CORRECTION: 1:02 - I should have said 'tropic growth' instead of 'nastic growth' here. Nastic growths also occur due to stimuli and are reversible movements but are not influenced by direction. Example would be the folding of leaves of sensitive plants after being touched (stimulus) -- the direction of growth doesn't change. Tropic growths are like phototropism and gravitropism. Saprophytic nutrition - Occurs when saprophytes (decomposers such as fungi and bacteria) use dead or shed organic matter (carcasses, faeces, shed foliage) as a nutrient substrate. They break down and convert the organic matter into inorganic compounds such as carbon dioxide, which can then be released into the atmosphere. It also prevents dead matter from accumulating and occupying excessive space.
Hey y'all, just remember for your exam: FSH and LH are PITUITARY hormones (secreted by the pituitary gland in the brain, of course). Oestrogen and progesterone are GONADAL hormones (secreted by the ovary and corpus luteum respectively). Testosterone is also a gonadal hormone, secreted by the testes. Okay take care now!
Bio CSEC June 2022 Paper 2 Q1: Line graph with Stem height/Root depth vs Time, or Dry mass vs Time. Link to animal vs plant growth, phototropism or growth movements, reversible/irreversible. Role of endosperm. Storage of glycogen and starch, locations. Q2: Germination, linking to cotyledon and endosperm function, linking to autotrophic nutrition, to photosynthesis, to leaf adaptation (ref. upper and lower epidermis, spongy mesophyll, vascular bundle). Fate of glucose and oxygen. Description of starch test experiment on variegated leaves. Q3: Cells question (draw, annotate cell / fill out table), example of specialized cell, effects of osmosis on plant vs animal cells (in both diluted and concentrated solutions). Plasmolysis, bursting of animal cells etc. Q4: Long question on carbon cycle and ways to mitigate its effects on climate change. Sketch, label carbon cycle. Effects of deforestation, combustion, reafforestation, alternative energy sources overall human impact). Autotrophic vs saprophytic nutrition. Role of decomposers. Q5: Define gene, allele, recessive. Sickle cell anaemia description + Punnett square. How two parents who don't have sickle cell produce a child who has (heterozygous, 3:1 gen ratio) Explain how sickled rbc's are not as functional as non-sickled. How sickle cell trait provides malaria immunity. Q6: Menstrual cycle descriptions of phases (follicular, luteal, menses). Role and fate of corpus luteum to secrete progesterone and maintain endometrium lining. Male vs female contraceptives, barrier vs hormonal vs surgical methods of contraception with relation to efficiency, advantages and disadvantages and ability to prevent STI's. That's your Paper 2. Sperwin knows all. You're welcome.
I watched this video literally over 6 times...and it really helped in that bio exam ... I smiled throughout the entire exam... thanks so muchhhhhhhh!!!!😌
Sperwin, you are a life saver. I didn't understand some of these topics when my bio teacher taught it and now I do because of you!!! Now I am a lot more confident that'll I'll get a grade 1 in Bio. THANKS A LOT!!!!
While 'true' crenation only really happens with red blood cells (shrinking into a small spiky ball), the term can be used for shrinkage of any cell of animal origin. But you can just as comfortably say 'shrink' if you wish.
Sir...I LOVE yuh. But I have a question. 52:14 if ovulation is what releases the Graafian follicle and thus the egg in the first place for fertilization How does delaying ovulation help with an already fertilized egg? Cuz wouldn't ovulation need to take place before the egg was released?
Basically.. a man's sperm can 'live' in a woman's uterus for up to 2-3 days. By delaying ovulation, the sperm will die before the egg is released. But it's good that you pointed this out. It's better just to say 'delay fertilization' or 'reduce chances of fertilization and implantation' rather.
Let's say the woman has sex with a man on Monday. Them spermatozoa could remain there till quite Thursday even. If the woman egg schedule to come out she house by Tuesday, is real bacchanal. So Plan B and other emergency contraceptives would delay the ting to quite Friday maybe.
