Semester 1 Test Grade 7

Front

What is absorption in the context of the digestive system?

Back

Absorption is the process by which food molecules pass through the openings in the wall of the small intestine and enter the body.

Front

What does Benedict's solution test for?

Back

Benedict's solution can indicate the presence and amount of glucose in a sample.

Front

How many sodium atoms are in the molecule Na3Cl?

Back

There are 3 sodium atoms in the molecule Na3Cl.

Front

What is density?

Back

Density is the measure of how much matter is in a given space.

Front

What is a system in scientific terms?

Back

A system is a group of parts that interact to perform a specific function.

Front

What is the role of the small intestine in digestion?

Back

The small intestine is where most of the digestion and absorption of nutrients occurs.

Front

What is the difference between a molecule and an atom?

Back

An atom is the smallest unit of matter, while a molecule is made up of two or more atoms bonded together.

Front

What is the function of proteins in the body?

Back

Proteins are essential for building and repairing tissues, making enzymes, and supporting immune function.

Front

What is the significance of glucose in the body?

Back

Glucose is a primary source of energy for the body's cells.

Front

What is a complex carbohydrate?

Back

Complex carbohydrates are made up of sugar molecules that are connected together in long, complex chains, providing sustained energy.