Biology Chapter: Enzyme Activity and Diffusion

What occurs to enzymes when the temperature exceeds their optimum level?

How does low temperature affect enzyme activity?

Which factor increases the rate of diffusion?

What is the primary function of active transport in cells?

What influences the rate of diffusion in a biological system?

Which of the following describes the process of diffusion?

In the lungs, oxygen gas primarily moves from the alveoli into red blood cells by which mechanism?

How does temperature affect diffusion rates in cells?

Which of the following correctly describes osmosis?

What happens to a plant cell placed in a concentrated solution?

What are proteins primarily made from?

What is the initial color of Biuret solution before testing for proteins?

Which biochemical test turns cloudy when a lipid is present?

How do root hair cells absorb ions from the soil?

What is the primary factor influencing the rate of diffusion?

What is the significance of starch as a polymer?

Which statement correctly describes diffusion?

Which of the following elements is NOT found in proteins?

What happens to enzymes when exposed to high temperatures beyond their optimum temperature?

Which of the following statements correctly describes diffusion?

What is the effect of low temperatures on enzyme activity?

Which factor does NOT increase the rate of diffusion?

What is the primary mechanism by which oxygen is exchanged in the lungs?

Which process uses energy to move particles against a concentration gradient?

How does the surface area of alveoli affect gas exchange?

In plants, how does carbon dioxide move into leaves?

What is the outcome when a plant cell is placed in pure water?

Which test would change from blue to brick red if glucose is present?

What are the building blocks of fats?

Which of the following describes osmosis?

How does increasing the temperature affect diffusion?

What kind of structure is formed by starch at the molecular level?

What happens to an animal cell in a concentrated solution?

Which of the following statements about diffusion is true?

Which polymer is directly made from glucose?

What is the original color of iodine solution before testing for starch?

What happens to enzymes when exposed to high temperatures?

An increase in surface area decreases the rate of diffusion.

What is the primary mechanism for the exchange of oxygen in the lungs?

The optimum temperature for enzyme activity in the human body is _____ °C.

Match the following factors with their effect on diffusion:

What is active transport primarily used for in living organisms?

Enzyme activity decreases as temperature decreases, due to increased kinetic energy.

What drives passive diffusion of gases like oxygen and carbon dioxide in living organisms?

Which of the following is a component of proteins?

Glucose is a monomer of cellulose.

What is the test used for detecting starch?

Fats are made up of fatty acids and __________.

Match the following polymers with their monomers:

What is the result of placing a plant cell in pure water?

Animal cells can become lysed when placed in a concentrated solution.

What type of movement is osmosis?

The initial color of Benedict's solution is __________.

What occurs to enzymes when subjected to high temperatures beyond their optimum level?

Enzymes work fastest at temperatures lower than their optimum temperature.

What is the primary role of active transport in cells?

In gas exchange, oxygen diffuses from the alveoli into __________ cells.

What effect does a lower temperature have on enzyme-substrate interactions?

Diffusion is the movement of particles from lower concentration to higher concentration.

What happens to enzyme activity as the temperature exceeds the optimum level?

What do large molecules like proteins break down into?

Osmosis refers to the movement of particles from a region of low concentration to a region of high concentration.

What is the initial color of the iodine test for starch?

Polysaccharides are made from __________.

Match the following biochemical tests with their positive results:

Which of the following are made from glucose?

Osmosis causes plant cells in a concentrated solution to become turgid.

What are the structural units called that combine to form fats?

Diffusion is the net movement of particles from a region of higher __________ to a region of lower concentration.