Still didn't really do anything on the exam but that's because I didn't study, but without your vid I wouldn't have done anything at all. Also osmosis wasn't on the paper and some other stuff too.
People with two sickle cell alleles (homozygous recessive) have abnormal haemoglobin. As a result, many of their red blood cells don't have the usual rounded, biconcave shape. They instead have a crescent sickled shape. Because of this, the cells' oxygen-carrying capacity is diminished, leading to muscle tissue being deprived of oxygen for respiration. This results in fatigue and fainting. The sickle cells are less flexible and tend to accumulate in some capillaries, leading to swelling and pain. People with only one sickle cell allele (heterozygous) are said to have sickle cell trait. They rarely ever suffer from sickle cell anaemia symptoms. Due to slight changes in their haemoglobin and red blood cells (they become slightly more porous), however, this provides a hostile environment for the malarian parasite (Plasmodium falciparum). People with sickle cell trait thus gain some immunity against malaria, making them more likely to survive infection (especially in malaria-prone countries) and passing on their genes to their offspring.
Thank you, this video help me a lot during the exam I could've answer all the question because of this video I appreciate you for coming out here and making this video for us🔥🔥❤️
But I feel sorry for you so here, just do some past papers. The solutions right here: drive.google.com/drive/u/0/folders/17J0NMGNYhc3STGjvBD3J9lGz3HDLNhmR
CSEC Bio P2 2022 solutions drive.google.com/file/d/16ugVW5Kgyhe5xYelMFBRxe6UJAOcp-zo/view?usp=sharing Watch it, doh watch it, who cares? Take care, all stars
@@TahcoShell Learning and education should always be fun and rewarding. Is exams does make it not fun. And in turn, schools does cater to exams. So in the end, you learning to just get a piece of paper I guess? Just learning de ting is de reward
Now that the exam has come and gone, I want to say another big THANK YOU for this video. It helped SO MUCH, even the sickle cell anaemia punnet square, I wrote the same thing you had in the video lol. THANK YOU!!! #sperwinknowsbest
Not likely but still learn it in context of how deoxygenated blood becomes re-oxygenated and then pumped to the capillary networks surrounding body cells. What'll more likely come are the various blood components, adaptation of rbc's to their function and effect of sickle cell anaemia on those adaptations and functions. But who's me lol I's not CXC
@@lorrylam4842 People with two sickle cell alleles (homozygous recessive) have abnormal haemoglobin. As a result, many of their red blood cells don't have the usual rounded, biconcave shape. They instead have a crescent sickled shape. Because of this, the cells' oxygen-carrying capacity is diminished, leading to muscle tissue being deprived of oxygen for respiration. This results in fatigue and fainting. The sickle cells are less flexible and tend to accumulate in some capillaries, leading to swelling and pain. People with only one sickle cell allele (heterozygous) are said to have sickle cell trait. They rarely ever suffer from sickle cell anaemia symptoms. Due to slight changes in their haemoglobin and red blood cells, however, this provides a hostile environment for the malarian parasite (Plasmodium falciparum). People with sickle cell trait thus gain some immunity against malaria, making them more likely to survive infection (especially in malaria-prone countries) and passing on their genes to their offspring.
@@Strangelove20 sir what are coastal environments? if you have an idea by chance. To me, thats like rivers (waterfalls, deltas, meanders, oxbows etc) am i right?
@@Arcaeau them is like narrow zones where terrestrial ground meet marine habitats. like a transitional zone. them is like mangrove swamps, coves and bays. deltas too but not waterfalls, i think. those are found more inland at high altitudes. but where they pour into estuaries may be coastal.
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
I really appreciate persons like you for doing these videos, hoping for the bio grade 1.
thanks fam we manifesting that grade one right now!!!!! check out the phys video too
Thanks same to you😊
Wishing everyone who sees this comment a 1 or a 2 in biology ❤
I claim
Thanks❤
I claim the 1 or 2
🙌
claim🙏🙏♥
I was 3 pages away from a mental breakdown and 30 minutes away from giving up studying. You my friend has given me hope to pass this bullshit
Same tbh plus I didn't understand some of these topics when my bio teacher taught me
CORRECTION:
1:02 - I should have said 'tropic growth' instead of 'nastic growth' here. Nastic growths also occur due to stimuli and are reversible movements but are not influenced by direction. Example would be the folding of leaves of sensitive plants after being touched (stimulus) -- the direction of growth doesn't change. Tropic growths are like phototropism and gravitropism.
