The cell that expanded itself to this point is called turgid cell ?

The cell that expanded itself to this point is called turgid cell ?
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Cells must constantly manage metabolic pathways, and this is often done by balancing specific biochemical reactions within a pathway. For example, the metabolic product of one pathway may block the formation of that specific metabolite at an earlier point in the pathway to prevent a buildup of that specific product. What is this process called?

Description : Cells must constantly manage metabolic pathways, and this is often done by balancing specific biochemical reactions within a pathway. For example, the metabolic product of one pathway may block the formation ... the pathway to prevent a buildup of that specific product. What is this process called?

Last Answer : Feedback inhibition

Isolation of cellular components to determine their chemical composition is called (A) Cell differentiation (B) Chromatography (C) Cell fractionation (D) All of these

Description : Isolation of cellular components to determine their chemical composition is called (A) Cell differentiation (B) Chromatography (C) Cell fractionation (D) All of these

Last Answer : (C) Cell fractionation

The intake of solid food by infloding of cell membrane is called (A) Exocytosis (B) Pinocytosis (C) Phagocytosis (D) Both B and C

Description : The intake of solid food by infloding of cell membrane is called (A) Exocytosis (B) Pinocytosis (C) Phagocytosis (D) Both B and C

Last Answer : (C) Phagocytosis

In the phase when the cell is not dividing ?

Description : In the phase when the cell is not dividing ?

Last Answer : interphase) is there activity within the cell nucleus? In the interphase there is intense metabolic activity in the cell nucleus: DNA is duplicating, euchromatin is being transcript and RNA is produced.

What is the main cell organelle involved in cell digestion ?

Description : What is the main cell organelle involved in cell digestion ?

Last Answer : What are the properties of that organelle that enable it to the task? The organelles responsible for intracellular digestion are the lysosomes. Lysosomes are vesicles that contain digestive enzymes ... digested and then digestion takes place. Cell Digestion Review - Image Diversity: lysosomes

Which cell organelles are well-developed in secretory cells ?

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

What are cell movements ?

Description : What are cell movements ?

Last Answer : How are these movements created? Cell movements are movements performed by cell structures, like the movements of cilia and flagella, the pseudopod movements (in amoeba, macrophages, etc. ... action, by differences of viscosity among cytoplasmic regions and by intracellular contraction systems.

What is meant by suction force of the plant cell ?

Description : What is meant by suction force of the plant cell ?

Last Answer : Does the suction force facilitate or make difficult the entrance of water in the cell? The suction force (SF) is the osmotic pressure of the plant cell vacuole, i.e., of the vacuolar internal ... vacuole the cytosol becomes hypertonic in relation to the exterior and more water enters the cell.

How does the plant cell wall react when it is placed under hypotonic medium ?

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.

What is mass transportation across the cell membrane ?

Description : What is mass transportation across the cell membrane ?

Last Answer : Mass transportation is the entrance or the exiting of substances in or from the cell engulfed by portions of membrane. The fusion of internal substance-containing membranous vesicles with the cell ... cell after they have been engulfed by projections of the membrane is called endocytosis.

How does the sodium-potassium pump present in the cell membrane work ?

Description : How does the sodium-potassium pump present in the cell membrane work ?

Last Answer : What is the importance of this protein for the cell? The sodium-potassium pump is the transport protein that maintains the concentration gradient of these ions between the intra and the ... maintain the cellular metabolism. Cell Membrane Review - Image Diversity: sodium-potassium pump

What are differentiations of the cell membrane ?

Description : What are differentiations of the cell membrane ?

Last Answer : In some types of cells, the cell membrane present differentiations that are necessary for the specific functions of the cells. The main differentiations are the microvilli and the structures for ... tight junctions (zonula occludens), zonula adherens (adherens junctions) and gap junctions.

What are the basic constituents of the cell membrane ?

Description : What are the basic constituents of the cell membrane ?

Last Answer : The cell membrane is formed of lipids, proteins and carbohydrates. The membrane lipids are phospholipids, a special type of lipid to which one extremity a phosphate group is bound thus ... cell membrane. Cell Membrane Review - Image Diversity: phospholipid bilayer membrane proteins glycocalyx

Concerning permeability what type of membrane is the cell membrane ?

