Biology Quiz

Which organelles differentiate plant cells from animal cells?

• flagella and nuclei

• mitochondria and ribosomes

• cell walls and large central vacuoles

• contractile vacuoles and cell membranes

Answer explanation

Plant cells are differentiated from animal cells by the presence of cell walls and large central vacuoles, which are not found in animal cells.

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Bio.1.1.1

Which organelles must work together to provide food and energy to a plant cell?

• chloroplast and mitochondria

• cell membrane and cell wall

• mitochondria and vacuole

• chloroplast and vacuole

Answer explanation

The organelles that must work together to provide food and energy to a plant cell are chloroplast and mitochondria.

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Bio.1.1.1

Plant cells are able to produce their own food. This process happens in which structure?

• cell wall

• chloroplast

• mitochondrion

• vacuole

Answer explanation

Plant cells produce their own food through photosynthesis, which occurs in the chloroplasts. Chloroplasts contain chlorophyll, the pigment responsible for capturing light energy to convert into food.

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Bio.1.1.1

A primary function of a vacuole in a cell is (a)   .

• enzyme production
• protein synthesis
• storage
• reproduction

Answer explanation

The primary function of a vacuole in a cell is storage, not enzyme production, protein synthesis, or reproduction.

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Bio.1.1.1

In general terms, how does cholesterol mainly affect the cellular plasma membrane?

• It controls transport of material in and out of the cell.

• It determines fluidity of the cellular plasma membrane.

• It forms the material that produces organelles such as mitochondria.

• It controls cell division and replication functions during mitosis and meiosis.

Answer explanation

Cholesterol mainly affects the cellular plasma membrane by determining its fluidity, which is crucial for maintaining membrane structure and function.

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Bio.1.1.1

How are these cells classified?

• Cell 1 is a eukaryotic cell, while Cell 2 is a prokaryotic cell.

• Cell 1 is a prokaryotic cell, while Cell 2 is a eukaryotic cell.

• Cell 1 and Cell 2 are both eukaryotic cells.

• Cell 1 and Cell 2 are both prokaryotic cells.

Answer explanation

Cell 1 is a prokaryotic cell, while Cell 2 is a eukaryotic cell.

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Bio.1.1.2

Which best describes the general characteristics of new prokaryotic organisms discovered near a deep seafloor vent? (a)  

• colonial, autotrophic
• multicellular, autotrophic
• single-celled, autotrophic
• multicellular, heterotrophic

Answer explanation

The correct choice is single-celled, autotrophic, as new prokaryotic organisms near deep seafloor vents are typically single-celled and capable of producing their own food.

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Bio.1.1.2

What kind of cell is a student observing under a microscope if it has a cell wall, a plasma membrane, and circular DNA?

• plant cell

• animal cell

• eukaryotic cell

• prokaryotic cell

Answer explanation

The student is observing a prokaryotic cell because it has a cell wall, plasma membrane, and circular DNA, which are characteristics of prokaryotic cells.

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Bio.1.1.2

Which classification best matches a unicellular organism that has a cell wall, a nucleus, chloroplasts, and several flagella?

• eukaryotic plant

• eukaryotic protist

• prokaryotic eubacteria

• prokaryotic archaebacteria

Answer explanation

The organism described is unicellular with a cell wall, nucleus, chloroplasts, and flagella, fitting the characteristics of a eukaryotic protist.

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Bio.1.1.2

Which is most likely true of prokaryotic cells?

• They are large, complex cells.

• Their DNA is contained in the nucleus.

• Their organelles are surrounded by membranes.

• They evolved on Earth before eukaryotic cells.

Answer explanation

Prokaryotic cells evolved on Earth before eukaryotic cells, making it the most likely true statement among the options provided.

Tags

Bio.1.1.2