The smart way to improve grades

Comprehensive & curriculum aligned

Try an activity or get started for free

Understand Hormones and Homeostasis

Worksheet Overview

QUESTION 1 of 10

There are a load of chemicals in your body - all swirling around and trying to keep a balance so you don't get ill. There is adrenalin flowing around your body controlling the amount of serotonin your brain makes; ADH controlling the amount of wee you make; thyroxin controlling basically everything ; and insulin and glucagon controlling how much sugar is in your blood. You are basically one big chemical soup! In this activity, we will be looking at some of those chemicals and their functions. 

 

Our body needs to maintain a steady internal environment through a regulation process called homeostasis. Homeostasis takes place all the time and regulates levels of oxygen, water, carbon dioxide, glucose and the body's temperature. Have you ever noticed how worried people get when someone has a high temperature? This is because if body temperature exceeds the normal 37°C, especially when it gets above 40°, there is a real danger we could die. 

 

Sweating is a way our body uses to cool down. Also, when we are hot, more blood flows near the surface of the skin to help it lose heat. Hypothermia is when the body temperature drops a lot below normal. In the news, we sometimes hear about people who have been trapped or lost in cold, snowy mountains and have died of hypothermia. When we are cold, our body shivers to create a bit of heat. 

 

Hormones are special chemicals produced in glands that help the body regulate different processes. Diabetes, for example, is a condition where the body does not produce enough of the hormone insulin and, therefore, cannot regulate glucose levels in the blood. Diabetics have to inject themselves with insulin.

 

The body also produces sex hormones which regulate changes during puberty, the menstrual cycle (in girls and women), and reproduction. Ovaries in females produce oestrogen and progesterone, whereas testes in males produce testosterone.

 

Hormones also regulate various processes in plants, like growth of shoots, roots and flowers, and ripening of fruit. The most important hormone in plants is auxin

 

Now let's move on to some questions on this topic.

What process is in charge of our internal control system?

Bones

Homeostasis

Insulin

How does the body keep a constant temperature when it is hot?

Sweating

Exercising

More blood flows near the surface of the skin

Shivering

How does our body help us to keep a constant temperature when it is cold?

Sweating

Exercising

Less blood flows near the surface of the skin

Shivering

What do we need to do to prevent dehydration on hot, sunny days?

Exercise

Shiver

Drink plenty of water

Where are hormones produced?

Stomach

Arteries

Glands

What is the name of the hormones that control changes that happen during puberty and the menstrual cycle?

Control hormones

Sex hormones

Menstrual hormones

The male sex hormone is produced in the testes. What is it called?

Image and graph of the menstrual cycle.

 

The graph shows how the levels of the female sex hormones change during the menstrual cycle.

 

Which statements below describe correctly what the graph shows.

If the egg is not fertilised, progesterone levels decrease and the lining of the uterus breaks down

Ovulation happens on day four

After an egg is released, the lining of the uterus becomes thicker in case the egg is fertilised

Women bleed when the thickness of the lining is maintained

A plant hormone is made in the tip of a shoot. The hormone moves towards and collects in the shady side of a shoot. It causes the cells there to elongate (grow longer) more than the cells on the side in the light. This causes the plant shoots to move towards the light.

 

What is the name of the hormone?

Chlorophyll

Auxin

Austin

What processes do plant hormones regulate? 

Root growth

Harvesting

Fruit ripening

Seed dispersal

  • Question 1

What process is in charge of our internal control system?

CORRECT ANSWER
Homeostasis
EDDIE SAYS
Having three options to choose from made this easier, didn't it? Did you find it quite easy to eliminate bones and insulin from your choice? The process that controls our body's internal systems is called homeostasis.
  • Question 2

How does the body keep a constant temperature when it is hot?

CORRECT ANSWER
Sweating
More blood flows near the surface of the skin
EDDIE SAYS
Did you get these two right? When our body temperature rises we start sweating and also more blood flows near the surface of the skin to reduce our temperature. Both these ways vent heat from the body - this is necessary because if we get too hot, our bodies stop performing chemical reactions as efficiently. This could lead to our death!
  • Question 3

How does our body help us to keep a constant temperature when it is cold?

