Which of the following is not a function of cholesterol in animal cell membranes?

Increases fluidity at moderate temperatures

Which of the following is not a property of facilitated diffusion?

Transport is not inhibited by competition

What is chemical energy?

The potential energy stored in bonds between atoms

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Module 2 BIOL103 Part A

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A quiz for module 2, Part A of the BIOL103 exam. #UoW #BIOL103

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Questions 108

Answers

1
Which of the three compoenents of the cytoskeleton are more permanent?
Intermediate filaments
Microtubules
Microfilaments
2
Which organelle is the site for cellular respiration?
Mitochondria
Nucleus
Ribosome
Endoplasmic reticulum
3
What two substrates make up ribosomes?
rRNA and proteins
rRNA and lipids
Proteins and tRNA
mRNA and proteins
4
How efficient is the energy conversion in cells?
20%
40%
10%
30%
5
Which of the following types of tissue give rise to the glandular tissue of endocrine glands?
Nervous
Epithelial
Muscular
Connective
6
Metabolic rate is not dependent on?
Energy expenditure
Food and water availability
Gender
Environmental temperature
7
What is the diameter of prokaryotic cells?
2 micrometres
4 micrometres
1 micrometre
3 micrometres
8
The arrangement of a molecular bilayer by lipids is:
Not spontaneous
Spontaneous
9
What is the first step of the signal transduction pathway?
Activation
Transduction
Reception
Response
10
The extensive network of proteins and polysaccharides that fills the spaces between cells is:
Interstitial fluid
Plasma
Serum
The extracellular matrix
11
Where do organelles and other subcellular components lie in eukaryotic cells?
Cytosol
Nucleosol
Nucleus
Cytoplasm
12
Which type of signal uses secreting (not to be confused with endocrine) cells?
Synaptic
Endocrine
Endothelial
Paracrine
13
How many membranes surround the nucleus?
Four
Three
Two
One
14
What type of junction provides a pathway of low electrical resistance?
Communicating
Anchoring
Gap
Tight
15
Which type of active transport uses co-transporters?
Secondary
Primary
16
Which of the following is not a function of cholesterol in animal cell membranes?
Reduces phospholipid movement
Disrupts regular packaging of phospholipid
Increases fluidity at low temperatures
Increases fluidity at moderate temperatures
17
Why do lipids produce the most energy?
They are in a reduced state
They are in an oxidised state
18
What is the difference between simple and stratified?
Simple has multiple layers
Stratified has 1 layer
Simple has 1 layer
19
Which of the following is not a basic feature of a cell?
Chromosomes
Nucleus
Plasma membrane
Ribosomes
20
Which of the following can not cross the selectively permeable barrier freely?
Water
Carbon dioxide
Oxygen
Ammonia
21
What are three types of membranes?
All the above
Amphitropic
Integral
Peripheral
22
Glial cells support nervous tissue
False
True
23
Which of the following is not a form of intracellular junction?
None of the answers
Anchoring
Communication
Occluding
24
What is the basic structural and functional unit of living organisms?
Organeles
Elements
Atoms
Cells
25
Which of the following is not a component of the cytoskeleton?
Macrotubules
Microtubules
Intermediate filaments
Microfilaments
26
Which of the following is not a function of the smooth ER?
Detoxifies drugs and poisons
Metabolizes carbohydrates
Synthesis of protein
Stores calcium ions
27
Which of the following is not a property of facilitated diffusion?
Transport proteins are specific
Transport proteins can become saturated
Faster than regular diffusion
Transport is not inhibited by competition
28
Can mitochondria be seen using a light microscope?
No
Yes
29
What is the dominant feature of eukaryotic cells?
Nuclear envelope
Ribosomes
Nucleoid
Nucleus
30
According to the second law of thermodynamics, the entropy of the universe is:
Remaining constant
Decreasing
Increasing
Decelerating
31
What type of enzymes are contained in lysosomes? (best answer)
Hydroxylytic enzymes
Anabolic enzymes
Hydrolytic enzymes
