Biology Learning Videos - Dr. BbosaEXPLORE ALL

DNA, RNA and protein synthesis

Bbosa Science- 02/19/2021 4

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 1

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 4

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 1

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 0

Questions selected to test and enable understanding of ecology Read More

Ecology structured questions

Bbosa Science- 02/19/2021 2

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 3

procedure of preparation of hydrogen and worked examples Read More

Preparation of oxygen with worked examples
Bbosa Science- 07/08/2020 2

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
Bbosa Science- 06/24/2020 2

Stages of gas preparation, preparation of oxygen, testing for oxygen Read More

Bio Questions and AnswersEXPLORE ALL

Bio Questions and answers

Describe ecological effects of drainage of nitrate fertilizers into rivers and streams.

Bbosa Science- 03/06/2022 3

Accumulation of nitrates in the streams (eutrophication) encourages proliferation of protists and algae on the surface of water. When the algae die, bacterial decomposers use ... Read More

Describe ecological effects of drainage of nitrate fertilizers into rivers and streams.
Bio Questions and answers

Give three ways in which plants use the nitrates they have absorbed.

Bbosa Science- 03/06/2022 0

Synthesis of chlorophyll Synthesis of enzymes, and hormones Synthesis of nucleic acids They are determinant of osmotic pressure of the cell sap They are determinant ... Read More

Give three ways in which plants use the nitrates they have absorbed.
Bio Questions and answers

Describe how plants absorb nitrate from the soil.

Bbosa Science- 03/06/2022 0

Plants absorb nitrates through root hairs using passive and active mechanism. The nitrates cross the cortex of the root through the apoplast, symplast and vacuolar ... Read More

Describe how plants absorb nitrate from the soil.
Advantages and disadvantages of vegetative propagation

Advantages and disadvantages of vegetative propagation

Bio Questions and answersBbosa Science- 03/06/2022 0

Involve use of plant materials other than seeds such as cutting (sweet potatoes, cassava) suckers (pineapple, banana), stem tubers (iris)   Advantages Take short time ... Read More

Describe how new species of organism may arise

Describe how new species of organism may arise

Bio Questions and answersBbosa Science- 03/06/2022 3

The process by which new species arise in known as speciation. Speciation to occur their must genetic isolation of a pollution for enough time to ... Read More

Describe how new species of organism may arise

Describe how new species of organism may arise

Bio Questions and answersBbosa Science- 03/05/2022 0

The process by which new species arise in known as speciation. Speciation to occur their must genetic isolation of a pollution for enough time to ... Read More

Describe what would happen in an individual who develops a malfunctioning liver.

Describe what would happen in an individual who develops a malfunctioning liver.

Bio Questions and answersBbosa Science- 03/05/2022 0

  Solution The liver is the largest organ and center of metabolic activity in the body. Its failure to function properly it fails the following ... Read More

Describe how vascular cambium bring about growth in higher plants

Describe how vascular cambium bring about growth in higher plants

Bio Questions and answersBbosa Science- 03/05/2022 0

This is located between xylem and phloem and its activity causes secondary growth or increase in girth. The vascular cambium consists of two types of ... Read More