Unit 1 SA

The nucleus is a round, double-walled structure often found in the center of both plant and animal cells. Its function is to -

• purify water.

• store fat.

• generate cytoplasm.

• contain genetic material.

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NGSS.MS-LS1-2

NGSS.MS-LS3-1

Students are looking at various plant and animal cell slides during a lab investigation. Two unlabeled slides are viewed under a microscope. The visible organelles are listed in the table.

Based on that information, how should these slides be labeled AND what evidence could be used to support the answer?

Read the question carefully and enter your answer in the box.

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NGSS.MS-LS1-1

NGSS.MS-LS1-2

Plant cells have a strong, rigid outer layer known as the cell wall. The function of the cell wall is to -

• provide structural support and protection.

• convert energy from sunlight into chemical energy.

• regulate the transfer of material in and out of the cell.

• separate genetic material from the rest of the cell.

Tags

NGSS.MS-LS1-2

Plant cells have large, round vacuoles the primarily use for -

• energy production.

• water storage.

• protein synthesis.

• waste removal.

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NGSS.MS-LS1-2

What function in plant cells is comparable to an animal eating food?

• Chloroplasts absorb solar energy for cellular activities.

• Nuclei direct cellular activity from information held in DNA.

• Vacuoles storing wastes, protecting the rest of the cell from contamination.

• Cell walls provide rigidity and support for the cell structure.

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NGSS.MS-LS1-6

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In the 1800s two scientists, Theodor Schwann and Matthias Schleiden, studied different types of organisms. After many years of studying a great variety of organisms, they drew similar but independent conclusions about their observations.

Schwann studied animals and concluded that all animals are made of cells.

Schleiden studied plants and concluded that all plants are made of cells.

What statement was developed most directly from these conclusions and is part of the modern cell theory?

• The functions of living things occur in cells.

• Cells exist only in multicellular organisms.

• Living things are composed of cells.

• Cells contain heredity information.

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NGSS.MS-LS1-1

Cells require a thick, jelly-like substance that holds organelles in place inside the cell. This substance is known as -

• chlorophyll.

• DNA.

• mitochondria.

• cytoplasm.

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NGSS.MS-LS1-2

This is a diagram of a plant cell. What organelle is shown in the enlargement?

• cytoplasm

• chloroplast

• mitochondria

• nucleus

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NGSS.MS-LS1-2

What function of the organelle shown in the enlargement supports your identification of the organelle?

• provide support for the cell

• direct all the cell's activities

• use energy from sunlight to make sugar

• regulate substances that enter and exit the cell

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NGSS.MS-LS1-2

NGSS.MS-LS1-6

Which of the following terms does Row Z of the diagram represent?

• Cells

• Organs

• Tissues

• Organ Systems

Tags

NGSS.MS-LS1-3