Description : Concerning permeability what type of membrane is the cell membrane ?

Last Answer : The cell membrane is a selectively permeable membrane, i.e., it allows the passage of water and some selected solutes. Cell Membrane Review - Image Diversity: cell membrane

What are plant cell vacuoles ?

Description : What are plant cell vacuoles ?

Last Answer : What are their functions? How is the covering membrane of the vacuoles called? Plant cell vacuoles are cell structures delimited by membranes within which there is an aqueous solution made of ... delimits the vacuoles is called tonoplast, named after the osmotic function of the structure.

What is the function of the plant cell wall ?

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.

what substance the plant cell wall is made ?

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

Which are the cell organelles that participate in the cell division and in the formation of cillia and flagella of some eukaryotic cells ?

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

On which organelle of the cell structure does intracellular digestion depends ?

Description : On which organelle of the cell structure does intracellular digestion depends ?

Last Answer : What is the chemical content of those organelles? Intracellular digestion occurs by the action of lysosomes. Lysosomes have digestive enzymes (hydrolases) that are made in the rough endoplasmic ... apparatus. Lysosomes are hydrolase-containing vesicles that detach from the Golgi apparatus.

Where in the cell can ribosomes be found ?

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

What are the main structures within the cell nucleus ?

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.

What are the three main parts of a eukaryotic cell ?

Description : What are the three main parts of a eukaryotic cell ?

Last Answer : The eukaryotic cell can be divided into two main portions: the cell membrane that separates the intracellular space from the outer space phisically delimiting the cell; the cytoplasm, the interior ... and the nucleus, the membrane-delimited internal region that contains the genetic material.

Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell ?

Description : Which type of cell came first in evolution the eukaryotic cell or the prokaryotic cell ?

Last Answer : This is an interesting problem of biological evolution. The most accepted hypothesis asserts that the more simple cell, the prokaryotic cell, appeared early in evolution than the more ... from the mutualist ecological interaction between aerobic prokaryotes and primitive anaerobic eukaryotes.

What are the main respective constituents of cell walls in bacteria ?

Description : What are the main respective constituents of cell walls in bacteria ?

Last Answer : protists, fungi and plants? In bacteria cell wall is made of peptidoglycans; among protists algae have cell wall made of cellulose; in fungi, the cell wall is made of chitin (the same substance that makes the exoskeleton of arthropods); in plants, the cell wall is made of cellulose too.

What is the difference between plasma membrane and cell wall ?

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

What is the plasma membrane of the cell ?

Description : What is the plasma membrane of the cell ?

Last Answer : What are its main functions? The plasma membrane is the outer membrane of the cell it delimits the cell itself and a cell interior with specific conditions for the cellular function. Since it ... passage of substances inwards or outwards. Cell Structure Review - Image Diversity: cell membrane

Is there any bacteria made of more than one cell ?

Description : Is there any bacteria made of more than one cell ?

Last Answer : There are no pluricellular bacteria. All bacteria are unicellular prokaryotic.

Are there living beings without cell ?

Description : Are there living beings without cell ?

Last Answer : The virus is considered the only alive beings that do not have cells. Virus are constituted by genetic material (DNA or RNA) enwrapped by a protein capsule. They do not have membrane and cell organelles neither self-metabolism.

What is the cell theory ?

Description : What is the cell theory ?

Last Answer : Cell theory is a theory that asserts that the cell is the constituent unit of the living beings. Before the discovery of the cell, it was not recognized that the living beings were made of building blocks like cells. The cell theory is one of the basic theories of Biology.

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 proliferation? For example, many cancer cells carry two mutant copies of the gene that codes for a tumor suppressor protein named p53. What is the normal function of p53 that is lost when it is mutated?

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.

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, stem cells serve as a reservoir of undifferentiated cells that have the capacity to mature into different cell types. What is the name of the process that stem cells undergo when they are required to generate a particular type of cell?

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.

What is the name of the physical process that finally splits the parent cell into two identical daughter cells?

