9th grade Science practice sheet
Alabama Course of Study · from Gradelings · Name: ______________________
Question 1
Which cells have a nucleus and membrane-bound organelles?
- All viruses
- Eukaryotic cells
- Bacteria
- Prokaryotic cells
Eukaryotic cells
Hint: Eu = true nucleus.
Question 2
The building blocks of nucleic acids are…
- monosaccharides
- glycerol
- amino acids
- nucleotides
nucleotides
Hint: Sugar, phosphate, base.
Question 3
Making an RNA copy of a gene is called…
- translation
- mutation
- replication
- transcription
transcription
Hint: Writing a transcript.
Question 4
Put the stages of cell division in order, earliest first.
- ➖Metaphase: chromosomes line up
- ↔️Anaphase: chromosomes pull apart
- 🔬Prophase: chromosomes condense
- 🧬Interphase: DNA is copied
Interphase: DNA is copied → Prophase: chromosomes condense → Metaphase: chromosomes line up → Anaphase: chromosomes pull apart
Hint: Interphase: the cell grows and copies its DNA. Prophase: chromosomes become visible. Metaphase: they line up. Anaphase: they are pulled apart. Telophase: two nuclei form. Then the cell splits.
Question 5
Which two systems work together to regulate the body with nerves and hormones?
- Digestive and skeletal
- Muscular and integumentary
- Nervous and endocrine
- Respiratory and excretory
Nervous and endocrine
Hint: Fast and slow signals.
Question 6
Which is an energy transformation in photosynthesis?
- chemical energy to light energy
- kinetic energy to light energy
- thermal energy to sound energy
- light energy to chemical energy
light energy to chemical energy
Hint: The energy is stored in the chemical bonds of glucose.
Question 7
Most of Earth's free nitrogen is N₂ gas in the…
- living things
- oceans
- rocks
- atmosphere
atmosphere
Hint: About 78% of air.
Question 8
A carrier mother (XᴮXᵇ) and an unaffected father (XᴮY). What fraction of sons are expected to be color-blind?
- all
- 1/2
- 1/4
- 0
1/2
Hint: Sons get the mother's X.
Question 9
What is the role of the ovary in a flower?
- It makes pollen.
- It attracts pollinators.
- It holds the ovules, which may become seeds.
- It holds the flower up.
It holds the ovules, which may become seeds.
Hint: After fertilization, the ovary can become a fruit that protects the seeds.
Question 10
Similar DNA and protein sequences between species are…
- behaviors
- analogous structures
- fossils
- molecular homologies
molecular homologies
Hint: Shared code.
Answer key
- 1. Eukaryotic cells (Cell Types, Transport & Specialization)
- 2. nucleotides (Biomolecules & Enzymes)
- 3. transcription (DNA, RNA & Proteins)
- 4. Interphase: DNA is copied → Prophase: chromosomes condense → Metaphase: chromosomes line up → Anaphase: chromosomes pull apart (Cells from Cells)
- 5. Nervous and endocrine (Systems in Animals & Plants)
- 6. light energy to chemical energy (Photosynthesis & Respiration)
- 7. atmosphere (Carbon & Nitrogen Cycles)
- 8. 1/2 (Genetic Crosses)
- 9. It holds the ovules, which may become seeds. (Reproduction)
- 10. molecular homologies (Evidence & Mechanisms of Evolution)
Want more than 10 questions?
In Gradelings the questions change every time and adjust to your child, with hints and kind feedback. See all science units.