Cell Biology (Medical Entrance)
Description: GATE | |
Number of Questions: 15 | |
Created by: Seema Agrawal | |
Tags: Cell Biology Medical Entrance Endomembrane System of Cell Discoveries related to Cell Non Endomembrane System of Cell Biology Outer Membrane System of Cell |
Which of following pairs of ‘cell organelle - corresponding function’ is/are incorrectly matched?
- Rough endoplasmic reticulum - Protein synthesis
- Mitochondria - Lecithin synthesis
- Chloroplast - Digestion of food particles
Endoplasmic reticulum is involved in
- Detoxification
- Ribosome formation
- Lipid synthesis
- Glycogenolysis
Which of the following statements is/are incorrect?
A. Plasma membrane is composed of lipids and proteins. B. The cell wall is composed of lipids and phospholipids in plants and is located outside the cell membrane. C. The nucleus in eukaryotes is covered by a single-layered membrane. D. Photosynthesis occurs in chromoplasts.
Which of the following cell organelles is absent in animal cell as well as in fungi?
Match the List-I with List-II. ||| |---|---| |List-I (cell organelle) |List-II (appropriate function)| |i. Ribosomes|1. inheritance| |ii. SER|2. mechanical support| |iii. Nucleus|3. synthesis of lipids| |iv. Plasma membrane|4. protein synthesis|
Which of the following statements is/are correct about endoplasmic reticulum?
A. The endoplasmic reticulum is a large network of membrane-bound tubes and sheets.
B. The transport of materials (especially proteins) between various regions of the cytoplasm or between the cytoplasm and the nucleus is the function of the endoplasmic reticulum.
C. In the pancreatic cells of the vertebrates, smooth endoplasmic reticulum acts as a detoxifying agent for poisons and drugs.
Which of the following is/are not the function(s) of lysosomes?
A. Defence B. Digestion C. Protein synthesis
Mark the incorrect statement.
Which of the following statements is/are false? A. The waxy substance associated with the wall of cork cells is suberin. B. Abnormal secondary growth observed in Withania. C. Intercalary meristem results in secondary growth.
Which of the following characters are absent in monocotyledon roots? A. Diarch vascular bundles B. Pith C. Hexarch vascular bundles D. Cambium
Sclerenchyma cells are referred to as stone cells in
A. Pyrus communis
B. Cannabis sativa
C. Cydonia oblonga
D. Hoya carnosa
Match the List A with List B and select the correct answer using the codes given below. ||| |---|---| |List A (cell/ cell organelle) |List B (discovering scientists)| |P. Golgi apparatus|1. Plade| |Q. Ribosome|2. Bowman| |R. Nucleolus|3. Camillo| |S. Endoplasmic reticulum|4. Porter|
Identify the unmatched pair(s). A. Heplostele: plate-like regions of xylem appear in transverse section surrounded by phloem tissue B. Actinostele: a variation of the protostele in which the core is lobed C. Solenostele: cylinder of vascular tissue contains no more than one leaf gap in any transverse section D. Eustele: primary vascular tissue consists of vascular bundles in one or two rings around the pith
About xylem, which of the following statements is/are false? P. Primary cell wall of xylem gives support to the plant. Q. The walls of tracheids are made up of lignin. R. Parenchyma cells of xylem provide mechanical support, defence and water transport.
Match the Group-I with Group-II and select the correct answer using the codes given below. ||| |---|---| |Group-I |Group-II| |P. Leeuwenhoek|1. first saw and described a living cell| |Q. Kolliker|2. named endoplasmic reticulum| |R. Porter|3. discovered ribosomes| |S. Robinson and Brown|4. firstly observed mitochondria|