Unit 7: Immune system

Lesson 7.1: Body systems and homeostasis

Multiple Choice and True/False Questions: Formative Assessment #1

Benchmarks: 9.4.1.1.2, NGSS: HS-LS1-2, NGSS: HS-LS1-3

Learning Targets:

• I can explain how organs and organ systems work together to maintain homeostasis.
• I can give describe how organisms have a hierarchical structure
• I can give an example how positive and/or negative feedback works.

___1. Put the following terms in correct hierarchical order from smallest to biggest

        a. cell, organ, tissue, organ system

        b. organ system, tissue, organ, cell

        c. cell, tissue, organ, organ system

        d. cell, tissue, organ system, organ

___2. Tissue refers to…

        a. a group a similar cells working together to perform a common function

        b. a group of different cells working together to perform a common function

        c. a group a similar cells working together to perform different functions

        d. a group a different cells working together to perform different functions

___3. The four categories of tissues are:

        a. blood, fat, muscle, and bone

        b. nervous, epithelial, connective, muscle

        c. muscle, bone, fat, nervous

        d. connective, epithelial, digestive, muscle

___4. Connective tissue includes:

        a. skin, muscle, bone, blood

        b. fat, bone, cartilage, blood

        c. bone, nerves, fat, skin

        d. muscle, fat, nerves, bone

___5. Homeostasis refers to…

        a. maintaining a variable external environment

b. maintaining a constant external environment

c. maintaining a variable internal environment

d. maintaining a constant internal environment

___6. True or false: Negative feedback is a response to a stimulus that keeps the variable close to the normal value

___7. True or false: Contractions during childbirth are an example of positive feedback.

Matching

Match the body system with its correct function

___1. Skeletal system                a. absorb nutrients from food and remove wastes

___2. Muscular system                b. regulates temperature, metabolism and homeostasis using hormones

___3. Cardiovascular system        c. transports nutrients, wastes, hormones and gases

___4. Digestive system                d. protects and supports body and organs; produces blood cells

___5. Excretory system                e. moves air into and out of lungs; controls gas exchange

___6. Nervous system                f. removes wastes from blood and regulates concentration of body fluids

___7. Immune system                g. provides structure and supports; moves the body

___8. Reproductive system        h. regulates behavior and controls sense and movement

___9. Integumentary system        i. protects against injury, infection and fluid loss

___10. Respiratory system                 j. produces gametes and offspring

___11. Endocrine system                k. defends against pathogens and disease

Short answer

1. When a person’s oxygen levels start to decrease, respiration will increase until normal oxygen levels are attained. Is this an example of negative or positive feedback? Explain.

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2. A parking lot is covered with snow on a sunny day with the exception of one small patch of exposed tar. What would you expect would happen to the patch of exposed tar throughout the sunny day and why? Is this an example of positive or negative feedback?

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