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Q. How is digestion performed in protozoans?
Digestion in protozoans is intracellular digestion organic material degraded inside the cell and is internalized.
Protozoans get food by phagocytosis and then the food is digested when phagosomes fuse with lisosomes within the cell, forming digestive vacuoles. The digestive vacuoles give basis to residual bodies that are eliminated from the cell by exocytosis.
In the paramecium the entrance of food into the cell and the excretion of digestive residuals occur at specialized regions of the plasma membrane, the cytopyge and the cytostom, respectively.
Is there a respiratory pigment in the annelid blood? The blood in beings of the phylum Annelida have the respiratory pigment hemoglobin (the similar found in chordates) and oth
To "express" a gene is to make it to function properly. A gene which encodes a protein will, when expressed, be transcribed or translated to produce that particular protein. A gene
Define Objectives to know about methods of food processing? After studying this unit, you will be able to: Enumerate the different methods of food processing Enlist
Explain the Occurrence of vitamin B 2 Vitamin B 2 (riboflavin) occurs in nature almost exclusively in a combined form i.e. esterified with phosphoric acid as riboflavin-5'-ph
The doctor ordered 3 teaspoons of Basaljel suspension in water or juice. How many cc of Basaljel (aluminum carbonate) should the nurse place in the medicine cup?
In this section you will be introduced to a variant of Darwinian concept of natural selection which he termed sexual selection. You may have observed very distinct and striking dif
What is the root pressure? The Root pressure is the pressure that forces water from the soil to be absorbed by xylem of the root. It is because of the osmotic gradient between
Class of Crustacea - Copepoda Copepoda is a huge class of small (1-5mm) crustaceans occupying both marine and freshwater environments. Copepods form the several abundant and c
How does the presence of exoskeleton explain the general small size of arthropods? As they have exoskeleton and periodic ecdysis, the growth of arthropods is limited to avoid t
Q. How is the cerebrum anatomically divided? The cerebrum is divided into two cerebral hemispheres, the left and the right. Each hemisphere is made of four cerebral lobes: pari
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