UNIT 6 The Human Body Unit Exam.dochuman body

7/30/2019 UNIT 6 The Human Body Unit Exam.dochuman body

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Name:_________________________Date:__________________________

Homeroom:____________________

The Human Body UnitExam

The questions on this test measureyour knowledge and understandingof science. The test has two parts: Part I(multiple choice questions) and Part2 (short answer questions).

Please answer all questions in thistest booklet.After you have finished all questionsin both parts, fill in the circles foryour answers to Part 1 on theprovided answer sheet.

1. Nutrients from digested food enter

the blood stream through theprocess of (1) absorption (3)respiration(2) elimination (4) secretion

2. The kidneys, which removedissolved wastes from the blood, areorgans of the(1) endocrine system (3) skeletalsystem

(2) excretory system (4) nervoussystem

3. Which two systems of a rabbit’sbody must be working together forthe rabbit to run away from a fox?(1) digestive and endocrine(2) reproductive and nervous

(3) muscular and skeletal(4) excretory and respiratory

4. In which process is oxygen usedto release the energy stored in food?

(1) photosynthesis (3) digestion(2) respiration (4)reproduction

5. Fats are important nutrientsbecause they(1) provide genetic information(2) contain stored energy(3) are used in photosynthesis(4) maintain bone density

Points Earned =out of 46

Converted Percentage Grade =%

State Exam Equivalent =

6. When a person breathes, thelungs absorb oxygen, which is usedby cells to carry out theprocess of (1) respiration (3)photosynthesis(2) secretion (4) excretion

7. Running is an activity that causesthe cells in the muscular system touse oxygen at a faster rate. Which

system responds by delivering moreoxygen to these cells?(1) digestive (3)circulatory(2) nervous (4) endocrine

8. Which human body systems aredirectly involved in reflex actions,

The Human Body Unit Exam of 9



such as knee jerk, blinking, and jumping when startled?(1) circulatory and respiratory(2) digestive and excretory(3) nervous and muscular

(4) reproductive and skeletal

9. In which human body system arehormones produced?(1) respiratory (3) nervous(2) endocrine (4) digestive

10. When do organs begin todevelop in humans?(1) in the sperm cell before

fertilization(2) before fertilization and after birth(3) in the egg cell after fertilization(4) after fertilization and before birth

11. Which body system isresponsible for the elimination of liquid and gaseous wastes?(1) nervous (3) excretory(2) skeletal (4) digestive12. Which factor has the least effect

on a person’s metabolism?(1) exercise (3)intelligence(2) hormones (4) diet

13. What is the main function of thecirculatorysystem?(1) secrete enzymes (3) producehormones(2) digest proteins (4) transport

materials

14. Infectious diseases are causedby(1) allergies(2) vitamin deficiencies(3) chemical spills(4) microorganisms

15. The diagram below represents amagnified view of an air sac in thehuman lung. The white arrowsindicate blood flow.

Which two systems are interacting inthis diagram?

(1) skeletal and muscular(2) nervous and endocrine(3) reproductive and digestive(4) respiratory and circulatory

16. The energy obtained from food ismeasured in units called(1) watts (3) degrees(2) Calories (4) pounds

17. The diagram below shows ahuman body system.




What are two of the functionsperformed by this body system?(1) protects and supports the body(2) produces and transports oxygen(3) produces and excretes waste

products(4) controls and coordinates bodyactivities

18. The main function of the humandigestive system is to(1) break down foods for absorptioninto blood(2) exchange oxygen and carbondioxide in the lungs(3) release energy from sugars within

the cells(4) carry nutrients to all parts of thebody

19. Which sequence lists the levelsof organization in the human bodyfrom simplest to most complex?(1) organ system → tissue → cell → organ

(2) tissue → cell → organ → organ system

(3) organ → organ system → tissue → cell(4) cell → tissue → organ → organ system

20. Which three systems of thehuman body function together tomove and control body parts?(1) nervous, skeletal, and muscular(2) muscular, endocrine, andexcretory(3) digestive, excretory, andreproductive(4) circulatory, endocrine, andrespiratory

21. The labeled organs in thediagram below are part of whichhuman body system?

(1) respiratory (3) digestive(2) endocrine (4)circulatory

22. The diagram below shows ahuman arm bending at the elbow.

Which two body systems mostdirectly cause the arm to bend?(1) skeletal and muscular(2) reproductive and endocrine(3) respiratory and excretory(4) nervous and digestive

23. What is the result of cellularrespiration?(1) Energy for cell processes isreleased.(2) Oxygen is released forphotosynthesis.(3) Cells undergo decomposition.




(4) Nutrients are excreted to preventthe buildup of body fat.24. Compared to the amount of hereditaryinformation in a human body cell, how much

hereditary information is contained in a human

sex cell?(1) one-quarter the amount

(2) one-half the amount

(3) the same amount(4) twice the amount

25. Which term describes an organism’s

ability to maintain a stable internalenvironment?

