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Cell Biology (cytology)

Parent Category: Microbiology
Cells are the building blocks of all life. Humans are multicellular beings. The study of cells in called cytology. Ask questions here about the structure and function of cells.
Cytokines, chemokines, and general hormones are the cell messagingmechanisms in higher organisms. Transcription factors and geneexpression products play big roles, too.
They both have mitchondria, phospholipid by-layer, use ribosomes, nucleus, endoplasmic reticulum.
Smooth ER aren't covered in ribosomes, but rough ER are. ER are like transport tubes that go through the cell.
Small agranulocytes that have a dense nucleus and very little cytoplasm are called Lymphocytes.
because of yo mama looser chupaley :o
The purpose of cytoplasm is to keep all organelles in place.
Basically,1 to 2 ATP molecules combine to make FADH while 2 to 3ATP molecules combine to make NADH.
Cytoplasm is very important for organisms because it is the one whotransfers certain materials all over the cell. Cytoplasm is alsoknown for being the one who diffuses harmful wastes in a cell.
The location where proteins are exported from the cell is where vesicles containing them fuse at the cell membrane.
A cell membrane is found on both plant and animal cells it selectively chooses what substances may enter or leave the cell. Hence the term selectively permeable. For a more advanced explanation I recommend you research protein icebergs and the different types of transport a membrane can take part in...
Let's look at human cells. If you didn't have cells you wouldn't exist. Your entire body, skeleton, muscles, organs, etc are comprised of cells. Inside those cells are thousands of water molecules (hence the reason your body is 70% water). The cells make it possible for everything in the human body...
Yes. Your question should read 'Are mitochondria only found in.........'!
Reproduction is not essential for the survival of a single organismfor a relatively brief period of time! A bad question as it is opento misinterpretation!
No. No prokaryote has any sort of endoplasmic reticulum.
proteins, lipids, carbohydrates specific Glycoproteins, Glycolipids, cholestrol and mostly phospholipids
Cholesterol. It maintains the structure integrity of the membranes
The cytoskeleton provides shape and gives [mechanically] structuralsupport. It also serves as a monorail to transport substancesaround the Cell; Structural: It provides structural support to Cells and stabilizesthe Desmosomes [Cell-Gap junctions]; Movement: It assists with cytosol streaming and...
Gram stain binds to peptidoglycan, so bacteria with doublemembranes with thin peptidoglycan layers are more likely not tobind to it, so are usually gram negative, while single membranedbacteria with thick peptidoglycan layers are more likely to be grampositive.
No, they break contents of the cell down.
The Golgi apparatus, first described by Camillo Golgi, consists ofa system of membrane-bound vesicles arranged approximately parallelto each other in stacks called cisterns. The material synthesizednear the ER is packaged and dispatched to various targets insideand outside the cell through the Golgi...
No cell wall is a rigid cell wall (made of cellulose), plasmamembrane that act like a membrane present underneath of cell wallin plants.
ultrasonic homogenizer, ultrasonic homogeneous reactor system couldhelp your achieve cell chemical reactions. If you want to crushcell, you also could choose ultrasonic cell crusher, which is highefficient and accurate.
Mitochondria actually does produce carbon dioxode. In the processof cellular respiration 2 carbon dioxide molecules are made fromevery citrate molecule that starts the Krebs cycle.
nothing the cell does exactly the same thing the only thing that is different is that the cells divide in more pieces depending on the size. formation of a cell plate
Cellular respiration occurs in the mitochondria. The equation forcellular respiration is C6H12O6 + 6O2 ---> 6CO2 + 6H2O
Part of the DNA molecule (gene) is transcribed into an RNA moleculethat exits through the pores in Penis the nucleus. Once the RNA reaches the ribosome in the cytoplasm ittranslates into a protein.
If cells don't reproduce correctly then most likely the cell diesand dissolves into the system and is replaced by another fromdivision in a different placeto refill the void .
I'm not sure what you mean by 'lost its 3D' but I think you mightmean when a protein is broken down or heated it becomes denatured.
