Explanation

The periodic table divided into S, P, d, and f block based on Electronic Configuration.

• S block: The s block includes the first two columns of the periodic table, which are the alkali and alkaline earth metals.
• P block: The p block includes the elements in the six columns on the right side of the periodic table.
• D block: The d block includes the elements in the ten columns in the middle of the periodic table. These are also known as the transition metals.
• F block: The f block includes the elements at the bottom of the periodic table, which are known as the inner transition metals or lanthanides and actinides.

Explanation

The pharynx (throat) is a shared passage for both the respiratory and digestive systems.

The trachea (windpipe) and esophagus both connect to the pharynx:

• The trachea connects to the pharynx anteriorly (front) and leads to the lungs.
• The esophagus connects to the pharynx posteriorly (back) and leads to the stomach.

Explanation

• Diamond is a crystalline solid that has a sharp melting point.
• Meaning it melts at a specific temperature (around 4000 K) with a minimal range.

Explanation

• Gram atomic mass (GAM) is the atomic mass of an element expressed in grams.
• It represents the mass of one mole of atoms of that element.

Explanation

Most protists are aquatic, meaning they live in water environments, such as oceans, rivers, lakes, and wetlands.

Many protists are single-celled and microscopic, while others are multicellular and macroscopic.

Explanation

• The high resolution of the electron microscope is primarily due to the short wavelength of the electron beam.
• This shorter wavelength allows for higher resolution and the ability to visualize smaller structures.

Explanation

Homologous pairs are chromosomes that are similar in shape, size, and genetic content, and contain the same genes in the same order.

They are pairs of chromosomes that are inherited one from each parent.

They are responsible for determining the traits and characteristics of an organism.

Explanation

Evaporation is the process by which molecules escape from the surface of a liquid to become vapor, even if the liquid is below its boiling point.

This occurs when some molecules have enough energy to break free from the surface tension of the liquid and turn into vapor.

Key Points:

• Boiling occurs when a liquid is heated to its boiling point, causing bubbles to form and rise to the surface.
• Condensation is the process by which vapor is converted back into a liquid.
• Convection is the transfer of heat through the movement of fluids.

Explanation

Carbon dioxide (CO2) reacts with calcium hydroxide (Ca(OH)2.

It is also known as lime water to form a white precipitate of calcium carbonate (CaCO3), which turns the solution milky:

Ca(OH)2 + CO2 → CaCO3 + H2O

This reaction is often used as a test for carbon dioxide.

Explanation

Diastole is the phase of the cardiac cycle where the heart muscle relaxes.

It allowing the chambers to fill with blood.