Unit 6 Cells

Serena knows that scientists use physical similarities to classify organisms. She studies the figures of four different organisms. Which two organisms should Serena conclude are most closely related?

• 1 and 2

• 1 and 3

• 2 and 3

• 2 and 4

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NGSS.MS-LS4-2

Eukaryotic cells and prokaryotic cells have some parts in common. Which of the following pairs of parts would you find in both types of cells?

• cytoplasm and nucleus

• cell membrane and cytoplasm

• DNA and membrane-bound organelles

• cell membrane and membrane-bound organelles

Cells use energy to carry out various cell processes. Which of the following molecules stores energy for the cell to use?

• ATP

• DNA

• water

• chloroplast

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NGSS.MS-LS1-7

In biology class, Zach observes cells. Each cell has a structure that separates the inside of the cell from the environment. Which structure is Zach observing?

• nucleus

• cytoskeleton

• cell membrane

• genetic material

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NGSS.MS-LS1-2

Jemin is making a poster to compare unicellular organisms with multicellular organisms. She writes the following statements on her poster. Which of the following statements is not true?

• Unicellular organisms live longer.

• Multicellular organisms are larger.

• Unicellular organisms are made of just one cell.

• Multicellular organisms have cells that work together.

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NGSS.MS-LS1-1

NGSS.MS-LS1-3

Gerard listed four levels of structural organization within multicellular organisms. He listed them in order from the smallest structure to the largest structure. Which of the following lists is correct?

• cells, tissues, organ systems, organs

• cells, tissues, organs, organ systems

• tissues, cells, organ systems, organs

• tissues, cells, organs, organ systems

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NGSS.MS-LS1-3

What is the function of a cell’s nucleus?

• to hold DNA

• to hold organelles

• to hold cytoplasm

• to hold the cell membrane

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NGSS.MS-LS1-2

Kayla summarizes the cell theory to her class. She states that all organisms are made up of one or more cells. Which pair of statements correctly completes her summary?

• All cells come from existing cells, and all cells have the same parts.

• All cells are the same size, and the cell is the basic unit of all organisms.

• The cell is the basic unit of all organisms, and all cells have the same parts.

• The cell is the basic unit of all organisms, and all cells come from existing cells.

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NGSS.MS-LS1-1

The following diagram shows the basic steps of photosynthesis. What label would you add to complete this illustration so that it shows all the substances involved in photosynthesis?

• ATP

• fat

• protein

• sugar

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Mariella is studying a new type of organism that she has found. She observes that the cells of the organism have ribosomes, mitochondria, and lysosomes. She also observes that the cells do not have a cell wall. What type of organism is Mariella most likely to have found?

• a plant

• a fungus

• an animal

• a prokaryote