Category: General

Disadvantage of public borrowing

11/04/2022 0

Public borrowing leads to foreign exchange outflow and consequently balance of payment deficits in long run during debt servicing Loans are public burdens because it ... Read More

Describe two force that enable water to move up the xylem vessels in a continuous column.

10/28/2022 0

Water molecules are held together by cohesive force, loss of water from the leaves by transpiration exerts a tension or pull (transpiration pull) on the ... Read More

What is the main cause of abuse?

10/27/2022 0

Factors that may increase a person's risk of becoming abusive include:   A history of being abused or neglected as a child. Physical or mental illness, ... Read More

Explain how man’s activities may lead to soil erosion.

10/25/2022 0

Overgrazing Clearing land for agriculture Deforestation Road construction monoculture Read More

Explain how pregnancy is sustained until parturition.

10/15/2022 0

In the events of pregnancy Implantation Following fertilisation, the zygote divides (cleavage) mitotically until a hollow ball of cells, the blastocyst is produced. It takes ... Read More

Give effects of ectoparasites on their hosts    

10/15/2022 0

Ectoparasites such as ticks and lice can cause anaemia, weaken the host by sucking nutrients, blood and proteins from the host causing weight loss transmit ... Read More

In what ways is nitrogen added and removed from the soil.     

10/10/2022 0

  Ways is nitrogen added  to the soil industrial fixation e.g., Haber process mutualistic blue- green bacteria e.g., Rhizobium e.g. legume free- living blue- green ... Read More

How is reproduction in whale different from that of fish.

04/12/2022 0

Whales produce younger one alive while fish lay eggs. Whale undergo internal fertilization while fish undergo external fertilization. Read More

Give any one exotic breed of sheep kept for wool production.

04/04/2022 0

Romney marsh, Merino, Rambouillet, Blue Faced Leicester, and Corriedale Read More

UACE MATHEMATICS PAPER 2 2018 marking guide

03/13/2022 0

Please download PDF below: UACE MATHEMATICS PAPER 2 2018 marking guide Read More

UACE MATHEMATICS PAPER 1 2019 marking guide

03/11/2022 1

Please download PDF: UACE MATHEMATICS PAPER 1 2019 marking guide Read More

What is meant by primary productivity?

01/31/2022 0

It is the rate at which primary producer produce organic matter per unit area per unit time Read More

Explain the benefits of social behaviour to social animal. 

01/30/2022 0

Species in large groups suffer less predators even when the predator is successful; The chance that one is picked is very low. Predators are more ... Read More

Derive an expression for the angle of banking θ for a car of mass, m, moving at speed, v, round a banked tract of radius, r. (04marks)

10/03/2021 0

Please Subscribe to promote this website. Subscription is free Share with a friend Your comment is valuable Thank you so much Read More

What is Brittle material ?

10/03/2021 0

  A brittle material is a substance that breaks easily when a force is exerted on it e.g. glass, clay.   Please Subscribe to promote ... Read More

Use Newton’s second law to define the Newton.

10/03/2021 0

Consider a body of fixed mass, m acted on by constant force F and its velocity changes from u to v in time, t. The ... Read More

A-level mechanics revision questions fully answered

09/24/2021 0

List of physical constants to be used Acceleration due to gravity, g                                     9.81ms-2 Electron charge, e                                                            1.6 x10-19C Electron mass                                                                    9.11 x 10-31kg Mass of ... Read More

Basic trendsof amines

09/19/2021 0

Bacisity of amines   Like ammonia, amines dissolve in water to form alkaline solution. RNH2  + H2O ↔ RN+H3 + OH-(aq)   The strength of ... Read More

Using kinetic theory, explain boiling of a liquid 

09/18/2021 1

Using kinetic theory, explain boiling of a liquid Molecules of a liquid through moving randomly have attractive forces between them. When a liquid is heated, ... Read More

Explain the term stopping potential as applied to photo electric effect. 

09/05/2021 0

Explain the term stopping potential as applied to photo electric effect.  It is the minimum potential difference between the anode and the cathode that reduces ... Read More

With the aid of an equivalent circuit of a triode as an amplifier, obtain an expression for voltage gain

09/05/2021 0

With the aid of an equivalent circuit of a triode as an amplifier, obtain an expression for voltage gain Please Subscribe to promote this website. ... Read More

Polymerization of alkene

07/09/2021 0

Polymerization of alkene This is the is the joining of very many small molecules called monomers to form big molecules called polymers In presence of ... Read More

Laboratory preparation of alcohols

07/09/2021 0

  Please Subscribe to promote this website. Subscription is free Share with a friend Your comment is valuable Thank you so much Read More

Agriculture revision questions for agriculture 2 with answers

06/16/2021 0

Agriculture revision questions for agriculture 2 with answers Agricultural Economics 2021 By Mungudit Davious Munguthdavious800@gmail.com +256 394847/7531322587 (a) Describe the factors affecting labor efficiency (10marks)) ... Read More

Sex limited characters

06/05/2021 0

Sex limited characters These are characters that that show up exclusively in one sex only e.g. ovary in female alternatively testes are found in male ... Read More

Enthalpy of neutralization

05/28/2021 0

Enthalpy of neutralization This refers to enthalpy change for the formation 1 mole of water is formed from hydrogen and hydroxide ions H+(g) + -OH(aq) ... Read More

Mechanism of buffers

05/28/2021 0

Mechanism of buffers Consider a hypothetical weak acid, HA, in a solution with it salt MA. In this solution, HA, will be very slightly dissociated ... Read More

Describe the process of extraction of zinc from its ore

05/22/2021 1

Ores of Zinc zinc blende, ZnS calamine, ZnCO3 Extraction of Zinc from zinc blende Concentration of the ore by floatation method The finely pulverized ore ... Read More

Structure of cardiac muscle.

