Adolescence

• Biology
• Lower Secondary (Key Stage 3)

Adolescence

Smallest

Largest

Heart cell

Heart tissue

Heart 

Circulatory system

Human

The building blocks of life.

A group of similar cells working together.

A group of tissues working together.

A group of organs working together.

A living being (e.g. human).

Cell

Organ system

Organ

Organism

Tissue

Cell

Tissue

Organ

Organ

Organ system

Organ system

Match the organ to the organ system.

Lung

Stomach

Brain

Skull

Heart

Respiratory

Digestive

Circulatory

Nervous

Skeletal

Circulatory

Nervous

Respiratory

Digestive

Muscular-Skeletal

Reproductive

Allows us to control and communicate with our body.

Produces new organisms.

Allows us to breathe in oxygen and breathe out carbon dioxide.

Provides support and protection. Allows us to move our bodies.

Breaks down food and absorbs nutrients

Pumps blood around the body.

Cell membrane

Nucleus

Cytoplasm

Mitochondria

Nucleus

Chloroplast

Mitochondria

Cytoplasm

Cell membrane

Cell wall

Vacuole

Which type of change do you think each of these is?

Physical

Emotional

Social

Growth of pubic and underarm hair.

Stronger body odour.

Being more likely to cry at times.

Having a growth spurt. 

Which of these changes happens in both males and females?

1. Voice deepens.
2. Growing taller.
3. Breasts develop.

Which of these changes happens in females?

1. Shoulders widen.
2. Hair grows on the face.
3. Hips widen.

Which of these changes happens in males?

1. Testicles and penis get bigger.
2. Ovaries release eggs.
3. Hips widen.

Which of these is NOT a change that happens during puberty?

1. Hair turning grey.
2. Testicles start producing sperm.
3. Periods start.

What is adolescence?

Do these changes occur in females, males or both?

Females

Both

Males

Breast development.

Voice deepens.

Period starts.

Underarm hair grows.

Pubic hair grows.

Facial hair grows.

Hips widen.

Testes start to produce sperm.

Might become more moody.

Shoulders widen.

Ovaries start to release eggs.

Periods start.

Testes and penis get bigger.

Become attracted to someone else.

Stronger body odour.

Describe one physical change that happens in both males and female during puberty.

Females develop breasts, but males do not. Why do you think this is?

What effect would not producing enough of a sex hormone have?

What is the name of the female sex hormone?

1. Testosterone
2. Oestrogen

Some fish can change sex naturally. What do you think they do this? What would the benefit(s) be?