Catabolic enzymes?
32
Which of the following is not a characteristic of stroma?
Internal fluid
Contains ribosomes
Contains the chloroplast DNA
A membranous sac
33
Rate of diffusion depends on
Permeability
Both
Magnitude of concentration gradient
34
A group of specialised cells of similar structure and function is known as a(n):
Organ system
Cell cluster
Tissue
Functional unit
35
What is chemical energy?
The energy stored in uranium
The usage of ATP
The kinetic energy used by food
The potential energy stored in bonds between atoms
36
What type of fibre makes up cell walls?
Amylose
Cellulose
Chitin
Starch
37
Which domains contain prokaryotic cells?
Archaea and Eukaryota
Bacteria and Eukaryota
Archaea and Bacteria
Arachaea and Prokaryota
38
What chemical does peroxisomes produce?
Hydrogen peroxide
Hydrogen chloride
Sulfurce acid
Hydrogen iodide
39
What type of proteins make up connexons?
Intramembranes
Extramembranes
Unimembranes
Transmembranes
40
Which is faster?
Carrier
Channel
41
How many polypeptide chains make up collagen?
1
4
2
3
42
Which metabolic pathway is involved in the synthesis of amino acids?
Catabolism
Anabolism
43
What organelle is a member of the family of plastids?
Cytoskeleton
Vacuole
Mitochondria
Chloroplasts
44
Membranes are:
Symmetrical
Asymmetrical
45
From what type of energy do we get heat?
Kinetic energy
Potential energy
Chemical energy
Thermal energy
46
What is the plasmodesmata?
Directly link bacteria
Directly link plant cells
Directly link fungi
Directly link animal cells
47
Do membrane proteins attach of float in the lipid bilayer?
Attach
Float
48
Where does the action of an organism begin?
Cellular level
Tissue level
Atomic level
Subcellular level
49
What form of junction is a desmosome?
Anchoring
Tight
Occluding
Communicating
50
Which of the following is not absent in prokaryotes?
Mitochondria
Nucleus
Vacuoles
Ribosomes
51
What makes up the protoplasm?
Nucleus and mitochondria
Cytoplasm and nucleus
Cytosol and nuclear envelope
Cytosol and nucleus
52
Which of the following is not a component of the endomembrane system?
Nucleus
Nuclear envelope
Lysosomes
Plasma membrane
53
Which face of the cisternae (golgi apparatus) faces the cisterna of the ER?
Trans face
Cis Face
54
Trehalose if the blood sugar for?
Plants
Insects
Vertebrates
Birds
55
What does the endomembrane system regulate?
Lipid traffic
Stabilisation of the cell
Metabolic functions
Protein traffic
56
Rapid movement of ions across a membrane is mediated by:
Exocytosis
Channels
Carriers
Transport ATPases
57
Where are ribosomes assembled?
Nucleolus
Cytoplasm
Mitochondria
Nucleus
58
According to the first law of thermodynamics, the total energy of the universe:
Remains constant
Is increasing
Is decreasing
Is reversing
59
When Gibbs free energy is negative:
It is exergonic
It is endergonic
60
What would be the consequence if someone was transfused intravenously with distilled water?
The RBC would shrink
The RBC would burst
The RBC would stay the same
The RBC would be supported by the cell wall and not change
61
Diffusion is from:
Low concentration to high concentration
High concentration to low concentration
62
Which metabolic pathway releases energy?
Catabolism
Anabolism
63
What is the limit of human eye's resolution?
300 micrometres
100 micrometres
200 micrometres
400 micrometres
64
Which type of a cell lacks a membrane bound nucleus?
Eukaryotic
Prokaryotic
65
When does a spontaneous reaction occur?
When Gibbs free energy is 0
When Gibbs free energy is positive
When Gibbs free energy is negative
66
How many functions do membrane proteins have?
5
4
7
6
67
Enzymes are used to:
Decrease activation energy
Decrease activation energy and increase speed
Lower speed
Increase activation energy
68
Plant cell walls:
Have strong micro fibrils and pectin that resist stretching
Are predominantly composed of proteins
Are soft and pliable
Are predominantly composed of polysaccharides
69
What structure contains high concentrations of RNA, protein and DNA?
Nucleoli
Nuclear pores
HELP!!!
Nuclear Envelope
70
Which of the following is only present in plants, algae and some protozoa?
Lysosomes
Chloroplasts
Cytoskeleton