05/01/2021 0

Structure of cardiac muscle. This consists of a network of branched muscle fibers in the walls of the heart. The fibers are short, cylindrical, branching ... Read More

Distinguish between hybrid and hybrid vigour

04/27/2021 0

Differences between hybrid and hybrid vigour A hybrid is an offspring of a cross between two closely related but genetically distinct populations. A hybrid vigour, ... Read More

Adaptations of xerophytes to their ecology

04/18/2021 0

Adaptations of xerophytes to their ecology Xerophytes live in dry condition such as the desert. These plants run the risk of drastic dehydration and must ... Read More

Importance of bacteria

04/11/2021 0

Importance of bacteria Cause decay and recycling of matter Symbiotic bacteria in intestine synthesize vitamin B12 while those I herbivores produce enzyme cellulase to digest ... Read More

Modification of parenchyma tissue to suit its functions.

04/11/2021 0

Modification of parenchyma tissue to suit its functions. It forms irregular cells with storage granules and wide triangular intercellular spaces in the central pith of ... Read More

Derive an expression for focal length of a lens in terms of radii of curvature of its surfaces and its refractive index.

04/10/2021 0

Derive an expression for focal length of a lens in terms of radii of curvature of its surfaces and its refractive index. Consider a ray ... Read More

What is meant by interference and diffraction of light waves?

04/07/2021 0

What is meant by interference and diffraction of light waves? Diffraction is the spreading of light beyond the geometrical shadow leading to interference pattern just ... Read More

Explain why the amplitude of a wave goes on decreasing as the distance from the source increases

04/07/2021 2

Explain why the amplitude of a wave goes on decreasing as the distance from the source increases As the wave progresses, energy is continuously absorbed ... Read More

Derive the relationship between velocity, wavelength and frequency of a wave

04/03/2021 0

Derive the relationship between velocity, wavelength and frequency of a wave (03marks)   Consider a wave moving with speed, V. if in time T it ... Read More

Describe an experiment to determine the velocity of sound in air by an interference method. (06marks)

04/02/2021 1

Two small loud speakers a and b about 1m apart are connected to the same oscillator so that both emit sound waves of frequency, f, ... Read More

Optical instruments

03/26/2021 0

Optical instruments An optical instrument is a device that aids vision working on the principles of reflection and refraction of light. Examples are the human ... Read More

Plants -upper primary science

06/27/2020 0

PLANTS Plants are living things. As living things, plants show characteristics shown by other living things. Characteristic of living things Plants grow. They reproduce through ... Read More

Nervous system -Upper primary science

06/05/2020 0

Coordination   and control in animals Coordination means to cause the part to function together or in proper order. Coordination and control in animals is performed ... Read More

CURRICULUM VITAE FOR DR BBOSA SCIENCE

05/07/2020 10

CURRICULUM VITAE Dr. Bbosa David Science NIN: CM70032106MGSF Voter’s number: 6436201 Polling station: KiwangaLwanda All Saint’s Church Brief resume Dr. Bbosa David Science is a ... Read More

Dr. Bbosa Entertainment Series-videos

04/09/2020 0

https://youtu.be/hPa0ve4bUrk https://youtu.be/e_8xizIJ7dw https://youtu.be/Sf1WcGMstGw https://youtu.be/9A8kwnIsRkY https://youtu.be/jnyqzaWRK0c https://youtu.be/l5EXmgz3C5g https://youtu.be/Z5dHE4lOcdE https://youtu.be/ENBnfp-rH3k   Read More

ple 2015 integrated Science

04/09/2020 0

A revision video for PLE 2015 integrated science, well-illustrated for easy understanding Read More

Dissection Videos by Dr. Bbosa Science

04/09/2020 2

https://youtu.be/Lh_O5SA-zpM https://youtu.be/ajIaRAylVDo https://youtu.be/vwr8R30RMzY Read More

Join Us Today

04/09/2020 3

Digital Teachers is a free online teaching platform for both students and teachers especially students who are struggling with mathematics and other science subjects. Read More

Science Foundation College

04/09/2020 6

The Digital teachers in conjunction with The Science Foundation College are determined to attract students to science subjects through Print, Science videos and Music. This ... Read More

Why Digital Teachers?

04/09/2020 0

Online education is a natural fit for today’s teens. High school students have grown up with the Internet, and they use technology to connect with ... Read More

Digital Teachers

04/09/2020 0

Our teachers are all qualified teachers with experience in both examinations for years and they are sourced from different parts of the country Read More

Principles of refraction , refraction through a glass block and liquids (A-level physics)

03/13/2020 13

Refraction at plane surfaces Refraction is the bending of light at an interface between two media of different optical densities or it is the change ... Read More

Copper and its compounds (A-level inorganic chemistry)

02/27/2020 1

Copper and its compounds The electron configuration of copper 4s13d10 Properties of copper as a transition element Forms colored compounds; for instance Cu2+ is blue ... Read More