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

At the beginning of which phase of mitosis does each duplicated and condensed chromosome consisting of two identical sister chromatids align along the cell equator?

Description : At the beginning of which phase of mitosis does each duplicated and condensed chromosome consisting of two identical sister chromatids align along the cell equator?

Last Answer : Metaphase

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.

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.

Are the levels of the cyclins constant throughout the cell cycle?

Description : Are the levels of the cyclins constant throughout the cell cycle?

Last Answer : No. Cyclins are synthesized only when required and then they are degraded by specific enzymes at defined times in the cell cycle.

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?

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.

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 cell cycle control, cyclin-dependent kinases (CDKs) are among the most important. How do CDKs function to control 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.

The eukaryotic cell cycle consists of discrete phases. One of these is named the M or mitosis phase during which the cell divides. Following the M phase is a period known as interphase that is made up of three distinct phases. Name, in order, the three separate phases of interphase.

Description : The eukaryotic cell cycle consists of discrete phases. One of these is named the M or mitosis phase during which the cell divides. Following the M phase is a period known as interphase that is made up of three distinct phases. Name, in order, the three separate phases of interphase.

Last Answer : G1, S and G2

What are integrins and do they influence cell-cell signaling?

Description : What are integrins and do they influence cell-cell signaling?

Last Answer : Integrins are a diverse family of transmembrane proteins consisting of alpha and beta subunits that are found in all animal cells. Integrins link the actin cytoskeleton to the ... movement, and can thus influence actin cytoskeleton dynamics and intracellular signaling of neighboring cells.

What are gap junctions and how do they contribute to cell-cell signaling?

Description : What are gap junctions and how do they contribute to cell-cell signaling?

Last Answer : Gap junctions are specialized connections that form a pore between adjacent cells, which permit small molecules and ions to move from one cell to another. In this way, gap junctions provide metabolic and electrical coupling between cells.

List several side-to-side cellular junctions that can influence cell signaling.

Description : List several side-to-side cellular junctions that can influence cell signaling.

Last Answer : Gap junctions, desmosomes, adherens junctions, integrin connections

How do RTKs differ from other cell surface receptors?

Description : How do RTKs differ from other cell surface receptors?

Last Answer : RTKs are receptors that contain intrinsic enzyme (tyrosine kinase) activity.

What common cell types are regulated by ion channels and are commonly referred to as excitable cells?

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

Name three classes of cell surface receptors

Description : Name three classes of cell surface receptors

Last Answer : G-protein-coupled receptors (GPCRS) - ion channel receptors - enzyme-linked receptors (example: receptor tyrosine kinases –RTKs)

Mitochondria can be considered the ____________of the cell because they generate an enormous amount of cellular adenosine triphosphate (ATP) to fuel the cell.

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”

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 membrane, nuclear envelope, endoplasmic reticulum, the Golgi apparatus, and lysosomes. Name a cellular component whose membrane is not part of the endomembrane system.

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

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.

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

Are all genes expressed at the same time in all cell types?

Description : Are all genes expressed at the same time in all cell types?

Last Answer : No- genes are expressed at different times or in different cells types. There are several sequences in DNA that regulate when a genes is transcribed, such as- promoters and enhancer ... to start transcription and operator sequences that allow for external proteins to cause activation or repression.

Metabolism is carried out by a large class of proteins that decrease the activation energy required for chemical reactions inside a cell. Therefore they only facilitate reactions that would naturally occur at a much slower rate. What is the name of these proteins that speed up biochemical reactions?

Description : Metabolism is carried out by a large class of proteins that decrease the activation energy required for chemical reactions inside a cell. Therefore they only facilitate reactions that would naturally occur at a much slower rate. What is the name of these proteins that speed up biochemical reactions?

Last Answer : Enzymes

Name the three metabolic processes used to produce energy in a eukaryotic cell when oxygen is present.

Description : Name the three metabolic processes used to produce energy in a eukaryotic cell when oxygen is present.

Last Answer : Glycolysis, Citric Acid Cycle, Oxidative Phosphorylation. Or glycolysis and respiration, but the question specifies three processes.