Bio final revision (term 3___notes-2.8,2.9,3.5,4.1,4.2,4.3

What are the five levels of organisation in multicellular organisms?

Cell, Tissue, Organ, Organ system, Organism.

What are the four main types of tissue in animals?

Muscle tissue, Connective tissue, Nervous tissue, Epithelial tissue.

What is a tissue?

A group of similar types of cells that work together to carry out specific tasks.

What is the main function of muscle tissue?

Makes movement possible.

What does connective tissue provide?

Structure and support.

What is the function of nervous tissue?

Carries messages to and from the brain.

What is the role of epithelial tissue?

Forms the protective outer layer of the skin and the lining of major organs and internal body cavities.

What are organs made of?

Seven different types of tissues working together.

What is an organ system?

A group of different organs working together to carry out a function.

What organ controls the body?

Brain.

What do the lungs do?

Take in oxygen and remove carbon dioxide.

What is the function of the liver?

Remove toxins and produce bile to help digestion.

What organ absorbs nutrients from food?

Intestine.

What is the role of the kidney?

Filters the blood and produces urine.

What is the main purpose of the bladder?

Stores urine.

What do most plants have in terms of levels of organisation?

Seven levels of organisation.

What is an organelle?

Tiny structures inside a cell, like the nucleus and cell wall.

What is the purpose of xylem tissue in plants?

Carries water.

What does phloem tissue do?

Carries food.

What is the function of palisade tissue?

Photosynthesis - absorbs sunlight to make glucose.

What do decomposers do?

Break down dead plants, animals, and waste, returning nutrients to the soil.

Why are decomposers important?

They keep earth clean and healthy and return nutrients to the soil.

What is an abiotic factor?

A non-living component of the environment, such as light, temperature, and water.

What is a biotic factor?

A living component of the environment, such as plants, animals, bacteria, and fungi.

What percentage of water is in the human lungs?

83%.

What happens during evaporation?

Liquid water turns into water vapor due to the sun's energy.

What is condensation?

The process of water vapor turning into liquid water.

What is precipitation?

The process of liquid water falling back to earth, such as rain or snow.

What is transpiration?

Process of plants releasing water vapor into the environment.

What happens during runoff?

Water flowing back to rivers, lakes, and oceans after precipitation.

What is global warming?

The increase in Earth's temperatures due to the trapping of heat by carbon dioxide from burning fossil fuels.

What effect does global warming have on the water cycle?

It causes ice caps to melt, sea levels to rise, and changes in precipitation patterns.

Why is it important that ice floats?

It forms a layer on top of water, insulating aquatic life below.

What causes sea levels to rise?

Melting ice and warmer oceans that expand.