GED Science Test #8 3

Question 1

Which describes the role of ribosomes in a cell?

Accepted Answer

Synthesizing proteins from amino acids

Answer

Producing energy via cellular respiration

Answer

Transporting materials within the cell

Answer

Controlling what enters and exits the cell

Question 2

What does the term "biodiversity" refer to?

Accepted Answer

The variety of species and genetic diversity within an ecosystem

Answer

The total number of organisms in a habitat

Answer

The range of temperatures in an environment

Answer

The number of food chains in an ecosystem

Question 3

A catalyst in a chemical reaction:

Accepted Answer

Speeds up the reaction without being consumed

Answer

Is consumed and must be replaced

Answer

Slows down the reaction

Answer

Changes the products of the reaction

Question 4

The diagram shows a wave with a wavelength of 4 m and 2 complete cycles occurring per second. What is the wave's speed?

Accepted Answer

8 m/s

Answer

2 m/s

Answer

4 m/s

Answer

0.5 m/s

Question 5

Which of the following human activities most directly contributes to the loss of biodiversity?

Accepted Answer

Habitat destruction and deforestation

Answer

Tidal energy generation

Answer

Solar panel installation

Answer

Using electric vehicles

Question 6

A chemical equation is balanced when:

Accepted Answer

Both A and B are correct

Answer

The number of atoms of each element is the same on both sides

Answer

The total mass of reactants equals the total mass of products

Answer

The number of molecules is the same on both sides