Draw the Core Label if you’re able Annotate if you’re great Stephen Taylor Draw the Core1.
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Transcript of Draw the Core Label if you’re able Annotate if you’re great Stephen Taylor Draw the Core1.
Draw the CoreLabel if you’re able
Annotate if you’re great
Stephen Taylor
http://sciencevideos.wordpress.com Draw the Core 1
Draw the Core
http://sciencevideos.wordpress.com Draw the Core 2
This presentation is for practice with assessment statements where you need to draw, label, annotate or where a diagram would be very helpful to describe, outline or identify.
One slide has the assessment statement. The next has the diagram and the last has the diagram with labels.
How could you use it in your revision?
• QuickDraw flashcards – can you draw the item in the statement? • Labeling practice – can you add the correct labels? • Explain, outline, annotate, describe practice. Take the diagram or
image and use it to help in your treatment of objective 2 and 3 assessment statements.
This is a work in progress – but you might find it useful. It will be updated later.
The diagrams in the presentation are all creative commons (unless otherwise noted), which means you can share, edit and print them, as long as you cite the source as http://sciencevideos.wordpress.com.
Remember:It’s an exercise in
clarity, not a colouring-in
competition!
Assessment statements have been taken from the online IB Biology subject guide:http://xmltwo.ibo.org/publications/migrated/production-app2.ibo.org/publication/7/part/2/chapter/2.html
Drawing in IB Biology Exams
http://sciencevideos.wordpress.com Draw the Core 3
7. (a) Draw a labeled diagram showing the ultrastructure of a typical prokaryote. [4]
• You can use pencil and a ruler.• You must not use coloured pencils.
As of 2011, exams will be scanned and look like this:
This bit gets cut off
The scanning machine only looks inside the boxes, so stay inside! Use extra paper if needed, but include a note to that effect in this box. Make sure the extra paper is labeled clearly.
• Draw clearly! Not too light or messy.• Practice first on the scrap paper.
A Terrible Drawing…
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A Terrible Drawing…
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Too lightUnlabeled
Messy
Tiny
A Rubbish Drawing…
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A Rubbish Drawing…
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Where are these labels pointing?The arrow heads are unnecessary
Unclear labels
Outside the scanning box
Messy shading
Criss-crossed label linesWiggly label lines
A Good Drawing…
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A Good Drawing…
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• Good use of space• Clear strong lines• Label lines are straight• Labels clearly written• Scale bar if appropriate
• Lines touch the labeled structure
• No unnecessary shading or colouring
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2.2.1 Draw and label a diagram of the ultrastructure of Escherichia coli (E. coli) as an example of a prokaryote.
All assessment statements taken from the online IB Biology subject guide:http://xmltwo.ibo.org/publications/migrated/production-app2.ibo.org/publication/7/part/2/chapter/2.html
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2.2.1 Draw and label a diagram of the ultrastructure of Escherichia coli (E. coli) as an example of a prokaryote.
1µm
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2.2.1 Draw and label a diagram of the ultrastructure of Escherichia coli (E. coli) as an example of a prokaryote.
1µm
cell wall
plasma membrane
flagellum
pili70S ribosomes
cytoplasm
nucleoid
Plasmids/ Loops of DNA
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2.2.1 Draw and label a diagram of the ultrastructure of Escherichia coli (E. coli) as an example of a prokaryote. 2.2.2 Annotate the diagram from 2.3.1 with the functions of each named structure.
1µm
cell wallProtects cell, holds structure
plasma membraneControls what goes in and out of the cell
FlagellumMovement
PiliAttachment, Exchange of DNA
70S ribosomesProtein synthesis
CytoplasmContains solutes, enzymes for metabolic reactions
NucleoidContains:Plasmids/ Loops of DNAGenetic information
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2.3.1 Draw and label a diagram of the ultrastructure of a liver cell as an example of an animal cell.
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2.3.1 Draw and label a diagram of the ultrastructure of a liver cell as an example of an animal cell.
10µm
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2.3.1 Draw and label a diagram of the ultrastructure of a liver cell as an example of an animal cell.
10µm
Plasma membrane
Mitochondria
Free 80S ribosomes
Lysosomes
Cytoplasm
Golgi apparatus Rough Endoplasmic Reticulum
Nucleus
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2.3.1 Draw and label a diagram of the ultrastructure of a liver cell as an example of an animal cell. 2.3.2 Annotate the diagram from 2.3.1 with the functions of each named structure.
10µm
Plasma membrane Controls what enters and leaves the cell
MitochondriaCell respiration
Free 80S ribosomesProtein synthesis for use within the cell
LysosomesContain enzymes for intracellular digestion
CytoplasmSolutes and enzymes for metabolic pathways
Golgi apparatusModifies and packages proteins for export
from the cell. Produces vesicles for exocytosis
Rough Endoplasmic ReticulumAttached 80S ribosomes produce proteins for export from the cell
NucleusContains DNA in the form of chromosomes
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2.5.4 Describe the events that occur in the four phases of mitosis (prophase, metaphase, anaphase and telophase). Try drawing this with a cell of n=2.
