EmSAT EmSAT Biology 1

Question 1

What is the powerhouse of the cell?

Accepted Answer

Mitochondria

Answer

Mitochondria are known as the powerhouse of the cell because they produce ATP (adenosine triphosphate) through cellular respiration, providing energy for cellular functions.

Question 2

What is the function of ribosomes?

Accepted Answer

Protein synthesis

Answer

Ribosomes are the sites of protein synthesis. They read mRNA sequences and assemble amino acids into proteins following the genetic code.

Question 3

What type of cell does NOT have a nucleus?

Accepted Answer

Prokaryotic cell

Answer

Prokaryotic cells (bacteria and archaea) lack a membrane-bound nucleus. Their genetic material is found in the nucleoid region. Eukaryotic cells (animals, plants, fungi) all have a nucleus.

Question 4

What is osmosis?

Accepted Answer

Movement of water from high to low solute concentration across a semipermeable membrane

Answer

Osmosis is the passive movement of water molecules across a semipermeable membrane from an area of low solute concentration (high water concentration) to an area of high solute concentration (low water concentration).

Question 5

What is the role of DNA in a cell?

Accepted Answer

Carries genetic information and instructions for protein synthesis

Answer

DNA (deoxyribonucleic acid) carries the genetic information of an organism and contains the instructions for synthesizing all proteins needed for the organism's structure and function.

EmSAT Practice Test

EmSAT Practice Test

EmSAT EmSAT Biology 1