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B2  REVISION – CHAPTER B2  REVISION – CHAPTER

B2 REVISION – CHAPTER - PowerPoint Presentation

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B2 REVISION – CHAPTER - PPT Presentation

1 CELLS TISSUES amp ORGANS KEY WORDS Nucleus Cytoplasm Cell membrane Mitochondria Ribosome Chloroplast Vacuole Specialised Diffusion Concentration gradient Multicellular Tissue ID: 581284

key words assessment describe words key describe assessment chapter cells revision respiration organisms exercise enzymes explain effect student amp

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Slide1

B2

REVISION – CHAPTER 1 – CELLS, TISSUES & ORGANS

KEY WORDS:NucleusCytoplasmCell membraneMitochondriaRibosomeChloroplastVacuoleSpecialisedDiffusionConcentration gradientMulticellularTissueOrganOrgan system

ASSESSMENT:

What do plant cells have that animal cells do not?

What is the function of:

Nucleus –

Mitochondria

RibosomesChloroplastsCell Wall

Sketch and label a plant and an animal cell;

Draw and label 2 specialised cells. Explain their structure is adapted to suit their function

Use pictures and words to describe the three ways substances can move in and out of cellsDiffusion

What is a tissue?

What is an organ?

What is an organ system?Slide2

B2

REVISION – CHAPTER 2 – ORGANISMS IN THE ENVIRONMENT

KEY WORDS:PhotosynthesisGlucoseLimiting factorsQuadratSample sizeRangeMeanMedianModeTransectReproducibleValidVariables

ASSESSMENT:

What is the equation for photosynthesis

Where in the plant does it occur?

How are leaves adapted to perform photosynthesis?

Explain how light, CO

2

and temperature are limiting factors of photosynthesis

Explain how plants use glucose for the following:

Respiration

Transport

Storage

How do we measure the distribution of organisms?

How do we know this data is accurate?

How doe the follow factors affect organisms in their environment?

Temperature:

Light:

Water:

CO

2

and O

2

:Slide3

B2

REVISION – CHAPTER 3 – ENZYMES

KEY WORDS:CatalystsEnzymeActive siteDenaturedDigestedCarbohydraseAmylaseProteaseLipaseBileEmulsifiersBiological detergents

ASSESSMENT:

What are enzymes made from?

What do enzymes do?

How do they work? (explain & draw the lock & key mechanism

What effect does temperature have on enzyme activity

What effect does pH have on enzyme activity

What are the 3 groups of enzymes in digestion? What is their substrate and what do they break them down into?

1)

2)3)Why is the stomach acidic?

What is bile, what does it do and how does it do it?

Describe 3 industrial uses for enzymes

How can we speed up digestion?

Changing the pH:

Altering the surface area:Slide4

B2

REVISION – CHAPTER 4 – ENERGY FROM RESPIRATION

KEY WORDS:Aerobic respirationMitochondriaGlycogenAnaerobic respirationOxygen debt

ASSESSMENT:

What is the formula for aerobic respiration?

What is the role of mitochondria in respiration?

Why do organisms respire?

A student pedalled an exercise cycle at constant speed for 5 minutes. The student’s heart rate was recorded at one-minute intervals during the exercise and also during recovery

.

Describe the effect exercise has on the heart:

A student‘s breathing was monitored before and after vigorous exercise. The student breathed in and out through a special apparatus. The graphs show the changes in the volume of air inside the apparatus. Each time the student breathed in, the line on the graph dropped. Each time the

student

breathed out, the line went up

.

Describe the effect of exercise has on breathing:

What is anaerobic respiration?

How does it cause muscle fatigue?

What is oxygen debt?Slide5

B2

REVISION – CHAPTER 5 – SIMPLE INHERITANCE

KEY WORDS:AllelesMitosisMeiosisStem cellsTherapeutic cloningMendelDNA finger printingChromosomesDominantRecessivePolydactylyCystic fibrosis

ASSESSMENT:

What are stem cells?

State 2 uses of stem cells:

State 2 problems with stem cell research:

Chromosomes are made of long strands of what?

Small sections of this are called what?

What do genes code for?

What is DNA fingerprinting?

What is mitosis and why is it needed?

What is differentiation?

How does it differ in plants and animals?

What is meiosis?

Why is it important?

How does it help generate variation?

How many chromosomes

in

a) gamete and b) somatic cell?

What is an allele?

What does a) dominant; and b) recessive mean?

What

is Cystic Fibrosis and what causes it?

Draw the punnet's square for 2 CF carriersSlide6

How do these fossils support the theory of evolution

B2

REVISION – CHAPTER 6 – OLD & NEW SPECIES

KEY WORDS

:FossilsExtinctionGeographical isolationEndemicSpeciation

ASSESSMENT:

What are fossils?

How are they formed?

What can we learn from fossils?

Why do we describe fossil records as incomplete?

What is extinction?

Describe how……environmental change leads to extinction

…organisms can cause extinction

Describe how new species can evolve through geographical isolation:

Higher: include info on speciation

What caused the extinction of the dinosaurs?