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7th Grade Science Unit Test 4 Review Part III

Test Description: Part III Unit Test 4 Review

Instructions: Answer all questions to get your test result.

1) The nervous system helps the body maintain homeostasis by

Aproviding nutrients to the rest of the body Bbreathing in oxygen through the nose Cregulating and controlling the rest of the human body Dgiving it the blood that it needs

2) Which of the following is where blood cells are made

Aglands Btissue Cnervous system Dbone marrow

3) While hiking on Mt. Rainier, Deepak found that he had to take deeper breaths as he climbed higher. Which reason explains why deeper breaths were needed?

Aoxygen molecules in the air are spread farther apart as altitude increases Bthe hearts beat slower at higher altitudes than at lower altitudes CAs Deepak climbed higher, carbon dioxide concentrations increased DAs Deepak climbed higher a decrease in air pessure made his lungs smaller

4) The central nervous system consists of our

Abrain and lungs Bbrain and spinal cord Cspinal cord and heart Dbrain and heart

5) After dislocating his left elbow, Mr. Harvey had to do which of the following before he could move his elbow like normal?

AScore the most points and become a legend at least in his own mind in the staff vs. student basketball game Bgo to the gym and lift weights to rebuild his Herculean physique Callow time for the healing of soft tissues that support his elbow's movement Dfight and defeat the bear attacked him and caused his elbow's dislocation

6) One function of the human endoskeleton is to

Aproduce lactic acid Bstore nitrogenous wastes Ctransmit impulses Dproduce blood cells

7) The body cells of most multicellular animals are not in direct contact with the external environment. These cells are supplied with material from the environment by

Aa circulatory system Ba central nervous system Chydrolytic enzymes Dsense receptors

8) In humans, gas exchange and gas transport occur as a result of the functioning of a system of

Alungs and blood vessels Bphloem tubes Csetae Dganglia

9) In humans, carbon dioxide that is excreted passes from the blood directly into the

Aalveoli Bliver Ckidneys Dtrachea

10) In humans, which of the following is produced within certain bones

Ared blood cells Bbile Curea Dstriated muscle cells

*select an answer for all questions

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