ASVAB ASVAB Certifications ASVAB-SECTION-7 Questions & Answers

• Question 131:

  The ___________ of an isotope is the time in which it takes half of an initial amount of an isotope to decay into something else.

  A. decay period

  B. half-life

  C. covalence coefficient

  D. midlife decay point

  Correct Answer: B

  Explanation:

  The half-life of an isotope is the time in which it takes half of an initial amount of an isotope to decay into

  something else.

• Question 132:

  The cells that can easily be scraped from the lining of the mouth make up __________.

  A. connective tissue

  B. epithelial tissue

  C. supporting tissue

  D. voluntary tissue

  Correct Answer: B

  Epithelial cells form the skin and inner lining for organs.

• Question 133:

  Most cells without a cell wall also lack __________.

  A. mitochondria

  B. chloroplasts

  C. cell membranes

  D. vacuoles

  Correct Answer: B

  Explanation:

  The cell wall, mainly composed of cellulose, is an important characteristic of plant cells. Chloroplasts

  contain energy-accumulating pigments and are found only in plant cells.

• Question 134:

  The function of an enzyme is to __________.

  A. provide energy for a chemical reaction

  B. speed up a chemical reaction

  C. become hydrolyzed during a chemical reaction

  D. serve as an inorganic catalyst

  Correct Answer: B

  Explanation:

  Enzymes are organic (protein) catalysts that affect the speed of chemical reactions without being used up

  themselves.

• Question 135:

  The DNA of a cell is found mainly in its __________.

  A. membrane

  B. cytoplasm

  C. vacuoles

  D. chromosomes

  Correct Answer: D

  Explanation:

  Chromosomes are composed of DNA and protein and are usually found in the nucleus.

• Question 136:

  What chemical can be used to detect blood, even if it's been wiped from a surface?

  A. luminol

  B. cyanide

  C. ninhydrin

  D. alcohol

  Correct Answer: A

• Question 137:

  Which of the following statements is not true?

  A. The human female chin is usually more rounded or pointed than the human male chin.

  B. The human female pelvis is usually deeper than the human male pelvis.

  C. The human male skull is usually larger than the human female skull.

  D. The human male skull has a larger brow ridge than the human female skull.

  Correct Answer: B

• Question 138:

  A lunar eclipse occurs when __________.

  A. the earth moves into the moon's shadow

  B. the sun blocks the moon from view

  C. the earth moves into the sun's shadow

  D. the moon moves into the earth's shadow

  Correct Answer: D

• Question 139:

  What does the term forensic mean?

  A. pertaining to law

  B. pertaining to death

  C. pertaining to medicine

  D. pertaining to life

  Correct Answer: A

• Question 140:

  Absolute zero is __________.

  A. 0 degrees Fahrenheit

  B. 0 degrees Celsius

  C. -263 degrees Celsius

  D. -32 degrees Fahrenheit

  Correct Answer: C