Biomolecules
Which biomolecule is the body's main source of quick energy?
Carbohydrates
What is the main job of an enzyme?
Answer: Speed up chemical reactions
What is the basic unit of life?
Answer: Cell
What is an educated, testable prediction called?
Answer: Hypothesis
What is biology the study of?
Answer: Life / living things
Which biomolecule is used for long-term energy storage and insulation?
Answer: Lipids
What is the molecule that binds to an enzyme called?
Answer: Substrate
What is formed when similar cells work together?
Answer: Tissue
Which variable is purposely changed by the scientist?
Answer: Independent variable
What tool is used to see objects that are too small to see clearly with your eyes?
Answer: Microscope
Which biomolecule group includes enzymes?
Answer: Proteins
What part of an enzyme does the substrate bind to?
Answer: Active site
Put these in order from smallest to largest:
organ, tissue, cell, organ system.
Answer: Cell → Tissue → Organ → Organ System
Which variable is measured during an experiment?
Answer: Dependent variable
What structure is found in every living organism?
C _ _ _ S
Answer: Cells
Which biomolecule stores genetic information in DNA and RNA?
Answer: Nucleic acids
What happens to activation energy when an enzyme is added to a reaction?
Answer: It decreases
What level of organization is made of several organs working together?
Answer: Organ system
What are the factors that are kept the same during an experiment called?
Answer: Constants or controlled variables
What process do plants use to make food using sunlight?
Answer: Photosynthesis
Name all four major biomolecules.
Answer: Carbohydrates, lipids, proteins, and nucleic acids
What is it called when an enzyme changes shape because of extreme temperature or pH and can no longer work properly?
Answer: Denaturation
Put these in order from smallest to largest: ecosystem, organism, biosphere, community, population.
Answer: Organism → Population → Community → Ecosystem → Biosphere
A student gives plants different amounts of sunlight and measures how tall they grow. What is the independent variable?
Answer: Amount of sunlight
Name three characteristics shared by living things.
Answer: Any three: made of cells, use energy, grow and develop, reproduce, respond to stimuli, maintain homeostasis, contain genetic material.