Saprophytic nutrition - Occurs when saprophytes (decomposers such as fungi and bacteria) use dead or shed organic matter (carcasses, faeces, shed foliage) as a nutrient substrate. They break down and convert the organic matter into inorganic compounds such as carbon dioxide, which can then be released into the atmosphere. It also prevents dead matter from accumulating and occupying excessive space.
This has been a big help thanks. Good luck in bio tomorrow everyone
watch the past paper runthrough and just collect the 1 one time. it's waiting for you
ruclips.net/video/bBbzx6J02XQ/видео.html
Same too you
Infact it is tmr
Hey y'all, just remember for your exam: FSH and LH are PITUITARY hormones (secreted by the pituitary gland in the brain, of course). Oestrogen and progesterone are GONADAL hormones (secreted by the ovary and corpus luteum respectively). Testosterone is also a gonadal hormone, secreted by the testes.
Okay take care now!
Ight Bet. Grade 1 is coming
@@TheLostSheep578
Manifesting at least a grade 2 man
Bio CSEC June 2022 Paper 2
Q1: Line graph with Stem height/Root depth vs Time, or Dry mass vs Time. Link to animal vs plant growth, phototropism or growth movements, reversible/irreversible. Role of endosperm. Storage of glycogen and starch, locations.
Q2: Germination, linking to cotyledon and endosperm function, linking to autotrophic nutrition, to photosynthesis, to leaf adaptation (ref. upper and lower epidermis, spongy mesophyll, vascular bundle). Fate of glucose and oxygen. Description of starch test experiment on variegated leaves.
Q3: Cells question (draw, annotate cell / fill out table), example of specialized cell, effects of osmosis on plant vs animal cells (in both diluted and concentrated solutions). Plasmolysis, bursting of animal cells etc.
Q4: Long question on carbon cycle and ways to mitigate its effects on climate change. Sketch, label carbon cycle. Effects of deforestation, combustion, reafforestation, alternative energy sources overall human impact). Autotrophic vs saprophytic nutrition. Role of decomposers.
Q5: Define gene, allele, recessive. Sickle cell anaemia description + Punnett square. How two parents who don't have sickle cell produce a child who has (heterozygous, 3:1 gen ratio) Explain how sickled rbc's are not as functional as non-sickled. How sickle cell trait provides malaria immunity.
Q6: Menstrual cycle descriptions of phases (follicular, luteal, menses). Role and fate of corpus luteum to secrete progesterone and maintain endometrium lining. Male vs female contraceptives, barrier vs hormonal vs surgical methods of contraception with relation to efficiency, advantages and disadvantages and ability to prevent STI's.
That's your Paper 2. Sperwin knows all. You're welcome.
Sir, do you have the pdf version of the paper by any chance or pictures? e.e
@@Lilly-vo2zi The pdf does come to me in my nightmares
@@luisramlal6468 Yes
you rel sweet inno 😩
Is this really how our exam will look on Monday?
Now this is a crash course. Thank you so much!
thanks fam make sure to share it to others doing the exam! make sure to check out the physics crash course as well
@@Strangelove20 dude your are op as in overpowered, you teached me better than my teachers and they have been teaching me for 2 years how you do dis😮
I watched this video literally over 6 times...and it really helped in that bio exam ... I smiled throughout the entire exam... thanks so muchhhhhhhh!!!!😌
Heyy so what grade did you get??
Also you think 3 months is enough to study for exams????
@@See6iz some would say too much-
Thank you sir, the grade 1 is now in reach 🙏🏾
it was always in reach bredda believe in yourself
@@Strangelove20 Sperwin knows all 😭
Wishing everyone all the best for the Bio Paper two tmr
Me cramming all 50 pages of this at 3 am, the day of the exam.
