Description : Organelles involved in photorespiration are (a) Mitochondria, chloroplasts and ribosomes (b) Mitochondria, Peroxisomes and chloroplasts (c) Mitochondria, nucleus and ribosomes (d) Mitochondria, proxisomes and glyoxisomes
Last Answer : Ans. ((b))
Description : These are involved in conversion of fats to carbohydrates by oxidation of fats. (A) Peroxisomes (B) Microsomes (C) Glyoxisomes (D) Phagosomes
Last Answer : (C) Glyoxisomes
Description : Peroxisomes and Glyoxisomes are (A) Energy transducers (B) Membrane-less organelles (C) Micro bodies (D) Basal bodies
Last Answer : (C) Micro bodies
Description : Which of the following is NOT a membranous organelle? (A) Lysosomes (B) Peroxisomes (C) Centrioles (D) Mitochondria
Last Answer : (C) Centrioles
Description : Which of the following organelles or structures is found in both plant and animal cells? (A) Central vacuole (B) Tonoplast (C) Cell wall (D) Peroxisomes
Last Answer : (D) Peroxisomes
Description : Oxidase enzymes responsible for producing H2O2 are present in a. Mitochondria b. Ribosomes c. Peroxisomes d. Polysomes
Last Answer : Peroxisomes
Description : Which of the following organelle lack membrane? (a) Mitochondria (b) Ribosomes (c) Microtubules(d) Peroxisomes
Last Answer : (b) Ribosomes
Description : Where in the cell can ribosomes be found ?
Last Answer : What is the main biological function of ribosomes? Ribosomes can be found free in the cytoplasm, adhered to the outer side of the nuclear membrane or associated to the endoplasmic reticulum ... structures where protein synthesis takes place. Cell Structure Review - Image Diversity: ribosomes
Description : Which of the following would you NOT find in a bacterial cell (A) DNA (B) Cell membrane (C) Golgi apparatus (D) Ribosomes
Last Answer : (C) Golgi apparatus
Description : The structure within a cell that distinguishes the cell as being eukaryotic, and prokaryotic is (A) Ribosomes (B) Cell membrane (C) Cell wall (D) Nucleus
Last Answer : (D) Nucleus
Description : Mitochondria can be considered the ____________of the cell because they generate an enormous amount of cellular adenosine triphosphate (ATP) to fuel the cell.
Last Answer : “Power plant” or “Power house”
Description : Mitochondria are referred to as the ‘powerhouses’ of a cell. This is because they convert food to energy, or ATP, more efficiently than processes which rely on anaerobic, or non-oxygen using, energy production alone. Name the energy production process carried out by mitochondria.
Last Answer : Oxidative phosphorylation.
Description : What part of the cell serves as the intracellular highway? (A) Endoplasmic reticulum (B) Golgi apparatus (C) Cell membrane (D) Mitochondria
Last Answer : (A) Endoplasmic reticulum
Description : Plant cells contain the following 3 things not found in animal cells _________, _____________ and ______________. (A) Plastids / Chlorophyll / Membrane (B) Chloroplast / Cell wall / Golgi body (C) Plastids / Cell wall / Chlorophyll (D) Mitochondria / Cell wall /
Last Answer : (C) Plastids / Cell wall / Chlorophyll
Description : The site of enzymes directing the metabolic oxidation (respiration), ATP synthesis and considered as power house of cell are (A) Lysosomes (B) Microsomes (C) Mitochondria (D) Golgi apparatus
Last Answer : (C) Mitochondria
Description : Ribosomes are attached with ER by (A) Larger subunit (B) Smaller subunit (C) Na+ ions (D) None of these
Last Answer : (A) Larger subunit
Description : Ribosomes are constructed in the (A) Endoplasmic reticulum (B) Nucleoid (C) Nucleolus (D) Nuclear pore
Last Answer : (C) Nucleolus
Description : What is the endosymbiotic hypothesis about the origin of mitochondria ?
