Miscellaneous (Biology) Part-II

Total Questions: 50

11. BMD test is held for diagnosis of – [U.P.P.C.S. (Pre) 2011]

Correct Answer: (c) Osteoporosis
Solution:

The full form of BMD is Bone Mineral Density. It leads to an X-ray test that determines the density, e.g., mineral density in your bones. It indicates how many grams (g) per unit volume of your bone is packaged with calcium & other minerals.

This examination shows the strength & health of your bones. Typically, the test is performed on people at risk of mild bone loss and severe bone loss.

It is a non-invasive, painless procedure that needs no prescription. It requires low radiation exposure, and throughout the test, you are supposed to lie on a table or bench. There seem to be two kinds of scans for bone density.

Central DXA: In this type of scan, the torso's hip, spine, or other bones are scanned by an X-ray machine.

Peripheral DXA: In this type of scan, the forearm, finger, wrist, or heel bones are scanned by an X-ray machine.

The BMD test is performed to identify the

  • Loss of bone density before you have a bone fracture.
  • Diagnosis of Osteoporosis (Severe bone loss).
  • The control of osteoporosis treatment

12. BMD test is performed for – [U.P.P.C.S. (Mains) 2014]

Correct Answer: (b) Osteoporosis
Solution:

The full form of BMD is Bone Mineral Density. It leads to an X-ray test that determines the density, e.g., mineral density in your bones. It indicates how many grams (g) per unit volume of your bone is packaged with calcium & other minerals.

This examination shows the strength & health of your bones. Typically, the test is performed on people at risk of mild bone loss and severe bone loss.

It is a non-invasive, painless procedure that needs no prescription. It requires low radiation exposure, and throughout the test, you are supposed to lie on a table or bench. There seem to be two kinds of scans for bone density.

Central DXA: In this type of scan, the torso's hip, spine, or other bones are scanned by an X-ray machine.

Peripheral DXA: In this type of scan, the forearm, finger, wrist, or heel bones are scanned by an X-ray machine.

The BMD test is performed to identify the

  • Loss of bone density before you have a bone fracture.
  • Diagnosis of Osteoporosis (Severe bone loss).
  • The control of osteoporosis treatment

13. What is the full form of BMD test? [U.P.P.C.S. (Mains) 2015]

Correct Answer: (b) Bone Mineral Density
Solution:

The full form of BMD is Bone Mineral Density. It leads to an X-ray test that determines the density, e.g., mineral density in your bones. It indicates how many grams (g) per unit volume of your bone is packaged with calcium & other minerals.

This examination shows the strength & health of your bones. Typically, the test is performed on people at risk of mild bone loss and severe bone loss.

It is a non-invasive, painless procedure that needs no prescription. It requires low radiation exposure, and throughout the test, you are supposed to lie on a table or bench. There seem to be two kinds of scans for bone density.

Central DXA: In this type of scan, the torso's hip, spine, or other bones are scanned by an X-ray machine.

Peripheral DXA: In this type of scan, the forearm, finger, wrist, or heel bones are scanned by an X-ray machine.

The BMD test is performed to identify the

  • Loss of bone density before you have a bone fracture.
  • Diagnosis of Osteoporosis (Severe bone loss).
  • The control of osteoporosis treatment

14. What is lithotripsy? [M.P.P.C.S. (Pre) 2010]

Correct Answer: (b) Breaking of kidney stone through rays
Solution:Lithotripsy is a noninvasive (the skin is not pierced) procedure used to treat kidney stones that are too large to pass through the urinary tract. Lithotripsy treats kidney stones by sending focused ultrasonic energy or shock waves directly to the stone first located with fluoroscopy (a type of X-ray "movie") or ultrasound (high frequency sound waves).

The shock waves break a large stone into smaller stones that will pass through the urinary system. Lithotripsy allows persons with certain types of stones in the urinary system to avoid an invasive surgical procedure for stone removal. In order to aim the waves, your doctor must be able to see the stones under X-ray or ultrasound.

Lithotripsy involves the administration of a series of shock waves to the targeted stone. The shock waves, which are generated by a machine called a lithotripter, are focused by x-ray onto the kidney stone.

The shock waves travel into the body, through skin and tissue, reaching the stone where they break it into small fragments. For several weeks following treatment, those small fragments are passed out of the body in the urine.

Kidney stones: When substances that are normally excreted through the kidneys remain in the urinary tract, they may crystallize and harden into a kidney stone. If the stones break free of the kidney, they can travel through, and get lodged in, the narrower passages of the urinary tract.

Some kidney stones are small or smooth enough to pass easily through the urinary tract without discomfort. Other stones may have rough edges or grow as large as a pea causing extreme pain as they travel through or become lodged in the urinary tract. The areas most prone to trapping kidney stones are the bladder, ureters, and urethra.

15. Electron beam therapy is a kind of radiation therapy in treat – [U.P.P.C.S. (Spl.) (Mains) 2008]

Correct Answer: (c) Certain type of cancer
Solution:Electron beam therapy is a type of radiation that is used to treat very shallow (superficial) tumors. It is different than other types of radiation that treat deeper in the body using photons or protons.

Electron beam therapy is given using a machine called a linear accelerator and can be found at most radiation treatment centers. The electron beam is shaped for treatment using a custom block made of a metal-like material.

