Tag: bio-chemistry

Quizzes (82) Questions (1918)

Questions Related to bio-chemistry

Multiple choice bio-chemistry unit of living - cell eukaryotic cell kinds of cell introduction to eukaryotic cell


9 + 2 fibrillar arrangement is present in:

  1. Bacterial flagella

  2. Bacterial fimbriae

  3. Eukaryotic flagella

  4. T4 bacteriophage
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The 9+2 microtubule arrangement (9 outer doublets + 2 central singlet microtubules) is characteristic of eukaryotic flagella and cilia. Bacterial flagella use a different structure (filament + hook + basal body), and fimbriae are protein filaments without this arrangement.

Multiple choice bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

Schneiderian membrane is found in

  1. loop of Henle

  2. trachea

  3. Bowman's capsule

  4. nasal mucosa
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
In anatomy, the Schneiderian membrane is  the membranous lining of the maxillary sinus cavity. The part is exposed after surgical removal of membranous layer of mucosal cavity.

So, the correct option is D. 
Multiple choice bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

What is the process of food passage from buccal cavity to the side of water and mineral absorption?

  1. Mouth $\rightarrow$ Buccal cavity $\rightarrow$ Pharynx $\rightarrow$ Oesophagus $\rightarrow$ Duodenum $\rightarrow$Stomach $\rightarrow$ Ileum $\rightarrow$ large intestine
  2. Mouth $\rightarrow$ Buccal cavity $\rightarrow$ Pharynx $\rightarrow$ Oesophagus $\rightarrow$ Stomach $\rightarrow$Duodenum $\rightarrow$ Ileum $\rightarrow$ Caecum $\rightarrow$Rectum
  3. Mouth $\rightarrow$Buccal cavity $\rightarrow$ pharynx $\rightarrow$ Larynx $\rightarrow$ Stomach $\rightarrow$ Small intestine $\rightarrow$Large intestine
  4. Mouth $\rightarrow$ Buccal cavity $\rightarrow$ Pharynx $\rightarrow$ Food $\rightarrow$ pipe $\rightarrow$ Stomach
    $\rightarrow$ Large intestine $\rightarrow$ Small intestine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The correct anatomical sequence for the digestive tract is Mouth, Buccal cavity, Pharynx, Oesophagus, Stomach, Small intestine (Duodenum, Jejunum, Ileum), and Large intestine.

Multiple choice bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

Tongue is made up of?

  1. Smooth muscles

  2. Skeletal muscles

  3. Both (A) and (B)

  4. Cartilage
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Answer : 
i) The tongue is composed of skeletal muscle fibers and smooth muscle fibers. 
ii) Unlike the cardiac muscle or smooth muscle of the organs and digestive system, skeletal muscle can be willingly controlled. 
iii) This allows for the tongue's mobility. 
iv) The muscles that lace throughout the organ secure it to surrounding bones and create the floor of the oral cavity. 
v) Mucous membrane covers the skeletal muscle and protects the body from microbes and pathogens.
vi) While muscularis mucosa is composed of a layer of smooth muscle fibers.

So the correct answer is option C. Both (A) and (B).
Multiple choice bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

The literal meaning of "gastrulation" is 

  1. Formation of primary germ layers

  2. Formation of a gut

  3. Morphogenetic movement

  4. Commencement of organogenesis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

'Gastrulation' word is derived from Greek word 'gaster' meaning stomach and according to McEwen (1923), gastrulation refers to the formation of the primordial gastric gut or cavity called the archenteron.

Multiple choice bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

Which ones are absorbed in the alimentary canal without any breakdown?

  1. Proteins

  2. Polysaccharides

  3. Fat soluble vitamins

  4. Albumen of egg
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fat-soluble vitamins (A, D, E, K) are absorbed directly into the bloodstream or lymphatic system without needing chemical breakdown by digestive enzymes.