lesson 34-ecosystems

1.

1 point

All organisms share-

the same organelles

the same method of obtaining nutrients

the components that make up their genetic code

2.

1 point

What consists of all organisms and nonliving things found in a particular location?

population

community

ecosystem

biome

3.

1 point

Some populations have not been able to survive in their ecosystems. What did these populations lack?

large enough ecosystem

biotic factors

habitats in the ecosystem

adaptations for the ecosystems

4.

1 point

Which of the following is abiotic?

water

fungus

bear

bacteria

5.

1 point

What would be best to consider to determine the reactivity of an element?

How many valance electrons it has

its average atomic mass

how many protons it has

6.

1 point

An object can change its acceleration how many ways?

3

8

5

2

7.

1 point

Does biodiversity depend on one species?

no

yes

8.

1 point

Which of the following is biotic?

air

virus

bear

water

9.

1 point

Which cellular process depends on light?

respiration

homeostasis

photosynthesis

transport

10.

1 point

Which of the following describes an acceleration?

90 km/h, north, then east

10 m/s south

5 m/s southeast

11.

1 point

What must all members of a population belong to?

kingdom

species

class

genus

12.

1 point

What is any influence that can cause an object to accelerate?

force

acceleration

motion

inertia

13.

1 point

A student performs a lab in which he records the position of a cart at five different times. How would the student find out whether the speed of the cart was constant?

divide the final position by the time

draw a position-time graph and see whether the graph is a straight line

draw a position-time graph to see whether the graph is a horizontal line

14.

1 point

The survival of a species is less likely if resources are-

limited

plentiful

plethora of resources

renews fast

15.

1 point

How many atoms in total are in one molecule of H3PO4?

8

3

7

11

16.

1 point

What unit is used to measure force?

inches

miles

joules

newtons

17.

1 point

Which process is responsible for the variations that appear among the members of a population?

cell specialization

meiosis

mitosis

cell cycle

18.

1 point

Which of the following shows a correct sequence that proceeds from a smaller level of organization to a level that is larger?

community->population

ecosystem->biome

species->population

biome->habitat

19.

1 point

What do all the populations in an ecosystem represent?

biome

community

ecosystem

species

20.

1 point

An _________ is an inherited trait that helps an organism to survive.

jumnjia

adaptation

species

freckles

21.

1 point

A scientist is studying an ecosystem. Which of the following would this scientist not be investigating?

how traits serve as adaptations

how variations are inherited

how temperature affects the organisms

22.

1 point

Velocity describe what two factors?

speed

direction

acceleration

weight

23.

1 point

Is cutting a log considered a chemical change?

no

yes

24.

1 point

A straight line on a graph means what?

decelerating

equilibrium

accelerating

25.

1 point

What makes up a population?

many species

one species

abiotic factors

the sun

26.

1 point

Which of the following does not describe a change in velocity?

an object

an object speeds up

an object slows down

an object is not moving

27.

1 point

Where does an organism live?

genus

habitat

dirqutensuit

space

28.

1 point

The formula: distance traveled/time is for what?

acceleration

motion

velocity

speed