origin of life-9th STAAR

1.

1 point

what did radiation from the sun provide that made the origin of life on Earth possible?

raw materials

energy

nutrients

2.

1 point

What kind of biomolecule can be synthesized from the amino acids that Miller and Urey made in their experiment?

proteins

carbohydrates

lipids

nucleic acids

3.

1 point

What do all organic compounds have in common?

sulfur

water

carbon

nitrogen

4.

1 point

Did the first life need oxygen?

yes

no

5.

1 point

Which organelle is present in both prokaryotes and eukaryotes?

mitochondrion

nuclear membrane

cell membrane

chloroplast

6.

1 point

What have scientists discovered on meteorites?

nucleic acids

lipids

proteins

amino acids

7.

1 point

What is the correct order of predators and prey, from the lowest on the food chain to highest on the food chain?

insect, sparrow, snake, hawk

snake, sparrow, insect, hawk

insect, snake, hawk, sparrow

hawk, snake, sparrow, insect

8.

1 point

What did Fox accomplish?

assembled amino acids into proteins

formed complex organic molecules from 4 gases

9.

1 point

What is meant by the term organic soup?

mixture of inorganic molecules

dinosaur soup

mixture of organic molecules

caveman food

10.

1 point

What are clumps of various proteins and molecules called?

aliens

goop

coarcervates

11.

1 point

What gas is essential to life today, but wasn't in early atmosphere?

carbon dioxide

oxygen

helium

12.

1 point

What did Miller and Urey accomplish?

formed complex organic molecules from 4 gases

boiled ocean water

dug up fossils

assembled amino acids into proteins

13.

1 point

Earth's primitive atmosphere was made up of water vapor, ammonia, and oxygen.

True

False

14.

1 point

Which molecules were present in the organic soup that existed before life appeared?

enzymes

carbon dioxide

amino acids

nucleic acids

15.

1 point

Which is a biotic factor that limits the number of organisms supported in an ecosystem?

amount of light

type of soil

number of predators

amount of water

16.

1 point

How old are the oldest fossils of living organisms?

2.7 billion

3.5 billion

50 billion

100 years

17.

1 point

Which of the following illustrates what happens during replication?

DNA = DNA

RNA = DNA

DNA = RNA

18.

1 point

Which of the following is not considered a type of consumer?

carnivore

omnivore

herbivore

plant

19.

1 point

The hawk population of a small valley hunts wild mice as its main source of food. If there is a significant drop in the mouse population, the hawks will

decline in number

develop smaller bodies

reproduce at a faster rate

begin to protect the mice

20.

1 point

When do scientists think that life originated on Earth?

1000 years ago

between 3.5 and 4.5 billion years ago

6 billion years ago