Electrons tend to release (let go of) their energy close to the skin's surface and are often used to treat tumors close to the surface of the skin. Some examples are:

  • Skin tumors.
  • Keloids.
  • Some lymph nodes.
  • Lumpectomy scars after breast surgery.

Since electrons release most of their energy near the skin, the dose of radiation to deeper tissues is minimal.

There are two ways electron beam radiation therapy can be given:

  • Spot treatment. It can be used to treat tumors on the surface of the skin or keloids. It can be used when a single or multiple spots on your body are treated instead of the whole surface of your skin.
  • Total skin electron beam therapy (TSEBT). TSEBT is when the whole surface of your skin is treated. It is used to treat cutaneous T-cell lymphoma (CTCL) and/or mycosis fungoides (MF), a type of lymphoma that affects the skin.

16. When doctor tells a person that he/she has been affected with tetraplegia, it means that he/she is suffering from paralysis of – [U.P.P.C.S. (Pre) (Re. Exam) 2015]

Correct Answer: (d) Both hands and both legs
Solution:

Tetraplegia may be better known as quadriplegia, a condition in which the arms and legs are paralyzed. The condition is usually the result of an injury, rather than an illness or a congenital condition.

A related condition to tetraplegia, called paraplegia, refers to the paralysis of just your legs and lower body. There is currently no cure for tetraplegia. Tetraplegia can happen due to the following types of injuries: brain, cervical, spinal cord.

According to the International Classification of Functioning, Disability, and Health (ICF), injury to one or more of the C-1 through C-8 vertebrae, in particular, can cause paralysis of your legs and feet, as well as your arms and hands.

In some cases, there may be partial paralysis of one or more limbs. Injury of the lumbar region of your spine is associated with paralysis of your lower body and legs.

17. In living beings, nutrition, respiration and synthesis are the three major aspects of – [Uttarakhand P.C.S. (Mains) 2002]

Correct Answer: (b) Metabolism
Solution:Nutrition, respiration and synthesis are the three major aspects of metabolism. Metabolism is a term that is used to describe all chemical reactions involved in maintaining the living state of the cells and the organism.

Metabolism can be conveniently divided into two categories: (1) Catabolism-the breakdown of molecules to obtain energy. (II) Anabolism-the synthesis of all compounds needed by the cells.

18. Another name of artificial silk is – [Jharkhand P.C.S. (Pre) 2010]

Correct Answer: (a) Rayon
Solution:

Artificial silk is a synthetic fibre which is also known as rayon. Rayon is a manufactured fibre made from natural sources such as wood and agricultural products that are regenerated as cellulose fibre.

Rayon is a semi-synthetic fiber, also known as artificial silk, made from regenerated cellulose, primarily obtained from wood pulp. It is a versatile fiber with properties similar to silk and is cheaper to produce. Rayon is widely used in textiles and other applications.

Rayon is derived from natural sources like wood pulp or cotton linters, but it undergoes chemical treatment to be transformed into a synthetic fiber. Rayon has a soft, smooth texture, a good drape, and is breathable, making it comfortable to wear.

Rayon is used in a wide range of applications, including clothing, upholstery, carpets, and industrial materials. Different types of rayon, such as viscose, lyocell, and modal, are produced through varying manufacturing processes, resulting in slightly different properties,

19. Which of the following pairs is NOT correctly matched? [U.P.P.C.S. (Pre) 2019, U.P.P.C.S. (Pre) 2022]

Correct Answer: (d) Rayon — Modified starch
Solution:

Rayon is a manufactured fiber made from natural sources such as wood and agricultural products that are regenerated as cellulose fiber. It is not modified starch. Pairs of other options are correctly matched.

Rayon is a semi-synthetic fiber, also known as artificial silk, made from regenerated cellulose, primarily obtained from wood pulp. It is a versatile fiber with properties similar to silk and is cheaper to produce. Rayon is widely used in textiles and other applications.

Rayon is derived from natural sources like wood pulp or cotton linters, but it undergoes chemical treatment to be transformed into a synthetic fiber. Rayon has a soft, smooth texture, a good drape, and is breathable, making it comfortable to wear.

Rayon is used in a wide range of applications, including clothing, upholstery, carpets, and industrial materials. Different types of rayon, such as viscose, lyocell, and modal, are produced through varying manufacturing processes, resulting in slightly different properties,

20. Which one of the following pairs is not correctly matched? [U.P.P.C.S. (Pre) 2015, U.P. P.C.S. (Pre) 2022]

Correct Answer: (b) Rayon — Modified starch
Solution:

Rayon is derived from regenerated cellulose fibre. Other pairs are correctly matched. Rayon is a semi-synthetic fiber, also known as artificial silk, made from regenerated cellulose, primarily obtained from wood pulp.

It is a versatile fiber with properties similar to silk and is cheaper to produce. Rayon is widely used in textiles and other applications.

Rayon is derived from natural sources like wood pulp or cotton linters, but it undergoes chemical treatment to be transformed into a synthetic fiber. Rayon has a soft, smooth texture, a good drape, and is breathable, making it comfortable to wear.

Rayon is used in a wide range of applications, including clothing, upholstery, carpets, and industrial materials. Different types of rayon, such as viscose, lyocell, and modal, are produced through varying manufacturing processes, resulting in slightly different properties,