1. what are all living things composed of?

a. only one cell

b. one or more cells

c. at least 100 cells

d. at least a trillion cells

2. about how much of the human body is water?

a. 10%

b. 50%

c. 70%

d. 99%

3. which of the following is not a stimulus that living things sense and respond to?

a. dna

b. light

c. hunger

d. sound

4. what is dna?

a. carbohydrate

b. protein

c. nucleic acids

b. amino acids

5. what is true of all organisms?

a. organisms grow and develop.

b. organisms always remain the same size.

c. organisms grow but never develop.

d. organisms always shrink and divide.

6. which of the following characteristics is shared by all organisms?
a. all organisms are composed of two cells.

c. all organisms can move.
b. all organisms can smell and taste.

d. all organisms have cells that contain dna.

7. what is the smallest functional and structural unit of life?
a. the membrane

b. the cell

c. the stimulus

d. the metabolism

8. how do organisms carry out chemical activities of life?
a. through sexual reproduction

c. by using energy
b. through asexual reproduction

d. by increasing metabolism

fill in the blanks below using the following terms:

asexual reproduction sexual reproduction

9. most single-celled organisms produce offspring by

10. in the process of two parents produce offspring with traits of both parents.

1. A

2. C

3. Idk, but I think DNA(A) since it isn't a sense. (pun intended)

4. C

5. A

6. D

7. B

8. C

9. Asexual Reproduction

10. Sexual reproduction

Hope this helps, I highly recommend you take notes on this it is an important chapter that has a lot to play in the future chapters!

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

the electromagnetic energy from the sun arrives in the form of visible and invisible light.