Comparing Prokaryotic and Eukaryotic Cells
... attach to surfaces in its environment. Some prokaryotes have agella, pili, or mbriae. Flagella are used for locomotion, while most pili are used to exchange genetic material during a type of reproduction called conjugation. ...
... attach to surfaces in its environment. Some prokaryotes have agella, pili, or mbriae. Flagella are used for locomotion, while most pili are used to exchange genetic material during a type of reproduction called conjugation. ...
Cells - Holding-LivingEnvironment
... Evidence – both contain their own DNA and can reproduce themselves like bacteria, similar in size to bacteria, have same metabolic machinery as bacteria ...
... Evidence – both contain their own DNA and can reproduce themselves like bacteria, similar in size to bacteria, have same metabolic machinery as bacteria ...
2nd lecture Cell Biology Classification of cells: Prokaryotic cells
... 2) Indeed, bacteria can be considered as a typically prokaryotic cell, which contain essentially no organelles not even a nucleus to hold its DNA. 3) Most prokaryotes range between 1 µm to 10 µm, but they can vary in size from 0.2 µm to 750 µm. 4) They belong to two taxonomic domains, which are the ...
... 2) Indeed, bacteria can be considered as a typically prokaryotic cell, which contain essentially no organelles not even a nucleus to hold its DNA. 3) Most prokaryotes range between 1 µm to 10 µm, but they can vary in size from 0.2 µm to 750 µm. 4) They belong to two taxonomic domains, which are the ...
Cells Test w/answers
... C. Salt will be pumped out of the paramecium by the vacuole D. Salt will be pumped into the paramecium by the vacuole 2. The cellular process known as the sodium-potassium pump was discovered in the 1950s by Jens Christian Skou, a Danish scientist. This process is a form of active transport that mov ...
... C. Salt will be pumped out of the paramecium by the vacuole D. Salt will be pumped into the paramecium by the vacuole 2. The cellular process known as the sodium-potassium pump was discovered in the 1950s by Jens Christian Skou, a Danish scientist. This process is a form of active transport that mov ...
2. Cell Structure I
... Slide 447: Duodenum and Slide 32409: Rat Intestine (toluidine blue) o Toluidine blue stain most proteins and nucleic acid- density, shape, size o Lightly stained – brush border, basement membrane, mucus droplets, erythrocytes o Darkly stained – cytoplasm, mitochondria, nuclei (have both light and da ...
... Slide 447: Duodenum and Slide 32409: Rat Intestine (toluidine blue) o Toluidine blue stain most proteins and nucleic acid- density, shape, size o Lightly stained – brush border, basement membrane, mucus droplets, erythrocytes o Darkly stained – cytoplasm, mitochondria, nuclei (have both light and da ...
MRL 1.2 NOTES - Cells, Eukaryotic, Prokaryotic, Ultrastructure
... • Drawing of the ultrastructure of prokaryotic cells based on electron micrographs: cell wall, pili and flagella, and plasma membrane enclosing cytoplasm that contains 70S ribosomes and a nucleoid with naked DNA. • Drawing of the ultrastructure of eukaryotic cells based on electron micrographs: plas ...
... • Drawing of the ultrastructure of prokaryotic cells based on electron micrographs: cell wall, pili and flagella, and plasma membrane enclosing cytoplasm that contains 70S ribosomes and a nucleoid with naked DNA. • Drawing of the ultrastructure of eukaryotic cells based on electron micrographs: plas ...
Biology EOC Review
... 2) Lipids – composed of fatty acids joined to glycerol and sometimes phosphate groups, can also include the steroids 3) Proteins – composed of amino acids (20 different types) – do most of the work in organisms and are major structural components 4) Nucleic Acids – are composed of nucleotides – eith ...
... 2) Lipids – composed of fatty acids joined to glycerol and sometimes phosphate groups, can also include the steroids 3) Proteins – composed of amino acids (20 different types) – do most of the work in organisms and are major structural components 4) Nucleic Acids – are composed of nucleotides – eith ...
cell structure and function study guide
... 6. What is the term for the jelly-like substance that is contained inside the cell membrane? 7. Unlike a eukaryotic cell, a prokaryotic cell does not have _______________________________. 8. Specialized structures that work together inside a cell are called __________________________________. 9. Wha ...
... 6. What is the term for the jelly-like substance that is contained inside the cell membrane? 7. Unlike a eukaryotic cell, a prokaryotic cell does not have _______________________________. 8. Specialized structures that work together inside a cell are called __________________________________. 9. Wha ...
How is a Cell Like a Factory? (An Introduction to Cell Organelles
... along the line, and each worker does his or her part and then moves the work along. In cells, the endoplasmic reticulum is a series of pathways through the cell. It acts as a transport system, work system, and support system. It consists of thin membranes that fold in on themselves and create pathwa ...
... along the line, and each worker does his or her part and then moves the work along. In cells, the endoplasmic reticulum is a series of pathways through the cell. It acts as a transport system, work system, and support system. It consists of thin membranes that fold in on themselves and create pathwa ...
