Mid-year Seventh Grade Life Science Exam
Mid-Year Seventh Grade Life Science Exam
- 1.Please note that up to 25 points will be added to the 75 obtained here for your FINAL EXAM GRADE.
- 2.Please select the BEST answer.
- 3.The gradual change in species over time is called ...
- A.
Taxonomy
- B.
Homeostasis
- C.
Evolution
- D.
Classification
- 4.Making a forecast of what will happen in the future based on past experience or evidence is called ...
- A.
Observing.
- B.
Inferring.
- C.
Predicting.
- D.
Classifying.
- 5.How does a bacterial cell differ from a plant or animal cell?
- A.
It is larger.
- B.
It does not have a nucleus.
- C.
It has no cytoplasm.
- D.
It has no organelles.
- 6.Which term refers to the diffusion of water molecules through a selectively permeable membrane?
- A.
Osmosis
- B.
Engulfing
- C.
Active transport
- D.
Passive transport
- 7.Which of the following is an example of thinking scientifically about a topic?
- A.
Finding out how bicycles work.
- B.
Reading a consumer report about bicycles.
- C.
Evaluating the cost of bicycles.
- D.
Investigating the invention of bicycles.
- 8.What is the total magnification of a microscope with two lenses when one lens has a magnification of 15, and the other has a magnification of 30?
- A.
15
- B.
30
- C.
45
- D.
450
- 9.The stage of respiration that releases most of the energy in glucose occurs in the....
- A.
Nucleus
- B.
Chloroplast
- C.
Cytoplasm
- D.
Mitochondria
- 10.Unlike the cell wall, the cell membrane...
- A.
Is found in all cells.
- B.
Is made of chromatin
- C.
Protects the nucleus with a rigid layer of cellulose.
- D.
Produces energy for the cell.
- 11.Which branch of science includes the study of the stars?
- A.
Earth and space science
- B.
Life science
- C.
Physical science
- D.
Scientific literacy
- 12.How are photosynthesis and respiration related?
- A.
They have opposite equations.
- B.
They have the same equation.
- C.
They both produce carbon dioxide.
- D.
They both produce oxygen.
- 13.The more classification levels that two organisms share
- A.
The closer together on Earth they live.
- B.
The easier it is to them apart.
- C.
The more characteristics they have in common.
- D.
The more distantly related they are.
- 14.When scientists create a representation of a complex process, they are...
- A.
Inferring
- B.
Predicting
- C.
Classifying
- D.
Making models
- 15.A trait that helps an organism survive and reproduce is called a(n)...
- A.
Mutation
- B.
Selection
- C.
Adaptation
- D.
Variation
- 16.How does natural selection lead to evolution?
- A.
Stronger offspring kill weaker members of the species.
- B.
Helpful variations accumulate among surviving members of the species.
- C.
Overproduction provides food for stronger members of the species.
- D.
Environmental changes favor weaker members of the species.
- 17.Observations that deal with descriptions that cannot be expressed in numbers are called...
- A.
Manipulated observations.
- B.
Quantitative observations.
- C.
Qualitative observations.
- D.
Operational observations.
- 18.The gradual change in a species over time is called...
- A.
Mutation.
- B.
Evolution.
- C.
Migration.
- D.
Variation.
- 19.Which of the following is a valid reason why a scientist might reject a scientific theory?
- A.
Some people disagree with it.
- B.
It covers too broad a topic.
- C.
New evidence contradicts it.
- D.
It is too old.
- 20.What is the goal of technology?
- A.
To produce and deliver cereal.
- B.
To understand how the natural world functions.
- C.
To study the natural world.
- D.
To improve the way people live.
- 21.One useful tool that may help a scientist interpret data by revealing unexpected patterns is a ....
- A.
Variable.
- B.
Graph.
- C.
Theory.
- D.
Law.
- 22.Why do scientists organize living things into groups?
- A.
So they can find them in the wild more easily.
- B.
So that the organisms are easier to study.
- C.
So they can make sense of the variety of rocks on Earth.
- D.
So products from living things can be easily found in groceries.
- 23.What theory proposes that species evolve during short periods of rapid change?
- A.
Gradualism
- B.
Evolution
- C.
Absolute dating
- D.
Punctuated equilibrium
- 24.What happens during cytokinesis in animal cells?
- A.
A new round of mitosis begins.
- B.
Two new daughter cells are formed.
- C.
Each organelle divides into two parts.
- D.
A cell plate forms in the middle of the cell.
- 25.Which domain(s) include(s) only prokaryotes?
- A.
Bacteria and Archaea
- B.
Bacteria only
- C.
Archaea only
- D.
Eukarya only
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