what are the basic features of cells ?
they have cell organelles such as cell membrane, nucleus, mitochondria and also both rough and soft endoplasmic reticulum. they perform respiration through mitochondria with/without the presence of oxygen. they contain hereditary substance that is passed to the next generation. cell division is divided into two major types: meiosis and mitosis
uhm!! thanks ,my next question is What are the Features of Prokaryotic cells ?
The four basic features of a cell are as follows: Cells are the basic structural and functional unit of all living things and contains inheritable genetic material. The activity of the cell is carried out by the sub-cellular structures it possesses. Cells possess an outer boundary layer,called a cell membrane ,cytoplasm,which contains organelles ,and genetic material. There is considerable variety among living cells including the function of membranes and sub-cellular structures and the different types of functions the cells out,such as chemical transport,support,and other function. Read more: http://wiki.answers.com/Q/What_are_the_four_basic_features_of_the_cell#ixzz1zfvOJDr3
prokaryotic cell is usual compared with eukaryotic cell these are two major types of cells. Prokaryotic means means "before nucleus" where as eukaryotic cell is "true nucleus" it is believed that prokaryotes evolved into eukaryotes Prokaryotes typically has boundless(having no membrane) organelles. The hereditary substance is free an usually called plasmid and has no endoplasmic reticulum. One of the types of prokaryotes is bacteria. It has much fewer cell organelles compared to eukaryotic cells
*usually
uh, so you mean prokaryotes is lifeless ? and what are the features of Eukaryotic cells ?
noo... they're still living cells... if you see the simple diagram of a bacteria, their DNA is free... Eukaryotic cells are the opposite of prokaryotic cells. They have legions of organelles such as the endoplasmic reticulum. Their hereditary substance is bound in a nucleus. One of the examples of a eukaryotic cell is an animal cell. They are usually bigger than prokaryotes.
what about Vacuoles and Central vacuoles ?
i mean contractile and central vacuoles ?
central vacuoles are usually present in the plant cell. They contain food and stuff. contractile vacuoles perform exocytosis of water. They maintain the ionic and molecular concentration inside the cell.
can you define mitochondria and chloroplasts ?
anaerobic and aerobic too .. please
both are cell organelles. mitochondria is the place for celullar respiration whereas chloroplast's job is to perform photosynthesis. Anaerobic respiration is the type of respiration where it lacks oxygen. Aerobic respiration is the opposite. Anaerobic respiration may produce lactic acid which is poisonous to the body
stroma contains thylakoids so what is thylakoids ?
cytoskeleton,micropilaments,intermediate filaments, microtubules can you explain it too ? please
please..this is my last Q.
thylakoids are interconnected sacs present in the chloroplast. some of them are in the form of granum(stack like structures). the liquid in the chloroplast is called stroma. cytoskeleton are fibres that performs a similar job as the bones in the body. they reinforce the shape of the cell. microfilaments are solid rods made of the protein, actin. they are majorly present in the muscles for contraction etc. intermediate filaments are more permanent compared to microfilaments and microtubules. their work are similar to the cytoskeleton and sometimes present in the nuclear envelope. microtubules, they make the organelles move. microfilaments, microtubules and intermediate filaments are types of cytoskeleton.
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