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DP Bio Exam Review Topics 4-6 Flashcards | StudBud
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DP Bio Exam Review Topics 4-6
DP Bio Exam Review Topics 4-6
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1
What is the name of Ms. Glanville's OTHER cat?
Sputnik
Spots
Saffron
Stinky
2
Which organisms produce methane in anaerobic environments such as waterlogged soils?
Archaea
Eukaryotes
Fungi
Eubacteria
3
Which is an example of natural selection?
A giraffe stretching its neck to reach higher leaves
Development of antibiotic resistance in bacteria
A juvenile bird learning to sing
Selective breeding of tail-less cats
4
The body has different defenses against infectious disease. Which cells provide non-specific immunity?
Memory cells
Phagocytic white blood cells
Hybridoma cells
Plasma cells
5
What causes the atrioventricular valves to close during a heartbeat?
Pressure in the atria is higher than in the ventricles.
Pressure in the arteries is lower than in the ventricles.
Pressure in the atria is lower than in the ventricles.
Pressure in the arteries is higher than in the ventricles.
6
A plant has cambium in vascular tissue, pollen produced in male cones, disperses seeds but does not produce fruit.
Filicinophyta
Bryophyta
Angiospermophyta
Coniferophyta
7
What is exchanged between a sealed mesocosm and the surrounding external environment?
Air
Nothing can pass
Water
Energy
8
In addition to carbon dioxide, which of these greenhouse gases is the most significant?
Ozone
Methane
Nitrogen oxides
Water vapour
9
What describes a possible cause of a negative carbon flux in the atmosphere due to influence of a forest ecosystem?
The trees grew more so fixed more carbon dioxide.
There was more decomposition of leaf litter.
There was more respiration by soil organisms.
There was more burning of forests.
10
Which is not essential in a viable mesocosm?
Saprotroph
Herbivore
Light source
Autotroph
11
Which cells are subject to attack by HIV?
Lymphocytes
Phagocytes
Platelets
Erythrocytes
12
Which invertebrate phylum is characterized by a segmented body and bilateral symmetry?
Arthropoda
Mollusca
Porifera
Cnidaria
13
How Florey and Chain’s penicillin experiments out of compliance with today’s standards?
They did animal testing.
They used lethal quantities of bacteria during their tests.
They did not use sterile technique for culturing the bacteria.
They tested on humans after animal testing with only eight mice.
14
How does potassium move across the membrane of a neuron during repolarization?
Active transport
Simple diffusion
Facilitated diffusion
Endocytosis
15
What is the reason for antibiotics not damaging human cells?
Antibiotics occur naturally in humans.
The dose is taken for only a short time.
Human metabolism is different from bacterial metabolism.
The dose is too small to be harmful.
16
Which feature of capillaries distinguishes them from arteries and veins?
Valves to prevent backflow
Narrow diameter
Elastic tissue
Thick muscular walls
17
Which process increases the size of the carbon sink in oceans?
Respiration
Photosynthesis
Decomposition
Ocean acidification
18
The combustion of fossil fuels has increased CO2 ocean concentrations. How does this affect marine life?
Corals deposit less calcium carbonate to form skeletons.
Increased pH reduces enzyme activity in marine organisms.
Phytoplankton have increased rates of photosynthesis.
Heterotrophs consume more phytoplankton.
19
Which is the hierarchy of taxa in order of decreasing numbers of species?
domain, phylum, order, family
phylum, class, family, order
phylum, order, family, class
domain, phylum, order, class
20
What would restrict evolution by natural selection, if a species only reproduced by cloning?
The offspring would show a lack of variation.
Too few offspring would be produced.
Mutations could not occur.
The offspring would be the same sex as the parent.
21
The pitcher plant is a green plant that traps and feeds on live insects. What is this plant’s mode of nutrition?
Autotroph and detritivore
Consumer and saprotroph
Autotroph and heterotroph
Producer and saprotroph
22
Which part of the body secretes amylase, lipase and endopeptidase for use in the digestion of food?
Stomach
Pancreas
Small intestine
Mouth
23
Which pituitary hormones regulate the human menstrual cycle?
FSH and LH
HCG and estrogen
FSH and oxytocin
Progesterone and estrogen
24
What is a feature of the left atrium?
Epinephrine decreases its rate of contraction.
It contracts as the left ventricle contracts.
It receives blood from the left pulmonary artery.
Its pressure decreases as the left ventricle fills up.
25
What occurs as a result of a cut in the skin of a finger?
Platelets produce antibodies to prevent infection.
Clotting factors are released from red blood cells.
Fibrin is converted to insoluble fibrinogen.
Prothrombin is transformed into thrombin.
26
What information can be deduced from the sequence of nodes in a cladogram?
The number of mutations that have occurred since the last common ancestor
The geological period when the species diverged from a common ancestor
The number of characteristics the species have in common
The probable sequence of divergence among the species in the clade
27
What is a property of arteries?
Arteries have elastic walls.
All arteries carry oxygenated blood.
Arteries have valves.
