Explanation

The statement correct for all viruses but not for all bacteria and fungi is They have a Nucleus Containing DNA or RNA.

Viruses:

Viruses are obligate intracellular parasites, meaning they lack a nucleus and replicate inside the host cell's nucleus.

They have genetic material (DNA or RNA) but not housed within a nucleus. 

Bacteria and Fungi:

Bacteria and fungi are cells, and while some bacteria are prokaryotic (lacking a nucleus), they still have their own DNA or RNA contained within a nucleus-like structure.

Some fungi have a cell wall made of cellulose, but not all. 

Explanation

Testosterone, estrogen, and progesterone are derived from cholesterol, making them steroid hormones.

They are lipid-soluble, diffuse through membranes, and regulate reproduction.

Explanation

The type of nerve impulse in a non-myelinated neuron is continuous. 

In unmyelinated neurons, the action potential travels along the entire axon membrane, requiring continuous depolarization and repolarization.

Whereas in myelinated neurons, the action potential "jumps" from node to node (saltatory conduction), which is much faster. 

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

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