Importance of Lipids in Biology

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What is the primary purpose of cellular respiration?

To synthesize water
To produce glucose
To make adenosine triphosphate (ATP) (correct)
To create carbon dioxide

Which process in plants involves the synthesis of glucose?

Fermentation
Photosynthesis (correct)
Dehydration reaction
Cellular respiration

What is the indicator of glucose when testing with Benedic solution?

Yellow color
Red color (correct)
Blue color
Green color

Which of the following is true about glucose, galactose, and fructose?

They are all isomers (A) Signup and view all the answers

What is the result of a dehydration reaction between two monosaccharides?

Formation of disaccharides (C) Signup and view all the answers

Why is it important to maintain a constant level of glucose in human blood?

To avoid diabetes mellitus (B) Signup and view all the answers

What is a compound?

A substance made of atoms of different elements bonded together in a certain ratio (C) Signup and view all the answers

Which element is needed to transport oxygen in the blood?

Iron (Fe) (C) Signup and view all the answers

What is the smallest unit of a chemical element?

Atom (D) Signup and view all the answers

Which of the following is NOT a trace element found in the body?

Carbon (C) (C) Signup and view all the answers

What is formed when two atoms of oxygen combine chemically?

$O_2$ molecule (C) Signup and view all the answers

What is the function of Chromium (Cr) in the body?

Break down sugars for usable energy (D) Signup and view all the answers

What is the main difference between Saturated Fatty Acids and Unsaturated Fatty Acids?

Presence of double bonds (D) Signup and view all the answers

Why are Essential Fatty Acids important in the diet?

Because they are not synthesized by the human body (C) Signup and view all the answers

What makes Omega-3 fatty acids essential for humans?

They are not synthesized by the human body (C) Signup and view all the answers

Which lipid category do Triglycerides fall into?

Simple Lipids (C) Signup and view all the answers

What is the main function of Waxes in biological systems?

Structural component (C) Signup and view all the answers

Why are Omega-3 fatty acids considered important for preventing heart disease?

They lower cholesterol levels (B) Signup and view all the answers

What is the main function of lipids in the body?

Protection against heat loss (C) Signup and view all the answers

Which of the following is NOT a function of lipids as mentioned in the text?

Digestion of proteins (C) Signup and view all the answers

What is the purpose of the waxy coating produced by fruits mentioned in the text?

To prevent dehydration (D) Signup and view all the answers

Which of the following is NOT a common type of steroid as per the text?

Insulin (A) Signup and view all the answers

Where are fats typically found in animals based on the information provided?

In food like meat and butter (D) Signup and view all the answers

What are the two main components of a lipid molecule like a triglyceride?

Glycerol and fatty acids (C) Signup and view all the answers

What type of charge does the phosphate group carry?

Negative charge (D) Signup and view all the answers

Which part of a phospholipid is hydrophobic?

Fatty acid tails (B) Signup and view all the answers

What function do steroids have in human and animal bodies?

Messenger and pigment (A) Signup and view all the answers

Which hormone is synthesized from cholesterol in the liver?

Estrogens (C) Signup and view all the answers

What is the precursor to many steroid hormones in the body?

Cholesterol (C) Signup and view all the answers

Where is cholesterol mainly synthesized in the body?

Liver (B) Signup and view all the answers