Ill be fiiiiiiiiiiine............😭😭😭😭😭😭😭😭😭😭😭😭😭😭
Thank you very much sir, I can now confidently say I'm going into the exam tomorrow and coming out smiling, hoping and praying for a grade 1.
Can't blv it took me three days to finish this video. Thank you sir, it means a lot
Sperwin, you are a life saver. I didn't understand some of these topics when my bio teacher taught it and now I do because of you!!! Now I am a lot more confident that'll I'll get a grade 1 in Bio. THANKS A LOT!!!!
sperwin packing what your teacher lacking. manifest destiny tomorrow fam WE REACH
@@Strangelove20 lol yes😂😂
Here thank God I found your channel #wish me luck tomorrow..manifesting 1 or 2
We going to ace this blasted exam!!!!!!!
Can you do a may june recap for 2023? Please
This is really good and refreshing content! Interesting to watch even though I did my Cxc's many moons ago!
Broad topics review on Saturday 3pm. Set your reminders!
ruclips.net/video/bBbzx6J02XQ/видео.html
This was extremely helpful. Everything on this video was on the exam. I really appreciate it. Continue the great work! I will share your chanel
sir is it possible to do a CSEC chemistry broad topics course also?
is it possible? yes. will it be useful? no.
don't love chem enough to spend so many hours behind it 😴
@@Strangelove20 sir you know any other teacher on RUclips who does do cape Chem?
Check this man but he does only do CSEC Chem. Ask he to do some CAPE
ruclips.net/channel/UCx7JQpAObUT2dyztFebyKkQvideos
Wo, check this out: drive.google.com/drive/u/0/folders/17J0NMGNYhc3STGjvBD3J9lGz3HDLNhmR
@@Strangelove20 u are the absolute best
damn. this video made understanding bio a whole lot easier. tysm!!!
watched this on 2x speed half hour before the exam, thank you spermwin 🙏
how did you do?
@@xenovo I got a II
CSEC Physics review here. Broad topics are timestamped:
ruclips.net/video/SHCE8q-34D0/видео.html
Free HSB crash course here:
ruclips.net/video/G5YgHR2zh7s/видео.html
big up sperwin boy. Now hopefully i retain this information for tmr because i confident I have all 1s so far 😭, can't have bio ruin that
Tysm for this! Are you planning to do one for chem and physics?
Chem nah. Physics, it already here fam ruclips.net/video/SHCE8q-34D0/видео.html
26:44 does crenation occur in all animal cells or just red blood cells?
While 'true' crenation only really happens with red blood cells (shrinking into a small spiky ball), the term can be used for shrinkage of any cell of animal origin. But you can just as comfortably say 'shrink' if you wish.
Sir...I LOVE yuh. But I have a question. 52:14
if ovulation is what releases the Graafian follicle and thus the egg in the first place for fertilization
How does delaying ovulation help with an already fertilized egg? Cuz wouldn't ovulation need to take place before the egg was released?
Basically.. a man's sperm can 'live' in a woman's uterus for up to 2-3 days. By delaying ovulation, the sperm will die before the egg is released.
But it's good that you pointed this out. It's better just to say 'delay fertilization' or 'reduce chances of fertilization and implantation' rather.
Let's say the woman has sex with a man on Monday. Them spermatozoa could remain there till quite Thursday even. If the woman egg schedule to come out she house by Tuesday, is real bacchanal. So Plan B and other emergency contraceptives would delay the ting to quite Friday maybe.
@@Strangelove20 Alright sir understood many many thanks
@@hablabaabamos5706 much love. really appreciate your input!
Thank you! Nothing more I can say just THANK YOU!
Still didn't really do anything on the exam but that's because I didn't study, but without your vid I wouldn't have done anything at all. Also osmosis wasn't on the paper and some other stuff too.
this vid made me do well today thanks you sir
why no meiosis and mitosis
Thank you sir for this excellent video.. I know that I will pass this subject in the name of the lord🙏🏼❤
sir can you do cape broad topics run through also please?
