Cell Structure and Function Concepts review for me

What can or cant pass through the plasma membrane

• Small polar molecules can pass through
• Large nonpolar molecules can pass through
• Water cannot pass through the plasma membrane
• Ions can easily cross the membrane
• Small nonpolar molecules can pass through; large polar molecules and ions cannot.

What cells have a plasma membrane

• Only plant cells have a plasma membrane.
• Only animal cells have a plasma membrane.
• Some cells lack a plasma membrane.
• Only prokaryotic cells have a plasma membrane.
• All cells have a plasma membrane.

The nucleus is the

• energy source of the cell
• site of protein synthesis
• control center of the cell
• membrane surrounding the cell
• location of a cell's DNA

The DNA found in a cell’s nucleus exists as

• nucleolus
• mitochondria
• ribosome
• chromatin
• plasmid

What cells have a nucleus

• Prokaryotic cells
• Fungal spores
• Eukaryotic cells
• Both Eukaryotic and Prokaryotic cells

• Bacterial cells

When a cell needs a protein

• The cell stores proteins in the nucleus until needed.
• The cell transcribes the gene into mRNA and translates it to produce the protein.
• The cell absorbs proteins from its environment directly.
• The cell uses carbohydrates to create proteins.
• The cell breaks down existing proteins to reuse their components.

This mRNA copy leaves the nucleus
through a

• cell membrane
• nuclear envelope
• ribosome
• nuclear pore complex
• endoplasmic reticulum

Ribosomes are also built in the

• endoplasmic reticulum
• nucleus
• cytoplasm
• mitochondria
• nucleolus

Ribosomes do what

• Ribosomes synthesize proteins.
• Ribosomes store genetic information.
• Ribosomes transport nutrients in cells.
• Ribosomes produce energy for the cell.
• Ribosomes break down waste materials.

Ribosomes are found in what cell(s)

• Ribosomes are only found in eukaryotic cells.
• Ribosomes are absent in all prokaryotic cells.
• Ribosomes are found in all living cells, including prokaryotic and eukaryotic cells.
• Ribosomes are found only in plant cells.
• Ribosomes are only present in animal cells.