Last Answer : What are the molecular facts that support the hypothesis? To which other cellular organelles the hypothesis can also be applied? It is presumed that mitochondria were primitive aerobic prokaryotes that were ... because they have own DNA, RNA and ribosomes and they can self-replicate too.
Description : Why can mitochondria be considered the power plants of the aerobic cells ?
Last Answer : Mitochondria are the power plants of aerobic cells because within them the final stages of the cellular respiration process occurs. Cellular respiration is the process of using organic molecule (mainly ... of the cellular respiration take place: the Krebs cycle and the respiratory chain.
Description : What are mitochondria ?
Last Answer : What is the basic morphology of these organelles and in which cells can they be found? Mitochondria are the organelles in which the most important part of the cellular respiration occurs: ... and ribosomes, mitochondria can self-replicate. Cell Structure Review - Image Diversity: mitochondria
Description : Name two unique features of mitochondria.
Last Answer : Surrounded by two membranes (an inner and an outer membrane); have their own genome
Description : Infoldings of inner membrane in mitochondria are called (A) Grana (B) Thyallkoids (C) Cristae (D) Frets
Last Answer : (C) Cristae
Description : The d igest ive enzymes of ce l lu lar compounds are confined to (A) Lysosomes (B) Ribosomes (C) Peroxisomes (D) Polysomes
Last Answer : A
Description : Polyribosomes are aggregates of (a) ribosomes and rRNA (b) only rRNA (c) peroxisomes (d) several ribosomes held together by string of mRNA.
Last Answer : (d) several ribosomes held together by string of mRNA
Description : The difference between smooth and rough endoplasmi reticulum is the lack of: a) ATP b) proteins c) ribosomes d) peroxisomes
Last Answer : ANSWER: C -- RIBOSOMES
Description : Which structures perform the function of mitochondria in bacteria? (a) Nucleoid (b) Ribosomes (c) Cell wall (d) Mesosomes
Last Answer : ) Mesosomes
Description : What is the function of the plant cell wall ?
Last Answer : The plant cell wall has structural and protective functions. It plays important role in the constraint of the cell size, preventing the cell to break when it absorbs much water.
Description : In many types of cancer, proteins that are crucial regulators of the cell cycle are often mutated and cannot function correctly. This leads to the evasion of apoptosis and to the loss of control of cell ... protein named p53. What is the normal function of p53 that is lost when it is mutated?
Last Answer : Normally, p53 senses DNA damage and acts as a transcription factor for checkpoint control genes.
Description : In order to function, CDKs must interact with members of a separate family of proteins named the cyclins. Do individual cyclins remain associated with the same CDKs throughout the entire cell cycle?
Last Answer : No. Separate cyclins interact with specific CDKs only during defined periods of the cell cycle.
Description : Multiple checkpoints in the eukaryotic cell cycle ensure that division occurs only after sufficient growth and faithful DNA replication, and only when favorable conditions exist. Of the many proteins involved in ... CDKs) are among the most important. How do CDKs function to control the cell cycle?
Last Answer : CDKs phosphorylate various protein substrates that are required for cell cycle progression. Some of the important substrate proteins that CDKs phosphorylate include condensin proteins, which are essential ... which form a stabilizing network under the nuclear membrane that assembles during mitosis.
Description : Which of the following structure-function pairs is mismatched? (A) Lysosome-intracellular digestion (B) Golgi body-secretion of cell products (C) Ribosome-protein synthesis (D) Glyoxysome-detoxification
Last Answer : (D) Glyoxysome-detoxification
Description : During photorespiration, the oxygen consuming reaction(s) occur in (a) stroma of chloroplasts (b) stroma of chloroplasts and mitochondria (c) stroma of chloroplasts and peroxisomes (d) grana of chloroplasts and peroxisomes.
