A
A plant cell has a __, but an animal cell does not.
cell wall
A tool used to see tiny things is a __.
microscope
What is the largest organ of the body?
Skin
Name a kind of tissue in the body.
nerve
muscle
A living thing is called an __.
organism
Why is it important to take care of our skin?
-We are made in God's image & take care of what he made
-We can protect it from infection & stay healthy
What is the smallest living part of an organism?
A cell
Name 2 kinds of organs in the body.
heart eyes
lungs intestines
stomach gall bladder
liver brain
A single-celled organism that looks like a blob of jelly & live in water is an __.
amoeba
The __ is the control center of a cell & directs the cell's activity.
nucleus
What is the second layer of skin called?
dermis
A jelly-like liquid that surrounds the nucleus & includes tha part that help the cell live & grow is the __.
cytoplasm
A group of cells doing the same kind of work is __.
tissue
A group of tissues working together to do a job is called a __.
system
What is the top layer of the skin called?
epidermis
A group of tissues working together to do a job is called an __.
organ
Why is it important to know how the body works?
to keep the body healthy & give proper care when the body is ill
One way the body cools itself is by __.
-releasing sweat from pores
-blood vessels widening at the skin's surface
True or False:
The dermis contain the nerves, blood vessels, sweat glands, & oil glands?
True
What is the coloring of the skin called?
melanin
What is the thin covering that holds the cell together?
cell membrane
Why is the epidermis important to the body?
-it keeps out germs & dirt
-it keeps in water
The stiff layer on the outside of a plant's cell membrane & provides shape & support for the plant is __.
cell wall
True or False:
The dermis contains blood vessels and sweat glands.
True
What are tiny pathways that carry messages between the brain and other parts of the body?
nerves