Front

What is a nitrogenous base?

Back

A nitrogenous base is a component of nucleotides that codes for traits in DNA and RNA. Examples include adenine, thymine, cytosine, and guanine.

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

How do viruses replicate?

Back

Viruses replicate by entering a host cell and using the host's cellular machinery to produce new virus particles.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What are nucleotides?

Back

Nucleotides are the building blocks of nucleic acids (DNA and RNA) and consist of a nitrogenous base, a sugar (deoxyribose or ribose), and a phosphate group.

Front

What role do nitrogenous bases play in DNA?

Back

Nitrogenous bases in DNA pair with each other (adenine with thymine, and cytosine with guanine) to form the rungs of the DNA double helix, coding for genetic information.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solute particles from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water.

Front

What is the function of deoxyribose sugar in DNA?

Back

Deoxyribose sugar is the sugar component of DNA nucleotides, providing the structural framework for the DNA molecule.

Front

What is a virus?

Back

A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism.

Front

What is the significance of phosphate in nucleotides?

Back

Phosphate groups in nucleotides link together to form the backbone of DNA and RNA strands.