Last Answer : (c) stroma of chloroplasts and peroxisomes
Description : In germinating seeds, fatty acids are degraded exclusively in the (a) peroxisomes (b) mitochondria (c) proplastids (d) glyoxysomes.
Last Answer : (d) glyoxysomes.
Description : Q. What is the function of Golgi complex?
Last Answer : A. Maturation and processing of nascent proteins, glycosylation of proteins, secretion newly synthesised proteins
Description : How do RTKs function?
Last Answer : Activating signaling molecules (ligands, agonists) bind to RTKs, causing neighboring RTKs to form cross-linked dimers. Cross-linking leads to tyrosine kinase activation via cross-phosphorylation. Once ... cascade of reactions that ultimately lead to changes in the patterns of gene transcription.
Description : Briefly describe how ion channels function.
Last Answer : Ion channels open and close in response to chemical or mechanical signals. When an ion channel opens, ions rapidly move into or out of the cell. Most ion channels close and enter a resting ... gradient and can lead to a rapid wave of ion channel activation throughout the entire plasma membrane.
Description : What is the function of proteins like microtubules and actin filaments?
Last Answer : Give structure to cells.
Description : Typically proteins do not work in their simple amino acid chain structure but instead fold and form shapes that help in their function. Which of the structures is described as being in alpha helices and beta sheets?
Last Answer : Secondary Protein Structure
Description : It is a mesh of interconnected membranes that serve a function involving protein synthesis and transport. (A) Endoplasmic reticulum B) Cytoskeleton (C) Golgi apparatus (D) Both A and B
Description : Which of the following correctly matches an organelle with its function? (A) Mitochondrion . . . photosynthesis (B) Nucleus . . . cellular respiration (C) Ribosome . . . manufacture of lipids (D) Central vacuole . . . storage
Last Answer : (D) Central vacuole . . . storage
Description : Which of the following cell organelles are not found in a bacterial cell? 1. Glyoxysomes 2. Lysosomes 3. Mitochondria 4. Ribosomes Select the correct answer using codes given below: (a) 1 and 4 (b) 2 and 4 (c) 1, 2 and 3 (d) 1, 2, 3 and 4
Last Answer : Ans:(a)
Description : Which of the following is known as ‘suicide bags of the cell’? (1) Mitochondria (2) Golgi Bodies (3) Lysosomes (4) Ribosomes
Last Answer : (3) Lysosomes Explanation: Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
Description : Which of the following organelle of the cell contain their own genetic material? (1) Mitochondria (2) Ribosomes (3) Golgi complex (4) None of the above
Last Answer : (1) Mitochondria Explanation: Nucleus is the central organelle of the cell which encloses the DNA. Apart from the nucleus, there are few other organelles which have their own DNA.
Description : Which of the following organelles are called the Protein Factories of the cell? (1) Chloroplasts (2) Lysosomes (3) Mitochondria (4) Ribosomes
Last Answer : (4) Ribosomes Explanation: The ribosome works as the protein factory in every living cell. It gathers amino acids and assembles them into protein chains to make almost anything the cell needs.
Description : ______ is the cell organelle, in which the biochemical processes of respiration and energy production occur. (1) Mitochondria (2) Chloroplast (3) Ribosomes (4) Nucleus
Last Answer : (1) Mitochondria Explanation: Mitochondria is an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
Description : Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the ... as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.
Last Answer : (d) on ribosomes present in cytoplasm as well as in mitochondria.
Description : .Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the ... as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.
Description : Which part of the plant cell is known as power house? (A)Golgi bodies (B) Ribosomes (C)Mitochondria (D) Lysosomes
Last Answer : (C)Mitochondria
Description : Cell Organelle found only in plants are— (A) Mitochondria (B) Golgi complex (C) Ribosomes (D) Plastids
Last Answer : (D) Plastids
Description : What used to be described as Nissl’s granules in a nerve cell are now identified as (a) cell metabolites (b) fat granules (c) ribosomes (d) mitochondria.
Last Answer : (c) ribosomes