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PMI PMP PMBOK Exam Book With 540+ Q&A's + Solution Guide.
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PMI PMP PMBOK Exam Book With 540+ Q&A's + Solution Guide LATEST 2024/2025 A+ GUIDE.
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BIOCHEMISTRY TEST – PRACTICE QUESTIONS (Answers on last page)1. The atomic # for Fe (iron) is 26. How many protons in Fe2+?
(A) 22 (B) 24 (C) 26 (D) 28 (E) 30
2. Two molecules that are isomers:
(A) must contain the same functional groups
(B) often differ in the number of unsaturated bonds they possess
(C) have the same molecular formulas
(D) often have different masses
3. The maximum number of electrons which may occupy any given energy level in an atom is:
(A) the Group number (D) 2n2
(B) the valence of that atom (E) the octet rule
(C) n2
4. In which of the following kinds of organic compounds does a carbon atom bond ONLY to hydrogen and other
carbon atoms?
(A) carbohydrates
(B) fatty acids
(C) lipids
(D) nucleic acids
(E) hydrocarbons
5. Glycogen is best defined as a:
(A) storage form of lipids (D) polymer of glucose
(B) storage form of glycerol
(E) storage form of proteins (C) polymer of lactose
6. Most biologically important atoms attempt to possess _____ electrons in their outermost energy level. (A)
n2(B) 2 (C) 10 (D) 4 (E) 8
7. The number of valence electrons in an atom with atomic number 13 is:
(A) 1 (B) 3 (C) 5 (D) 8 (E) 13
8. Which molecule does NOT have a polar covalent bond?
(A) H2O (B) H-Br (C) H-H (D) H-F (E) H-I
9. What chemical family does H2C=C=CH2 belong to?
(A) alkane (D) ether
(B) alkene (E) ester
(C) alkyne
10. In the induced-fit model of enzyme action, a _______ must bind to the enzyme's______ for the enzyme to
perform its function.
(A) catalyst; activation energy (D) product; catalytic site (B) product; active site (E) water
molecule; allosteric site (C) substrate; active site
11. Which one of the following applies to a basic solution?
(A) high OH-(D) H+= OH-
(B) low OH-(E) both B and C are correct (C) high H+
12. Which one of the four classes of biologically important molecules does CELLULOSE belong to? (A)
carbohydrates (C) proteins
(B) nucleic acids (D) lipids
13. Amino acids are joined during a(n) __________ reaction and a(n) __________bond/linkage is formed. (A)
hydrolysis; peptide (C) condensation; amide (B) neutralization; ether (D) oxidation; ester
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