When a child runs inside after hearing a car crash outside, the child is using:

• the central nervous system, only

• the peripheral nervous system, only

• both the central and peripheral nervous systems

• neither the central nor the peripheral nervous system

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NGSS.MS-LS1-8

The peripheral nervous system consists of the

• neurons located in the brain and the spinal cord

• nerves that extend from the brain and the spinal cord

• interneurons of the central nervous system

• portions of the brain known as the medulla and cerebellum

what is the strongest bone in your body

• femur

• mandable

• unal

• raidus

Which are the main structures of every cell? Remember you must select more than one option.

• Cell membrane

• Cell wall

• Nucleus

• DNA

• Cytoplasm

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Mention one difference between plant and animal cells.

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NGSS.MS-LS1-2

The organelle in charge of transforming the energy of the sunlight into chemical energy (glucose)?

• Mitochondria

• Golgi bodies

• Chloroplast

• Nucleus

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NGSS.MS-LS1-6

A clownfish and a sea anemone are in a close relationship. The sea anemone provides shelter and protection for the clownfish. However, the sea anemone is not harmed. This is an example of ______________________.

• Commensalism

• Parasitism

• Mutualism

• Predator and prey

Tags

NGSS.MS-LS2-2

Look at the following picture, identify if it's a balanced or unbalanced force situation, both forces have a magnitude of 25 N but in opposite directions. Explain your answer.

Tags

NGSS.3-PS2-1

Red-billed oxpeckers are birds that feed on parasites found on an impala. The impala gets rid of parasites and the red-billed oxpeckers get a yummy dinner. What is the type of symbiosis and why?

Tags

NGSS.MS-LS2-2

A wrasse fish feeds on the parasites found on the black sea bass's body. Both species benefit.

• Mutualism

• Commensalism

• Parasitism

Tags

NGSS.MS-LS2-2