Question

which process releases waste materials from a cell?
a) endocytosis
b) exocytosis
c) diffusion
d) osmosis

which of the following is a nitrogen base in dna?
a) glucose
b) thymine
c) atp
d) ribose

Explanation:

First Question:

• Endocytosis is for taking materials into the cell.
• Exocytosis is the process where cells release waste, secretions, etc. by fusing vesicles with the plasma membrane.
• Diffusion is the movement of particles from high to low concentration (not specific to waste release from cells in this context).
• Osmosis is the diffusion of water across a semi - permeable membrane. So exocytosis is the process that releases waste from a cell.

Second Question:

• Glucose is a sugar (a carbohydrate), not a nitrogen base.
• Thymine is one of the four nitrogenous bases in DNA (along with adenine, guanine, and cytosine).
• ATP (adenosine triphosphate) is an energy - carrying molecule, not a nitrogen base.
• Ribose is a sugar (part of RNA's structure, and in DNA it's deoxyribose), not a nitrogen base. So thymine is a nitrogen base in DNA.

Answer:

B) Exocytosis