Lesson 29

Question 1

a group of cells doing the same kind of work

Answer 1

tissue

Question 2

tissue that allows your body to move

Answer 2

muscle tissue

Question 3

tissue that carries messages between your brain and your body

Answer 3

nerve tissue

Question 4

a group of tissues working together to do a job

Answer 4

organ

Question 5

a group of organs working togheter to do a job

Answer 5

system

Question 6

What are muscles and nerves made up of?

Answer 6

tissues

Question 7

What are lungs, heart, stomach, and brain?

Answer 7

organs

Question 8

The tongue, esophagus, stomach, intestines, and liver are a part of what?

Answer 8

digestive system

Question 9

The prints made by the ridges on your fingertips are called?

Answer 9

fingerprints

Question 10

Name four organs of the human body.

Answer 10

lungs, heart, stomach, brain

Question 11

top layer of skin

Answer 11

epidermis

Question 12

the second layer of skin

Answer 12

dermis

Question 13

makes new skin cells

Answer 13

epidermis

Question 14

where old, dead skin cells fall off

Answer 14

epidermis

Question 15

What is the largest organ?

Answer 15

skin

Question 16

Why did God give us skin?

Answer 16

for protection

Question 17

What does the epidermis keep out?

Answer 17

germs

Question 18

What does the epidermis keep in?

Answer 18

water

Question 19

What is the coloring in the skin called?

Answer 19

melanin

Question 20

Explain how cells, tissues, organs, and systems are related to each other.

Answer 20

Cells are the smallest living part of an organ. A group of cells doing the same kind of work is a tissue. A group of tissues working together to do a job i an organ. A group of organs working together is called a system.

Question 21

What is a living thing called?

Answer 21

organism

Question 22

What is the smallest living part of an organism?

Answer 22

cell

Question 23

What is a tool used to see things that are very small?

Answer 23

microscope

Question 24

What is a single-cell organism that looks like a blob of jelly and lives in water?

Answer 24

amoeba

Question 25

the control center of a cell that directs the cell’s activities

Answer 25

nucleus

Question 26

the jellylike fluid that surrounds the nucleus and includes the parts that help the cell live and grow

Answer 26

cytoplasm

Question 27

the thin covering that holds the cell together

Answer 27

cell membrane

Question 28

the stiff layer on the outside of a plant’s cell membrane; provides shape and support for the plant

Answer 28

cell wall

Question 29

What is the main difference between an animal cell and a plant cell?

Answer 29

An animal cell has a membrane