30 Questions
What is the primary purpose of cellular respiration?
To make adenosine triphosphate (ATP)
Which process in plants involves the synthesis of glucose?
Photosynthesis
What is the indicator of glucose when testing with Benedic solution?
Red color
Which of the following is true about glucose, galactose, and fructose?
They are all isomers
What is the result of a dehydration reaction between two monosaccharides?
Formation of disaccharides
Why is it important to maintain a constant level of glucose in human blood?
To avoid diabetes mellitus
What is a compound?
A substance made of atoms of different elements bonded together in a certain ratio
Which element is needed to transport oxygen in the blood?
Iron (Fe)
What is the smallest unit of a chemical element?
Atom
Which of the following is NOT a trace element found in the body?
Carbon (C)
What is formed when two atoms of oxygen combine chemically?
$O_2$ molecule
What is the function of Chromium (Cr) in the body?
Break down sugars for usable energy
What is the main difference between Saturated Fatty Acids and Unsaturated Fatty Acids?
Presence of double bonds
Why are Essential Fatty Acids important in the diet?
Because they are not synthesized by the human body
What makes Omega-3 fatty acids essential for humans?
They are not synthesized by the human body
Which lipid category do Triglycerides fall into?
Simple Lipids
What is the main function of Waxes in biological systems?
Structural component
Why are Omega-3 fatty acids considered important for preventing heart disease?
They lower cholesterol levels
What is the main function of lipids in the body?
Protection against heat loss
Which of the following is NOT a function of lipids as mentioned in the text?
Digestion of proteins
What is the purpose of the waxy coating produced by fruits mentioned in the text?
To prevent dehydration
Which of the following is NOT a common type of steroid as per the text?
Insulin
Where are fats typically found in animals based on the information provided?
In food like meat and butter
What are the two main components of a lipid molecule like a triglyceride?
Glycerol and fatty acids
What type of charge does the phosphate group carry?
Negative charge
Which part of a phospholipid is hydrophobic?
Fatty acid tails
What function do steroids have in human and animal bodies?
Messenger and pigment
Which hormone is synthesized from cholesterol in the liver?
Estrogens
What is the precursor to many steroid hormones in the body?
Cholesterol
Where is cholesterol mainly synthesized in the body?
Liver
Explore the significance of lipids in biology through functions such as storing energy, forming cell structures, insulating the body, and producing hormones. Discover how lipids play a crucial role in waterproofing surfaces and protecting internal organs.
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