Epithelia cells are the first cell type that differentiate in the embryo during the 8 cell stage. Epithelia are tissues that are formed by epithelial cells. These specialized cells are differ from others by the nature of avascular, sensory, gliding surface layer, tight barrier and differs from...
They are selectively permeable, provides structure to cells.
No, they are eukaryotes. -love: Gina Schriefer
Google vacuole for many pictures. The vacuole is simply a membranous organelle that holds water, organic, and inorganic molecules for various reasons determined by the cell. Usually circular, and colored some shade of blue in diagrams, can be practically any size.
Answer . Catholics are COMPLETELY against stem cell research.. Another Answer . Catholics are completely against embryonic stem cell research, which is completely immoral because it involves harvesting and destroying human embryos - infants.. Catholics support adult stem cell research, and...
Cell is having three intact structures, cell membrane, cytosol, nucleus. In cytosol or cytoplasm, nutrients, ions, water, proteins, and other compounds are dissolved in it. Cell organelles such as Golgi apparatus, mitochondia, vacuoles, ribosomes, ER are all found in cytoplasm.
Mostly, RNA editing occurs in nucleus. RNA editing such as C to U deamination can be accompanied by APOBEC proteins in the nucleus. Insertion or deletion of bases also reported. In addtion, RNA edition known to occur in mitochondria and plastids.
yes.Paramecium is a eukariyotes.All eukariyuotes have mitochondria
Plasma membrane in made up of phospholipid bilayer and proteins. It has a hydrophobic tail facin each other on the bilayer, and polar head that face outside to the polar environment. Proteins such as integral and peripheral proteins are presenting on the membarane.
The cell membrane is a lipid bilayer. It is mainly composed of lipids, proteins, and carbohydrates.
Both animal cells and plant cells have ER in them.
well there are three instead but you could use two out of those three 1.diffusion 2. DNA 3. surface area to volume ratio Hope this help...
Like eukaryote, prokaryote also containing membrane bound vesicles and vacuoles used in cell clean up and metabolism. It is more prominent on eukaryote to carry out diverse process including secretion of proteins and clearing up pathogens. Prokaryotic vacuoles and vesicles are may not be as...
Our body is made up of tissues and tissues are actually a group of cells. Cells carry out the metabolic process such as synthesis of molecules, transport, secretion and digestion and so on. A particular group of tissue or cells destined to carry out a distinct function. For example blood tissue are...
Organelles are the specific units inside the cell (like the cell wall). The structure depends on what specific unit you're talking about. For example: the cell wall is composed of phospholipids.
Yes mitochondria are organelles in the cytoplasm of cells. Their function is to make the energy for a cell.. actually, the mithochondrion (plural mitochondia) is an organelle in both, plant and animal cell, its job is to oxidise biological fuels, such as, liquids, protiens, and fats. so basically...
Plasma membrane is made up of proteins and phospholipids. Integral protein are attached fully on the membarne region. whereas the periphera protein bind on the surface (one side or top) of the membrane.
cytoplasmic organelles both of them have their own DNA
Mitochondria known as cell's powerhouse. It carry out the cellular respiration process such as Kreb's cycle, ETC and oxidative phosphorylation that make ATPs or Energy. It make energy from the pathways where sugar is being digested (glycolysis) in cytoplasm.
Ribosomes are synthesized in the nucleolus, which is anon-membrane-bound organelle containing much of the cell's RNA. The endoplasmic reticulum (more specifically the "rough" ER) ineukaryotic cells contains temporarily membrane-bound ribosomes,where RNA goes to be translated.
Because cells will wear out and eventually die. They have to go through cell division to ensure that there are enough working cells in the organism.
Protein is a polymer of amino acid. They are connected by peptide bonds.Proteins are needed for cellular function such as catalysis, transport, secretion, synthesis and so on.
Fats are known as lipids in biology. Cell membranes consists of a phospholipid bilayer, which are 2 layers of phospholipids. A phospholipid is a phosphate group attached to a glycerol, which is attached to 2 fatty acid tails. At the biochemical level, fat is simply a long chain of carbons with...