It's in the CAPE speedruns on my channel. The broad topics are timestamped there so you should gt easy
Thank you soo much this video was indeed helpful🙏❤💯
I'm so happy I find this video very informative 😌🙏
doing Gods work rn 🙏🙏
I don't know if you will see this sir but I appreciate you...❤❤🎉🎉🎉 thank you so much 🎉🎉
Good day sir, how does sickle cell trait provides malaria immunity?
People with two sickle cell alleles (homozygous recessive) have abnormal haemoglobin. As a result, many of their red blood cells don't have the usual rounded, biconcave shape. They instead have a crescent sickled shape.
Because of this, the cells' oxygen-carrying capacity is diminished, leading to muscle tissue being deprived of oxygen for respiration. This results in fatigue and fainting. The sickle cells are less flexible and tend to accumulate in some capillaries, leading to swelling and pain.
People with only one sickle cell allele (heterozygous) are said to have sickle cell trait. They rarely ever suffer from sickle cell anaemia symptoms. Due to slight changes in their haemoglobin and red blood cells (they become slightly more porous), however, this provides a hostile environment for the malarian parasite (Plasmodium falciparum). People with sickle cell trait thus gain some immunity against malaria, making them more likely to survive infection (especially in malaria-prone countries) and passing on their genes to their offspring.
Ok thank you.
Thank you, this video help me a lot during the exam I could've answer all the question because of this video I appreciate you for coming out here and making this video for us🔥🔥❤️
anyone else pay attention to how much times he voice crack 🤣
but excellent explanation of the information
how many cracks were there? did you count them? and more importantly, have you named each individual one?
@@Strangelove20 i would check but i have biology on monday 😂
Sir is it possible for you to do past paper questions on each broad topic?
I usually do these in the day before exam livestreams. But i will see how things going. It'll go up one way or another
@@Strangelove20 sir you can email it to me or send via w/a on a pdf
@@samanthasankar8941 ok what is pdf
Hi. Thank you so much. Your video is a big help to me. Is it possible you can do one for CSEC Chemistry?
It is possible yes. But will it happen? No... it won't happen...........
But I feel sorry for you so here, just do some past papers. The solutions right here: drive.google.com/drive/u/0/folders/17J0NMGNYhc3STGjvBD3J9lGz3HDLNhmR
Oh ok 😟. I understand. Thank you
CSEC Bio P2 2022 solutions drive.google.com/file/d/16ugVW5Kgyhe5xYelMFBRxe6UJAOcp-zo/view?usp=sharing
Watch it, doh watch it, who cares? Take care, all stars
thank you, Sir can you give us the Chem questions please
I did well today, thank you sir
A big thank you sir...😁
the vid save me sir..i for sure gonna get ah 1 in bio...tysm sir
Btw this has been very helpful...Thanks
real
Thanks 🙏🏾 This Help Me So So Much
#Appreciate It🙏🏾
thank you, Sir can you give us the Chem questions please
Thank you very much...for this....really helpful information 👌👌👌
bless. check out the past paper review coming saturday ruclips.net/video/bBbzx6J02XQ/видео.html
@@Strangelove20 what past paper have you decided on?
Late crammers where yall at 😭😭
I love this thank u for making this video to help us❤️
Good day....thanks for this video. I understand you do not do lessons. Can you point me in the direction for a Biology crash course for the 2025 exam?
Thank you so much this helped alot
😂my friend showed me this video on the day of the exam and I went in and beat him with a grade 2. 🙃
Can you also do an I.T crash course please? or do you just deal with the sciences?
i's not even a teacher fam lol my current job actually have nothing to do with science. i just do this for fun nowadays
@@Strangelove20 :O that's crazy, I wanna get on your level where I star learning and teaching things for fun 🤣
@@TahcoShell Learning and education should always be fun and rewarding. Is exams does make it not fun. And in turn, schools does cater to exams. So in the end, you learning to just get a piece of paper I guess? Just learning de ting is de reward
U forgot saprophytic nutrition?
