ASVAB General Science Practice Test 562869 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.02
Score	0%	60%

Review

Earth's history is divided into time periods, which of these is the longest time period?

67% Answer Correctly

	epoch
	era
	age
	eon

Solution

The Earth is approximately 4.6 billion years old and its history is divided into time periods based on the events that took place and the forms of life that were dominant during those periods. The largest graduation of time is the eon and each eon is subdivided into eras, eras into periods, periods into epochs, and epochs into ages.

In fermentation, what replaces oxygen in anaerobic respiration?

63% Answer Correctly

	ascorbic acid or peptides
	starches
	lactic acid or alcohol
	water

Solution

If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.

Secondary consumers that also eat producers are known as:

62% Answer Correctly

	scavengers
	carnivores
	omnivores
	herbivores

Solution

Secondary consumers (carnivores) subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens.

Plant cells are surrounded by:

64% Answer Correctly

	neither a cell membrane nor a cell wall
	a cell membrane and a cell wall
	only a cell wall
	only a cell membrane

Solution

Animal cells are surrounded by a semipermeable membrane which allows for the transfer of water and oxygen to and from the cell. In plant cells, the cell membrane is surrounded by a somewhat rigid cell wall which provides the cell structure and support.

In the food chain, omnivores may be which of the following?

45% Answer Correctly

	primary or tertiary consumers
	secondary consumers or scavengers
	secondary or tertiary consumers
	primary or secondary consumers

Solution

Secondary or tertiary consumers may be omnivores.