ASVAB General Science Practice Test 896489 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.19
Score	0%	64%

Review

Molecules and atoms that are outputs from a chemical reaction are known as which of the following?

57% Answer Correctly

	reactants
	results
	products
	side effects

Solution

During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).

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

45% Answer Correctly

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

Solution

Secondary or tertiary consumers may be omnivores.

Regulation of heart rhythm occurs in:

61% Answer Correctly

	cerebrum
	medulla
	cerebellum
	nerves

Solution

Part of the brainstem, the medulla is the connection between the brain and the spinal cord. It controls involuntary actions like breathing, swallowing, and heartbeat.

What is a major difference between the somatic and autonomic nervous systems?

82% Answer Correctly

	each belongs to a different nervous system
	one controls thinking, the other controls feeling
	one is inherited, the other is learned
	one controls voluntary activity, one controls involuntary activity

Solution

Both are part of the peripheral nervous system. The somatic nervous system sends sensory information to the central nervous system and controls voluntary actions while the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.

What prevents blood pumped out of the ventricles from flowing back into the heart?

73% Answer Correctly

	valves
	platelets
	capillaries
	atria

Solution

The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.