End of Year Review 7th grade science

What level of organization is the brain?

• Cell

• Organ

• Organ system

• Tissue

Human liver and muscle cells require a great deal of energy. Which cell organelles would be expected to appear in large numbers as a result?

• Nuclei

• Ribosomes

• Vacuoles

• Mitochondria

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Which statement about organs is TRUE?

• An organ is made up of systems.

• An organ is the basic unit of a cell.

• An organ is more complex than a tissue.

• An organ is more complex than an organism.

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When a person’s body becomes infected by a virus, white blood cells in the blood produce specialized immune cells that help fight the virus and protect the body from infections it can cause. The specialized immune cells are circulated throughout the body to reach areas that require an immune response. Which two body systems interact to protect an individual from a virus?

• Respiratory and nervous

• Circulatory and respiratory

• Skeletal and immune

• Circulatory and immune

Cells require oxygen. Which systems work together to supply animal cells with oxygen?

• Circulatory system, Respiratory system

• Lymphatic system, Immune system

• Digestive system, Excretory system

• Nervous system, Integumentary system

Where is the genetic material of an animal cell stored?

• Nucleus

• Vacuole

• Ribosome

• Mitochondria

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Dr. Williams has a patient who is suffering from kidney failure due to diabetes. What is the effect on the patient's body as a result?

• The immune system's failure would lead to toxins being distributed to the body by the excretory system resulting in damage to the other systems of the body.

• The excretory system's failure would lead to toxins being distributed to the body by the circulatory system resulting in damage to the other systems of the body.

• The digestive system's failure would lead to toxins being distributed to the body by the respiratory system resulting in damage to the other systems of the body.

• The nervous system's failure would lead to toxins being distributed to the body by the integumentary system resulting in damage to the other systems of the body.

The job of the human heart is to circulate blood through all of the body's arteries, capillaries, and veins. The job of the human lungs is to supply the small amount of blood in them with oxygen. What is the result of the interaction between these two body systems?

• They turn the protein in blood into food energy for the digestive system.

• Oxygen-filled blood circulates throughout the body

• Food energy breaks down, and turns it into heat.

• Old blood is removed from the body.

If you wanted to prevent a plant cell from producing sugar, which organelle should be destroyed?

• Lysosome; because it breaks down waste in the cell

• Nucleus; because it stores the DNA

• Golgi body; because it distributes proteins

• Chloroplast; because it makes food for the cell

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What is another name for an oak tree that is capable of making its own energy using photosynthesis?

• Heterotroph

• Respiration

• Transformation

• Autotroph

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