CRM 3.3 Review

Which is not a part of Cell Theory?

• Cells come from previous cells

• Cells make up all living things

• Cells generate spontaneously

• Cells are the basic unit of life

Answer explanation

Spontaneous generation was disproved by the evidence provided by Rudolf Virchow and Robert Remak.

What is the function of the shown structure?

• Provide structure for the cell

• Provide energy for the cell

• Provide carbohydrates for the cell

• Provide lipids for the cell

Answer explanation

The structure shown is a mitochondrion. It's function is to produce energy for the cell, called ATP, through the process of cellular respiration.

What is the function of the structure shown?

• Stores water for the cell

• Stores lipids for the cell

• Stores carbohydrates for the cell

• Stores genetic information for the cell

Answer explanation

The structure shown is the large, central vacuole. Its function is to store water for the cell.

What is the function of the structure shown?

• Produce carbohydrates for the cell

• Produce lipids for the cell

• Produce nucleic acids for the cell

• Produce proteins for the cell

Answer explanation

The structure shown is a ribosome. Its function is to make proteins for the cell by translating mRNA into chains of amino acids.

What is the function of the structure shown?

• Produce carbohydrates for the cell

• Produce lipids for the cell

• Produce nucleic acids for the cell

• Produce proteins for the cell

Answer explanation

This is a chloroplast. Its function is to make glucose, a carbohydrate, through the process of photosynthesis.

Which of the following organelles is present in both prokaryotic cells and animal cells?

• Cell wall

• Flagella

• Mitochondria

• Nucleus

Answer explanation

Prokaryotes (bacteria and archaea) can have flagella. Animal sperm also have flagella!

Which of the following organelles is found only in prokaryotic and plant cells, but not in animal cells?

• Chloroplasts

• Lysosomes

• Plasmids

• Ribosomes

Answer explanation

While ribosomes are found in all cells, chloroplasts can only be found in prokryotic cells and plant cells.

Which of the following organelles can be found in all cells?

• Cytoplasm

• Chloroplasts

• Cell Membrane

• Ribosomes

Answer explanation

Not all cells have chloroplasts. Only plant cells and some prokaryotes have chloroplasts.

Which type of cellular transport requires energy?

• Simple diffusion

• Osmosis

• Facilitated diffusion

• Active transport

Answer explanation

ACTIVE transport means that energy is required! The other types of cell transport do not require energy.

Which type of cellular transport does not require a protein channel?

• Simple diffusion

• Osmosis

• Facilitated diffusion

• Active transport

Answer explanation

Simple diffusion is the movement of small, non-polar molecules between the phospholipids as they move around. Osmosis is the movement of water between the phospholipids. These do not require a protein channel.