Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology immunity monoclonal antibodies antibody production and vaccination biotechnology

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

  1. Biotechnological antibodies

  2. Specific antibodies

  3. Hybrid antibodies

  4. Monoclonal antibodies
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.

Multiple choice biology immunity monoclonal antibodies antibody production and vaccination biotechnology

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

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

Multiple choice temperature control homeostasis coordination and response biology

Homeostasis is the process which regulates

  1. Formation of food

  2. External environment

  3. Metabolism regulation

  4. Internal environment
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice temperature control homeostasis coordination and response biology

The normal temperature of human body on the Kelvin scale is

  1. 280

  2. 290

  3. 300

  4. 310
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice temperature control homeostasis coordination and response biology

Human temperature is set at

  1. $47.5^0$C
  2. $37^0$C
  3. $37^0$F
  4. $98.4^0$C
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice temperature control homeostasis coordination and response biology

Mechanism for cooling of human body is

  1. Sweating

  2. Crying

  3. Laughing

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.
Multiple choice temperature control homeostasis coordination and response biology

Which of the following is not a type of tactile sensation

  1. Heat

  2. Touch

  3. Vibration

  4. Pressure
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

Multiple choice temperature control homeostasis coordination and response biology

The average temperature of human body is

  1. 30.5$^oC$
  2. 36.9$^oC$
  3. 98.6$^oF$
  4. 97.4$^oC$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The average human body temperature is approximately 98.6 degrees Fahrenheit, which is equivalent to 37 degrees Celsius. Option C is the standard accepted value.

Multiple choice temperature control homeostasis coordination and response biology

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

  1. 280

  2. 290

  3. 300

  4. 310
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice temperature control homeostasis coordination and response biology

Which one is correctly matched ?

  1. Tears - Excretion of salts

  2. Sweat - Thermoregulation

  3. Saliva - Testing food

  4. Satoish - Sexual attraction
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.