TEAS Science: Biology and Life Science 3 — Questions and Answers
Question 1: Which process do plant cells use to convert carbon dioxide and water into glucose using light energy?
- Cellular respiration
- Fermentation
- Photosynthesis (Correct answer)
- Transpiration
Correct answer: Photosynthesis
Photosynthesis converts CO2 and water into glucose using light energy.
Question 2: What is the basic structural and functional unit of all living organisms?
- Tissue
- Organ
- Cell (Correct answer)
- Molecule
Correct answer: Cell
The cell is the smallest unit capable of carrying out life functions.
Question 3: Which structure controls what enters and exits an animal cell?
- Cell wall
- Cell membrane (Correct answer)
- Nucleolus
- Vacuole
Correct answer: Cell membrane
The selectively permeable cell membrane regulates movement in and out of the cell.
Question 4: The movement of water across a semipermeable membrane from low to high solute concentration is called what?
- Diffusion
- Osmosis (Correct answer)
- Active transport
- Endocytosis
Correct answer: Osmosis
Osmosis is the diffusion of water across a semipermeable membrane.
Question 5: How many chromosomes are typically found in a normal human body (somatic) cell?
- 23
- 46 (Correct answer)
- 44
- 92
Correct answer: 46
Human somatic cells normally contain 46 chromosomes in 23 pairs.
Question 6: Which part of the cell contains the genetic material in a eukaryotic cell?
- Cytoplasm
- Nucleus (Correct answer)
- Ribosome
- Mitochondrion
Correct answer: Nucleus
The nucleus houses the cell's DNA in eukaryotes.
Question 7: What type of macromolecule are enzymes primarily made of?
- Lipids
- Carbohydrates
- Proteins (Correct answer)
- Nucleic acids
Correct answer: Proteins
Most enzymes are proteins folded into specific shapes for catalysis.
TEAS Science: Biology and Life Science 3
Which process do plant cells use to convert carbon dioxide and water into glucose using light energy?