Tag: biology

Questions Related to biology

Antibodies made outside the body by hybrid cell cultures are known as

biology immunity monoclonal antibodies antibody production and vaccination biotechnology

  1. Biotechnological antibodies

  2. Specific antibodies

  3. Hybrid antibodies

  4. Monoclonal antibodies

Show answer
Correct Option: D
Explanation:

Monoclonal antibodies are antibodies that are made by identical immune cells that are all clones of a unique parent cell. Monoclonal antibodies can have monovalent affinity, in that they bind to the same epitope (the part of an antigen that is recognized by the antibody). In contrast, polyclonal antibodies bind to multiple epitopes and are usually made by several different plasma cell (antibody secreting immune cell) lineages. Bispecific monoclonal antibodies can also be engineered, by increasing the therapeutic targets of one single monoclonal antibody to two epitopes. Given almost any substance, it is possible to produce monoclonal antibodies that specifically bind to that substance; they can then serve to detect or purify that substance. This has become an important tool in biochemistry, molecular biology, and medicine. 

So the correct option is 'monoclonal antibodies'.

Choose the correct answers from the alternatives given.
Monoclonal antibodies are

biology immunity monoclonal antibodies antibody production and vaccination biotechnology

  1. produced by clones formed from memory cells

  2. used to produce large quantities of interferon

  3. produced by cultures of hybridoma cells

  4. produced by clones of 1-cells fused with tumor cells

Show answer
Correct Option: C
Explanation:

Monoclonal antibodies are the antibodies that are made by identical immune cells that are all clones of a unique parent cell. In contrast, polyclonal antibodies bind to multiple epitopes and are usually made by several different plasma cells.

So, the correct option is 'Produced by cultures of hybridoma cells'.

Homeostasis is the process which regulates

temperature control homeostasis coordination and response biology

  1. Formation of food

  2. External environment

  3. Metabolism regulation

  4. Internal environment

Show answer
Correct Option: D
Explanation:

Homeostasis is the ability of an open system to regulate its internal environment to maintain stable conditions by means of multiple dynamic equilibrium adjustments controlled by interrelated regulation mechanisms. All living organisms, whether unicellular or multicellular exhibit homeostasis. Therefore, the correct answer is option D.

The normal temperature of human body on the Kelvin scale is

temperature control homeostasis coordination and response biology

  1. 280

  2. 290

  3. 300

  4. 310

Show answer
Correct Option: D
Explanation:

Normal body temperature is 37 degree Celsius. To convert from Celsius to Kelvin add 273. So 37 + 273 = 310 degrees Kelvin.

Therefore, the correct answer is option D.

Human temperature is set at

temperature control homeostasis coordination and response biology

  1. $47.5^0$C

  2. $37^0$C

  3. $37^0$F

  4. $98.4^0$C

Show answer
Correct Option: B
Explanation:
  • In humans, the average internal temperature is 37.0 °C (98.6 °F).
  • Hypothermia is a medical emergency that occurs when your body loses heat faster than it can produce heat, causing a dangerously low body temperature.
  • Hypothermia occurs as your body temperature falls below 35.0 °C.
  • Hence Human temperature is set at 37.0 °C.
  • So, the correct answer is '37.0 °C'.

Mechanism for cooling of human body is

temperature control homeostasis coordination and response biology

  1. Sweating

  2. Crying

  3. Laughing

  4. None of the above

Show answer
Correct Option: A
Explanation:
  • Sweating from sweat glands, often in response to heat, exercise or stress.
  • Sweating is also called as Perspiration. is the production of fluids secreted by the sweat glands in the skin of mammals. 
  • In humans, sweating is primarily a means of thermoregulation, which is achieved by the water-rich secretion of the eccrine glands. 
  •  Evaporation of sweat from the skin surface has a cooling effect due to evaporative cooling. Hence, Mechanism for cooling of the human body is Sweating. 
 So, the correct answer is 'Sweating'.

Which of the following is not a type of tactile sensation

temperature control homeostasis coordination and response biology

  1. Heat

  2. Touch

  3. Vibration

  4. Pressure

Show answer
Correct Option: A
Explanation:

Tactile sensations are produced by the pressure receptors in the skin. The tactual sensation is related to touch.


So, the correct option is 'heat'.

The average temperature of human body is

temperature control homeostasis coordination and response biology

  1. 30.5$^oC$

  2. 36.9$^oC$

  3. 98.6$^oF$

  4. 97.4$^oC$

Show answer
Correct Option: C

The normal temperature of human body on the Kelvin scale is ............ K

temperature control homeostasis coordination and response biology

  1. 280

  2. 290

  3. 300

  4. 310

Show answer
Correct Option: D
Explanation:

Kelvin is the unit of measurement of temperature on an absolute scale. Kelvin temperature scale has an absolute zero below which temperatures do not exist. Absolute zero, is the temperature corresponds to a temperature of - 273.15° on the Celsius scale.The normal temperature of human body is 36.85$^0 $C.   

Temperature in kelvin = temperature in celsius + 273.15
Temperature in kelvin = 36.85 + 273.15 = 310 K.
Thus, the correct answer is option D.

Which one is correctly matched ?

temperature control homeostasis coordination and response biology

  1. Tears - Excretion of salts

  2. Sweat - Thermoregulation

  3. Saliva - Testing food

  4. Satoish - Sexual attraction

Show answer
Correct Option: B
Explanation:
  • Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different.
  • When the body becomes hotter than the normal temperature the sweat glands releases sweat which in turns cools the skin as it evaporates. This helps the lower internal temperature of the body.
  • So, the correct answer is 'Sweat-Thermoregulation'.