Health and lifestyle Flashcards
(27 cards)
What are the main types of nutrients needed for a balanced diet?
A: Carbohydrates, proteins, fats, vitamins, minerals, fiber, and water.
Why are proteins important for the body?
A: Proteins are essential for growth, repair, and the maintenance of body tissues.
What test is used to detect the presence of glucose in food?
A: The Benedict’s test, which turns from blue to orange or brick red if glucose is present.
How do you test for proteins in food?
proteins turn the solution purple when present.
What are the effects of consuming too much saturated fat?
A: Increased risk of heart disease, obesity, and high cholesterol levels.
How does an unhealthy diet affect energy levels?
A: It can lead to fatigue, low concentration, and poor overall health.
What is the primary function of the digestive system?
A: To break down food into nutrients that the body can absorb and use.
What organ releases bile to help digest fats?
A: The liver releases bile, which is stored in the gallbladder.
How do bacteria help in digestion?
A: They break down complex food molecules and produce essential vitamins.
What is the function of enzymes in digestion?
A: Enzymes speed up the breakdown of food into simpler molecules for absorption.
What test is used to identify starch in food?
A: The iodine test—starch turns iodine solution blue-black.
What role does the pancreas play in digestion?
A: It produces enzymes that help break down carbohydrates, proteins, and fats.
What enzyme breaks down carbohydrates into simple sugars?
A: Amylase, which is found in saliva and the pancreas.
What mineral is essential for healthy plant growth?
A: Nitrates, which are needed for protein formation.
Why do leaves have stomata?
A: Stomata control gas exchange and water loss through transpiration.
What is the function of chlorophyll in leaves?
A: Chlorophyll absorbs light energy to drive photosynthesis.
Why do plants need magnesium?
A: Magnesium is required for chlorophyll production, which enables photosynthesis.
How does chemosynthesis differ from photosynthesis?
A: Chemosynthesis uses chemical energy instead of light to produce food.
What is the word equation for aerobic respiration?
A: Glucose + Oxygen → Carbon dioxide + Water + Energy.
What is an ecosystem?
A: A community of interacting organisms and their environment.
What is DNA?
A: DNA is the molecule that carries genetic information in all living organisms.
What are genes?
A: Genes are segments of DNA that determine traits in organisms.
What is genetic engineering?
A: The direct manipulation of an organism’s DNA to change its traits.
Magnesium =
Epsom salts
