Correct Answer: C. four slices of yam and stew, two pieces of beef, one cup of tea with milk and two oranges

Correct Answer: B. C6H12O6 -----> 2C3H4O3 + 4H + 2ATP

Correct Answer: B) in fumigated silos

Explanation

Maize is a type of grain that is often used as a food source for both humans and animals. However, it is susceptible to insect attacks during storage which can lead to significant losses. The question is asking how maize can be best stored to protect it against insect attack. Option A suggests that maize can be stored on a raised platform. While this may help to keep the maize dry and prevent it from being in contact with the ground, it does not provide protection against insect attack. Option B suggests that maize can be stored in fumigated silos. This is the correct answer as fumigation involves the use of chemicals that kill insects and their eggs, thereby protecting the maize against insect attack. Option C suggests that maize can be stored while still on the cob. However, this does not provide any protection against insect attack and may even make the maize more vulnerable. Option D suggests that maize can be stored in humid metal tanks. This is not a good option as high humidity can encourage the growth of mold and other fungi which can further damage the maize. In summary, the best way to store maize to protect it against insect attack is to store it in fumigated silos.

Correct Answer: B. passing it through the mouth

Explanation

(a)(i) What is a gene? Genes are units of heredity located in the chromosomes which are responsible for the coding of a particular protein to transfer trait or character from parents to offspring.

(ii) Differentiate between the terms genotype and phenotype: Genotype is the genetic make-up of genes in an organism that is independent of the environment while a phenotype is all observable features, appearance of the organism that is determined by the environment and the genotype.

(b) Explain the following terms:

(i)Hybrid: Offspring produced from a cross between two parents with contrasting characters.

(ii)Pure-breeding: A process of producing a particular genotype over many generations.

(iii)Nucleotides: The basic building block of a nucleic acid consisting of a ribose, deoxyribose. protein, a phosphate group and a nitrogen base.

(c) In a garden, pea seeds, smooth seed coat is dominant over rough feed coat. With the aid of a genetic diagram, determine the result expected if a homozygous rough pea is crossed with a smooth seed coat plant whose parents were rough coated.

Correct Answer: C. broad leaves

Correct Answer: C) Mitochondrion

Explanation

The question is asking which of the following structures is not found inside the nucleus of a cell. The options are: A) Chromosomes, B) Nucleolus, C) Mitochondrion (which is correct), and D) Genes. The nucleus is a very important part of the cell that contains the genetic material of the cell, which is responsible for controlling the cell's activities. Chromosomes are long strands of DNA that carry the genetic information of the cell and are found inside the nucleus. The nucleolus is a small structure within the nucleus that is responsible for the production of ribosomes, which are essential for protein synthesis. Genes are also present inside the nucleus and are responsible for encoding the proteins that carry out various functions in the cell. However, mitochondria are not found inside the nucleus of a cell. Mitochondria are organelles that are responsible for generating energy for the cell through a process called cellular respiration. They have their own DNA and replicate independently of the nucleus, and they are found in the cytoplasm of the cell. In summary, the correct answer to this question is option C: Mitochondrion. To learn more about the cell and its structures, you can read relevant sections of recommended textbooks.

Correct Answer: A) cross-breeding

Explanation

In Biology, offspring inherit traits from their parents. Sometimes, these traits are desirable, and people want to combine them to get the best qualities in their offspring. The question is asking about the surest way to do this. The options provided are cross-breeding, inbreeding, selective breeding, and all of the above. The correct answer is cross-breeding. Cross-breeding involves breeding two different individuals with desirable traits to produce offspring that inherit the best qualities of both parents. This method helps to increase genetic diversity, which is important for the survival of the species. Inbreeding, on the other hand, involves breeding closely related individuals, which can increase the probability of genetic diseases and decrease genetic diversity. Selective breeding involves choosing individuals with desirable traits and breeding them to produce offspring with those traits. This method can be effective but can also reduce genetic diversity if not done carefully. Therefore, the best way to combine the best qualities of both parents in the offspring is through cross-breeding. To learn more about this, please read the relevant sections of the recommended textbooks.

Correct Answer: D. organic evolution

Correct Answer: C. Ovule