Take this Quiz: GED and HiSET science — life science | Zestly

Question 1

A cell is damaged such that its ribosomes can no longer function. What is the most immediate consequence for the cell?

Accepted Answer

The cell cannot synthesize new proteins.

Answer

The cell cannot transport materials across the membrane.

Answer

The cell cannot produce energy from glucose.

Answer

The cell cannot store genetic information.

Question 2

Photosynthesis and cellular respiration are often described as complementary processes. Which statement best describes this relationship?

Accepted Answer

The products of photosynthesis are the reactants for cellular respiration.

Answer

The reactants of photosynthesis are the same as the products of respiration.

Answer

Both processes consume oxygen to produce glucose.

Answer

Both processes release carbon dioxide as a primary energy source.

Question 3

In a food web, producers capture 10,000 units of energy from the sun. Primary consumers eat the producers, but only 1,000 units of that energy are stored in their bodies. What happens to the remaining 9,000 units?

Accepted Answer

It is lost as heat or used for the producer's life processes.

Answer

It is transferred directly to the secondary consumers.

Answer

It is stored in the soil as inorganic matter.

Answer

It is converted into oxygen by the consumers.

Question 4

In a certain plant species, the gene for flower color has two versions: purple (dominant) and white (recessive). If two parent plants, both carrying one purple gene and one white gene, are crossed, what is the probability that an offspring will have white flowers?

Answer

50 percent

Answer

75 percent

Answer

0 percent

Answer

25 percent

Question 5

Which of the following best distinguishes between a gene and a trait?

Answer

A gene is always expressed, while a trait is hidden.

Answer

A gene is a unit of heredity, while a trait is the observable result of that gene's expression.

Answer

A gene is determined by the environment, while a trait is determined by DNA.

Answer

A gene is a physical feature, while a trait is a segment of DNA.

Question 6

The human circulatory system and respiratory system are highly interdependent. What happens if the respiratory system fails to bring in enough oxygen?

Answer

The circulatory system cannot deliver enough oxygen to body tissues.

Answer

The circulatory system stops pumping blood entirely.

Answer

The circulatory system begins to produce its own oxygen.

Answer

The circulatory system increases the production of red blood cells to compensate.