Life Science (Grade 7) Midterm — Quick Check, Units 1–3
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Free printable Life Science midterm (Grade 7): 10 multiple-choice questions covering Cells, Genetics & Heredity, Evolution & Adaptation. Answer key included — customize it in the Midterm Maker.
Life Science (Grade 7) Midterm — Quick Check, Units 1–3
Name: Date: Period:
Directions: Read each question carefully and choose the best answer.
Covers: Cells · Genetics & Heredity · Evolution & Adaptation
Part 1: Multiple Choice
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In which organelle does photosynthesis take place?
- A. Mitochondrion
- B. Chloroplast
- C. Lysosome
- D. Ribosome
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Which statement is part of the cell theory?
- A. Cells can form from nonliving matter
- B. All cells contain chloroplasts
- C. All living things are made of one or more cells
- D. All organisms are made of many cells
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What is the basic unit of structure and function in all living things?
- A. The cell
- B. The organ
- C. The atom
- D. The tissue
-
What are different forms of the same gene called?
- A. Chromosomes
- B. Proteins
- C. Phenotypes
- D. Alleles
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Which scientist is known as the father of genetics for his work with pea plants?
- A. Charles Darwin
- B. Louis Pasteur
- C. Robert Hooke
- D. Gregor Mendel
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How many chromosomes are in a typical human body cell?
- A. 23
- B. 92
- C. 48
- D. 46
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What is a mutation?
- A. A new species forming overnight
- B. A trait learned during life
- C. A change in an organism's DNA
- D. A type of cell division
-
A human arm, a whale flipper, and a bat wing have similar bones but different uses. What are these called?
- A. Vestigial structures
- B. Analogous structures
- C. Homologous structures
- D. Learned behaviors
-
Why did dark peppered moths become more common near polluted English cities in the 1800s?
- A. Light moths moved to the countryside
- B. Pollution dyed the light moths dark
- C. They were harder for birds to see on soot-darkened trees
- D. Moths chose to change their color
-
What do fossils provide evidence of?
- A. How organisms choose their traits
- B. Weather patterns from last year
- C. The exact age of every living species
- D. Organisms that lived long ago and how life changed
Answer Key — Life Science (Grade 7) Midterm — Quick Check, Units 1–3
- B — Chloroplast Chloroplasts capture light energy to make sugar.
- C — All living things are made of one or more cells Cell theory: all living things are made of cells, and cells come from cells.
- A — The cell Every living thing is made of one or more cells.
- D — Alleles Alleles are versions of a gene, such as T or t.
- D — Gregor Mendel Mendel discovered patterns of inheritance by breeding pea plants.
- D — 46 Human body cells have 23 pairs, or 46 chromosomes.
- C — A change in an organism's DNA Mutations change DNA and can create new variations.
- C — Homologous structures Similar bone structure suggests a common ancestor.
- C — They were harder for birds to see on soot-darkened trees Camouflaged dark moths survived and reproduced more often.
- D — Organisms that lived long ago and how life changed Fossils record past life and changes over long periods.