chapter 2 cell as a unit of life

What is cell ?

• Living organism

• A brick

• Basic unit of life

• component that combine together to form an organ

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

Cells can undergo x process to form new cells and replace damaged cells. What is x ?

• respiration

• Division

• photosynthesis

• Homeostasis

What are the components that exist in animal cells ?

• Nucleus, cytoplasm, mitochondria, cell membrane

• Cell membrane, cell wall, cytoplasm, mitochondria

• Chloroplast, nucleus, cell wall, mitochondria

• Mitochondria, vacuole, cell membrane, nucleus

Tags

NGSS.MS-LS1-2

Which of the following statements is correct ?

• Animal cells has vacuole

• Plant cells didn't have cell membrane

• Chloroplast exist in plant cells

• Nucleus only exist in animal cells

Which of the following is the function of mitochondria ?

• Medium where chemical reactions occur

• Controls the flow of material in and out of the cell

• Produces energy for reactions

• Absorbs light energy for the process of photosynthesis

Which of the following components in cell controls all activities in the cell and contains chromosomes consisting of DNA ?

• Cell membrane

• Nucleus

• Mitochondria

• Cell wall

Tags

NGSS.MS-LS1-2

Which of the following are the unicellular organisms ? (answer can be more than one)

• Paramecium

• Amoeba

• Hydra

• Euglena

• Spirogyra

What is the function of Epithelium cell ?

• Send information (impulse)

• Protects the surface layer of the skin and internal organs

• Transport oxygen

• Destroy bacteria

What is the function of Guard cells ?

• Reduces the water loss and enable the gaseous exchange

• Control the size of the stoma (leaf pore)

• Contain a large amount of chloroplasts for photosynthesis

• Absorb water and mineral salts from the soil

Chloroplast located in the y to carry out photosynthesis. What is y ?

• Palisade cell

• Guard cell

• Root hair cell

• Epidermal cell