Structure and Function of Cells
What part of the cell controls what enters and exits?
Cell membrane
What gas do plants take in during photosynthesis?
Carbon dioxide
What are the three states of matter?
Solid, liquid, gas
What property describes how a substance reacts when it combines with oxygen to form rust?
chemical property
What type of reaction releases energy, usually in the form of heat or light?
Which organelle is known as the ‘powerhouse’ of the cell?
Mitochondria
What is the process by which animals release energy from food?
Respiration
Which particle in an atom has a positive charge?
Proton
What pH value would you expect for a strong acid like hydrochloric acid?
Less than 7
What type of reaction absorbs energy, often causing a decrease in temperature?
Endothermic
What is the jelly-like substance inside a cell that holds organelles?
Cytoplasm
What do decomposers, like fungi and bacteria, do in an ecosystem?
Break down dead plants and animals
What is the smallest unit of an element?
Atom
What type of material is typically a good conductor of electricity and heat, and is found on the left side of the Periodic Table?
metal
Which metal reacts vigorously with water and can cause an explosion?
Sodium
Which part of a plant cell provides structure and support?
The cell wall
What do we call an animal that eats both plants and other animals in a food chain?
Omnivore
What part of the atom orbits the nucleus?
Electrons
What physical property describes the ability of a material to conduct heat or electricity?
Conductivity
When iron rusts, is this an example of an exothermic or endothermic reaction?
Exothermic
What is the function of ribosomes in a cell?
To make proteins
What is the term for the interconnection of multiple food chains in an ecosystem?
Food web
What is the term for two or more atoms chemically bonded together?
Molecule
What is the term for substances like sodium hydroxide that have a pH greater than 7?
Base
What happens to the temperature of a substance in an endothermic reaction?
The temperature decreases as energy is absorbed