They enter/exit through a passive transport process called diffusion. It is caused by a concentration gradient within the two things being exchanged. The molecules diffuse across the membrane from the high concentration to the lower concentration side.
I would always think of the endoplasmic reticulum like FedEx, shipping things out to the Golgi body (Golgi Complex)
nucleolus, nucleoplasm and nuclear pores
Mitochondria are the power plants of the cell and they provideenergy so the cell can function.
Because plants energy production and life process is different form animals. Plant vacuoles are bigger, it is an important membrane bound organlle contain water, organin&inorgain molecule and enzymes.They have variety of role inculding maintianing pH, hydostatic pressure, managing water and waster...
Prokaryotic organisms lack membrane bound nuclei, and also.. Lack arms.
1.While eucaryotes have 80 ribosomes(except at mitrochondria and chloroplasts),procaryotes have 70 ribosomes. 2.Procaryotic cells are mainly unicellular in nature (e.g bacteria,archae),while eucaryotic cells are predominately multicellular(e.g plants,animals).
Yes fungus cells are eucaryotic so are algae and protozoa they all belong to the Domain Eucarya.
AN organelle that transports protein through the cellType your answer here...
Interaction between a cell and another cell. It's done usually by lipoproteins embedded in the plasma membrane. It really depends on the type of cell and the situation though.
Plasma membrane gives structure to the cell, serve as boundary. It allows the selective passage of molecules across the cell (semi permeable). Starts the signalling event from the receptors it posses on the membrane surface when there is a stimuli bind to it.
DNA is the nuclear content of the DNA found in nucleus. Nucleus separates the genomic DNA from cytoplasm by membrane bound organelle called nucleus. Nucleus has nucleoplasm, nucleolus and genome.
Egg cell is an individual cell. Egg or sperm cells are known as germ cells that has only one set of chromosomes (n). In contrary, somatic cells posses 2n. Egg cells are formed in female.
Stem cells are cells that found in all multicellular organisms,that can divide and differentiate into diverse specialized celltypes and can self-renew to produce more stem cells. This is whystem cells are so important and controversial. Due to theirplasticity, they can be taken from one portion of...
The endoplasmic reticulum that is why its nickname is the road.
The ER and Golgi complex serves a place for protein maturation. Polypeptide chain after synthesis undergoes folding events and post translation modification such as acylation, glycoscylation. Golgi vesicles secrete the protein to extracellular space if the proteins is a secretory proteins. It all...
Nucleus itself a cell organells that control all the cellular event. Nucleus is membrane bound organelle has nucleoplasm, nucleolus and Genomic DNA and RNAs in it. Nucleus conduct transport of molecules across the nuclear membranes and transport out the mRNA for protein synthesis.
Both prokaryotes and eukaryotes have a cell membrane.
This question is difficult to understand/answer, but in general I would say eukaryotic cells are made up of mostly proteins and DNA. (Although there are many other components such as saccharides, RNAs, and the all the all-so-important cell membrane which is made up primarly of phospholipids - so It...
Instructions from DNA are carried to ribosomes by molecules ofamino acids. These are carried by tRNA while mRNA carriesinformation from the genes to ribosomes.
First A. = 'usually involves operons'. 2nd A. = 'No ... that is done by prokaryotes and is a much simpler way of organizing genetic switches and regulating expression. Eukaryotes use a much more complex network involving the likes of enhancers, silencers, insulators, trans and cis acting...
Stem cells are not an invention, they are the product of biological evolution.
Both water tanks and vacuoles can store water for subsequent use.
A Ribose sugar as 'opposed to' a 2'- deoxy - Ribose sugar.
ribosomes are located in the cytoplasm of prokaryote and eukaryote. It is considered as the protein factory of the cell that synthesized by copying the message in the mRNA. Eukaryotes have 80 S ribosomes, whereas prokaryotes have 70 S.
The boundary of the animal cell is the cell or plasma membrane. It is semi permeable, meaning it selectively transports ions or salts across the cell. They have transport proteins such as ion channels and receptor proteins than regulates transport and signalling events respectively.