BIO 189 EXAM 2 STUDY GUIDE 2025/2026
COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES ||
100% GUARANTEED PASS
<RECENT VERSION>
1. A group of cells interacting and functioning together form. - ANSWER ✓
Tissue
2. Select all of the following that are organs.
A. blood
B. heart
C. neuron
D. human eye
E. stomach - ANSWER ✓ B. heart
D. human eye
E. stomach
3. The stomach, small intestine, and the large intestine interact to form part of
a(an).
A. cell body
B. tissue
C. organ
D. organ system - ANSWER ✓ D. organ system
4. Connective muscle, ________ and ___________ tissues are the four broad
categories of tissues in animals. - ANSWER ✓ Nervous, epithelial
5. Epithelial tissue that is Single layer, flattened, lines blood vessels. -
ANSWER ✓ Simple squamous
6. Epithelial tissue with single layer, found in glands. - ANSWER ✓ Simple
cuboidal
,7. Epithelial tissue with multiple layers, found in outer layers of skin -
ANSWER ✓ Stratified squamous
8. Epithelial tissue with single layer, line digestive tract - ANSWER ✓ Simple
columnar
9. A tissue is composed of.
A. an organ and the cells that support it
B. groups of cells interacting to provide a specific function
C. proteins, minerals, and fibers that form a ground substance for
anchoring cells
D. two or more organs that are physically or functionally joined -
ANSWER ✓ B. groups of cells interacting to provide a specific
function
10.What type of cells are found on the body's surface? - ANSWER ✓ Epithelial
11.An ________ consists of two or more interacting tissues that function as a
unit. - ANSWER ✓ Organ
12.Select all the functions of epithelial tissue.
A. communication of electrical signals
B. gas diffusion
C. flexible support
D. protection
E. nutrient absorption
F. contraction - ANSWER ✓ B. gas diffusion
D. protection
E. nutrient absorption
13.What describes an organ system. - ANSWER ✓ Multiple organs
functionally joined
14.Organs that are made of epithelial tissue and that secrete different substances
such as sweat, saliva, hormones, breast milk, and tears.
A. Vessels
B. lymph nodes
C. ganglia
, D. glands - ANSWER ✓ D. glands
15.Which level of protein structure is the smallest structure to form a functional
protein? - ANSWER ✓ Primary
16.Which nitrogenous base is present in RNA but NOT in DNA - ANSWER ✓
Uracil
17.Alkane - ANSWER ✓ a hydrocarbon containing only single covalent bonds.
Cn H2n + 2
18.Alkene - ANSWER ✓ double bond between carbons. Cn H2n
19.Alkyne - ANSWER ✓ carbon-carbon triple bond. Cn H2n - 2
20.H (Hydrogen) - ANSWER ✓ 1
21.C (Carbon) - ANSWER ✓ 4
(Oxygen) - ANSWER ✓ 6
22.N (Nitrogen) - ANSWER ✓ 5
23.OH - ANSWER ✓ linear hydroxyl
24.SH - ANSWER ✓ sulfhydryl
25.Carbonyl - ANSWER ✓ C=O
26.Carboxyl - ANSWER ✓ O=C-OH
27.Amino - ANSWER ✓ H-N-H
28.Phosphate - ANSWER ✓ PO4 charge -3
29.Methyl - ANSWER ✓ CH3
, 30.nucleic acids - ANSWER ✓ DNA and RNA
31.Nucleotide - ANSWER ✓ monomer of nucleic acids made up of a 5-carbon
sugar, a phosphate group, and a nitrogenous base
32.Types of bases - ANSWER ✓ purines and pyrimidines
33.Prions - ANSWER ✓ infectious proteins
34.sickle cell anemia - ANSWER ✓ a genetic disorder that causes abnormal
hemoglobin, resulting in some red blood cells assuming an abnormal sickle
shape
35.DNA structure - ANSWER ✓ antiparallel double helix
36.Denaturation - ANSWER ✓ loss of normal shape of a protein due to heat or
other factor
37.primary structure - ANSWER ✓ sequence of amino acids/no bonds
38.secondary structure - ANSWER ✓ either an alpha helix or beta pleated
sheet. has hydrogen bonds
39.tertiary structure - ANSWER ✓ a helix + B sheet + hydrophobic acids all
together
40.quaternary structure - ANSWER ✓ when tertiary connects to another tertiary
41.Cytoskeleton - ANSWER ✓ Internal support structures/ train track
42.Microtubules - ANSWER ✓ maintain cell shape
43.Metabolism - ANSWER ✓ the chemical processes that occur within a living
organism in order to maintain life.
