Beauty Therapist - Qp2

Explanation
This statement is true because a cell is indeed a small mass of protoplasm that contains a nucleus. Protoplasm is the living substance within a cell that includes various organelles and is responsible for carrying out the cell's functions. The nucleus, on the other hand, is the control center of the cell that contains the genetic material and regulates cell activities. Therefore, a cell can be accurately described as a small mass of protoplasm containing a nucleus.

Explanation
Cells are capable of absorbing nourishment, which is essential for their survival and functioning. They also have the ability to grow and repair themselves, allowing them to adapt to changes in their environment and maintain their structure and function. Additionally, some cells, such as muscle cells and certain types of immune cells, have the power of movement, enabling them to perform their specialized functions within the body.

Explanation
Mitosis is the correct answer because it refers to the process of cell division in which a single cell divides into two identical daughter cells. During mitosis, the cell's DNA is replicated and distributed equally between the daughter cells, ensuring genetic continuity. This process is essential for growth, development, and repair of tissues in multicellular organisms. Diffusion, filtration, and osmosis are not related to cell division and have different biological functions.

Explanation
This statement is false because a tissue is not a collection of different cells subject to the same laws of growth and development. A tissue is actually a group of similar cells that work together to perform a specific function in the body. Each type of tissue has its own unique characteristics and functions, and they are not necessarily subject to the same laws of growth and development.

Explanation
The main types of connective tissue are adipose, bone, and fibrous. Adipose tissue is responsible for storing fat and providing insulation and cushioning. Bone tissue provides support and protection to the body, as well as serving as a site for blood cell production. Fibrous tissue, such as tendons and ligaments, connects and supports different parts of the body. Muscular tissue, although important in the body, is not considered a type of connective tissue as it has a different function of generating force and movement.

Explanation
The skin makes up about 7% of total body weight and receives about one third of the fresh blood pumped from the heart. This is because the skin is the largest organ in the body and plays a crucial role in regulating body temperature, protecting the body from external factors, and eliminating waste through sweat. The extensive network of blood vessels in the skin helps in maintaining proper blood flow and delivering oxygen and nutrients to the skin cells.

Explanation
The statement is true because our skin and hair can provide valuable information about our overall health. Changes in skin color, texture, or appearance can indicate underlying health issues such as inflammation, allergies, or hormonal imbalances. Similarly, the condition of our hair can reflect our nutritional status, stress levels, and certain medical conditions. Therefore, paying attention to the health and appearance of our skin and hair can help us identify and address potential health concerns.

Explanation
The main part of the sweat gland is not situated in the epidermis. Sweat glands are actually located in the dermis, which is the layer of skin beneath the epidermis. The sweat glands produce and secrete sweat through ducts that extend through the epidermis and onto the surface of the skin. Therefore, the statement is false.

Explanation
Hyperkeratosis is a condition characterized by the thickening of the outer layer of the skin, not deep cracks. Therefore, the statement that hyperkeratosis is a deep crack in the skin which is slow to heal is false.