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IB Biology Revision Flashcards | StudBud
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IB Biology Revision
IB Biology Revision
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#biology #ib
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Analogous structures are similar because of
Convergent evolution
Common ancestry
Artifical selection
Identical appearance
2
The binomial system of nomenclatures used by scientist is
To avoid confusion in translation
An international system of nomenclature
A means of classifying species
To give names to new species
3
Proteins are polymers with a large range of structures and functions because
They are made of amino acids which are amphoteric
Each individual has a unique proteome
They can be folded into different three dimensional shapes
They contain the element nitrogen
4
The roundworm has a diploid chromosome number 12. How many are in the haploid cell?
6
24
0
12
5
Which two processes are used in DNA profiling
Gene transfer and PCR
PCR and karyogram
PCR and gel eletcrophoresis
Gene transfer and gel electrophoresis
6
Which of the following properties is necessary for emergent properties to occur?
The system is complex
The system Is evolving
Cells or tissues interact to function as a unit
Cells or tissues are differentiated
7
What is in the correct order of mitosis
Anaphase, prophase, metaphase, telophase
Prophase, metaphase, anaphase, telophase
Prophase, anaphase, metaphase, telophase
Prophase, metaphase, telophase, anaphase
8
Which unit is most commonly used to measure annual carbon fluxes?
Gigatonnes
Grams
Tonnes
Megatonnes
9
Which statement best describes the movement of water molecules in osmosis?
From concentrated to a dilute solution using energy from ATP
From concentrated to dilute solution across a membrane
From dilute to concentrated across a membrane using ATP
From dilute to more concentrated solution across a membrane
10
Crick and Watson elucidated the structure of DNA using which of the following?
Condensation reaction
Model making
X-ray crystallography
Gel eletcrophoresis
11
The hierarchy of taxa from the group containing the highest number of species is …
Kingdom, Family, Class, Order, Phylum, Genus, Species
Kingdom, Phylum, Class, Order, Family, Genus, Species
Groups of Phyla with increasing numbers of species
Three domains of life containing many Phyla
12
Where in the human heart would the pressure of the blood be highest?
Coronary artery
Left atrium
Left ventricle
Right ventricle
13
Florey an Chain tested penicillin on
Pneumonia
Viral infections in mice and humans
Bacterial infections in mice
Bacterial infections in mice and humans
14
How did Pasteur’s experiment demonstrate that cells only come from pre-existing cells?
Showed that sterile broth would not ferment with air alone
Showed that broth would not ferment if sterile
Showed that the air contained microbes
Showed that sterile broth fermented in contact with air
15
The myelination of nerve fibres causes:
Use of less neurotransmitter
Sensory stimulation
More accurate nervous transmission
Saltatory conduction
16
Taq DNA polymerase could be used to
Produce multiple copies of DNA in laboratory conditions
Remove a portion of a DNA sample for testing
Initiate transcription in a cell
Identify the DNA of a person at a crime scene
17
The figwort family has been reclassified based on what evidence...
Chloroplast DNA
Use of microscope
Histological studies
Ribosome size
18
Which of the following can cause new alleles to form and may lead to genetic diseases?
Variation
Radiation
Mitosis
Meiosis
19
If 2 populations sepearated by a physical barrier could successfully interbreed then they are..
2 groups
2 different species
2 sub-species
1 species
20
Depolarisation of the neuron membrane is caused by
Outflow of potassium ions
Opening of sodium channels
The sodium pump
Active transport
21
The characteristics that develop during the lifetime of an individual are
Acquired
Heritable
Inherited
22
Why is the donor organ placed in an isotonic solution-same concentration as the cell cytoplasm
The organ is delicate
The organ must not lose or gain water
The donated organ requires oxygen
The organ must take up minerals from the solution
23
What is the major factor that restricts the length of food chains?
Predation
Energy losses
Food availability
Size of top carnivores
24
In what form is energy lost from the ecosystem?
Heat
Excretion
Egestion
Light
25
When Wohler synthesised urea, it falsified which theory?
Creationism
Vitalism
Spontaneous Generation
None of the above
26
An endemic species best described as a species that is found …
In a certain geographic area
On an island
After speciation
Breeding with other species
27
Which of the following events happens during mitosis in a plant cell?
Sister chromatids attach to each other at the centromere
Cell wall formation
Chloroplasts duplicate
Condensation of chromosomes
28
Which of the following statements is a correct summary of inspiration?
Diaphragm flattens and rib moves up/out,decreasing pressure
Diaphragm/rib cage move down and flatten,decreasing pressure
29
When a dipeptide is formed from two amino acids which type of reaction takes place?
Hydrolysis reaction
Condensation of reaction
Denaturing of amino acids
A catabolism reaction
30
Which statement best describes the role of plants and algae in an ecosystem?
Most are autotrophs
All are producers
Some are symbionts
All are autotrophs
