Discus the adoption of capital intensive strategy of economic development in developing countries
Capital intensive strategy is a strategy employed in the production process where more of capital is used as compared to labour force. LDC should adopt ... Read More
Explain why changes in national Income of a country do not necessarily imply change in economic and social welfare of its citizen.
Type of goods produced. National income increases when a country produces capital goods, which do not necessarily improve welfare in the short run When people ... Read More
A-level math paper 1 Mathematical series
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Distinguish between standard of living and cost of living
Standard of living refers to conditions of living as measured in terms welfare or material wellbeing. It is usually indicated by the quantity of goods ... Read More
Using illustrations distinguish between profit maximization positions of perfect competitive and monopolistic firms in the long run
Note that the curves are not random (i) Long run-profit maximization of a firm under perfect competition. Due to abnormal profit enjoyed by firms in ... Read More
What are the underlying assumptions of a free market?
There are many buyers and sellers in the market. Each one being to small to determine the output or pricing decision of an industry There ... Read More
What are the augment for and against government control of prices for essential goods?
Arguments for government control of prices of essential good Price stability: resale price maintenance ensures that prices are stable since retailers cannot increase the set ... Read More
Using a diagram, explain what is meant by minimum and maximum prices
A minimum price is a price set by the government above equilibrium price below which it is illegal to sell or by a commodity. It ... Read More
Distinguish between money wages from real wages
Money wage is the wage (earning) of a worker measured in monetary terms while real wage is the purchasing power of the money wage Read More
(ii) Calculate the multiplier magnitude when the marginal propensity to consume is 0.6
Multiplier = 1/MPS = 1/(1-MPC) = 1/(1- 0.6) = 1/0.4 = 2.5 Read More
Define income multiplier
It is the number of times a change in total autonomous expenditure multiplies its self to give rise to a final change in the level ... Read More
What is meant by reserve price
This is a price below which a seller is not willing to sell his product. It could be due to the nature of good, speculation ... Read More
What is meant by resale price maintenance
This is the price set by the producer/manufacturers of a product and it is maintained up to the final consumer e.g. the price of a ... Read More
Give circumstances where the demand for commodity may not fall despite a rise in cost
This leads to abnormal demand curve since a rise in cost of a commodity will lead to increase in price of it even though not ... Read More
Explain the term opportunity cost
This is the cost of an alternative foregone or sacrificed. It is referred to as real cost or alternative cost or increment cost. For example ... Read More
What is meant by marginal product?
The marginal product of an input, say labour, is defined as the extra output that results from adding one unit of the input to the existing ... Read More
State four physiological differences between C3 and C4 plants.
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.
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?
Dairy products such as cheese, cottage cheese, milk and yogurt, although rich in calcium, have negligible iron content Read More
Describe two force that enable water to move up the xylem vessels in a continuous column.
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
A-level math paper 1 Permutations and combinations
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What part is played by the mammalian skin in excretion?
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
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
What is the main cause of abuse?
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
A-level math paper 1 Polynomials
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Methods to reduce soils erosion are
Afforestation Planting grass cover Mulching Strip cropping Terracing Contour cropping Read More
Explain how man’s activities may lead to soil erosion.
Overgrazing Clearing land for agriculture Deforestation Road construction monoculture Read More
Types of soil erosion
Sheet erosion: the surface of the soil is removed evenly over the whole surface of a slope Rill erosion: top soil is removed to an ... Read More
What is soil erosion?
It is the washing away to soil Read More
Effects of adrenaline in the body.
increase rate of heart beat increases rate of breathing increases metabolic rate increase blood pressure and increases blood flow to brain and muscle enlarges pupil ... Read More
What’s the difference between endocrine and exocrine glands?
Exocrine glands secrete their substances through ducts onto your body's surfaces. On the other hand, endocrine glands secrete their substances directly into your bloodstream Read More
What are the differences in blood contents between the blood carried by hepatic portal vein and hepatic vein?
Blood in the hepatic portal vein is rich in nutrients from the intestine Read More
Name the constituents of the mammalian blood
plasma, red blood cells, white blood cells, and platelets, water, food nutrients (glucose, amino acids, fatty acids, vitamins), waste products (like urea and ammonia) hormones, ... Read More
How does clay affect the fertility of soil?
