Explanation

• The induced fit model proposes that the active site of an enzyme is flexible and changes shape until the substrate binds, much like a glove molding to fit a hand.
• This model suggests that the enzyme adapts to the substrate, rather than the substrate simply fitting into a pre-existing lock.

Explanation

• Non-disjunction is the phenomenon where a pair of homologous chromosomes (or a pair of sister chromatids) fails to separate properly during meiosis.
• Resulting in an abnormal number of chromosomes in the daughter cells.
• This can lead to genetic abnormalities, such as Down syndrome (trisomy 21), or other chromosomal disorders.

Explanation

Leucocytes are also known as white blood cells.

They are colorless, irregularly shaped, nucleated cells that are larger in size compared to red blood cells (RBCs).

They play a vital role in the immune system, helping to fight infections and diseases.

Explanation

The G1 phase (Gap 1 phase) is the period of extensive metabolic activity in the cell cycle where the cell grows, enzymes are synthesized, and DNA is replicated.

This phase is also known as the interphase or the growth phase.

Explanation

Deductive reasoning is a type of logical reasoning that uses "if-then" statements to arrive at a conclusion.

It involves making a logical deduction based on a premise.

It is used in scientific reasoning to test hypotheses and predict outcomes.

Explanation

The scientific method is a systematic approach used to develop and test scientific knowledge, including in biology and other sciences. It involves:

• Observations
• Hypothesis formation
• Prediction
• Experimentation
• Data analysis
• Conclusion drawing

Explanation

The gravitational force between two masses is mutual; each mass exerts an equal and opposite force on the other,.

It aligns with Newton's 3rd law of motion: for every action, there is an equal and opposite reaction.

Explanation

To find the pressure, you need to divide the force (20 N) by the area (5 cm^2).

Since 1 cm^2 = 0.0001 m^2, the area in square meters is:

5 cm^2 x (0.0001 m^2/cm^2) = 0.0005 m^2

Now, you can calculate the pressure:

Pressure = Force / Area = 20 N / 0.0005 m^2 = 40,000 N/m^2

Since 1 N/m^2 = 1 Pascal (Pa), you can convert the pressure to N/cm^2:

40,000 N/m^2 x (1 m^2 / 100 cm^2) = 4 N/cm^2

Explanation

The equivalent weight of an element is the mass of the element that reacts with one mole of electrons (or one mole of hydrogen atoms).

For aluminum (Al), the equivalent weight is 9 g.

Atomic weight of Al = 27 g/mol

Valency of Al = 3 (since Al forms Al3+ ions)

Equivalent weight = Atomic weight / Valency

= 27 g/mol / 3

= 9 g

So, 1 g equivalent weight of Al is 9 g!

Explanation

• The empirical formula of hydrogen peroxide (H2O2) is HO.
• The empirical formula is the simplest whole-number ratio of atoms of each element in a compound.
• In this case, the ratio of hydrogen to oxygen is 1:1, which is represented by the formula HO.