Bio 1010 - General Biology » Summer 2022 » Unit 2 Exam
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Question #1
In a water molecule, hydrogen and oxygen are held together by a(an) ______ bond.
A.
nonpolar covalent
B.
polar covalent
C.
double covalent
D.
hydrogen
E.
ionic
Question #2
Which of the following is an acid?
A.
H2O
B.
NaOH
C.
HCl
D.
CH4
E.
NaCl
Question #3
The primary structure of a protein is ______.
A.
maintained by hydrogen bonds
B.
an ∝ (alpha) helix or a pleated sheet
C.
the amino acid sequence of the polypeptide chain
D.
irregular folding
E.
composed of two or more polypeptide chains
Question #4
What is the name given to the reaction that breaks peptide bonds?
A.
hydrogenation
B.
synthesis
C.
anabolism
D.
hydrolysis
E.
denaturation
Question #5
Table sugar is ______.
A.
lactose
B.
glucose
C.
sucrose
D.
fructose
E.
maltose
Question #6
Which of the following is a function of the plasma membrane?
A.
control center of the cell
B.
protein synthesis
C.
intracellular digestion
D.
fat synthesis
E.
regulation of the passage of material into and out of the cell
Question #7
Which organelle is responsible for photosynthesis?
A.
mitochondrion
B.
ribosome
C.
nucleolus
D.
chloroplast
E.
smooth endoplasmic reticulum
Question #8
______ are the major lipids of plasma membranes.
A.
Phospholipids
B.
Mosaics
C.
Prostaglandins
D.
Steroids
E.
Triglycerides
Question #9
When digested, nucleic acids are broken down into ______.
A.
fatty acids
B.
amino acids
C.
monosaccharides
D.
nucleotides
E.
glycerols
Question #10
The function of the sphincter at the downstream end of the stomach is to ______.
A.
release acid chyme into the duodenum in periodic squirts
B.
retain acid chyme in the stomach until pepsin digestion is complete
C.
release bile and pancreatic secretions into the duodenum when chyme is present
D.
release pancreatic secretions into the duodenum when chyme is present
E.
release bile into the duodenum when chyme is present
Question #11
The stomach's gastric glands secrete ______.
A.
digestive enzymes only
B.
mucus, digestive enzymes, and hydrochloric acid
C.
mucus only
D.
hydrochloric acid only
E.
digestive enzymes and hydrochloric acid
Question #12
Which of the following nutrients begins undergoing digestion only when it reaches the small intestine?
A.
protein
B.
complex carbohydrate
C.
fat
D.
polypeptide
E.
starch
Question #13
Osmosis can be defined as ______.
A.
the diffusion of water
B.
the diffusion of nonpolar molecules
C.
active transport
D.
the diffusion of a solute
E.
endocytosis
Question #14
The fragrance of bread baking in a kitchen spreads to other rooms by
A.
selective permeation
B.
osmosis
C.
diffusion
D.
magic
E.
active transport
Question #15
The number of electrons surrounding an atom's nucleus never changes.
A.
False
B.
True
Question #16
Phosopholipids are found in cell membranes.
A.
True
B.
False
Question #17
When choosing the healthiest type of fat to include in a diet, an individual should include more saturated fat than unsaturated fat because saturated fat appears to decrease the risk of heart disease.
A.
False
B.
True
Question #18
Animal and plant cells contain organelles.
A.
True
B.
False
Question #19
Because they are not soluble in water, fats are digested in a different way than proteins and carbohydrates.
A.
False
B.
True
Question #20
Match the correct atomic structure to its description. a component of an atom that carries a negative charge
A.
iostope
B.
ionic bond
C.
atom
D.
covalent bond
E.
electron
Question #21
Match the correct atomic structure to its description. the smallest unit of matter
A.
covalent bond
B.
iostope
C.
atom
D.
ionic bond
E.
electron
Question #22
Match the correct atomic structure to its description. a bond that is formed when electrons are exchanged between atoms
A.
electron
B.
ionic bond
C.
covalent bond
D.
iostope
E.
atom
Question #23
Match the correct atomic structure to its description. a bond that is formed when electrons are shared between atoms
A.
electron
B.
covalent bond
C.
iostope
D.
ionic bond
E.
atom
Question #24
Match the correct atomic structure to its description. different forms of the same element that differ in the number of neutrons they contain
A.
atom
B.
electron
C.
covalent bond
D.
iostope
E.
ionic bond
Question #25
Match the description to its correct structure. six-carbon monosaccharide
A.
fiber
B.
glycogen
C.
glucose
D.
starch
E.
cellulose
Question #26
Match the description to its correct structure. storage form of carbohydrates in plants
A.
glycogen
B.
starch
C.
fiber
D.
glucose
E.
cellulose
Question #27
Match the description to its correct structure. plant cell wall
A.
starch
B.
glucose
C.
cellulose
D.
glycogen
E.
fiber
Question #28
Match the description to its correct structure. storage form of carbohydrates in animals
A.
starch
B.
glucose
C.
glycogen
D.
cellulose
E.
fiber
Question #29
Match the description to its correct structure. all indigestible polysaccharides
A.
glycogen
B.
starch
C.
cellulose
D.
glucose
E.
fiber
Question #30
Match the organ of the digestive system to its function. produces pepsin
A.
pharnyx
B.
mouth
C.
stomach
D.
small intestine
Question #31
Match the organ of the digestive system to its function. site of most digestion
A.
pharnyx
B.
stomach
C.
small intestine
D.
mouth
Question #32
Match the organ of the digestive system to its function. site of most absorption
A.
small intestine
B.
stomach
C.
pharnyx
D.
mouth
Question #33
Match the organ of the digestive system to its function. produces saliva
A.
pharnyx
B.
stomach
C.
mouth
D.
small intestine
Question #34
Match the organ of the digestive system to its function. epiglottis
A.
mouth
B.
pharnyx
C.
small intestine
D.
stomach
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