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2.5.4 Describe the events that occur in the four phases of mitosis (prophase, metaphase, anaphase and telophase). Try drawing this with a cell of n=2.
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2.4.1 Draw and label a diagram to show the structure of membranes.
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3.1.4 Draw and label a diagram showing the structure of water molecules to show their polarity and hydrogen bond formation.
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3.1.4 Draw and label a diagram showing the structure of water molecules to show their polarity and hydrogen bond formation.
Large oxygen atom pulls shared electrons closer to it, becoming slightly negative.
Therefore hydrogen atoms become slightly positive.
Covalent bond: shared electrons
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3.1.4 Draw and label a diagram showing the structure of water molecules to show their polarity and hydrogen bond formation.
Large oxygen atom pulls shared electrons closer to it, becoming slightly negative.
Therefore hydrogen atoms become slightly positive.
Covalent bond: shared electrons
Hydrogen bonds form between the slightly positive hydrogens of one water molecule and the
slightly negative oxygens of the next.
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3.2.2 Identify amino acids, glucose, ribose and fatty acids from diagrams showing their structure.
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Diagrams taken from the online IB Biology subject guide:http://xmltwo.ibo.org/publications/migrated/production-app2.ibo.org/publication/7/part/2/chapter/4/page/3.html
3.3.1 Outline DNA nucleotide structure in terms of sugar (deoxyribose), baseand phosphate.
Phosphate ion
Deoxyribose sugar
Nitrogenous base:• Adenine• Thymine• Guanine• Cytosine
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3.3.3 Outline how DNA nucleotides are linked together by covalent bondsinto a single strand.
Diagrams taken from the online IB Biology subject guide:http://xmltwo.ibo.org/publications/migrated/production-app2.ibo.org/publication/7/part/2/chapter/4/page/3.html
Phosphate ion
Deoxyribose sugar
Nitrogenous base:• Adenine• Thymine• Guanine• Cytosine
1
23
4
5
Covalent bond between C3 of one molecule and the phosphate of the next
Covalent bond between C3 of one molecule and the phosphate of the next. New nucleotides are added to the C3 each time.
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3.3.5 Draw and label a simple diagram of the molecular structure of DNA.
Diagrams taken from the online IB Biology subject guide:http://xmltwo.ibo.org/publications/migrated/production-app2.ibo.org/publication/7/part/2/chapter/4/page/3.html
Deoxyribose sugar
1
23
4
5
Covalent bond
Phosphate ion
Antiparallel strands
adenine thymine
guanine cytosine
Hydrogen bonds between complementary base pairs
(A&T; G&C)
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3.8.4 Outline the differences in absorption of red, blue and green light by chlorophyll.
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3.8.4 Outline the differences in absorption of red, blue and green light by chlorophyll.
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3.8.8 Outline the effects of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis. The shape of the graphs is required.
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3.8.8 Outline the effects of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis. The shape of the graphs is required.
TemperatureAt low temperature:Increase in temperature increases rate of reaction. At high temperature:Increase in temp. leads to sharp decline in rate as enzymes are denatured.
Rate
of r
eacti
on
Rate
of r
eacti
on
Rate
of r
eacti
on
Light intensityAt low light intensity:Increase in light intensity increases rate of reaction. At high light intensity:Increase in light intensity has no effect on rate of reaction – plateau.
CO2 concentrationAt low [CO2] :Increase in [CO2] increases rate of reaction. At high [CO2] :Increase in [CO2] has no effect on rate of reaction – plateau as all active sites are filled.
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4.2.3Outline the process of meiosis, including pairing of homologous chromosomes and crossing over, followed by two divisions, which results in four haploid cells. Try drawing this with a cell of n=2.
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4.2.3Outline the process of meiosis, including pairing of homologous chromosomes and crossing over, followed by two divisions, which results in four haploid cells. Try drawing this with a cell of n=2.
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5.1.4 Describe what is meant by a food chain, giving three examples, each with at least three linkages (four organisms).
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5.1.4 Describe what is meant by a food chain, giving three examples, each with at least three linkages (four organisms).
Food chains show the flow of energy through the trophic levels of a feeding relationship. PRODUCER PRIMARY CONSUMER SECONDARY CONSUMER TERTIARY CONSUMER
“eaten by”
Yellow iris moth caterpillar great tit sparrowhawk
Phytoplankton krill cod seal
diatoms freshwater shrimp bream osprey
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5.1.8 Construct a food web containing up to 10 organisms, using appropriate information.
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5.1.8 Construct a food web containing up to 10 organisms, using appropriate information.
Arrows show flow of energy. Some species can be classified in two or more trophic levels, e.g. marine omnivores
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5.2.1 Draw and label a diagram of the carbon cycle to show the processes involved.
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5.2.1 Draw and label a diagram of the carbon cycle to show the processes involved.
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5.3.1 Outline how population size is affected by natality, immigration, mortality and emigration.
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5.3.1 Outline how population size is affected by natality, immigration, mortality and emigration.
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5.3.3 Draw and label a graph showing a sigmoid (S-shaped) population growth curve.
