Life at Molecular & Cellular Level - SOL Practice

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

Why can only water molecules enter a cell during osmosis?

Back

Water molecules are smaller than the protein molecules, allowing them to pass through the membrane.

Front

What are eukaryotic organisms?

Back

Eukaryotic organisms are organisms whose cells have a nucleus enclosed within membranes, unlike prokaryotic organisms.

Front

What is the dominant trait in cows for hair length?

Back

In cows, long hair is the dominant trait over short hair.

Front

If a cow is heterozygous for long hair, what percentage of its gametes will carry the dominant allele?

Back

50% of the gametes will carry the dominant allele.

Front

What are viruses made of?

Back

Viruses are made up of either DNA or RNA surrounded by a protein coat.

Front

What happens when the components of a virus are broken down?

Back

The components of a virus break down into amino acids and nucleotides.

Front

What is a prokaryotic cell?

Back

A prokaryotic cell is a simple, unicellular organism that lacks a nucleus and membrane-bound organelles.

Front

What is a eukaryotic cell?

Back

A eukaryotic cell is a complex cell that contains a nucleus and organelles, and can be unicellular or multicellular.

Front

What is the function of the nucleus in a cell?

Back

The nucleus controls cell functions and contains the cell's genetic material.