CHEMISTRY HESI A2 EXAM

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CHEMISTRY HESI A2 EXAM

QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -17 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: which term refers to a large group of amino acids joined together?

• protein
• dipeptide
• peptide
• polypeptide

Answer:

d

Question 2: which chemical pathway produces the greatest amount of ATP?

• aerobic glycolysis
• anaerobic glycolysis
• gluconeogenesis
• oxidative phosphorylation

Answer:

d

Question 3: which of the following increases the rate of a chemical reaction?

• increasing the activation energy
• decreasing the surface area
• decreasing the concentration
• increasing the temperature

Answer:

d Question 4: what macromolecules are responsible for passing on genetic information?

• proteins
• nucleic acids
• carbohydrates
• lipids

Answer:

b

Question 5: how many protons does oxygen have? (refer to the periodic table)

• 24
• 16
• 8
• 6

Answer:

c

Question 6: what exponent is equal to 10,000

• 10^6
• 10^5
• 10^4
• 10^3

Answer:

c Question 7: which of the following is an example of a double replacement reaction?

• NaCl --> Na^+ + Cl^-
• Cl2 + H20 --> HOCl + HCl
• 2Na + 2 HCl --> 2NaCl + H2
• 2C2H6 --> 4CO2 + 6H2O

Answer:

b Question 8: what is the correct coefficient for the products of the following reaction when the equation is balanced?C6H12O6 + 6O2 ---> __CO2 + ____H2O

• 2
• 4
• 6
• 8

Answer:

c

Question 9: what type of reaction involves the breaking of a compound into separate components?

• replacement
• combustion
• synthesis
• decomposition

Answer:

d

Question 10: an individual who weighs 70kg weighs how many pounds?

• 154 lbs
• 140 lbs
• 35 lbs
• 32 lbs

Answer:

a Question 11: the atomic number of an atom is equal to the number of:

• electrons
• neutrons
• protons
• isotopes

Answer:

c