Where are our olfactory receptors? 1. In the skin 2. In the brain 3. In the nasal cavity 4. In the tongue

Which of these options is an internal stimulus. 1. Feeling hungry 2. Feeling cold water 3. Feeling pain if an insect stings you 4. Hearing a loud noise

Where can you find epithelial cells? 1. In our muscles 2. In the skin 3. In our brain 4. In our bones

The skin is the organ of...

Choose the odd one out. 1. Stomach 2. Eye 3. Digestive system 4. Heart

… expand and contract. 1. Bones 2. Muscle cells 3. Nerve cells 4. Epithelial cells

The tongue is a sense.

Action or change in the environment that we perceive. 1. Response 2. Information 3. Order 4. Stimulus

Choose the correct order of levels of organization. 1. Cell, tissue, organism, system, organ 2. Cell, tissue, system, organ, organism 3. Cell, tissue, organ, system, organism 4. Organism, system, tissue, organ, cell

The eardrum is in the middle ear.

Choose the odd one out. 1. Ear canal 2. Cochlea 3. Skin 4. Eardrum

The cell receptors in the eye are in the ....

When I see a lion is a .....