Unit 1
What is photosynthesis?
The way plants make food.
What are the nutrients we need to eat in the largest amount?
Protein, carbohydrates, fat.
What does the heart do?
Pumps blood around the body.
Where is the human respiratory system?
In your chest.
What are gametes?
Special cells for reproduction.
Where is chlorophyll in a plant?
The leaves
What is the first part of the digestive system?
Mouth
What makes blood red?
Hemoglobin
What does the respiratory system do?
Gas exchange.
How long does it take for a zygote to grow into a baby?
Nine months or 38-39 weeks.
What do root hair cells do?
They absorb water and minerals from the soil.
This part digests food.
What is stomach?
What does plasma do?
It transports sugar.
What does aerobic respiration do?
It uses glucose and oxygen to make water and carbon dioxoide.
Where are sperm cells made?
In the testes.
What are xylem vessels and what do they do?
They are long, hollow tubes that carry water and minerals from the roots of the plant to its leaves.
What does the liver do?
Makes bile.
What is the difference between arteries and veins?
Arteries pump blood from heart, veins take blood back to heart.
How does smoking affect your lungs?
It damages your air sacs.
How does fertilization happen?
The sperm cell nucleus fuses with the egg cell nucleus.
What is the function of the lower epidermis?
Protects the cells inside the leaf.
What are the four kinds of teeth?
Incisors, canines, molars, premolars.
What do valves do?
They make sure blood is flowing in the right direction.
How many parts does the human respiratory system have and what are they?
Seven parts, voice box, windpipe, bronchus, lung, muscles between ribs, diaphragm, air sacs
How do you grow?
Your cells get bigger than divide.