Contain plant nutrients Increases soil capillarity Increase soil water retention Provide firm anchorage to the plants Read More
Explain the value/importance of earthworms in maintaining a condition suitable for crop growing.
. Tunnels improve aeration and drainage of soil causes decay and formation of humus source of food to other animals e.g. chicken die and rot ... Read More
Describe an experiment to demonstrate hydrotropism in plant roots and shoots.
Hydrotropism: 1. Hydrotropic movements refer to a plant's movement or growth in response to a water stimulus, while hydrotropism refers to the analogous response to ... Read More
Benefits of studying genetics
helps researchers develop new strategies to treat and prevent human disease. Help to understand more about the genetic basis of human diseases. Genetic engineering such ... Read More
Distinguish between dominant and recessive genes
A dominant gene is the one that expresses itself entirely in heterozygous state while a recessive gene is one masked in heterozygous state Read More
Distinguish between phenotype and genotype
Phenotype is the physical characteristic of an organism determined by the genotype and the environment. Genotype is the genetic constitution of an organism i.e. the ... Read More
Adaptations of fish for locomotion/swimming
Streamline shape reduces friction Eye to see in water Pectoral, pelvic and ventral fins for balancing. Slippery body reduce friction Has gills to extract oxygen ... Read More
What is a multiple allele?
The presence of three or more alleles for a given gene is referred to as multiple alleles. Read More
What are sex-linked genes?
Sex linked genes are those that sit on sex chromosomes and that are inherited differently in males and females Read More
What is codominance
Codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. Read More
What does heterozygote mean?
Heterozygous refers to having different alleles for a particular trait Read More
What happens when onion epidermis is placed in strong sugar solution
The cells of the epidermis placed in strong sugar solution lost water by osmosis, and became flaccid Read More
What happens when onion epidermis is placed in water
The cells of the epidermis placed in pure water gained water by osmosis, swell and became turgid Read More
When mucus fills the Eustachian tube, hearing is impaired. Explain why.
It may causes increase in pressure in the middle air which distorts vibration of the eardrum and ossicles Read More
How does the blockade of Eustachian tube affect hearing?
Obstruction or blockage of the Eustachian tube results in a negative middle ear pressure, which will cause the ear drum to retract (suck in). In ... Read More
What is the function of hair and wax in ear canal
Wax and protects the ear from invasion of organisms and keeps away dirt and debris from the ear drum Read More
Adaptations of insect pollinated flowers and wind pollinated flowers
Note that there is a difference between characteristics and adaptations of flowers Adaptations of Insects pollinated flowers brightly colored petals to attract pollinators scented to ... Read More
The importance of a skeleton to an organism
Hydrostatic skeleton provides support form movement Exoskeleton1.It minimize water loss by evaporation 2.It protects the internal soft tissue 3.It determine maximum size of the organism ... Read More
Types of skeletons
There are three types of skeleton Hydrostatic skeleton Here support is provided by a fluid under pressure and it is found in round worms, earthworm. ... Read More
Parts of motor neuron/nerve
Functions of parts of nerve cell Nerve fibre or axon transmits impulses The myelin sheath protects the axon; it also insulates the axon and speeds ... Read More
Functions of parts of nerve cell
Nerve fibre or axon transmits impulses The myelin sheath protects the axon; it also insulates the axon and speeds up transmission of impulse. Nucleus controls ... Read More
What happens to old red blood cells in the body?
Old or damaged RBCs are removed from the circulation by macrophages in the spleen and liver, and the hemoglobin they contain is broken down into heme ... Read More
What substances are secreted from sweat glands?
urea, water, sodium chloride, lactate Read More
A-level math paper 1 Inequalities
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Adaptations of a bony fish to movement in water
- has streamline shape to reduce drag force - has tail fin for propulsion - has fins for stability - has slippery body to reduce ... Read More
Differences between bones and cartilages
Differences between bones and cartilages Bones Cartilages 1 Bone is tough and hard Cartilage is soft and flexible 2 Bones cannot bend Cartilages ... Read More