(1) reproduction

(2) extinction

(3) locomotion(4) regulation

26. In animal skin tissue, celldivision is responsible for(1) growth and repair(2) sexual reproduction(3) obtaining energy(4) production of sex cells

27. Which unit is used to indicate theamount of energy in food?(1) ounce (3) calorie(2) degree (4) gram

28. The diagram below showschanges that a butterfly undergoesas it develops from an egg into anadult.

Which process is illustrated in thediagram?(1) mutation (3)germination(2) photosynthesis (4)metamorphosis




29. The table below shows the symptoms of some diseases that are causedby bacteria.

Disease Symptoms

botulismvomiting, abdominal pain, coughing, muscular

weakness, visual disturbance

pneumoniainflammation of lungs, fever, shortness of breath,fluid in lungs

typhoid fever red rashes, high fever, intestinal bleeding

tetanus uncontrolled contractions of voluntary muscles

Which two diseases listed in the table affect the digestive system?(1) botulism and typhoid fever (3) tetanus and pneumonia(2) botulism and pneumonia (4) tetanus and typhoid fever

30. In humans, a fertilized egg contains 46 chromosomes. Which bar graph

best represents the number of chromosomes contained in the sperm andegg before they united to make the fertilizedegg?

Base your answers to questions 31 and 32 on the diagram belowand on your knowledge of science. The diagram shows four stagesin the development of a human after fertilization.

31. Between stages A and D, which process must occur?(1) mutation (3) cell division(2) sexual reproduction (4) extinction

32. Which sequence of development is correct?(1) fertilized egg →tissues →organ systems →organs(2) fertilized egg →organ systems →organs →tissues




(3) fertilized egg →organs →tissues →organ systems

(4) fertilized egg →tissues →organs →organ systems

Part 2: Answer all questions in this test booklet.

33. The two human body systems shown below interact to perform severalfunctions for the whole organism. Describe how gas exchange occurs whenthe circulatory and respiratory systems work together. [2]

__________________________________________________________ __________________________________________________________ __________________________________________________________

Base your answers to questions 34 and 35 on the chart below andon your knowledge of science. Each food in the chart is aparticularly good source of the nutrient listed.

Nutrient FoodSource

protein fish

carbohydrate orange juice

fat olive oil

34. Which nutrient listed in the chart is primarily responsible for growth andrepair in the human body? [1]

_________________________________________________________




35. Which food source listed in the chart would provide a quick source of energy for the cells of the body? [1]

_________________________________________________________

Base your answers to questions 36 and 37 on the diagrams below,which show a system in a human and a system in a plant.

36. Select one structure labeled in the human system above and explainhow it contributes to the way the human system functions. [1]Human Structure:

_______________________________________________ Explanation:

__________________________________________________ __________________________________________________________ __________________________________________________________

37. Select one structure labeled in the plant system above and explain howit contributes to the way the organism functions. [1]Plant Structure:

_______________________________________________ Explanation:

__________________________________________________ __________________________________________________________ __________________________________________________________




38. The diagram below shows several organs in the human digestive system.

Explain two ways that food is changed as it passes through the digestivesystem. [2](1)

________________________________________________________

(2) ________________________________________________________

Base your answers to questions 39 through 41 on the informationbelow and on your knowledge of science.

Maintaining a constant body temperature, no matter what thetemperature of its surroundings, is a condition that needs to bebalanced in many organisms. This ability is important to theorganism’s survival. These organisms have many different body

structures and behaviors that help maintain a constant bodytemperature.

39. Whales have a thick layer of blubber (fat) under their skin. How does thisblubber help the whales to maintain a constant body temperature? [1]

__________________________________________________________ __________________________________________________________




40. Humans sweat when they are in the hot sun. How does sweating helphumans to maintain a constant body temperature? [1]

__________________________________________________________ __________________________________________________________

41. Foxes living in different parts of the world have different-sized ears. Thearctic fox, which lives in cold climates, has small ears. The desert fox, whichlives in hot climates, has large ears. How does ear size help each of thesefoxes to maintain a constant body temperature? [1]

__________________________________________________________ __________________________________________________________

42. Humans have several organ systems that allow them to carry on all life

activities. Complete the chart below by identifying one organ system that isresponsible for each life activity listed. The first row has been completed asan example. [3]

Life Activity HumanOrganSystem

breaking down large food molecules into smaller

moleculesdigestive system

exchanging gases between the blood and the

environment

removing liquid and gaseous wastes from the

bodytransporting needed materials to the cells and

carrying wastes away from cells

producing offspring

moving the body


UNIT 6 The Human Body Unit Exam.dochuman body

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