CORRECT ANSWER
Less blood flows near the surface of the skin
Shivering
EDDIE SAYS
Think back to the previous question. This time you need to think about the opposite problem and how to warm yourself up when the temperature is very cold. When our body temperature drops, we start shivering and less blood flows near the surface of the skin to help to prevent heat from being lost. Exercising also increases body temperature but, as you know, it does not happen automatically - we have to put in the effort!
  • Question 4

What do we need to do to prevent dehydration on hot, sunny days?

CORRECT ANSWER
Drink plenty of water
EDDIE SAYS
Dehydration is a condition where water levels in the body drop significantly. One needs to drink plenty of water to maintain constant water levels. If the level of water in your body drops, this can affect everything in your body from how well your lungs work to how shrivelled your cells become.
  • Question 5

Where are hormones produced?

CORRECT ANSWER
Glands
EDDIE SAYS
This one might have been challenging but don't be put off by the use of a word that might be new to you - 'glands'. You can rule out any options that you already know can't be correct, so stomach can go. Do you know what flows through arteries? It's blood, isn't it? So, we're left with the final option. Hormones are chemicals produced in special glands. Your body is covered in glands, but the most notable ones are the pituitary, adrenal and lymphatic glands. Why not look them up and find out what their role is in the health of your body?
  • Question 6

What is the name of the hormones that control changes that happen during puberty and the menstrual cycle?

CORRECT ANSWER
Sex hormones
EDDIE SAYS
Sex hormones control changes that take place during puberty. They also control the menstrual cycle, as well as reproduction. The main male hormone is testosterone and the main female hormone is oestrogen.
  • Question 7

The male sex hormone is produced in the testes. What is it called?

CORRECT ANSWER
testosterone
EDDIE SAYS
Some difficult words to spell in this activity!! Study any problem words very carefully and then practise writing them out without looking. The male sex hormone produced in the testes is called testosterone. Females need this hormone as well, but not as much of it.
  • Question 8

Image and graph of the menstrual cycle.

 

The graph shows how the levels of the female sex hormones change during the menstrual cycle.

 

Which statements below describe correctly what the graph shows.

CORRECT ANSWER
If the egg is not fertilised, progesterone levels decrease and the lining of the uterus breaks down
After an egg is released, the lining of the uterus becomes thicker in case the egg is fertilised
EDDIE SAYS
Ovulation (egg release) is controlled by oestrogen and progesterone. After an egg is released, the lining of the uterus becomes thicker so that the egg can implant itself in it - if it is fertilised. If the egg is not fertilised, progesterone decreases and the uterus lining breaks down in the form of blood - we call this menstruation.
  • Question 9

A plant hormone is made in the tip of a shoot. The hormone moves towards and collects in the shady side of a shoot. It causes the cells there to elongate (grow longer) more than the cells on the side in the light. This causes the plant shoots to move towards the light.

 

What is the name of the hormone?

CORRECT ANSWER
Auxin
EDDIE SAYS
Did this trip you up or did you immediately rule out the name Austin - which might be only one letter different, but is no way the name of a plant hormone! Auxin is a plant hormone made in the tip of a shoot. The hormone moves towards and collects in the shady side of a shoot. It causes the cells there to grow longer than the cells on the light side. This causes the plant shoots to move towards the light. Chlorophyll is found in plants but it is not a hormone. It is a chemical that is vital for the process of photosynthesis.
  • Question 10

What processes do plant hormones regulate? 

CORRECT ANSWER
Root growth
Fruit ripening
EDDIE SAYS
All the processes above are very important in the survival of a plant, but the only two that are regulated by hormones are the first and third options. Hormones regulate root growth and fruit ripening, among other processes. Plants are just like people - a big soup of chemicals all there to make sure that the inside of the plant is healthy so that they can live for as long as possible. The process of seed dispersal varies from plant to plant and could be carried out by wind, water, self or by animals. Harvesting is something that is done to a plant (such as picking apples from a tree) and not a process controlled by the plant. You steamed through this activity - are you feeling more confident with this topic now?
---- OR ----

Get started for free so you can track and measure your child's progress on this activity.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started
laptop

Try an activity or get started for free