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BIO NMDCAT

1785 questions found

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📁 ACELLULAR LIFR 20 📁 AIDS and HIV Infection 50 📁 and nerve impulse Reflexes and reflex arc 0 📁 Arthritis 0 📁 axon 0 📁 BIOENERGETICS 0 📁 Biological Importance of Water 95 📁 BIOLOGICAL MOLECULES 126 📁 Biotechnology 0 📁 Biotechnology and Health Care 0 📁 Blood Vessels 0 📁 Brain 25 📁 Carbohydrates 100 📁 Cardiac cycle and phases of Heartbeat 0 📁 cell body 0 📁 cell membrane 70 📁 CELL STRUCTURE & FUNCTION 100 📁 Chromosomes 76 📁 Circulation 0 📁 Concept of Evolution 50 📁 Conjugated molecules 100 📁 COORDINATION & CONTROL NERVOUS & CHEMICAL COORDINATION 0 📁 Cytoplasmic Organelles 75 📁 Darwinism 50 📁 dendrites 0 📁 DIVERSITY AMONG ANTMALS (THE KTNGDOM ANIMALIA) 0 📁 ENZYMES 108 📁 EVOLUTION 0 📁 Factors that Affect the Rate of Enzyme Reactions 60 📁 Form and Function in Plants 0 📁 Gene linkage and crossing over 0 📁 Homeostasis (kidney specifically) 0 📁 Homeostasis Mainly Kidney Portion nmdcat etea 0 📁 Human Heart 0 📁 Human Reproductive system 0 📁 Human Reproductive system-Menstrual cycle 0 📁 Human skeleton 0 📁 INHERITANCE 0 📁 Inhibitors 40 📁 Joints 0 📁 Lamarckism 50 📁 Lipids 45 📁 lmmunity 0 📁 Lymphatic system 0 📁 Mendel's laws of Inheritance 0 📁 Menstrual cycle 0 📁 Mode of Enzyme Action 60 📁 Muscle contraction 0 📁 Muscles 0 📁 myelin sheath 0 📁 Neurons 41 📁 PROKARYOTES (KTNGDOM MONERA) 0 📁 Prokaryotic and Eukaryotic cell 0 📁 Proteins 95 📁 Receptors 40 📁 REPRODUCTION 0 📁 Respiration 15 📁 Respiratory system 0 📁 Ribonucleic acid (RNA) 100 📁 Sexually transmitted diseases 50 📁 Skeletal muscles 0 📁 Specific Defense Mechanism 0 📁 Structure of DNA 98 📁 SUPPORT & MOVEMENT 0 📁 Viruses 46 📁 X-linked Recessive inheritance 0

Practice Questions

Membrane phospholipids orient themselves with fatty acid tails toward

A. Water
B. Interior of the bilayer
C. Extracellular fluid only
D. Cell wall

Hydrophobic tails avoid water and remain inside the membrane.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Glycerol is regarded as a trihydric alcohol because it possesses

A. Three amino groups
B. Three hydroxyl groups
C. Three phosphate groups
D. Three carboxyl groups

Glycerol contains three hydroxyl (-OH) groups.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Complete esterification of glycerol requires

A. One fatty acid
B. Two fatty acids
C. Three fatty acids
D. Four fatty acids

Each hydroxyl group of glycerol forms one ester bond with a fatty acid.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Biological membranes retain flexibility primarily because phospholipids

A. Contain proteins only
B. Move laterally within the bilayer
C. Are permanently fixed
D. Possess cellulose fibers

Phospholipids exhibit lateral movement, contributing to membrane fluidity.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Fatty acids with one or more carbon-carbon double bonds are described as

A. Saturated
B. Unsaturated
C. Neutral
D. Aromatic

Double bonds are the defining feature of unsaturated fatty acids.

nmdcat.online BIO NMDCAT
Jun 27, 2026

During lipid synthesis, water molecules are

A. Released
B. Consumed without replacement
C. Converted into ATP
D. Unaffected

Condensation reactions release water during ester bond formation.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Phospholipids are especially abundant in

A. Bone matrix
B. Plasma membranes
C. Hair proteins
D. Blood pigments

Phospholipids form the structural framework of cellular membranes.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Greater energy yield from triglycerides compared with carbohydrates results mainly from

A. Lower carbon content
B. Higher degree of reduction
C. Presence of nitrogen
D. Lower hydrogen content

Lipids contain more hydrogen atoms and fewer oxygen atoms, producing more ATP upon oxidation.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Digestion of dietary triglycerides begins predominantly in the

A. Mouth
B. Small intestine
C. Large intestine
D. Esophagus

Pancreatic lipase acts mainly in the small intestine after emulsification by bile salts.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Fatty acids are attached to glycerol through

A. Hydrogen bonds
B. Ester linkages
C. Ionic bonds
D. Peptide bonds

Ester linkages form between glycerol hydroxyl groups and fatty acid carboxyl groups.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Phospholipids differ from triglycerides by containing

A. One phosphate group replacing one fatty acid
B. Four fatty acids
C. No glycerol
D. No ester bonds

A phospholipid has two fatty acids and one phosphate-containing group attached to glycerol.

nmdcat.online BIO NMDCAT
Jun 27, 2026

A triglyceride molecule containing three different fatty acids is classified as

A. Simple triglyceride
B. Mixed triglyceride
C. Phospholipid
D. Wax

Mixed triglycerides contain two or three different fatty acids attached to glycerol.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Increased unsaturation in fatty acids generally causes lipids to become

A. More solid at room temperature
B. More fluid at room temperature
C. Completely insoluble
D. Chemically inactive

Double bonds introduce bends that reduce tight packing of fatty acid chains.

nmdcat.online BIO NMDCAT
Jun 27, 2026

The phosphate group in phospholipids contributes mainly to

A. Energy storage
B. Hydrophilic property
C. Ester bond formation
D. Fatty acid synthesis

The phosphate-containing head is polar and interacts with water.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Cellular membranes exhibit selective permeability mainly because of the presence of

A. Triglycerides
B. Phospholipid bilayer
C. Glycogen
D. Cellulose

Phospholipids arrange into a bilayer with hydrophilic heads outward and hydrophobic tails inward, forming a selectively permeable membrane.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Formation of an ester bond during lipid synthesis occurs between

A. Two fatty acids
B. A hydroxyl group of glycerol and a carboxyl group of a fatty acid
C. Two amino acids
D. A phosphate and a sugar

Esterification joins glycerol and fatty acids by removing one molecule of water.

nmdcat.online BIO NMDCAT
Jun 27, 2026

Lipids generally exhibit high solubility in

A. Water
B. Organic solvents
C. Blood plasma
D. Dilute acids
nmdcat.online BIO NMDCAT
Jun 27, 2026

Esterification of glycerol with fatty acids results in the formation of

A. Amino acids
B. Acylglycerols
C. Polysaccharides
D. Nucleotides
nmdcat.online BIO NMDCAT
Jun 27, 2026

The hydrophobic region of a phospholipid consists of

A. Phosphate group
B. Fatty acid tails
C. Glycerol only
D. Protein chains
nmdcat.online BIO NMDCAT
Jun 27, 2026
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