Science 5A Unit 4 : Cells

True or False: Cells come in different shapes and sizes.

• True

• False

contract and relax to allow us to move our body.

• Muscle cells

• Skin Cells

• Bone cells

a barrier that prevents harmful substances from entering our body.

• Skin cells

• Nerve cells

• Muscle cells

carry oxygen from our lungs to other parts of our body

• white blood cells

• red blood cells

• Gamete cells

protect our body against diseases

• Bone cells

• Skin cells

• white blood cells

give our body shape and allow us to move

• muscle cells

• bone cells

• nerve cells

___________ cells are needed in reproduction.

• Gamete

• Guard

• Nerve

They control the size of openings that are largely found on the underside of leaves.

• Guard cells

• Xylem cells

_______ are stacked together to form a hollow, continues tube that runs from the roots to the leaves and other parts of the plant.

• Root hair cells

• Xylem cells

• Mesophyll cells

_____________ traps light energy from the Sun, enabling the plant to make food.

• phloem

• stomata

• chlorophyll