Tag: bio-chemistry

Quizzes (82) Questions (1918)

Questions Related to bio-chemistry

Multiple choice bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

Which of these is a part of your digestive system? 

  1. Stomach

  2. Pancreas

  3. Rectum

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of these choices are a part of your digestive system. Your digestive system has many other associated organs including the small intestine, large intestine, and liver. The stomach is an area of food digestion. The pancreas releases hormones that affect the digestive process. The rectum is the last place you store you food before the process of elimination (pooping).

Multiple choice bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

Choose the correct answers from the alternatives given.
In Paramecium, the phenomenon of cyclosis is associated with

  1. digestion

  2. excretion

  3. locomotion

  4. reproduction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cyclosis is the movement in the fluid in the cytoplasm where the proteins and nutrient in the cytoplasm get digested.

So, the correct option is 'digestion'.

Multiple choice bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion

Plant seed oil is obtained from

  1. Saccharum munja

  2. Arachis hypogea

  3. Cicer areitinum

  4. Saccharum officinarum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The seeds of Arachis hypogea (family-Papileonaceae) contain 40-50% oil contents. On. hydrogenation it yields vegetable ghee. It is very important non-drying oil used for cooking and also as illuminant and lubricant in soap industry.

So the correct option is B.

Multiple choice bio-chemistry cell membrane regulation of respiration transport of respiratory gases buffer and its role

Forced deep breathing for a few minutes by a person sitting at rest may be
followed by a temporary cessation of breathing. This is due to

  1. Too much $O _2$ in the blood
  2. Too much $CO _2$ in the blood
  3. Very little $CO _2$ in the blood
  4. Both too much $O _2$ and very little $CO _2$ in the blood
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Deep breathing rises the $O _2$ level of the blood. By excess formation of oxyhaemoglobin the acidity of blood increases. To control it, more of free $CO _2$ changes into bicarbonates and the free $CO _2$ level in the blood decreases. So due to lack of stimulant for inspiratory centre cessation of breathing takes place, after some time $O _2$ is consumed by the tissues and rise in $CO _2$ stimulates breathing again. So, the correct answer is 'Both too much O$ _2$ and very little CO$ _2$ in the blood'.

Multiple choice bio-chemistry cell membrane regulation of respiration transport of respiratory gases buffer and its role

When carbon dioxide concentration in blood increases, breathing becomes ............ and ...........

  1. Shallower and slow

  2. Slow and deep

  3. Faster and deeper

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When the concentration of carbon dioxide increases in blood that results in decreasing the affinity of hemoglobin towards oxygen or amount of oxygen is less in blood. To compensate the oxygen amount breathing goes faster and deeper and is known as hyperventilation which is controlled by the medullary respiratory center.

So the correct option is 'Faster and deeper'.

Multiple choice bio-chemistry cell membrane regulation of respiration transport of respiratory gases buffer and its role

Pneumotaxis and inhibitory centers are associated with _______________.

  1. breathing

  2. respiration

  3. digestion

  4. sleeping
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Regulation of Respiration is done by the nervous mechanism.
  • A specialised centre present in the medulla region of the brain called the respiratory rhythm centre is primarily responsible for this regulation.
  • Another centre is present in the Pons region in the brain called pneumotaxis centre can moderate the function of Respiratory Rhythm Centre.
Hence, the correct answer is 'Breathing'

Multiple choice bio-chemistry cell membrane regulation of respiration transport of respiratory gases buffer and its role

Respiratory rhythm centre is present:-

  1. Cerebrum

  2. Cerebellum

  3. Medulla

  4. Pons
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation
  • The respiratory center is located in the medulla oblongata and pons, in the brainstem.
  • The respiratory center is made up of three major respiratory groups of neurons, two in the medulla and one in the pons. It is responsible for generating and maintaining the rhythm of respiration.
  • Hence Respiratory rhythm center is present Medulla and pons.
  • So, the correct answer is 'Medulla and Pons.