Front

Why do living things need nitrogen?

Back

To make proteins AND amino acids.

Front

What is the reason that humans, birds, whales, and lizards all have similar arm bones?

Back

They have a common ancestor.

Front

What are the possible genotypes for a cross that results in TT = 25%, Tt = 50%, tt = 25%?

Back

TT = 25% Tt = 50% tt = 25%.

Front

What is the passive transport mechanism that involves the movement of water from an area of high concentration to an area of low concentration?

Back

Osmosis.

Front

Where are phospholipids found in a cell?

Back

In the membrane.

Front

What is the function of amino acids in living organisms?

Back

They are the building blocks of proteins.

Front

What is the significance of a common ancestor in evolutionary biology?

Back

It explains the similarities in structure and function among different species.

Front

What is diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration.

Front

What is the role of the cell membrane?

Back

It regulates what enters and exits the cell.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy, while passive transport does not.