question What is the primary function of deoxyribonucleic acid DNA in cells

Chemistry

What is the primary function of deoxyribonucleic acid (DNA) in cells?

A. Storing genetic information
B. Providing energy for cellular processes
C. Facilitating muscle contraction
D. Regulating blood glucose levels

DNA's primary function is to store genetic information in cells.

Which scientist proposed the uncertainty principle?

A. Werner Heisenberg
B. Niels Bohr
C. Max Planck
D. Erwin Schrödinger

The balanced chemical equation for the reaction between calcium carbonate (CaCO₃) and hydrochloric acid (HCl) is:

A. CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂
B. CaCO₃ + HCl → CaCl₂ + H₂O + CO₂
C. CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
D. CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O

What is the standard enthalpy change (ΔH°) for a chemical reaction carried out under standard conditions?

A. ΔH° = 0
B. ΔH° = 1 kJ/mol
C. ΔH° = -1 kJ/mol
D. Depends on the reaction

The chemical formula for ammonia is:

A. NH₄⁺
B. NH₃
C. NH₂Cl
D. NH₂OH

The reaction of an alkene with a peroxide to form an alkyl radical is known as:

A. Halogenation
B. Hydrogenation
C. Hydration
D. Anti-Markovnikov addition

The term "enthalpy" is often represented by the symbol:

A. H
B. E
C. G
D. S

In the periodic table, the lanthanides are located in which period?

A. Period 6
B. Period 4
C. Period 5
D. Period 7

The Kirchhoff's Law relates the change in enthalpy (ΔH) with temperature and:

A. Pressure
B. Volume
C. Entropy
D. Heat capacity

The balanced chemical equation for the reaction between hydrochloric acid (HCl) and sodium carbonate (Na₂CO₃) is:

A. 2HCl + Na₂CO₃ → 2NaCl + H₂O + CO₂
B. HCl + Na₂CO₃ → NaCl + H₂O + CO₂
C. 2HCl + Na₂CO₃ → NaCl + H₂O + CO₂
D. HCl + Na₂CO₃ → 2NaCl + H₂O + CO₂

The heat capacity ratio (γ) for a diatomic ideal gas is approximately:

A. 1.67
B. 1.4
C. 1
D. 2