7th Grade Science Year in Review

Smallest units that make up all living things are

• Cells

• Atoms

• Molecules

• Chemicals

The diagram is representation of a __________ cell.

• Animal

• Plant

• Protozoa

• Amoeba

Three major differences between plant and animals cells include

• Only plant cells contain chloroplasts

• Only plant cells contain a cell wall

• Only plant cells contain a large vacuole

• All of these are major differences

The ______ of a cell contains the DNA and is known as the command center of the cell.

• Mitochondria

• Nucleolus

• Nucleus

• Lysosome

The "power house" of the cell is the

• Mitochondria

• Nucleolus

• Nucleus

• Lysosome

The process where sunlight, water and carbon dioxide are used to create sugar and oxygen in a plant is called

• Cellular respiration

• Photosynthesis

• Cellular transport

• Krebs cycle

The plant cell organelle that is responsible for photosynthesis is the

• Chloroplasts

• Chlorophyll

• Vacuole

• Nucleolus

The diagram is representation of a

• Food pyramid

• Food chain

• Food web

• Feeding relationships

In a food web, the arrows represent the

• symbiotic relationships of organisms

• flow of energy from one organism into another

• feeding relationship between only a few organisms

The picture is representing what relationship among organisms

• Parasitism

• Mutualism

• Commensalism

• Predator-prey