44.Catabolism - ANSWER ✓ breaking down
COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES ||
100% GUARANTEED PASS
<RECENT VERSION>
1. A group of cells interacting and functioning together form. - ANSWER ✓
Tissue
2. Select all of the following that are organs.
A. blood
B. heart
C. neuron
D. human eye
E. stomach - ANSWER ✓ B. heart
D. human eye
E. stomach
3. The stomach, small intestine, and the large intestine interact to form part of
a(an).
A. cell body
B. tissue
C. organ
D. organ system - ANSWER ✓ D. organ system
4. Connective muscle, ________ and ___________ tissues are the four broad
categories of tissues in animals. - ANSWER ✓ Nervous, epithelial
5. Epithelial tissue that is Single layer, flattened, lines blood vessels. -
ANSWER ✓ Simple squamous
6. Epithelial tissue with single layer, found in glands. - ANSWER ✓ Simple
cuboidal
,7. Epithelial tissue with multiple layers, found in outer layers of skin -
ANSWER ✓ Stratified squamous
8. Epithelial tissue with single layer, line digestive tract - ANSWER ✓ Simple
columnar
9. A tissue is composed of.
A. an organ and the cells that support it
B. groups of cells interacting to provide a specific function
C. proteins, minerals, and fibers that form a ground substance for
anchoring cells
D. two or more organs that are physically or functionally joined -
ANSWER ✓ B. groups of cells interacting to provide a specific
function
10.What type of cells are found on the body's surface? - ANSWER ✓ Epithelial
11.An ________ consists of two or more interacting tissues that function as a
unit. - ANSWER ✓ Organ
12.Select all the functions of epithelial tissue.
A. communication of electrical signals
B. gas diffusion
C. flexible support
D. protection
E. nutrient absorption
F. contraction - ANSWER ✓ B. gas diffusion
D. protection
E. nutrient absorption
13.What describes an organ system. - ANSWER ✓ Multiple organs
functionally joined
14.Organs that are made of epithelial tissue and that secrete different substances
such as sweat, saliva, hormones, breast milk, and tears.
A. Vessels
B. lymph nodes
C. ganglia
, D. glands - ANSWER ✓ D. glands
15.Which level of protein structure is the smallest structure to form a functional
protein? - ANSWER ✓ Primary
16.Which nitrogenous base is present in RNA but NOT in DNA - ANSWER ✓
Uracil
17.Alkane - ANSWER ✓ a hydrocarbon containing only single covalent bonds.
Cn H2n + 2
18.Alkene - ANSWER ✓ double bond between carbons. Cn H2n
19.Alkyne - ANSWER ✓ carbon-carbon triple bond. Cn H2n - 2
20.H (Hydrogen) - ANSWER ✓ 1
21.C (Carbon) - ANSWER ✓ 4
(Oxygen) - ANSWER ✓ 6
22.N (Nitrogen) - ANSWER ✓ 5
23.OH - ANSWER ✓ linear hydroxyl
24.SH - ANSWER ✓ sulfhydryl
25.Carbonyl - ANSWER ✓ C=O
26.Carboxyl - ANSWER ✓ O=C-OH
27.Amino - ANSWER ✓ H-N-H
28.Phosphate - ANSWER ✓ PO4 charge -3
29.Methyl - ANSWER ✓ CH3
, 30.nucleic acids - ANSWER ✓ DNA and RNA
31.Nucleotide - ANSWER ✓ monomer of nucleic acids made up of a 5-carbon
sugar, a phosphate group, and a nitrogenous base
32.Types of bases - ANSWER ✓ purines and pyrimidines
33.Prions - ANSWER ✓ infectious proteins
34.sickle cell anemia - ANSWER ✓ a genetic disorder that causes abnormal
hemoglobin, resulting in some red blood cells assuming an abnormal sickle
shape
35.DNA structure - ANSWER ✓ antiparallel double helix
36.Denaturation - ANSWER ✓ loss of normal shape of a protein due to heat or
other factor
37.primary structure - ANSWER ✓ sequence of amino acids/no bonds
38.secondary structure - ANSWER ✓ either an alpha helix or beta pleated
sheet. has hydrogen bonds
39.tertiary structure - ANSWER ✓ a helix + B sheet + hydrophobic acids all
together
40.quaternary structure - ANSWER ✓ when tertiary connects to another tertiary
41.Cytoskeleton - ANSWER ✓ Internal support structures/ train track
42.Microtubules - ANSWER ✓ maintain cell shape
43.Metabolism - ANSWER ✓ the chemical processes that occur within a living
organism in order to maintain life.
44.Catabolism - ANSWER ✓ breaking down
