During a trip to the beach, Allen finds a colony of sea anemones on a rock. These sea anemones are green and get their color from tiny single-celled algae that live in their tissues. The algae produce food for the anemones while the anemones provide a place for the algae to live.

A drawing of a mobile form of the single-celled green algae is shown below.

Which of these structures help this algae move?

During a trip to the beach, Allen finds a colony of sea anemones on a rock. These sea anemones are green and get their color from tiny single-celled algae that live in their tissues. The algae produce food for the anemones while the anemones provide a place for the algae to live.

Which parts of the single-celled algae are responsible for capturing energy?

Most organisms need oxygen for their cells to function normally. In mammals, two organ systems work together to move oxygen throughout the body.

Which of these organelles use oxygen to release energy?

Most organisms need oxygen for their cells to function normally. In mammals, two organ systems work together to move oxygen throughout the body.

The respiratory system brings oxygen into the body from the environment. Which of these body systems is directly involved in the delivery of oxygen to the major organs of the human body?

Which of these is an example of homeostasis in a multicellular organism?

How do living systems control the movement of materials into and out of cells?

In your response, be sure to

• identify the cell structures and body systems involved
• describe the functions of the cell structures and body systems involved
• identify and describe the processes responsible for the movement of materials into and out of cells

Write your answer in your Answer Book.

A student observes a unicellular organism under a microscope. After a while, the organism begins to split into two cells, as shown in the diagram.

Which of these best describes the process shown in the diagram?

A student observes a unicellular organism under a microscope. After a while, the organism begins to split into two cells, as shown in the diagram.

Which of these structures does the organism shown above use to move itself?

The pine tree and the blue jay, shown below, both have internal structures that help transport fluids containing dissolved materials within their tissues.

Compare and contrast the transport systems of the pine tree and the blue jay. In your response, be sure to

• identify the type of transport system used by each organism
• describe the types of dissolved materials transported within each organism and exchanged with its environment
• explain why the pine tree and the blue jay need specialized transport systems

Write your answer in your Answer Book.

Which cell structure contains molecules that direct cell activities?

Read the decription of the experiment and use the table of results below to answer the following question.

A student designed an experiment to see if plants grow better when watered with a sugar solution. He divided the plants into six groups, measured the initial height of each plant, and calculated the average height for each group. Once a week for two months, he watered the plants in each group using a different sugar solution for each plant group. At the end of two months, he measured the final height of each plant and calculated the average height for each group. The student’s data are shown in the table below.

Which of these structures transport water throughout the plant?

Use the information and the diagram below to answer the following question.

Part of the process of protein synthesis is shown below. The different structures in this process are numbered 1 through 5.

Structure 2 in the diagram represents a

Use the information and the diagram below to answer the following question.

Part of the process of protein synthesis is shown below. The different structures in this process are numbered 1 through 5.

The process shown in the diagram occurs in the

Use the information and the diagram below to answer the following question.

Part of the process of protein synthesis is shown below. The different structures in this process are numbered 1 through 5.

Structure 1 is produced in what part of the cell?

Some cells have many short, hairlike structures on their surfaces. These structures are used mainly for

Use the information below to answer the following question.

A particular toxin prevents cellular production of usable energy. Cells that are affected by this toxin are unable to carry out many of their normal functions.

Which of these organelles would be most directly harmed by this toxin?

Use the information below to answer the following question.

A particular toxin prevents cellular production of usable energy. Cells that are affected by this toxin are unable to carry out many of their normal functions.

If cells were exposed to this toxin, which of these processes would probably be least affected?

The human body functions properly when organ systems work together. Which organ system works with the muscular system to control muscle contraction?

Use the information and the diagram below to answer Numbers 24 through 26.

Use the information and the diagram below to answer the following item.

Squid are marine animals that have a complete circulatory system and reproduce sexually. A diagram of a squid is shown below.

Which of these transports nutrients to the cells of a squid?

Use the information and the diagram below to answer the following item.

Squid are marine animals that have a complete circulatory system and reproduce sexually. A diagram of a squid is shown below.

Which of these is not a purpose of a squid’s sensory organs?

Use the information and the diagram below to answer the following item.

Squid are marine animals that have a complete circulatory system and reproduce sexually. A diagram of a squid is shown below.

What organ system controls the movement of the squid’s tentacles?

Nutrients taken in by the body are broken down during cell processes. Some products of these cell processes can be harmful if not removed from the body.

Describe how harmful waste products are removed from the body. In your response, be sure to

• identify the parts of a cell that are involved in waste removal
• identify the body systems involved in the removal of waste products
• explain how the body systems work together to remove waste from the body

Write your answer in your Answer Book.

Use the information below to answer Numbers 35 and 36.

Use the information below to answer the following item.

Hummingbirds need large amounts of energy to flap their wings between 60 and 200 times per second. Their wings beat so rapidly that it is difficult to see them move. They often appear suspended in air for extended periods of time without changing their location. Hummingbirds have long bills and grooved tongues to reach into flowers to feed on flower nectar. They also feed on insects.

The body system most directly interacting with the skeletal system to enable hummingbirds to beat their wings between 60 and 200 times per second is the