State one function each of the following structures in humans: i. Vitreous humour of the eye ii. Hammer of the ear (Malleus) iii. Fovea of the eye iv. Organ of Corti of the ear v. Cochlea of the ear.

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Asked on May 24, 2026Biology

This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.

Accepted Answer · 2026-05-24T22:00:52.782Z

Here are the solutions to the questions: 1.a) State one function each of the following structures in humans: i. Vitreous humour of the eye: Maintains the spherical shape of the eyeball and helps to refract light onto the retina. ii. Hammer of the ear (Malleus): Transmits sound vibrations from the eardrum (tympanic membrane) to the incus. iii. Fovea of the eye: Responsible for sharp central vision and detailed color perception. iv. Organ of Corti of the ear: Converts mechanical sound vibrations into electrical nerve impulses. v. Cochlea of the ear: Contains the sensory receptors for hearing. 1.b) State three differences between compounds and mixtures: Compounds are formed by the chemical combination of elements in fixed proportions, while mixtures are formed by the physical combination* of substances in variable proportions. Compounds have new properties that are different from their constituent elements, whereas mixtures retain the properties* of their individual components. Components of a compound cannot be separated by physical means, while components of a mixture can be separated by physical means*. 1.c) i. Consider the reaction: ^14_6C ^14_7N + ^0_-1e α. Name the radiation emitted: The radiation emitted is a beta particle*. β. Name one material that could be used to stop the emitted radiation: Aluminum* can be used to stop beta radiation. 1.d) i. Define resistance of a conductor. Resistance is the opposition to the flow of electric current in a conductor. It is measured in ohms (). 1.d) ii. Calculate the effective resistance in the circuit below. Step 1: Calculate the equivalent resistance of the two 2 resistors connected in series. R_series = R_1 + R_2 R_series = 2\, + 2\, = 4\, Step 2: Calculate the effective resistance of the parallel combination, where the 4\, series resistance is in parallel with the 3\, resistor. (1)/(R_effective) = (1)/(R_series) + (1)/(R_3) (1)/(R_effective) = (1)/(4\,) + (1)/(3\,) (1)/(R_effective) = (3)/(12\,) + (4)/(12\,) (1)/(R_effective) = (7)/(12\,) R_effective = (12)/(7)\, R_effective ≈ 1.71\, The effective resistance is (12)/(7)\, or 1.71\,. Send me the next one 📸

Accepted Answer · 2026-05-24T22:00:52.782Z

Here are the solutions to the questions: 1.a) State one function each of the following structures in humans: i. Vitreous humour of the eye: Maintains the spherical shape of the eyeball and helps to refract light onto the retina. ii. Hammer of the ear (Malleus): Transmits sound vibrations from the eardrum (tympanic membrane) to the incus. iii. Fovea of the eye: Responsible for sharp central vision and detailed color perception. iv. Organ of Corti of the ear: Converts mechanical sound vibrations into electrical nerve impulses. v. Cochlea of the ear: Contains the sensory receptors for hearing. 1.b) State three differences between compounds and mixtures: Compounds are formed by the chemical combination of elements in fixed proportions, while mixtures are formed by the physical combination* of substances in variable proportions. Compounds have new properties that are different from their constituent elements, whereas mixtures retain the properties* of their individual components. Components of a compound cannot be separated by physical means, while components of a mixture can be separated by physical means*. 1.c) i. Consider the reaction: ^14_6C ^14_7N + ^0_-1e α. Name the radiation emitted: The radiation emitted is a beta particle*. β. Name one material that could be used to stop the emitted radiation: Aluminum* can be used to stop beta radiation. 1.d) i. Define resistance of a conductor. Resistance is the opposition to the flow of electric current in a conductor. It is measured in ohms (). 1.d) ii. Calculate the effective resistance in the circuit below. Step 1: Calculate the equivalent resistance of the two 2 resistors connected in series. R_series = R_1 + R_2 R_series = 2\, + 2\, = 4\, Step 2: Calculate the effective resistance of the parallel combination, where the 4\, series resistance is in parallel with the 3\, resistor. (1)/(R_effective) = (1)/(R_series) + (1)/(R_3) (1)/(R_effective) = (1)/(4\,) + (1)/(3\,) (1)/(R_effective) = (3)/(12\,) + (4)/(12\,) (1)/(R_effective) = (7)/(12\,) R_effective = (12)/(7)\, R_effective ≈ 1.71\, The effective resistance is (12)/(7)\, or 1.71\,. Send me the next one 📸

State one function each of the following structures in humans: i. Vitreous humour of the eye ii. Hammer of the ear (Malleus) iii. Fovea of the eye iv. Organ of Corti of the ear v. Cochlea of the ear.

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State one function each of the following structures in humans: i. Vitreous humour of the eye ii. Hammer of the ear (Malleus) iii. Fovea of the eye iv. Organ of Corti of the ear v. Cochlea of the ear.

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