Arteries receive blood from the atria.
28
An animal has: bilateral symmetry, mouth but no anus, ribbon shape. Which phylum does the animal belong to?
Annelida
Platyhelmintha
Cnidaria
Mollusca
29
What is the role of type II pneumocytes?
To keep the alveoli moist
To increase surface tension
To carry out gas exchange
To maintain partial pressures of gases
30
Which is a characteristic of both bryophyta and filicinophyta?
Evergreen spines
Membranous leaves
Vascular tissue
Release of spores
31
What reduces variation in a population?
Meiosis
Mutation
Natural selection
Sexual reproduction
32
Where in the body are type I pneumocytes found?
Alveoli
Trachea
Capillaries
Nephrons
33
What is a function of luteinizing hormone (LH) in the female menstrual cycle?
To trigger ovulation
To inhibit progesterone secretion
To promote secondary sexual characteristics
To stimulate the follicle to release estrogen
34
Which hormone regulates the hours of sleep and wakefulness?
Thyroxine
Insulin
Melatonin
Leptin
35
What is a direct consequence of the overproduction of offspring?
They will suffer mutations.
They will diverge to produce different species.
They will be subject to intraspecific competition.
Individuals become more adapted to the environment.
36
What are the biochemical nature and function of the myelin sheath?
The myelin sheath is mainly protein which acts as membrane carriers.
The myelin sheath is mainly lipid which allows saltatory conduction.
The myelin sheath is mainly protein which allows growth of the axon.
The myelin sheath is mainly lipid which provides an energy source.
37
Which phylum shows radial symmetry?
Platyhelmintha
Porifera
Cnidaria
Annelida
38
What is the function of the hormone leptin?
Promote sleep
Reduce appetite
Increase metabolic rate
Increase the uptake of glucose from the blood
39
What process is blocked by neonicotinoid pesticides in insects?
Binding of neurotransmitters to postsynaptic acetylcholine receptors
Release of the neurotransmitter
Transmission of the nerve impulse in the presynaptic neuron
Formation of the synaptic vesicles
40
What helps to regulate the levels of glucose in blood?
Kidneys and liver
Glycogen and insulin
Insulin and glucagon
Digestion and respiration
41
The pentadactyl limbs of mammals, birds, reptiles and amphibians are examples of which kind of structures?
Convergent
Homologous
Vestigial
Analogous
42
Which hormone controls metabolic rate?
Melatonin
Insulin
Glucagon
Thyroxin
43
A fluid sample is basic and able to digest starch and proteins. From where was the fluid taken?
Small intestine
Gall bladder
Mouth
Stomach
44
What term is used to describe all of the marine organisms living in and on the hull of a sunken ship?
An ecological niche
An ecosystem
A community
A population
45
What restricts the length of a food chain?
A greater biomass at the higher trophic levels
Energy losses between the trophic levels
The number of species in the food web
The consumption of waste by detritivores
46
Which vessel carries deoxygenated blood away from the heart?
Pulmonary artery
Pulmonary vein
Aorta
Vena cava
47
What material is formed when organic matter is not fully decomposed in acidic waterlogged soils?
Peat
Coal
Oil
Hydrogen
48
What is a characteristic of antigens?
They cause disease in humans
They recognize foreign substances
They stimulate the production of antibodies
They are produced in bone marrow
49
What process best explains the formation of different pentadactyl limbs?
Adaptive radiation
Interbreeding
Selective breeding
Convergence
50
What causes variation within a population?
Fertilization and mutation
Mutation and evolution
Evolution and adaptive radiation
Fertilization and change in the environment
51
Which characteristic of water vapour classifies it as a greenhouse gas?
It absorbs and re-emits long wave radiation emitted by the Earth’s surface.
It prevents short wave radiation from reaching the Earth’s surface.
It absorbs UV radiation but does not re-emit it.
It absorbs infra-red radiation but does not re-emit it.
52
What is the major contributor to the increase in antibiotic resistance in bacteria?
Sexual reproduction
Mutation
Natural selection
New antibiotics
53
Which activity directly contributes the most to recent increases in atmospheric CO2 concentrations?
Planting trees
Cattle rearing
Landfills
Burning of fossil fuels
54
In which domain are bryophyta found?
Eukaryote
Eubacteria
Plantae
Archaea
55
Where in the human body is lipase produced?
Stomach
Gall bladder
Pancreas
Liver
56
What is the classification of an organism that is able to make organic compounds from inorganic nutrients?
Detritivore
Saprotroph
Autotroph
Consumer
57
What is the main method of transport of monosaccharides such as fructose across the intestinal epithelium?
Facilitated diffusion
Active transport
Osmosis
Endocytosis
58
What helps to keep blood flowing onwards away from the heart in an artery?
Having a wide lumen
Elastic fibres
Contraction of skeletal muscles
Valves
59
If seeds of an unknown species of plant are discovered, what assumption can be made about the species?
Its seeds are contained within fruits.
It is in the phylum angiospermophyta.
Its male gametes are contained within pollen.
It is in the domain archaea
