Tiêu đề 1-Cell structure and Function (Revision Test) - Engeecon Academy 2.0.pdf ✅

Anthocyanins are various types of colourful pigments present in the: 1. A. Chloroplasts 2. B. Chromoplasts 3. C. Leucoplasts 4. D. Vacuoles Incorrect Explanation: D Chloroplast: These are green pigments containing chlorophyll that carry photosynthesis. Chromoplasts: These are coloured pigments other than green they are present in petals of the flower and in ripened fruits. They help in pollination and dispersal of seeds. Leucoplast: Leucoplast are colorless. They are triangular, tubular or of some other shape. They are mostly found in underground parts of the plants and store food. Anthocyanins: These are flamoids pigments that accumulate in large central vacuole of most plants. Anthocyanins are Blue, Red or Purple pigments form in plants especially on flowers, fruits and tubers. In acidic condition Anthocyanins appear as red pigments while blue pigment anthocyanin exist in alkaline condition. 2. Question 1 points Secretions are the products formed within the cell and pass out. Sequence followed by them is: 1. A. Ribosome ⟶ Lysosome ⟶ ER ⟶ Golgi apparatus 2. B. Ribosome ⟶ ER ⟶ Lysosome ⟶ Golgi apparatus 3. C. ER ⟶ Ribosome ⟶ Golgi apparatus ⟶ Lysosome 4. D. Ribosome ⟶ ER ⟶ Golgi apparatus ⟶ Lysosome Incorrect Explanation: D 3. Question 1 points Erythrocytes have Pores per Nucleus 1. A. 3000 
2. B. 30000 3. C. 6 or 8 4. D. 3 or 4 Incorrect Explanation: D Erythrocyte (RBC) has 3 to 4 nuclear pores per nucleus. 4. Question 1 points A crista is made up of: 1. A. Glycoproteins 2. B. Glycolipids 3. C. Lipoproteins 4. D. Phospholipids Incorrect Explanation: C Cristae are infoldings of inner mitochondrial membrane. As the lipoproteins are the major component of all the cellular membranes, so crista is also lipoprotein membrane infoldings 5. Question 1 points Which one is not the function of endoplasmic reticulum? 1. A. Nerve impulse conduction 2. B. Transport of material 3. C. Mechanical support 4. D. Synthesis of conjugated molecules Incorrect Explanation: D 
6. Question 1 points Cis and Trans face of Golgi body are ____ and ____ respectively 1. A. Convex, Concave 2. B. Concave, Convex 3. C. Convex, Convex 4. D. Concave, Concave Incorrect Explanation: A Golgi body has 2 distinct faces i.e. Cis face or a convex forming and a trans face or a concave maturing. Cis face always faces toward nucleus while the Trans face faces towards plasma membrane 7. Question 1 points Enlist the main organelle involved in rooting of newly synthesized proteins to their destinations is 1. A. Lysosome 2. B. Mitochondria 3. C. Endoplasmic Reticulum 4. D. Chloroplast 
Incorrect Explanation: C 8. Question 1 points Tay Sach’s disease indicates the deficiency of a/an: 1. A. Anabolic enzyme 2. B. Catabolic enzyme 3. C. Holoenzyme 4. D. None Incorrect Explanation: B Tay-Sach’s disease is because of absence of an enzyme that is involved in the catabolism of lipids. Accumulation of lipids in brain cells lead to mental retardation and even death. 9. Question 1 points Transport of nerve impulse within cell is the function of 1. A. R.E.R 2. B. S.E.R 3. C. Golgi bodies 4. D. None Incorrect Explanation: B Focus Point: “Within Cell” Impulse carrier within cell is “S.E.R” Impulse carrier within body is “neuron” 