Biology Learning Videos - Dr. BbosaEXPLORE ALL

DNA, RNA and protein synthesis

Bbosa Science- 02/19/2021 5

Nucleotides, bases, evidences that DNA is the genetic material, comparison between the structure of DNA and RNA; replication, transcription, and translation Read More

Asexual reproduction and alternative generation

Bbosa Science- 02/19/2021 2

Advantages and disadvantages of asexual reproduction, alteration of generations in bryophytes and ferns; comparison of life cycle of moss and ferns Read More

Meiosis and mitosis revision questions

Bbosa Science- 02/19/2021 1

Questions set to test and aid understanding of cell division at a-level Read More

A-level biology videosEXPLORE ALL

DNA, RNA and protein synthesis

Bbosa Science- 02/19/2021 5

Nucleotides, bases, evidences that DNA is the genetic material, comparison between the structure of DNA and RNA; replication, transcription, and translation Read More

Asexual reproduction and alternative generation

Bbosa Science- 02/19/2021 2

Advantages and disadvantages of asexual reproduction, alteration of generations in bryophytes and ferns; comparison of life cycle of moss and ferns Read More

Meiosis and mitosis revision questions

Bbosa Science- 02/19/2021 1

Questions set to test and aid understanding of cell division at a-level Read More

Cell divisions (meiosis and mitosis)

Bbosa Science- 02/19/2021 0

Stages of meiosis and mitosis and comparison between mitosis and meiosis Read More

Ecology Essay questions

Bbosa Science- 02/19/2021 1

Questions selected to test and enable understanding of ecology Read More

Ecology structured questions

Bbosa Science- 02/19/2021 5

Questions selected to test and enable understanding of the topic of ecology Read More

O level chemistry videosEXPLORE ALL

Genotype
Bbosa Science- 06/05/2021 2

Genotype This is the genetical constitution of an organism i.e. the particular set alleles, leading to observable characteristics Please Subscribe to promote this website. Subscription ... Read More

Preparation of hydrogen
Bbosa Science- 07/11/2020 7

procedure of preparation of hydrogen and worked examples Read More

Preparation of oxygen with worked examples (O-level chemistry)
Bbosa Science- 07/08/2020 3

https://youtu.be/mBPSCDU8jws principles of preparation of gases i.e. preparatory state, purification stage, drying stage, and collection stage. Preparation oxygen, sample questions and answers Read More

Preparation of gases, hydrogen (o-level chemistry)
Bbosa Science- 06/24/2020 2

https://youtu.be/uewj-Arxnys Stages of gas preparation, preparation of oxygen, testing for oxygen Read More

Bio Questions and AnswersEXPLORE ALL

Bio Questions and answers

Explain why measles vaccine administered at the age of 9 month

Bbosa Science- 09/02/2023 1

It was estimated that weaning on average occurs at this age, and the baby no longer gets antibodies against measles from the mothers. Read More

Explain why measles vaccine administered at the age of 9 month
Bio Questions and answers

Explain the effects of the heterozygote advantage in a population with increasing gene

Bbosa Science- 11/09/2022 7

Increasing gene flow reduces the probability of recessive alleles   or disadvantageous alleles in the population as it introduces new alleles. This reduced the selection pressure ... Read More

Explain the effects of the heterozygote advantage in a population with increasing gene
State four physiological differences between C3 and C4 plants.

State four physiological differences between C3 and C4 plants.

Bio Questions and answersBbosa Science- 10/28/2022 0

Difference between C3, and C4 plant C3 pathway C4 pathway 1 Photosynthesis occurs in mesophyll cells Photosynthesis occurs in mesophyll cells and bundle sheath cells ... Read More

Explain how light influences stomatal opening in a plant that has been previously in the dark.

Explain how light influences stomatal opening in a plant that has been previously in the dark.

Bio Questions and answersBbosa Science- 10/28/2022 0

When exposed to light, starch of the guard cells is converted into malic acid, Malic acid dissociate into malate and H+ ions in the guard ... Read More

Does milk contain iron?

Does milk contain iron?

Bio Questions and answersBbosa Science- 10/28/2022 0

Dairy products such as cheese, cottage cheese, milk and yogurt, although rich in calcium, have negligible iron content Read More

What part is played by the mammalian skin in excretion?

What part is played by the mammalian skin in excretion?

Bio Questions and answersBbosa Science- 10/27/2022 0

Sweating eliminates urea, a by-product of protein catabolism, excess water and salts Read More

What is the role of stored proteins during seed germination

What is the role of stored proteins during seed germination

Bio Questions and answersBbosa Science- 10/27/2022 0

Provide a source of amino acids and reduced N necessary for synthesis  of enzymes, and for formation of structures in developing embryo. some may be ... Read More

Methods to reduce soils erosion are

Methods to reduce soils erosion are

Bio Questions and answersBbosa Science- 10/25/2022 1

Afforestation Planting grass cover Mulching Strip cropping Terracing Contour cropping Read More

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