Explanation

Explanation

Alveoli:

Bronchioles terminate in tiny air sacs called alveoli.

These are the primary sites for gas exchange in the lungs. 

Alveolar sac:

Alveoli are clustered together to form alveolar sacs.

These sacs are the functional units of the lung where oxygen and carbon dioxide exchange occurs. 

Explanation

The bacteria that cause tuberculosis and leprosy are Mycobacterium tuberculosis and Mycobacterium leprae.

So the correct answer is d) None of these

Explanation

 Hepatitis A is primarily spread through contaminated food or water that has been in contact with infected feces, meaning it's transmitted through the fecal-oral route. 

Explanation

- A voltmeter measures the potential difference (voltage) between two points in a circuit.  

- It is always connected in parallel to the component.  

- The SI unit of potential difference is the Volt (V).  

- Potential difference is the work done per unit charge to move a charge between two points.  

  - Formula: V = W / Q  

    - V = potential difference (volts)  

    - W = work done (joules)  

    - Q = charge (coulombs)  

- A voltmeter has high resistance so it doesn't draw current from the circuit.

Explanation

Mycoplasma is a type of bacteria, not a virus.

It lacks a cell wall, which makes it resistant to certain antibiotics.

Bacteria are capable of independent replication, unlike viruses which need a host cell. 

SARS, FIV, and HIV are all viruses:

SARS stands for Severe Acute Respiratory Syndrome,

FIV for Feline Immunodeficiency Virus,

HIV for Human Immunodeficiency Virus.

These are all viruses that infect specific hosts and require a host cell to replicate their genetic material. 

Explanation

 Tobacco mosaic virus (TMV) has a rod-like or cylindrical shape.

It's essentially a rigid, helical structure with a protein shell (capsid) surrounding a single-stranded RNA molecule

The capsid is composed of protein subunits arranged in a helical structure. 

Explanation

Explanation

Most coenzymes are actually vitamins or derived from vitamins, meaning they are essential organic compounds needed in small amounts for normal metabolism

Explanation

An enzyme without its cofactor is called an apoenzyme.

Apoenzymes are the inactive protein component of an enzyme, requiring a cofactor to become catalytically active and form a holoenzyme.