CELL_PARTS
... • Holds contents of cell inside (like skin) • Keeps harmful substances out • Controls what enters and leaves • Water, oxygen, and nutrients are allowed to enter • Waste products are allowed to exit ...
... • Holds contents of cell inside (like skin) • Keeps harmful substances out • Controls what enters and leaves • Water, oxygen, and nutrients are allowed to enter • Waste products are allowed to exit ...
What you will learn today . . .
... by adding several glass lenses; this revelation helped develop the first microscopes. ...
... by adding several glass lenses; this revelation helped develop the first microscopes. ...
Biology EOC Review - Mr. Smith’s Science Page
... 2) Lipids – composed of fatty acids joined to glycerol and sometimes phosphate groups, can also include the steroids 3) Proteins – composed of amino acids (20 different types) – do most of the work in organisms and are major structural components 4) Nucleic Acids – are composed of nucleotides – eith ...
... 2) Lipids – composed of fatty acids joined to glycerol and sometimes phosphate groups, can also include the steroids 3) Proteins – composed of amino acids (20 different types) – do most of the work in organisms and are major structural components 4) Nucleic Acids – are composed of nucleotides – eith ...
Cell - structural and functional unit of life -
... When solutions of different osmolarity are separated by membrane permeable to all molecules, both solutes and water cross membrane until equilibrium reached When solutions of different osmolarity are separated by membrane impermeable to ...
... When solutions of different osmolarity are separated by membrane permeable to all molecules, both solutes and water cross membrane until equilibrium reached When solutions of different osmolarity are separated by membrane impermeable to ...
Lab. 2 Cell Division 1. Mitosis Division
... The advantage of having three phases in interphase is that it allows time to check that things are happening as they should. Three checkpoints exist during interphase, during which the cell makes sure that everything has gone as planned and, if needed, fixes errors. The G1-S checkpoint at the end of ...
... The advantage of having three phases in interphase is that it allows time to check that things are happening as they should. Three checkpoints exist during interphase, during which the cell makes sure that everything has gone as planned and, if needed, fixes errors. The G1-S checkpoint at the end of ...
Naked Egg Lab Day 2
... material called peptidoglycan which is part protein and part carbohydrate. The cell has no nucleus. The only organelles it has are ribosomes, cytoplasm, cell membrane. What type of cell is it? 3. Please describe the function of the cell wall and explain which types of cells it can be found in. 4. Pl ...
... material called peptidoglycan which is part protein and part carbohydrate. The cell has no nucleus. The only organelles it has are ribosomes, cytoplasm, cell membrane. What type of cell is it? 3. Please describe the function of the cell wall and explain which types of cells it can be found in. 4. Pl ...
The organization of animal and plant cells
... big spongy mess. This is because of a unique cellular structure called the cell wall. The cell wall is a rigid structure outside of the cell membrane composed mainly of the polysaccharide cellulose. As pictured at left, the cell wall gives the plant cell a defined shape which helps support individu ...
... big spongy mess. This is because of a unique cellular structure called the cell wall. The cell wall is a rigid structure outside of the cell membrane composed mainly of the polysaccharide cellulose. As pictured at left, the cell wall gives the plant cell a defined shape which helps support individu ...
cell membrane - The Wesley School
... modify/transport proteins rough ER ____________________ Contain DNA; control center nucleus ___________________ cytoskeleton __________________ ...
... modify/transport proteins rough ER ____________________ Contain DNA; control center nucleus ___________________ cytoskeleton __________________ ...
Review Packet #1
... (A, P) Ribosomes - are small, dense granules (look like tiny circles on the diagrams) found free in the cytoplasm and on the rough endoplasmic reticulum. Ribosomes are composed mainly of RNA (rRNA). They are the centers of protein synthesis in the cell and consist of large and small subunits that jo ...
... (A, P) Ribosomes - are small, dense granules (look like tiny circles on the diagrams) found free in the cytoplasm and on the rough endoplasmic reticulum. Ribosomes are composed mainly of RNA (rRNA). They are the centers of protein synthesis in the cell and consist of large and small subunits that jo ...
Structure and Function Notes #1
... • In the cytoplasm of animal cells there are numerous protein filaments that give shape and support to the cell called the cytoskeleton. (like our skeletal system) • The cytoskeleton is also involved in cellular movement and parts/materials moving inside of the cell. • There are four major types of ...
... • In the cytoplasm of animal cells there are numerous protein filaments that give shape and support to the cell called the cytoskeleton. (like our skeletal system) • The cytoskeleton is also involved in cellular movement and parts/materials moving inside of the cell. • There are four major types of ...
Cell nucleus
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nucleoskeleton (which includes nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. The interior of the nucleus does not contain any membrane-bound sub compartments, its contents are not uniform, and a number of sub-nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes. After being produced in the nucleolus, ribosomes are exported to the cytoplasm where they translate mRNA.