26. The number of flagella in chlamydomonas?
- 1
- 2
- 1000
- Few Thousands
27. The subunit of intermediate filaments?
- Tubulin protein
- Actin protein
- Fibrous
- Non of these
28. Small knob structures on inner surface mitochondria is called
- Elementary particle
- Fl particle
- Both a and b
- None of these
Feedback: A number of knob-like, stalked structures arising from the inner surface of inner membrane of mitochondria project into the matrix and these are called elementary particles or F1 particles or oxysomes.
29. The presence of ribosomes and DNA indicate that
- Protein is synthesize here
- Lipid and Protein is synthesize here
- carbohydrates and Protein is synthesize
- All of The Above
30. Glyoxisomes (only in plants) contains glycolic acid, oxidase and.
a. Catalase
b. Urease
Cr Trypsin
d. Oxygeanse
31. Conversion of fatty acids to carbohydrates are done by
- Peroxisome
- Endoplasmic reticulum
- Nucleus
- glyoxisomes
Feedback: The appearance of these organelles therefore, appears to coincide with the conversion of fats into carbohydrate during seed germination. The glyoxysomes contain the enzymes of fatty acid oxidation and the glyoxylate pathway.
32. Chloroplast and mitochondria are
- Same organelle
- Self replicating organelle
- Separate organism
- Separate tissues
Feedback: Mitochondria and chloroplasts are self-replicating organelles. They are produced only by growth and division of pre-existing mitochondria or chloroplasts. They cannot be formed de novo or from other organelles or pre-existing membranes. They grow by the insertion of molecules in to their membranes.
33. Chloroplast Size is
- 4–5 μm in diameter
- 5–7 μm in diameter
- 2–9 μm in diameter
- None of these
Feedback: Chloroplasts are commonly found in guard cells located in plant leaves, roughly 1–2 μm thick and 5–7 μm in diameter. Chloroplasts are oval-shaped and have two membranes: an outer membrane and an inner membrane. Between the outer and inner membrane is the intermembrane space approximately 10-20 nm wide.
34. Glyoxisomes and plastids are unique organelle found in
- Plants
- Animals
- Both of the Above
- Bacteria
Feedback: Glyoxysomes are specialized peroxisomes found in plants (particularly in the fat storage tissues of germinating seeds) and also in filamentous fungi. Seeds that contain fats and oils include corn, soybean, sunflower, peanut and pumpkin. The plastid (Greek: πλαστός; plastós: formed, molded – plural plastids) is a membrane-bound organelle found in the cells of plants, algae, and some other eukaryotic organisms. They are considered to be intracellular endosymbiotic cyanobacteria.
35. Mitochondria is absent in
- Mature WBCs
- Mature RBCs
- Mature platelets
- Immature RBCs
Feedback: The major function of RBCs is to carry oxygen for which the major protein hemoglobin has the important role. To accommodate such large quantity of Hb the RBCs are enucleated and also mitochondria are absent. The energy requirement of RBCs is only for maintaining ionic homeostasis for which Na, K- ATPase responsible. Cells that require a lot of energy, such as muscle cells, can contain hundreds or thousands of mitochondria. A few types of cells, such as red blood cells, lack mitochondria entirely. As prokaryotic organisms, bacteria and archaea do not have mitochondria.
36. Length and diameter of centriole
- 0.3-0.5μm and 0.5 μm
- 0.5μm and 0.2μm
- 0.3-0.5μm and 0.2μm
- 3-0.5μm and 0.2μm
Feedback: Centrioles/basal bodies are ~0.2 μm in diameter and their length may vary according to species and tissue type, around 0.5 μm. They are polarized along the proximo-distal axis.
37.Each Centriole consist of micro……..tubules
- 3
- 6
- 9
- 27
Feedback: Centrioles are cylindrical structures that are made up of protein tubes called microtubules. Specifically, nine groups of three microtubules, known as triplet microtubules, are linked together to make the walls of the cylinder.
38. Mitosis is missing in
- Prokaryotes
- Eukaryotes
- Humans
- Elephants
39. Prokaryotic Cell wall is made of
- Cellulose
- Chitin
- Murein
- Glycogen
Feedback: The cell walls of prokaryotes differ chemically from the eukaryotic cell walls of plant cells, which are primarily made of cellulose. Peptidoglycan, also known as murein, is a polymer consisting of sugars and amino acids that form a mesh-like layer outside the plasma membrane of bacteria, forming the cell wall. Eubacteria have a rigid cell wall made of peptidoglycan.The cell wall of most bacteria contains peptidoglycan, a polymer of linked sugars and polypeptides. Peptidoglycan is unusual in that it contains not only L-amino acids, the type normally used to make proteins, but also D-amino acids (“mirror images” of the L-amino acids).
40. Eukaryotic Cell wall is made of
- Cellulose
- Chitin
- Glycogen
- Murein
Feedback: The cell walls of prokaryotes differ chemically from the eukaryotic cell walls of plant cells, which are primarily made of cellulose.