Forwarded from sugarhse☀️ (zx☁️|bban🥹)
yummy bio notes😋
these are the additional resources linked to the assessment book that i bought!!😍😍 i think it rly gives a nice consolidation of the topics and what we nd to know, as well as some pract notes 📝 feel free to share arnd as well😘
#bio
these are the additional resources linked to the assessment book that i bought!!😍😍 i think it rly gives a nice consolidation of the topics and what we nd to know, as well as some pract notes 📝 feel free to share arnd as well😘
#bio
yea i have no jokes. the only thing i have now is that i’m wearing genes
^^ molecular bio/ genes notes
#bio
^^ molecular bio/ genes notes
#bio
i also have some bio practical notes here,, mainly focuses on combined bio, but i do believe there are some pure bio content inside too!!
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procrastination is history
HERES MY BIO PRAC NOTES HAR HAR
#bio #pihnotes
#bio #pihnotes
Combined Biology common topics:
Osmosis (required waiting time)
- plant tissue commonly used are potato & onion rings
- describe:
1. condition of cells
2. texture of cells
3. solution in which plants are immersed
1. condition of cells
turgid/ hard
- immersed in distilled water/ solution of higher concentration than potato cell sap
flaccid/ soft
- immersed in concentrated salt/ sugar solution OR solution of lower water concentration than potato cell sap
2. texture of cells
rough
- immersed in distilled water/ solution of higher water concentration than potato cell sap
smooth
- immersed in concentrated salt/ sugar solution OR solution of lower water concentration than potato cell sap
3. solution in which plant tissues are immersed
- distilled water
- dilute salt/ sugar solution
- concentrated salt/ sugar solution
recordings of change in length of plant tissue
- record in the units (mm or cm) indicated in question
- record ti the required number of decimal places indicated in question
- indicate whether it is a positive of negative change in length
#bio #pihnotes
Osmosis (required waiting time)
- plant tissue commonly used are potato & onion rings
- describe:
1. condition of cells
2. texture of cells
3. solution in which plants are immersed
1. condition of cells
turgid/ hard
- immersed in distilled water/ solution of higher concentration than potato cell sap
flaccid/ soft
- immersed in concentrated salt/ sugar solution OR solution of lower water concentration than potato cell sap
2. texture of cells
rough
- immersed in distilled water/ solution of higher water concentration than potato cell sap
smooth
- immersed in concentrated salt/ sugar solution OR solution of lower water concentration than potato cell sap
3. solution in which plant tissues are immersed
- distilled water
- dilute salt/ sugar solution
- concentrated salt/ sugar solution
recordings of change in length of plant tissue
- record in the units (mm or cm) indicated in question
- record ti the required number of decimal places indicated in question
- indicate whether it is a positive of negative change in length
#bio #pihnotes
Food Tests
- if you’re testing for reducing sugar, set up water-bath first (usually water is pre-heated for you, just bring to a boil)
If sample to get tested is in solid form (benedict’s test and biuret test);
crush/ cut sample given
- break up cells & release nutrients stored in cells
- increase surface area of food materials to react with reagents
add distilled water, equal volume to food sample
- to dissolve our nutrients from cells
- to make a concentrated solution of nutrients stored in cells
*MAKE SURE YOU MEMORISE THE FOOD TESTS, METHODS AND STEPS AH*
#pihnotes #bio
- if you’re testing for reducing sugar, set up water-bath first (usually water is pre-heated for you, just bring to a boil)
If sample to get tested is in solid form (benedict’s test and biuret test);
crush/ cut sample given
- break up cells & release nutrients stored in cells
- increase surface area of food materials to react with reagents
add distilled water, equal volume to food sample
- to dissolve our nutrients from cells
- to make a concentrated solution of nutrients stored in cells
*MAKE SURE YOU MEMORISE THE FOOD TESTS, METHODS AND STEPS AH*
#pihnotes #bio
common topics tested:
- osmosis
- food tests
- enzymes
- photosynthesis
- respiration
- transport in plants
- reproduction in plants
other topics pt 2:
- eye
- inheritance
- digestion in man
- hormones
unlikely topics tested (but still might come out):
- ecology
- nervous system
- transport in man
- microorganisms/ biotechnology
- reproduction in man
#bio #pihnotes
- osmosis
- food tests
- enzymes
- photosynthesis
- respiration
- transport in plants
- reproduction in plants
other topics pt 2:
- eye
- inheritance
- digestion in man
- hormones
unlikely topics tested (but still might come out):
- ecology
- nervous system
- transport in man
- microorganisms/ biotechnology
- reproduction in man
#bio #pihnotes