Exam 1 Bio 207
1. What can be determined by the electrons in the outermost shell of
an atom?
Select one:
a. weight.
b. chemical behavior.
c. mass.
d. shape.
e. atomic number.
2. What two molecules enter the citric acid cycle?
Select one:
a. two 3-carbon compounds and 38 ATPs.
b. 2-carbon compound and 4-carbon acetyl CoA.
c. 4-carbon compound and an acetyl CoA.
d. glucose and a fructose.
e. a pyruvic acid and a glucose.
3. Enzymes assist organisms in chemical reactions by _______.
Select one:
a. raising the activation energy.
b. bringing energy in the form of ATP molecules into cells.
c. sending ATP molecules out of cells.
d. creating more efficient metabolic pathways.
e. lowering the activation energy.
4. As hydrogen ion concentration decreases, the pH number
Select one:
a. stays the same.
b. approaches 14.
c. gets smaller.
d. becomes negative.
5. What is primarily contained within a nucleolus?
Select one:
a. DNA and protein.
, Exam 1 Bio 207
b. RNA and protein.
c. DNA and lipid.
d. RNA and DNA.
e. RNA and lipid.
6. What type of inorganic substances usually dissociate in water?
Select one:
a. carbohydrates.
b. electrolytes.
c. lipids.
d. organic compounds.
e. non-electrolytes.
7. What correctly describes the body while it is in the anatomical
position?
Select one:
a. standing erect with face turned to the side
b. lying on the back with the face turned to the side
c. lying on the back with the face forward
d. standing erect with the upper limbs reaching over the head
e. standing erect with the face forward
8. Select the elements that make up 95% (by weight) of the human
body.
Select one:
a. sodium, calcium, nitrogen, selenium
b. carbon, hydrogen, oxygen, nitrogen
c. carbon, hydrogen, selenium, sodium
d. carbon, hydrogen, oxygen, calcium
e. carbon, hydrogen, calcium, nitrogen
9. What part of an ATP molecule holds the energy used in
metabolism?
Select one:
a. the phosphate bonds.
, Exam 1 Bio 207
b. the sugar.
c. the nitrogen-containing base.
d. the amino acid.
e. the adenine.
10. The number of _______ vary in the atoms of the isotopes of a
particular element.
Select one:
a. nuclei.
b. protons.
c. neutrons.
d. electrons.
e. electron shells.
11. The molecular formula for compounds like potassium
chloride (KCl) give the relative amounts of each element present.
Select one:
True
False
12. The anticodon sequence is part of a ribosomal RNA.
Select one:
True
False
13. What is the process called where kidneys cleanse the blood?
Select one:
a. facilitated diffusion.
b. active transport.
c. exocytosis.
d. protein synthesis.
e. filtration.
14. What substrate does the enzyme catalase act on?
Select one:
1. What can be determined by the electrons in the outermost shell of
an atom?
Select one:
a. weight.
b. chemical behavior.
c. mass.
d. shape.
e. atomic number.
2. What two molecules enter the citric acid cycle?
Select one:
a. two 3-carbon compounds and 38 ATPs.
b. 2-carbon compound and 4-carbon acetyl CoA.
c. 4-carbon compound and an acetyl CoA.
d. glucose and a fructose.
e. a pyruvic acid and a glucose.
3. Enzymes assist organisms in chemical reactions by _______.
Select one:
a. raising the activation energy.
b. bringing energy in the form of ATP molecules into cells.
c. sending ATP molecules out of cells.
d. creating more efficient metabolic pathways.
e. lowering the activation energy.
4. As hydrogen ion concentration decreases, the pH number
Select one:
a. stays the same.
b. approaches 14.
c. gets smaller.
d. becomes negative.
5. What is primarily contained within a nucleolus?
Select one:
a. DNA and protein.
, Exam 1 Bio 207
b. RNA and protein.
c. DNA and lipid.
d. RNA and DNA.
e. RNA and lipid.
6. What type of inorganic substances usually dissociate in water?
Select one:
a. carbohydrates.
b. electrolytes.
c. lipids.
d. organic compounds.
e. non-electrolytes.
7. What correctly describes the body while it is in the anatomical
position?
Select one:
a. standing erect with face turned to the side
b. lying on the back with the face turned to the side
c. lying on the back with the face forward
d. standing erect with the upper limbs reaching over the head
e. standing erect with the face forward
8. Select the elements that make up 95% (by weight) of the human
body.
Select one:
a. sodium, calcium, nitrogen, selenium
b. carbon, hydrogen, oxygen, nitrogen
c. carbon, hydrogen, selenium, sodium
d. carbon, hydrogen, oxygen, calcium
e. carbon, hydrogen, calcium, nitrogen
9. What part of an ATP molecule holds the energy used in
metabolism?
Select one:
a. the phosphate bonds.
, Exam 1 Bio 207
b. the sugar.
c. the nitrogen-containing base.
d. the amino acid.
e. the adenine.
10. The number of _______ vary in the atoms of the isotopes of a
particular element.
Select one:
a. nuclei.
b. protons.
c. neutrons.
d. electrons.
e. electron shells.
11. The molecular formula for compounds like potassium
chloride (KCl) give the relative amounts of each element present.
Select one:
True
False
12. The anticodon sequence is part of a ribosomal RNA.
Select one:
True
False
13. What is the process called where kidneys cleanse the blood?
Select one:
a. facilitated diffusion.
b. active transport.
c. exocytosis.
d. protein synthesis.
e. filtration.
14. What substrate does the enzyme catalase act on?
Select one:
