Description : The covering of vacuole is known as (A) Chromoplast B) Chloroplast (C) Amyloplast (D) Tonoplast
Last Answer : (D) Tonoplast
Description : Peroxisomes and Glyoxisomes are (A) Energy transducers (B) Membrane-less organelles (C) Micro bodies (D) Basal bodies
Last Answer : (C) Micro bodies
Description : The largest organelle in a mature living plant cell is the (A) Chloroplast (B) Nucleus (C) Central vacuole (D) Dictyosomes
Last Answer : (C) Central vacuole
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 : 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 cell organelles are well-developed in secretory cells ?
Last Answer : In secretory cells, like the secretory cells of endocrine glands, organelles related to production, processing and exportation of substances are widely present and well-developed. These ... protein synthesis between the cytoplasm and the nucleus. Rough endoplasmic reticulum Golgi apparatus
Description : Which are the cell organelles that participate in the cell division and in the formation of cillia and flagella of some eukaryotic cells ?
Last Answer : The organelles that participate in the cell division and in the formation of cilia and flagella of some eukaryotic cells are the centrioles. Some cells have cillia (paramecium, the bronchial ciliated ... are very important for cell division. Cell Structure Review - Image Diversity: centrioles
Description : Eukaryotic cells have extensive intracellular membranes, termed the endomembrane system, which divide the cell into structurally and functionally distinct compartments, or organelles. These include the inner cell ... . Name a cellular component whose membrane is not part of the endomembrane system.
Last Answer : Mitochondria; also chloroplasts
Description : Hydrogen peroxide degradation in a cell is a function of (A) Ribosomes (B) Mitochondria (C) Peroxisomes (D) Glyoxisomes
Last Answer : mitochondria
Description : What are the main cytoplasmic structures present in animal cells ?
Last Answer : The main cytoplasmic structures of the cell are the centrioles, the cytoskeleton, lysosomes, mitochondria, peroxisomes, the Golgi apparatus, the endoplasmic reticula and ribosomes. Cell Structure Review - Image Diversity: cell organelles
Description : Which of the following cell part is described as a "fluid mosaic"? (A) Chloroplast (B) Vacuole (C) Cell membrane (D) Endoplasmic reticulum
Last Answer : (C) Cell membrane
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 : Which of the following is NOT a membranous organelle? (A) Lysosomes (B) Peroxisomes (C) Centrioles (D) Mitochondria
Last Answer : (C) Centrioles
Description : Cells are commonly studied in the lab. If you were examining various unlabelled slides of cells under the microscope, you could tell if the cell was from a plant by the presence of (A) A nucleus (B) A cell membrane (C) Cytoplasm (D) A cell wall
Last Answer : (D) A cell wall
Description : The process of self-digestion of selective non-functional organelles by a cell through the action of enzymes originating within the cell is referred to as (A) Pinocytosis (B) Endocytosis (C) Autophagy (D) Cytotoxicity
Last Answer : (C) Autophagy
Description : $ The biomembrane which surrounds a vacuole is called Tonoplast. ! Ribosomes have a plasma membrane.
Last Answer : $ The biomembrane which surrounds a vacuole is called Tonoplast. ! Ribosomes have a plasma membrane. A. If ... wrong D. If both As and R are wrong.
Description : What is the wall resistance of plant cells ?
Last Answer : Does this resistance facilitate or make it difficult the entrance of water in the cell? Wall resistance, or turgor pressure (TP), is the pressure made by the distension of the plant cell wall in ... it acts forcing the exiting of water and compensating the entrance of the solvent by osmosis.
Description : What are the main structures within the cell nucleus ?
Last Answer : Within the cell nucleus the main structures are: the nucleolus, an optically dense region, spherical shaped, where there are concentrated ribosomal RNA (rRNA) associated to proteins (there may be ... cell interphase; the karyotecha, or nuclear membrane, the membrane that delimits the nucleus.
Description : Why do you think most plant cells have a central vacuole while animal cells lack this organelle?
Last Answer : Animal cells do in fact have a vacuole, just not as prominent asthat of plant cells. Plant cells use the vacuole not only forstorage, but also because it adds structure and rigidity to thecell.
Description : Is central vacuole in plant cells or animal cells?
Last Answer : Plant cell
Description : How does the plant cell wall react when it is placed under hypotonic medium ?
Last Answer : The plant cell wall (the covering of the cell external to the cell membrane) is made of cellulose, a polymer of glucose. When the cell is put under hypotonic medium it absorbs too ... compensate the osmotic pressure thus forbiding excessive increase of the cellular volume and the cell lysis.
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 : what substance the plant cell wall is made ?
Last Answer : Is that substance a polymer made of which monomer? The plant cell wall is made of cellulose. Cellulose is a polymer whose monomer is glucose. There are other polymers of glucose, like glycogen and starch. Cell Structure Review - Image Diversity: plant cell wall
Description : Plant cell wall (A) Provide rigidity to the cell (B) Maintains cell shape (C) Prevents expansion of cell (D) All A, B and C
Last Answer : (D) All A, B and C
Description : Which one of the following is NOT found in the ciliates? a. A contractile vacuoLe b. Macronuclei and micronucLei c. A compLex of organelles in the tip d. Mitochondria
Last Answer : d. Mitochondria
Description : Concerning the presence of nucleus what is the difference between animal and bacterial cells ?
Last Answer : Animal cells (cells of living beings of the kingdom Animalia) have an interior membrane that delimits a cell nucleus and thus they are eukaryotic cells; in these cells the genetic material is located ... so they are prokaryotic cells and their genetic material is found dispersed in the cytosol.
Description : An animal has 80 chromosomes in its gametes, how many chromosomes would you expect to find in this animal's brain cells? (A) 120 (B) 240 (C) 40 (D) 160
Last Answer : (D) 160
Description : The correct sequence of cell organelles during photorespiration is (a) chloroplast, Golgi-bodies, mitochondria (b) chloroplast, rough endoplasmic reticulum, dictyosomes (c) chloroplast, mitochondria, peroxisome (d) chloroplast, vacuole, peroxisome.
Last Answer : (c) chloroplast, mitochondria, peroxisome
Description : The correct sequence of cell organelles during photorespiration is (1) Chloroplast, -vacuole, -peroxisome (2) Chloroplast,-Golgibodies,-mitochondria (3) Chloroplast,-Rough Endoplasmic reticulum,-Dictyosomes (4) Chloroplast,-mitochondria,-peroxisome
Last Answer : (4) Chloroplast,-mitochondria,-peroxisome
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 : What types of proteins are involved in the packaging and condensing of DNA into tightly wound nucleosome structures of a chromosome?
Last Answer : Histone
Description : What is the difference between plasma membrane and cell wall ?
Last Answer : Plasma membrane and cell wall is not the same thing. Plasma membrane, also called cell membrane, is the outer membrane common to all living cells and it is made of a phospholipid bilayer, ... made of peptidoglycans and other organic substances. Cell Structure Review - Image Diversity: cell wall
Description : The outer most layer of cell wall is (A) Primary wall (B) Secondary wall (C) Middle lamella (D) Plasma membrane
Last Answer : (C) Middle lamella
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 : 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 : Which of the following organelles contain DNA, divides and possesses some degree of autonomy? A- Golgi apparatus B- Ribosome C- Chloroplast D- Peroxisomes
Last Answer : Chloroplast
Description : By which of the following can movement of materials across animal cell membranes be accomplished? I Active transport, II Diffusion, III Pinocytosis (A) I only (B) II only (C) I and II only (D) All I, II, and III
Last Answer : Will be only two.
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 : Tissues are constructed from many distinct cell types that perform different functions in response to signals from each other and the extracellular matrix. During tissue development and tissue regeneration, ... that stem cells undergo when they are required to generate a particular type of cell?
Last Answer : Asymmetric cell division. After asymmetric division, each of the two resulting daughter cells has a unique life course. For example, one daughter cell may differentiate into a specific cell type ( ... cell), whereas the other daughter cell may remain a stem cell with unlimited proliferative ability.
Description : What is the name of the physical process that finally splits the parent cell into two identical daughter cells?
Last Answer : Cytokinesis. Also more commonly known as cell division
Description : During mitosis, the eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. Mitosis progresses through five separate morphologically distinct phases. Name, in order, these five phases of mitosis.
Last Answer : Prophase, prometaphase, metaphase, anaphase, and telophase.
Description : What common cell types are regulated by ion channels and are commonly referred to as excitable cells?
Last Answer : neurons, muscle cells, sensory receptor cells
Description : Cytoskeletal elements are responsible for giving cells their shape and provide a basis for cell movement, migration, and cell division. Name the three major classes of cytoskeletal elements in eukaryotic cells.
Last Answer : Microtubules (composed of tubulin); actin filaments (made up of actin); intermediate filaments
Description : What if Ian is looking at cells using a microscope. He sees a nucleus and a large vacuole in the central area of a cell. What type of cell is he most likely looking at?
Last Answer : I need help on my science homework!!!
Description : What is deplasmolysis of plant cells ?
Last Answer : The plant cell when placed under hypertonic medium loses a great amount of water and its cell membrane detaches from the cell wall. In that situation the cell is called plasmolysed cell. When ... medium it absorbs water and becomes a turgid cell. This phenomenon is called deplasmolysis.
Description : What are the values of DPD for plant cells under hypertonic ?
Last Answer : isotonic and hypotonic media? In plant cells under hypertonic medium there is loss of water for the exterior, SF > 0 (the vacuolar pressure is high because it is concentrated) and TP = 0 (there ... (since the osmotic pressure is totally compensated by the distension of the cell wall) and DPD =
Description : Adjacent plant cells are “cemented” together by (A) Their primary walls (B) Their secondary walls (C) A middle lamella (D) Plasmodesmata
Last Answer : (C) A middle lamella
Description : What is The gooey liquid in plant and animal cell that holds the cells organelles?
Last Answer : fghjkl;'
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