen.Rate this question:
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- 4.
Which of the following lacks a nucleus?
- A.
A plant cell
- B.
An animal cell
- C.
An amoeba
- D.
A virus
Correct Answer
D. A virusExplanation
Plant cells, animal cells, and amoeba are all eukaryotic which means they have a nucleus. Not only does a virus lack a nucleus, but its not even a living cell at all.Rate this question:
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- 5.
During photosynthesis in plants, what is the source of the carbon in the sugar molecule (C6H12O6)?
- A.
Carbon dioxide in the air
- B.
Carbon monoxide in the air
- C.
Carbon particles in the soil
- D.
Carbon particles in water
Correct Answer
A. Carbon dioxide in the airExplanation
Photosynthesis is where plants take carbon dioxide form the air and water from the soil and make sugar and oxygen with the help of the sun's energy.Rate this question:
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- 6.
The genetic material of an organism is composed of
- A.
Lipids
- B.
Proteins
- C.
Deoxyribonucleic acids
- D.
Complex carbohydrates
Correct Answer
C. Deoxyribonucleic acidsExplanation
DNA is the genetic material for the organism and it is generally found inside the nucleus of the cell.Rate this question:
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- 7.
Which of the following produces identical nuclei in cells?
- A.
Pollination
- B.
Mitosis
- C.
Osmosis
- D.
Fertilization
Correct Answer
B. MitosisExplanation
Mitosis is where a cell makes identical copies of its nucleus before dividing through cytokinesis.Rate this question:
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- 8.
The inheritance of a trait in humans is best described as being determined by
- A.
A single allele
- B.
One or more pairs of alleles
- C.
One pair of chromosomes
- D.
The sex chromosomes of the offspring
Correct Answer
B. One or more pairs of allelesExplanation
Humans receive one allele from mom and one allele from dad. These pairs of alleles determines which traits will be inherited by the baby.Rate this question:
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- 9.
Which of the following cell types is formed by meiosis?
- A.
Muscle cells
- B.
Sperm cells
- C.
Skin cells
- D.
Blood cells
Correct Answer
B. Sperm cellsExplanation
Meiosis makes sex cells that are genetically unique.Rate this question:
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- 10.
In pigeons, the allele for normal feathers (F) is dominant to the allele for frizzy feathers (f). If a purebred, normal-feathered bird (FF) is crossed with a frizzy-feathered bird (ff), how many different feather phenotypes are possible in the offspring?
- A.
1
- B.
2
- C.
3
- D.
4
Correct Answer
A. 1Explanation
The only possible offspring genotype would be heterozygous (Ff) so the only possible phenotype would be normal feather.Rate this question:
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- 11.
How is natural selection in the evolution of long necks in giraffes best explained?
- A.
Shorter-necked giraffes were killed by long-necked giraffes.
- B.
Giraffe necks grew longer because of the bone structure of the animals.
- C.
Giraffes with longer necks survived because they were better suited to the environment.
- D.
Long-necked giraffes mated only with other long-necked giraffes.
Correct Answer
C. Giraffes with longer necks survived because they were better suited to the environment.Explanation
Survival of the fittest -- long necks mean better access to food and better chances of winning a mate.Rate this question:
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- 12.
Which layer most likely contains fossils of the most recently evolved organisms?
- A.
6
- B.
5
- C.
2
- D.
1
Correct Answer
A. 6Explanation
The most recent organism will most likely be in the top layer. The deeper you dig, the older the fossil.Rate this question:
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- 13.
Which of the following is a source of genetic variation within a species?
- A.
Cloning
- B.
Mutation
- C.
Selective breeding
- D.
Natural selection
Correct Answer
B. MutationExplanation
Genetic mutations lead to genetic changes which leads to possible evolution.Rate this question:
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- 14.
The diet of white-tailed deer consists primarily of shrubs. Sika are another species of deer that eat both grasses and shrubs. After an extended drought period, why might the sika population be favored over the white-tailed deer population?
- A.
Sika require less food than do the white-tailed deer.
- B.
Sika require more water than do the white-tailed deer.
- C.
Sika have more food sources than do the white-tailed deer.
- D.
Sika have fewer food sources than do the white-tailed deer.
Correct Answer
C. Sika have more food sources than do the white-tailed deer.Explanation
Having food available is essential for survival of a species.Rate this question:
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- 15.
Skeletal structures are common between two animals of different species. These structures probably exist because both species
- A.
Have a common food source.
- B.
Live in the same environment
- C.
Have survived until the present time
- D.
Are related to a common ancestor.
Correct Answer
D. Are related to a common ancestor.Explanation
Common ancestry means that both animals looks similar because they evolved over time from the same animal species.Rate this question:
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- 16.
the following shows a marine food chain: Phytoplankton --> Zooplankton --> Herring --> Salmon The zooplankton in this food chain are
- A.
Primary producers
- B.
Primary consumers
- C.
Secondary consumers
- D.
Tertiary consumers
Correct Answer
B. Primary consumersExplanation
Producers turn light energy into chemical energy, primary consumers eat producers.Rate this question:
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- 17.
Which of the following sets of organisms would be found in a wetland ecosystem?
- A.
Tortoise, lizard, fly
- B.
Salamander, mosquito, frog
- C.
Moose, seal, lemming
- D.
Lion, giraffe, beetle
Correct Answer
B. Salamander, mosquito, frogExplanation
This is the only group that would actually be found in a wetland.Rate this question:
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- 18.
Which of the following processes allows the cells of an organism to use carbon from the environment?
- A.
Mitosis
- B.
