ASVAB General Science Practice Test 500140 Results

	Your Results	Global Average
Questions	5	5
Correct	0	2.94
Score	0%	59%

Review

The __________ nervous system controls voluntary actions.

52% Answer Correctly

	somatic
	autonomic
	central
	peripheral

Solution

Part of the peripheral nervous system, the somatic nervous system is made up of nerve fibers that send sensory information to the central nervous system and control voluntary actions.

Molecules and atoms that are inputs to a chemical reaction are known as which of the following?

63% Answer Correctly

	products
	components
	fuel
	reactants

Solution

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

Within DNA, a variety of a particular gene is called a(n):

55% Answer Correctly

	homozygous
	chromosome
	allele
	heterozygous

Solution

The gene is the base unit of inheritance and is contained within DNA. A gene may come in several varieties (alleles) and there are a pair of alleles for every gene. If the alleles are alike, a person is homozygous for that gene. If the alleles are different, heterozygous.

The Sun is a __________-type main-sequence star.

64% Answer Correctly

	E
	S
	G
	D

Solution

The Sun is a G-type main-sequence star (G2V) but is informally known as a yellow dwarf star. Composed of 73% hydrogen and 25% helium, the hot plasma that makes up the Sun reaches 9,900°F (5,505°C) at the surface. It formed approximately 4.6 billion years ago and makes up 99.86% of the mass in the solar system.

Regulation of heart rhythm occurs in:

61% Answer Correctly

	nerves
	medulla
	cerebellum
	cerebrum

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.