Science & Chemistry
What is the study of life called?
Biology
What structure controls what enters and leaves the cell?
Cell membrane
What science is used to name and classify organisms?
Taxonomy
What is the main function of the digestive system?
To break down food and absorb nutrients
What is the part of Earth where life exists called?
Biosphere
What is a possible explanation for an observation called?
Hypothesis
What organelle contains DNA and controls cell activities?
Nucleus
What is the two-word scientific naming system called?
Binomial nomenclature
Where does most nutrient absorption occur?
Small intestine
What is a group of organisms of the same species living in one area called?
Population
What is the smallest unit of an element?
Atom
What organelle produces most of the cell's ATP?
Mitochondria
What is the largest taxonomic category?
Domain
What is the main function of the respiratory system?
Gas exchange
What role do producers play in an ecosystem?
They make their own food
What type of bond involves sharing electrons?
Covalent bond
What organelle is responsible for protein synthesis?
Ribosomes
Which category is more specific: family or genus?
Genus
What tiny air sacs in the lungs are the main site of gas exchange?
Alveoli
What is the difference between a food chain and a food web?
A food chain shows one pathway; a food web shows interconnected pathways
What are enzymes, and what is their main function?
Proteins that speed up chemical reactions
Name two structures found in plant cells but not animal cells.
Cell wall and chloroplasts
Why do scientists classify organisms?
To organize organisms
How do the digestive and respiratory systems help cells release energy from food?
The digestive system provides nutrients/glucose, while the respiratory system provides oxygen for cellular respiration
What happens to the amount of available energy as you move up a food chain?
It decreases