Fertilization
- C.
Transpiration
- D.
Photosynthesis
Correct Answer
D. PhotosynthesisExplanation
Photosynthesis is where plants use sunlight to convert carbon dioxide and water into sugar and oxygen.Rate this question:
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- 19.
Fungi are an important part of a terrestrial ecosystem because they
- A.
Store energy.
- B.
Bond oxygen to sulfur.
- C.
Function as producers.
- D.
Recycle organic matter.
Correct Answer
D. Recycle organic matter.Explanation
Fungi are decomposers. They recycle organic matter back into the soil.Rate this question:
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- 20.
The loss of which trophic level would be most disastrous for the ecosystem?
- A.
Primary consumer
- B.
Secondary consumer
- C.
Apex consumer
- D.
Producer
Correct Answer
D. ProducerExplanation
If the producers all die out, then all of the other animals will run out of food as well.Rate this question:
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- 21.
Which of the following levels of organization best represents the sequence from smallest unit to largest?
- A.
Cell, organism, organ, tissue
- B.
Cell, tissue, organ, organ system
- C.
Cell, organism, tissue, organ system
- D.
Cell, tissue, organism, organ
Correct Answer
B. Cell, tissue, organ, organ systemExplanation
The correct answer is cell, tissue, organ, organ system. This sequence represents the hierarchical organization of living things, starting with the basic unit of life (cell), followed by the grouping of cells with similar functions (tissue), then the combination of different tissues to form a structure with a specific function (organ), and finally the coordination of multiple organs to perform a larger function (organ system).Rate this question:
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- 22.
Which of the following pairs provides structural support for a human?
- A.
Skin and blood
- B.
Bones and muscles
- C.
Spine and heart
- D.
Brain and nerves
Correct Answer
B. Bones and musclesExplanation
The skeletal structure and muscles provide the structural support for a person.Rate this question:
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- 23.
Which three human-body systems coordinate to cause an arm to move?
- A.
Nervous, muscular, skeletal
- B.
Respiratory, muscular, digestive
- C.
Skeletal, circulatory, immune
- D.
Digestive, nervous, circulatory
Correct Answer
A. Nervous, muscular, skeletalExplanation
Bones are moved by muscles which are triggered by nerves.Rate this question:
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- 24.
As a person exercises, carbon dioxide (CO2 ) levels in the blood increase. This causes the nervous system to signal which of these systems to respond?
- A.
Digestive and immune
- B.
Immune and respiratory
- C.
Respiratory and circulatory
- D.
Circulatory and endocrine
Correct Answer
C. Respiratory and circulatoryExplanation
The body needs to get the CO2 out and get more O2 in. Speeding the heart-rate and increasing breathing help to keep you alive.Rate this question:
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- 25.
The purpose for giving a person a vaccine is to
- A.
Introduce chemicals that destroy viruses.
- B.
Stimulate an immune response.
- C.
Prevent inflammation.
- D.
Cure a disease.
Correct Answer
B. Stimulate an immune response.Explanation
Vaccines teach the immune system to react by mimicking a natural infection.Rate this question:
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- 26.
The jackrabbit population sometimes decreases dramatically. One possible explanation for this decrease is that the coyote population has increased. This explanation is a scientific
- A.
Conclusion
- B.
Experiment
- C.
Hypothesis
- D.
Law
Correct Answer
C. HypothesisExplanation
A hypothesis is an educated guess that must be tested and proven true/false.Rate this question:
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- 27.
A mineral supplement designed to prevent the common cold was given to two groups of people during a scientific study. After eight weeks, neither group reported a case of the common cold. Which of the following would have made the outcome of this study more valid?
- A.
Test only one group with 150 mg of the supplement.
- B.
Give the supplement to both groups for only 6 weeks.
- C.
Create a third group that receives 75 mg of the supplement.
- D.
Create a third group that does not receive the supplement.
Correct Answer
D. Create a third group that does not receive the supplement.Explanation
This is called the "control group" -- the group that goes unchanged to compared results with.Rate this question:
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- 28.
A prediction was made that the best conditions for earthworm growth occur when there are fewer than five earthworms per cubic meter of soil. This prediction is called a
- A.
Law
- B.
Theory
- C.
Hypothesis
- D.
Conclusion
Correct Answer
C. HypothesisExplanation
A hypothesis is an educated prediction that must be tested and proved true/false.Rate this question:
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- 29.
An experiment is performed to determine whether increasing the amount of water given to plants affects the rate of plant growth. The scientist takes 5 of the same plant and waters each at a different rate each day. At the end of each day the scientist measures the overall growth of each plant. In this example, which is the "independent variable"?
- A.
The scientist
- B.
The amount of water
- C.
The rate of growth
- D.
The hypothesis
Correct Answer
B. The amount of waterExplanation
The independent variable is the thing that the scientist himself/herself directly changes. In this example, the scientist directly changes the amount of water given to each plant.Rate this question:
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- 30.
An experiment is performed to determine whether increasing the amount of water given to plants affects the rate of plant growth. The scientist takes 5 of the same plant and waters each at a different rate each day. At the end of each day the scientist measures the overall growth of each plant. In this example, which is the "dependent variable"?
- A.
The scientist
- B.
The amount of water
- C.
The rate of growth
- D.
The hypothesis
Correct Answer
C. The rate of growthExplanation
The dependent variable is the thing that is measured as a result of what the scientist does. In this example, the scientist directly changes the amount of water in order to observe the changes in the rate of growth for each plant.Rate this question:
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Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Mar 19, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 27, 2014Quiz Created by
Shousebiology
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