TASC Science 2 — Questions and Answers
Question 1: Which organelle is responsible for converting glucose into usable energy (ATP) in a cell?
- Mitochondria (Correct answer)
- Nucleus
- Ribosome
- Golgi apparatus
Correct answer: Mitochondria
Mitochondria carry out cellular respiration, producing ATP from glucose and oxygen.
Question 2: In a food chain, organisms that make their own food using sunlight are called what?
- Producers (Correct answer)
- Consumers
- Decomposers
- Predators
Correct answer: Producers
Producers, such as plants, make their own food through photosynthesis.
Question 3: What gas do plants take in from the air during photosynthesis?
- Carbon dioxide (Correct answer)
- Oxygen
- Nitrogen
- Hydrogen
Correct answer: Carbon dioxide
Plants absorb carbon dioxide and release oxygen during photosynthesis.
Question 4: A trait controlled by a dominant allele will appear in an organism if the organism has how many copies of that allele?
- At least one (Correct answer)
- Exactly two
- Zero
- Exactly three
Correct answer: At least one
A dominant trait is expressed when at least one dominant allele is present.
Question 5: Which body system is responsible for transporting oxygen and nutrients to cells throughout the body?
- Circulatory system (Correct answer)
- Digestive system
- Nervous system
- Skeletal system
Correct answer: Circulatory system
The circulatory system uses blood vessels and the heart to deliver oxygen and nutrients.
Question 6: What is the smallest unit of life capable of carrying out all life processes?
- Cell (Correct answer)
- Atom
- Tissue
- Organ
Correct answer: Cell
The cell is the basic structural and functional unit of all living things.
Question 7: During which process do organisms release energy by breaking down food in the presence of oxygen?
- Cellular respiration (Correct answer)
- Photosynthesis
- Digestion only
- Fermentation
Correct answer: Cellular respiration
Cellular respiration breaks down glucose with oxygen to release energy as ATP.
TASC Science 2
Which organelle is responsible for converting glucose into usable energy (ATP) in a cell?