Plant and Animal Cells Review

What is the function of the cell membrane?

• gives the cell its shape

• produces proteins within the cell

• allows water and nutrient to enter and leave the cell

• contains the plant's DNA

Answer explanation

The cell membrane regulates what enters and exits the cell, allowing water and nutrients to pass through while keeping harmful substances out. This is essential for maintaining homeostasis and proper cell function.

Tags

NGSS.MS-LS1-2

Which organelle helps plants maintain their shape, and does not allow the shape to change?

• cell membrane

• chloroplasts

• nucleus

• cell wall

Answer explanation

The cell wall is a rigid structure that surrounds plant cells, providing support and maintaining their shape. Unlike the cell membrane, which is flexible, the cell wall ensures that the plant's shape remains constant.

A microscope is used to view cells because

• cells are constantly moving

• cells are too small to be seen with human eyes

• cells are too large to see all at once

• cells are too dark to be seen without light

Answer explanation

A microscope is essential for viewing cells because they are too small to be seen with the naked eye. The other options do not accurately describe the limitations of human vision regarding cell size.

Which of these includes organelles found in both plant and animal cells?

• cell wall, nucleus, cell membrane

• cell membrane, nucleus, cytoplasm

• cell wall, chloroplasts, nucleus

• cell membrane, nucleus, chloroplasts

Answer explanation

The correct choice is 'cell membrane, nucleus, cytoplasm' as these organelles are present in both plant and animal cells. The cell wall and chloroplasts are exclusive to plant cells.

Tags

NGSS.MS-LS1-2

This organelle is often referred to as the power house of the cell.

• Mitochondria

• Lysosome

• Chloroplast

• Vacuole

Answer explanation

The mitochondria are known as the power house of the cell because they generate ATP, the energy currency of the cell, through cellular respiration. This makes them essential for energy production.

Tags

NGSS.MS-LS1-2

Which organelle is present in both plant and animal cells but is usually much larger in plant cells?

• chloroplasts

• cell wall

• vacuoles

• mitochondria

Answer explanation

Vacuoles are organelles found in both plant and animal cells, but they are typically much larger in plant cells. They serve various functions, including storage and maintaining turgor pressure, which is crucial for plant structure.

What is the function of the cell wall?

• To protect and support the cell.

• To perform differently in each cell.

• To prevent water from passing through.

• To prevent oxygen from entering the cell.

Answer explanation

The cell wall's primary function is to protect and support the cell, providing structural integrity. It does not selectively prevent water or oxygen from entering, making the first choice the correct answer.

Tags

NGSS.MS-LS1-2

What do you call the jelly-like substance that flows throughout the cell?

• mitochondria

• vacuoles

• plasma

• cytoplasm

Answer explanation

The jelly-like substance that flows throughout the cell is called cytoplasm. It fills the cell and holds organelles in place, playing a crucial role in cellular processes.

Tags

NGSS.MS-LS1-2

Tiny structures found inside cells are called:

• protists

• protozoans

• organs

• organelles

Answer explanation

Tiny structures inside cells are called organelles. They perform specific functions necessary for cell survival and operation, distinguishing them from larger structures like organs or organisms.

Tags

NGSS.MS-LS1-2

What contains chlorophyll (green pigment) and uses the sun to make food?

• Mitochondrion

• Vacuole

• Cell Wall

• Chloroplast

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3