BIOS 251 Class One Assignment
Student: __________________________________ Date:_______________________________
1. If the atomic number of an element is 9 and the mass number is 19, how many neutrons does the atom have?
A. 19
B. 28
C. 9
D. 10
2. DNA
A. is important in building carbohydrates.
B. is important in building fats.
C. helps synthesize nucleic acids.
D. provides cellular energy.
E. stores genetic information.
3. An enzyme is a ____.
A. fat that speeds up chemical reactions without being changed or depleted
B. protein that inhibits chemical reactions by being changed or depleted
C. protein that speeds up chemical reactions without being changed or depleted
D. protein that functions as a hormone
E. fibrous protein that is part of certain tissues in the body
4. The subunit molecules for proteins are
A. amino acids.
B. enzymes.
C. polymers.
D. atoms.
,5. The number of ________ determines the identity of an element.
A. protons plus electrons
B. electrons
C. protons
D. neutrons plus protons
E. neutrons
6. Glycogen is stored in the liver and ______.
A. spleen
B. heart
C. toenails
D. skeletal muscles
E. pancreas
7. Sodium, which has an atomic number of 11, will react with chlorine, which has an atomic number of 17.
When these two atoms react, both become stable. To become stable, sodium will ____________, while chlorine
will ____________.
A. share one electron with chlorine; share one electron with sodium
B. become an anion; become a cation
C. give up one electron; accept one electron
D. accept one electron; give up one electron
E. give up one proton; accept one proton
8. Substances that are water-loving are called
A. hydrophilic.
B. hydrophobic.
C. hydrophoric.
D. hydrochromic.
, 9. The symbol for the element calcium is__________.
A. Cl
B. Cu
C. C
D. Ca
E. Cm
10. A substance that can take up hydrogen ions or release hydroxide ions in water is a(an)
A. acid.
B. base.
C. salt.
D. protein.
11. What is the medial border of the highlighted region called?
A. Midclavicular plane
B. Midinguinal plane
C. Subcostal plane
D. Transtubercular plane
Student: __________________________________ Date:_______________________________
1. If the atomic number of an element is 9 and the mass number is 19, how many neutrons does the atom have?
A. 19
B. 28
C. 9
D. 10
2. DNA
A. is important in building carbohydrates.
B. is important in building fats.
C. helps synthesize nucleic acids.
D. provides cellular energy.
E. stores genetic information.
3. An enzyme is a ____.
A. fat that speeds up chemical reactions without being changed or depleted
B. protein that inhibits chemical reactions by being changed or depleted
C. protein that speeds up chemical reactions without being changed or depleted
D. protein that functions as a hormone
E. fibrous protein that is part of certain tissues in the body
4. The subunit molecules for proteins are
A. amino acids.
B. enzymes.
C. polymers.
D. atoms.
,5. The number of ________ determines the identity of an element.
A. protons plus electrons
B. electrons
C. protons
D. neutrons plus protons
E. neutrons
6. Glycogen is stored in the liver and ______.
A. spleen
B. heart
C. toenails
D. skeletal muscles
E. pancreas
7. Sodium, which has an atomic number of 11, will react with chlorine, which has an atomic number of 17.
When these two atoms react, both become stable. To become stable, sodium will ____________, while chlorine
will ____________.
A. share one electron with chlorine; share one electron with sodium
B. become an anion; become a cation
C. give up one electron; accept one electron
D. accept one electron; give up one electron
E. give up one proton; accept one proton
8. Substances that are water-loving are called
A. hydrophilic.
B. hydrophobic.
C. hydrophoric.
D. hydrochromic.
, 9. The symbol for the element calcium is__________.
A. Cl
B. Cu
C. C
D. Ca
E. Cm
10. A substance that can take up hydrogen ions or release hydroxide ions in water is a(an)
A. acid.
B. base.
C. salt.
D. protein.
11. What is the medial border of the highlighted region called?
A. Midclavicular plane
B. Midinguinal plane
C. Subcostal plane
D. Transtubercular plane
