Science test

cells and photosysthesis GLLL

What is a cell?

A cell is the basic building block of all living things. It is the smallest unit of life.

What is a cell wall

A cell wall supports the cell membrane. Its function is to support and protect the plant cell.

What is a cell membrane?

The cell membrane forms the boundary of the cell, it allows substances to pass in and out of the cell.

What is the vacuole?

The vacuole stores water nutrients and waste.

What is a mitochondria?

It is the powerhouse of the cell. It breaks down sugar and releases energy to power the cells activities. This process is called cellular respiration.

What is a nucleus

It is the control centre of the cell and contains DNA which provides instructions for the cell to grow and function.

what is the chloroplast?

It absorbs sunlight and stores the energy in sugar with a process called photosynthesis.

What is cytosol?

Allows substances to travel around the cell

What is a organelle?

It is a part in a cell that has a particular function eg: vacuole.

What organelles are only in plant cell?

Large vacuole, cell wall and chloroplast.

What is a specialised cell?

A cell that has a specific shape and structure to do a particular job in the body

What are some examples of specialised cells in the body?

Cardiac muscle cells, blood cells, nerve cell, Intestinal lining cell, fat cells, airway lining cell.

Why do muscle cells have more mitochondrion?

To provide energy for muscle movement

Why does a fat cell have fewer mitochondrion?

Because the cell needs less energy

What are red blood cells?

They are cells that carry oxygen from the lungs to the body.

What is a intestinal lining cells?

They have folded membrane to increase nutrient absorption and surface area

What is a fat cell?

It stores energy from food for future use.

What is a muscle cell?

a long cell in your body to help you move. they are packed with mitochondrion.

What is photosythesis?

Photosynthesis is the process where plants use sunlight to turn carbon dioxide and water into glucose for food

What is the circulatory systems function?

It is the transport network of the body. It pumps blood to deliver oxygen and nutrients to cells, and removes waste products like carbon dioxide.

What is the respitarory systems function?

It performs gas exchange. It takes oxygen into the body and removes carbon dioxide.

What is the digestive system function?

Its key function is to break down large food molecules into small nutrients that the body can absorb into the bloodstream for energy and growth.

What are the key parts in the circulatory system?

heart, blood vessels and blood

What are the key parts in the respiratory system?

Trachea (windpipe), lungs and alveoli

What are the key parts in digestive system?

Mouth & Esophagus, stomach, small intestine and large intestine