MYP4 NYATI

When particles move from areas of high concentration to areas less concentrated, this has taken place.

• diffusion

• mitosis

• endocytosis

• photosynthesis

Answer explanation

When particles move from areas of high concentration to areas of low concentration, this process is called diffusion. It is a fundamental concept in biology and chemistry, distinguishing it from other processes like mitosis or photosynthesis.

Which diagram best shows the end result of diffusion?

• F

• G

• H

• J

Answer explanation

Choice J best illustrates the end result of diffusion, showing a uniform distribution of particles throughout the space, which is the key characteristic of diffusion. Other choices do not depict this balanced state.

Where is there a high concentration of bbq smoke?

• In the bbq pit

• In the house

• Two streets over

• In the atmosphere

Answer explanation

The highest concentration of BBQ smoke is found in the BBQ pit, where the cooking occurs. Other locations like the house or atmosphere may have some smoke, but the pit is where it is most concentrated.

What does “high concentration area” mean?

• Spread out

• Tightly packed together

• Uncrowded

• Spacious

Answer explanation

A "high concentration area" refers to a space where items or people are "tightly packed together". This indicates a dense grouping rather than being spread out or spacious.

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

• High, low

• Low, high

• Low, low,

• High, high

Answer explanation

Diffusion is the process where molecules move from an area of high concentration to an area of low concentration, seeking to equalize the concentration gradient. Therefore, the correct answer is 'High, low'.

Where is there a low concentration of dye?

• at the bottom of cup

• in the color

• at the top of cup 

• no concenteraion gradient

Answer explanation

The dye concentration is typically higher at the top of the cup due to diffusion. Therefore, the lowest concentration of dye is found at the bottom of the cup, making 'at the bottom of cup' the correct answer.

The picture below is an example of _________________.

• osmosis

• isotonic

• diffusion

• active transport

Answer explanation

The picture illustrates diffusion, which is the movement of particles from an area of higher concentration to an area of lower concentration. This process occurs naturally and does not require energy, distinguishing it from active transport.

What is DIFFUSION?

• 
• 
• 
• 

Permeable means

• things can pass through

• the concentration levels are different

• it is permanent

• things are stuck

Answer explanation

Permeable refers to materials that allow substances to pass through them. Therefore, the correct choice is 'things can pass through', as it accurately describes the nature of permeable materials.

Diffusion occurs only in solids

• True

• False

Answer explanation

Diffusion occurs in gases, liquids, and solids. It is the process of particles spreading from areas of high concentration to low concentration, making the statement false.