Biology: Sense Organs and Biomolecules
This test will help the students to revise the sense organs and various biomolecules of life thoroughly as it contains the questions fro these topics.
Questions
Which among the following statements does not characterise unsaturated fats?
- Double bonds may be in either a cis or a trans isomer.
- Unsaturated fats are popular with manufacturers of processed foods.
- Unsaturated chains have a lower melting point.
- Replacing saturated fats with unsaturated fats helps to lower levels of total cholesterol in human beings.
- Meat products contain both saturated and unsaturated fats.
Which among the following fatty acids is capable of inhibiting the destruction of insulin secreting pancreatic beta cells in the human beings?
- Palmitoleic acid
- Propanoic acid
- Butyric acid
- Valeric acid
- Hexanoic acid
Which of the following amino acids is responsible for strengthening the immune system with a positive influence on the male libido?
- Arginine
- Carnitine
- Methionine
- Ornithine
- Taurine
Myoglobin is a protein found in the heart and skeletal muscles of the body. It belongs to the group of
- phosphoproteins
- glycoproteins
- lipoproteins
- nucleoproteins
- chromoproteins
Which among the following lipids act as an antioxidant and as a precursor of vitamin A in humans?
- Glycerophospholipids
- Sterol lipids
- Prenol lipids
- Glycerolipids
- Sphingolipids
Which among the following is a non-reducing sugar?
- Sucrose
- Maltose
- Glucose
- Galactose
- Lactose
Breast milk is the primary source of nutrition for newborns before they are able to eat and digest other foods. The fatty acid present in human breast milk is
- α-linolenic acid
- dihomo-γ-linolenic acid
- eicosapentaenoic acid
- linoleic acid
- gamma-linolenic acid
Omega 7 fatty acids are generally quite rare and are considered as a natural and healthy form of trans-fats. An omega-7 trans fat found in the dairy products is
- nervonic acid
- punicic acid
- oleic acid
- α-Parinaric acid
- rumenic acid
The lipids most commonly used in anti-microbial and anti-cancer agents are
- phospholipids
- steroids
- waxes
- saccharolipids
- polyketides
________ are frequently referred to as bad lipoproteins.
- High-density lipoproteins
- Low-density lipoproteins
- Intermediate-density lipoproteins
- Chylomicrons
- Very low density lipoproteins
The fatty acid used as an additive in cigarettes is
- heptanoic acid
- caprylic acid
- nonanoic acid
- lauric acid
- tridecylic acid
Protein structure is the biomolecular structure of a protein molecule. Which of the following statments regarding the tertiary structure of proteins is incorrect?
- Hydrophobic interactions also contribute to the tertiary structure.
- Hydrogen bonds are also present in the tertiary structure of proteins.
- Electrostatic interactions are present between charged amino acid chains.
- The folding of the polypeptide chain is stabilised by strong, non-covalent interactions.
- The linear sequence of polypeptide chain is folded into compact globular structure.
The fatty acid obtained from the cyanobacterium Spirulina is
- paullinic acid
- lignoceric acid
- α-linolenic acid
- stearidonic acid
- gamma-linolenic acid
Casein and collagen are examples of
- scleroproteins
- globulins
- albumins
- metalloproteins
- protamines
Which among the following amino acids inhibits the growth of hair and nails in the body?
- Asparagine
- Cystine
- Cysteine
- Glycine
- Glutamine
Which of the following statements is incorrect regarding triglycerides?
- In triglyceride form, lipids can be absorbed by the jejunum.
- The process of lipolysis takes place in the intestine.
- Triglycerides form chylomicrons.
- Liver cells can synthesise and store triglycerides.
- Human brain cannot utilise fatty acids as an energy source.