Remember it for everybody right here in the comments nah fam
Sir can you do a csec biology paper 2 walk through questions of the topics that you think will come on the exam please ?
I do those on livestreams like the day before exams. Be there or be square
@@Strangelove20 looking out for the live today🥰
@@ciara.G no live today. I did a past paper video yesterday tho ruclips.net/video/bBbzx6J02XQ/видео.html
hi sir would you please do a past papers live on all the board topics, please
Might not be possible unfortunately but will do one for physics. Likely I will just post a bunch of past paper solutions
@@Strangelove20 ok thanks
thx a lot sir bio was food
this is extremely helpful :)
Thank you 😊
thanks for this sir
Thank you so soo much😀
Gracias por este video!!!
de nada
Now that the exam has come and gone, I want to say another big THANK YOU for this video. It helped SO MUCH, even the sickle cell anaemia punnet square, I wrote the same thing you had in the video lol. THANK YOU!!! #sperwinknowsbest
If I ever get grade 1 in bio it's your fault😭😭
ruclips.net/video/8mWW6kRITEY/видео.html
De first part have me dying dread lmao
could i have the power point please
i dont know how to use a computer
@@Strangelove20 come on now, don't be shy and send a link☺☺
thank you so much for this
Thank you.
love this video it rly helped thank you👍
your amazing
thanks but it's *you're. i regret not telling you this before english p2
Respect sir grade 1
Thanks very much
good day mr. kevin
bless
THANK YOU SOO MUCH
thank u mr spermin blessup
Excuse me sir do you think heart will be in the exam?
Not likely but still learn it in context of how deoxygenated blood becomes re-oxygenated and then pumped to the capillary networks surrounding body cells. What'll more likely come are the various blood components, adaptation of rbc's to their function and effect of sickle cell anaemia on those adaptations and functions.
But who's me lol I's not CXC
@@Strangelove20 oh alright, thank you very much
@@Strangelove20 excuse me, I was reading my book but can't find the effect of the sickle cell anemia, could you explain please?
@@lorrylam4842 People with two sickle cell alleles (homozygous recessive) have abnormal haemoglobin. As a result, many of their red blood cells don't have the usual rounded, biconcave shape. They instead have a crescent sickled shape.
Because of this, the cells' oxygen-carrying capacity is diminished, leading to muscle tissue being deprived of oxygen for respiration. This results in fatigue and fainting. The sickle cells are less flexible and tend to accumulate in some capillaries, leading to swelling and pain.
People with only one sickle cell allele (heterozygous) are said to have sickle cell trait. They rarely ever suffer from sickle cell anaemia symptoms. Due to slight changes in their haemoglobin and red blood cells, however, this provides a hostile environment for the malarian parasite (Plasmodium falciparum). People with sickle cell trait thus gain some immunity against malaria, making them more likely to survive infection (especially in malaria-prone countries) and passing on their genes to their offspring.
@@Strangelove20 thank you
sir, are you gonna do geography?
I was a geography master back in school but I can't remember anything nowadays except meanders and ox bow lakes lol
@@Strangelove20 sir what are coastal environments? if you have an idea by chance. To me, thats like rivers (waterfalls, deltas, meanders, oxbows etc) am i right?
@@Arcaeau them is like narrow zones where terrestrial ground meet marine habitats. like a transitional zone. them is like mangrove swamps, coves and bays. deltas too but not waterfalls, i think. those are found more inland at high altitudes. but where they pour into estuaries may be coastal.
@@Arcaeau they call these transitionary zones 'ecotones' btw, coastal environments belonging to that group
@@Strangelove20 thanks a million sir☺
Best sou sou scheme ever
1
Thanks sir
Thanks for this videos😀😁
my man, i include the ting bout them saprophytes in the comments. a good example of a saprophyte is the caribbean examination council
@@Strangelove20 LMFAOO
ily
anyone here in 2023
Me. Was wondering if sir could do a May/June revision or crash course for us who is doing exam this year. Would really appreciate it...
Me
Had Bio today and some of these were still helpful even a year later 🥹 Thanks so muchh