Question

during osmosis, water moves... *
a) from high solute → low solute concentration
b) from low solute → high solute concentration
c) randomly without concentration gradient
d) using atp against a gradient

which statement about autotrophs is true? *
a) they rely on consuming other organisms.
b) they make glucose using carbon dioxide and sunlight.
c) they cannot store energy in glucose.
d) they require organic food from the environment.

Explanation:

First Question (Osmosis)

Osmosis is the diffusion of water across a semi - permeable membrane. Water moves to the area with higher solute concentration (lower water concentration) to balance the concentration. Option A is the opposite. Option C is wrong as osmosis follows a concentration gradient. Option D is wrong because osmosis is passive transport and does not use ATP.

Second Question (Autotrophs)

Autotrophs (like plants) are producers. They perform photosynthesis, using carbon dioxide, water, and sunlight to make glucose (and oxygen). Option A is for heterotrophs (consumers). Option C is wrong as autotrophs can store energy in glucose (e.g., as starch in plants). Option D is also for heterotrophs as autotrophs make their own food, they don't need to take in organic food from the environment.

Answer:

B) From low solute → high solute concentration