Vesicles
71
Which type of activate transport uses directly coupling of ATP for energy?
Secondary
Tertiary
Quaternary
Primary
72
Permeability of molecules depends on?
Size
Lipid solubility
All the above
Electrical charge
73
Plastids are found in what type of cell?
All cells
Plant and algal cells
Prokaryotes only
All eukaryotic cells
74
Whcih organelle produces pectin?
Nucleus
ER
Chloroplasts
Golgi apparatus
75
Which of the following is not a function of vacuoles?
Maintenance of cell turgor pressure
Storage of nutrients, pigments or waste materials
Contains hydrolytic enzymes
Production of lysosomes
76
Can chloroplasts move around the cell?
No
Yes
77
How many main types of muscle tissue do we have?
4
3
1
2
78
Which part of the ER has ribosomes embedded?
Smooth ER
Rough ER
79
What charge on polysaccharides attract cations?
Strong positive
Weak negative
Strong negative
Weak postive
80
How many components make up the endomembrane system?
4
6
5
7
81
Which of the following is not a characteristic of prokaryotic cells?
Cytoplasm bound by the plasma membrane
Vacuole
A nucleoid
No nucleus
82
Microtubules
Nne of the above
Have a distinct protein
Are composed of tubulin
Are composed of actin
83
Neurons are able to divide
False
True
84
How many types of activate transport are there?
4
3
1
2
85
Carrier proteins in the plasma membrane are required for?
Facilitated diffusion and Active transport
Diffusion
Activate transport
Facilitated diffusion
86
Which structural protein recoils to its original shape?
Fibronectin
Elastin
Laminin
Collagen
87
The amount of energy that is available to do work is known as?
Entropy
Why is chemistry in biology?!!!
Enthalpy
Gibbs Free Energy
88
Which organelle accounts for more than half of the total membrane in eukaryotic cells?
Mitochondria
Nuclear envelope
Endoplasmic reticulum
Golgi apparatus
89
If a red blood cell is placed in an isotonic solution, what happens?
It crenates
The movement of water going in is the same as going out
It remains normal
It bursts
90
How many membranes surround mitochondria?
3
4
1
2
91
What are the 3 main components of the ECM?
Polysaccharides
Structural protains
All of the above
Adhesive proteins
92
Does a spontaneous reaction require energy input?
No
Yes
93
Which of the following is not a component of ATP?
Adenine
Triphosphate group
Cytosine
Ribose sugar
94
Which of the following is not affected by adhesive proteins?
Migration
Cell polarity
Growth
None of the above
95
Which of the bonds are not used for fuel extraction?
C-H
C-O
C-C
C-N
96
Which of the following is a difference betweenplant and animal cells?
Plasma membrane
Ribosomes
Flagella
Mitochondria
97
Which type of junction prevents molecules passing the extracellular space between cells?
Anchoring
Communicating
Tight
98
Which undergoes a conformational change?
Carrier
Channel
99
Which of the following fibres are not found in connective tissue?
Elastin
Recticulin
Collagen
Actine
100
Which of the following is not a function of the cell wall?
Protection
None of the above
Prevents excessive uptake of water
Maintenance of shape
101
The 2 main forms of the extracellular matrix are: (pick 1)
Plasmodesmata
Basal lamina
Interstitial matrix
Epithelial conjugates
102
Which of the following animal tissues receives signals?
Connective
Nervous
Epithelial
Muscular
103
'in organisms, much of the work involves the transfer of energy' is referred to as?
Bioinformatics
Bioenergetics
The first law of thermodynamics
The second law of thermodynamics
104
How do peripheral proteins attach via?
Covalent interaction
Non-polar interactions
Polar interactions
Non-covalent interactions
105
Which type of solution has a higher solute concentration and lower water concentration?
Hypotonic
Isotonic
Still need to revise this
Hypertonic
106
How efficient is energy transfer?
100%
Never 100%
107
What type of transport moves against the concentration gradient?
Diffusion
Active transport
Passive transport
Osmosis
108
When a plant cell is placed in a hypo-osmotic solution the cell wall will prevent:
The cell from bursting
Diffusion
Active transport
Plasmolysis

Module 2 BIOL103 Part A Flashcards | StudBud