Waec gce 2019 HEALTH EDUCATION ANSWERS5ai)Ageing or aging is the process of becoming older. The term refers especially to human beings, many animals, and fungi, whereas for example bacteria, perennial plants and some simple animals are potentiall biologically immortal.5aii)1)AGE SPOTS: As you age, your melanocytes (pigment cells) multiply more quickly and can cluster together to form age spots.2)SAGGING SKIN. Your skin produces less elastin and collagen over time3)DULL SKIN TONE. When dead skin cells build up on your face your youthful glow is compromised and your skin tone can appear dull.5b)• Enzymes help speed up chemical reactions in the human body.• They bind to molecules and alter them in specific ways.•  They are essential for respiration, digesting food, muscle and nervefunction, among thousands of other .4biiFatty FishLeafy GreensEggs5a)Ageing or aging is the process of becoming older. The term refers especially to human beings, many animals, and fungi, whereas for example bacteria, perennial plants and some simple animals are potentiall biologically immortal.5aii)1)AGE SPOTS: As you age, your melanocytes (pigment cells) multiply more quickly and can cluster together to form age spots.2)SAGGING SKIN. Your skin produces less elastin and collagen over time3)DULL SKIN TONE. When dead skin cells build up on your face your youthful glow is compromised and your skin tone can appear dull.*7a Three types of Bleeding.**i Arterial*With this type of bleeding, the blood is typically bright red to yellowish in colour, due to the high degree of oxygenation. A wound to a major artery could result in blood ‘spurting’ in time with the heartbeat, several meters and the blood volume will rapidly reduce.*ii Venous*This blood is flowing from a damaged vein. As a result, it is blackish in colour (due to the lack of oxygen it transports) and flows in a steady manner. Caution is still indicated: while the blood loss may not be arterial, it can still be quite substantial, and can occur with surprising speed without intervention.iii *Capillary*Bleeding from capillaries occurs in all wounds. Although the flow may appear fast at first, blood loss is usually slight and is easily controlled. Bleeding from a capillary could be described as a ‘trickle’ of blood.The key first aid treatment for all of these types of bleeding is direct pressure over the wound.

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Waec gce 2019 HEALTH EDUCATION ANSWERS5ai)Ageing or aging is the process of becoming older. The term refers especially to human beings, many animals, and fungi, whereas for example bacteria, perennial plants and some simple animals are potentiall biologically immortal.5aii)1)AGE SPOTS: As you age, your melanocytes (pigment cells) multiply more...