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5.3.3 Draw and label a graph showing a sigmoid (S-shaped) population growth curve.
time
popu
latio
n
K
Transition phase
Exponential phase
Plateau phase
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5.3.3 Draw and label a graph showing a sigmoid (S-shaped) population growth curve.5.3.4 Explain the exponential, transition and plateau phases.
time
popu
latio
n
K
Transition phaseI + N > E + M (but less so)
Increased competition as space and resources are used up. Rate
of population growth slows.
Exponential phase
I + N > E + M Abundant space and resources. Very little competition so reproduction is high.
Plateau phaseI + N = E + M High competition as space and resources are limited. High effect of natural selection.
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6.1.4 Draw and label a diagram of the digestive system.
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6.1.4 Draw and label a diagram of the digestive system.
mouth
esophagus
stomach
small intestine
large intestine
rectum
liver
gall bladder
pancreas
anus
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6.1.7 Explain how the structure of the villus is related to its role in absorption and transport of the products of digestion.
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6.1.7 Explain how the structure of the villus is related to its role in absorption and transport of the products of digestion.
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6.1.7 Explain how the structure of the villus is related to its role in absorption and transport of the products of digestion.
Single-cell epitheliumShort diffusion path for digested
moleculesLacteals
Absorption and transport of lipid molecules
Rich network of capillariesTransport of molecules. Maintains
high concentration gradient between lumen of gut and blood.
MitochondriaActive transport of
digested food molecules
MicrovilliFurther increase in SA:Vol ratio
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6.2.1 Draw and label a diagram of the heart showing the four chambers, associated blood vessels, valves and the route of blood through the heart.
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6.2.1 Draw and label a diagram of the heart showing the four chambers, associated blood vessels, valves and the route of blood through the heart.
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6.2.5 Explain the relationship between the structure and function of arteries, capillaries and veins.
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6.2.5 Explain the relationship between the structure and function of arteries, capillaries and veins.
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6.3.4 Outline how phagocytic leucocytes ingest pathogens in the blood and in body tissues.
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6.3.4 Outline how phagocytic leucocytes ingest pathogens in the blood and in body tissues.
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6.4.3 Describe the features of alveoli that adapt them to gas exchange.
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6.4.3 Describe the features of alveoli that adapt them to gas exchange.
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6.4.4 Draw and label a diagram of the ventilation system, including trachea, lungs, bronchi, bronchioles and alveoli.
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6.4.4 Draw and label a diagram of the ventilation system, including trachea, lungs, bronchi, bronchioles and alveoli.
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6.5.2 Draw and label a diagram of the structure of a motor neuron.
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6.5.2 Draw and label a diagram of the structure of a motor neuron.
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6.5.2 Draw and label a diagram of the structure of a motor neuron.
Dendritic end terminal end
dendrites
axon
axon hillock
cell body
nucleusmyelin sheath
Nodes of Ranviermotor end plates
muscle tissue
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6.6.1 Draw and label diagrams of the adult male reproductive system.
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6.6.1 Draw and label diagrams of the adult male reproductive system.
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6.6.1 Draw and label diagrams of the adult male reproductive system.
sperm duct
bladder
semen gland
prostate gland
urethra
epididymispenis
testis
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6.6.1 Draw and label diagrams of the adult female reproductive system.
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6.6.1 Draw and label diagrams of the adult female reproductive system.
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6.6.1 Draw and label diagrams of the adult female reproductive system.
vagina
cervixmuscle wallendometrium
uterusovary
Oviduct/ Fallopian tube
bladder
urethra
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6.6.3 Annotate a graph showing hormone levels in the menstrual cycle, illustrating the relationship between changes in hormone levels and ovulation, menstruation and thickening of the endometrium.
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6.6.3 Annotate a graph showing hormone levels in the menstrual cycle, illustrating the relationship between changes in hormone levels and ovulation, menstruation and thickening of the endometrium.
Day 0 5 14 28
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6.6.3 Annotate a graph showing hormone levels in the menstrual cycle, illustrating the relationship between changes in hormone levels and ovulation, menstruation and thickening of the endometrium.
Day 0 5 14 28
Day 0-5 Endometrium is broken down (menstruation) as progesterone falls.Day 5-14 Estrogen rises, endometrium builds.
Day 14-28 Endometrium maintained by high progesterone levels to prepare for fertilisation.
endometrium
Day 0-14 FSH and LH stimulate development of the oocyte (egg) in the ovary.
Day 14 peak of LH causes ovulation.
Day 15-28 FSH and LH inhibited by estrogen and progesterone, preventing further release of eggs.
Day 0-14 estrogen increases, building the endometrium.
Day 14-18 estrogen drops, progesterone peaks, maintaining endometrium and inhibiting FSH and LH.
Day 28 Progesterone drops if the egg is not fertilised and does not implant onto endometrium.
Luteinising hormone (LH)
Follicle stimulating hormone (FSH)
estrogenprogesterone
For more IB Biology resources:http://sciencevideos.wordpress.com
Draw the Core 72This is a Creative Commons presentation. It may be linked and embedded but not sold or re-hosted.
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