Unit 1 Review 7th Grade

Living organisms are made up of cells. Cells are organized at different levels to form very complex living organisms like your body. Each level has a specific role or job to perform.Which of the following lists these levels in the correct order of organization from the simplest to the most complex?

• cells, tissues, organs, organ systems organisms

• organisms, organ systems, organs, tissues, cells

• Tissues, cells, organs, organisms, organ systems

• organs, organ systems, organisms, cells, tissues

All of the following are true Except-

• skin is an organ

• organs are made up of tissues

• each organ is made up of its own kind of tissue

• tissues are made up of cells

What phrase best describes the function of mitochondria?

• Located in the cytoplasm

• bacteria-sized organelle

• Converts energy for cell use

• Contains a folded inner membrane

What types of organisms have cells with very large vacuoles?

• Animals

• Bacteria

• Fungi

• Plants

Which cell organelle stores DNA?

• Cell wall

• Cell membrane

• Vacuole

• Nucleus

Which of the following statements accurately represents the differences in plant and animal cells?

• Only plant cells have a cell wall, chloroplasts, and a large vacuole.

• Only animal cells have a cell wall, chloroplasts and a large vacuole.

• Only plant cells have a cell membrane, mitochondria, and cytoplasm.

• Only animal cells have a cell membrane, mitochondria, and cytoplasm.

The food that you eat travels from your mouth, down your esophagus, into your stomach, and through your small and large intestines before the body rids itself of solid waste. As the food passes through your body, it is digested, and you get important nutrients from the food.

Which of the following is the correct term used to describe a group of body parts working together to perform a specific function?

• An organism

• A tissue

• An organ system

• An organ

Leaves are composed of vascular tissue that brings water in so that ground tissue can conduct photosynthesis. Based on this information, what level of organization describes leaves?

• Tissue

• Organ

• Organ system

• Organism

Plant root tips have a layer of cells that function together to grow rapidly to allow the plant to increase the plant's ability to reach water and stabilize in the ground. Based on this information, what level of organization describes the plant root tips?

• Tissue

• Organ

• Organ System

• Organism

What is a group of similar cells that perform a common function?

• Organisms

• Tissues

• Organs

• Organ Systems