Biology Semester 1 MEGA Review

Front

What is the role of enzymes in biological reactions?

Back

Enzymes are responsible for speeding up reactions by lowering the activation energy required for the reaction to occur.

Front

In which direction does oxygen move when there is a higher concentration outside the cell?

Back

Oxygen moves into the cell when there is a higher concentration of oxygen outside.

Front

What is the function of mRNA in protein synthesis?

Back

mRNA provides information from DNA to ribosomes, which is essential for protein synthesis.

Front

What is the sugar component of DNA?

Back

The sugar in DNA is called deoxyribose.

Front

What type of bond joins nitrogenous bases in DNA?

Back

Nitrogenous bases are joined by hydrogen bonds.

Front

What is the primary function of ribosomes in a cell?

Back

Ribosomes are responsible for building proteins by translating mRNA.

Front

What are the four nitrogenous bases found in DNA?

Back

The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains deoxyribose sugar, while RNA is single-stranded and contains ribose sugar.

Front

What is diffusion in biological terms?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the role of ATP in cellular processes?

Back

ATP (adenosine triphosphate) serves as the primary energy currency of the cell, providing energy for various cellular activities.