Explanation

 p24:

This protein is part of the Gag protein complex, which is responsible for forming the viral core.

The matrix is the layer surrounding the viral core, and p24 is the primary structural component of this matrix. 

gp120 and gp41:

These are glycoproteins on the surface of the HIV envelope.

They are involved in viral attachment to and entry into host cells, but not the formation of the matrix. 

Explanation

 The sex of a baby is determined by the sperm that fertilizes the egg.

If the sperm carries a Y chromosome, the baby will be a son.

If the sperm carries an X chromosome, the baby will be a daughter.

Since the chances of receiving a Y or an X chromosome are roughly equal, the probability of having a son or a daughter is approximately 50/50, or 1:1. 

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

 Cysteine is the only amino acid with a sulfhydryl group (-SH), which allows it to form disulfide bonds with another cysteine residue, creating a linkage between two polypeptide chains.

In insulin, disulfide bonds are crucial for maintaining its proper structure and function. 

Explanation

The organelle responsible for the breakdown of fatty acids and detoxification of alcohol in the liver is Peroxisome. 

Peroxisomes are small organelles that contain enzymes capable of breaking down fatty acids and detoxifying harmful substances like alcohol. 

Explanation

Vitamin B Complex deficiency, specifically Vitamin B1 (Thiamine) deficiency, can cause:

Beriberi, a disease characterized by:

• Fatigue and weakness
• Nerve damage and pain
• Heart problems
• Swelling of legs and feet

Explanation

If bleeding starts from a wound, you should apply direct pressure to the wound using a clean cloth or gauze pad until the bleeding stops, and then use a roller bandage to hold the dressing in place and maintain pressure on the wound

Explanation

If you don't wash your body regularly, you can experience unpleasant body odor,

• increased risk of skin infections,
• clogged pores,
• acne flare-ups,
• irritation,
• a build-up of dirt, sweat, and dead skin cells

It can also lead to a condition called "dermatitis neglecta" in extreme cases,

Explanation

The P wave and PR segment is an integral part of an electrocardiogram (ECG).

It represents the electrical depolarization of the atria of the heart.

Typically, a small positive deflection from the isoelectric baseline occurs just before the QRS complex.

Explanation

Food chains are linear sequences showing the feeding relationships between organisms in an ecosystem.

They illustrate how energy and nutrients are passed from one organism to another, from producers (like plants) to consumers (like animals).