Fundamentals of Biochemistry-I

Hey there, Can you tell me what the SI unit for measuring temperature is?

• celsius

• fahrenheit

• kelvin

• rankine

Which of the following options best describes the main area of study in this exciting field?

• The examination of physical laws governing motion.

• The investigation of psychological phenomena.

• The analysis of molecular interactions and metabolic pathways in living organisms.

• The study of celestial bodies and their movements.

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B.SC

Hey there, Can you help figure out the value of the ideal gas constant (R) in energy per mole per Kelvin?

• 8.314 J/(mol·K)

• 0.0821 L·atm/(K·mol)

• 62.36 L·torr/(K·mol)

• 1.987 cal/(K·mol)

Can you explain the difference between molarity and molality?

• Molarity measures concentration in moles per liter of solution; molality measures concentration in moles per kilogram of solvent.

• Molarity measures mass per volume, while molality measures moles per liter.

• Molarity is the same as molality; both measure moles per liter.

• Molarity is used for gases, while molality is used for solids.

What exactly are isotopes? Give an example!

• Isotopes are like the cool cousins of a chemical element, having the same number of protons but different numbers of neutrons. For instance, think of Carbon-12 and Carbon-14 as the fun family members!

• Isotopes are those quirky elements that have the same number of neutrons but different protons. How interesting is that?

• Check this out: Oxygen-16 and Oxygen-18 are two sides of the same coin, both being isotopes of the same element!

• Isotopes are like the chameleons of the element world, showing different chemical properties while still being part of the same family.

How is molecular weight calculated?

• Molecular weight is the sum of the atomic weights of all atoms in a molecule.

• Molecular weight is determined by the size of the molecule.

• Molecular weight is the number of molecules in a sample.

• Molecular weight is calculated using the density of the substance.

What do you think is the significance of the mole concept in chemistry?

• The mole concept provides a standard method for quantifying and relating the amount of substance to its mass and number of particles.

• The mole concept measures temperature in reactions.

• The mole concept is irrelevant to chemical reactions.

• The mole concept is only used for gases.

What are these fascinating compounds and what do they do for our bodies?

• Carbohydrates are inorganic substances that do not provide energy.

• Carbohydrates are only for storing genetic information.

• Carbohydrates are proteins that help in muscle building.

• Carbohydrates are organic compounds that provide energy and serve as structural components.

What role do these amazing molecules play in biochemical reactions?

• Enzymes slow down reactions.

• Enzymes are catalysts that speed up reactions without being consumed.

• Enzymes are the end products of reactions.

• Enzymes are only found in plants.

Can you tell me what sets saturated fatty acids apart from unsaturated fatty acids?

• Saturated fatty acids have no double bonds; unsaturated fatty acids have one or more double bonds.

• Saturated fatty acids are solid at room temperature; unsaturated fatty acids are liquid.

• Saturated fatty acids are healthier than unsaturated fatty acids.

• Saturated fatty acids are found in animal fats; unsaturated fatty acids are found in plant oils.