“Translation” means : Ribosomes in the cell cytoplasm read the
... will match up with a new molecule : tRNA (transfer RNA). Each transfer RNA can attach to one kind of amino acid. The bottom 3 bases (the tRNA’s “anticodon”) make sure it can only attach to one specific codon. Most amino acids have more than one possible codon (they have the first two bases the same ...
... will match up with a new molecule : tRNA (transfer RNA). Each transfer RNA can attach to one kind of amino acid. The bottom 3 bases (the tRNA’s “anticodon”) make sure it can only attach to one specific codon. Most amino acids have more than one possible codon (they have the first two bases the same ...
Chloroplasts and Mitochondria
... mitochondria of the cell. This releases energy (ATP) for the cell. The more active a cell (such as a muscle cell), the more mitochondria it will have. The mitochondria are bout the size of a bacterial cell and are often peanut-shaped. Mitochondria have their own DNA and a double membrane like the nu ...
... mitochondria of the cell. This releases energy (ATP) for the cell. The more active a cell (such as a muscle cell), the more mitochondria it will have. The mitochondria are bout the size of a bacterial cell and are often peanut-shaped. Mitochondria have their own DNA and a double membrane like the nu ...
Lesson Overview
... The Nucleus DNA in the nucleus is usually seen as Chromatin - long, thin strings of DNA. When a cell divides, its chromatin condenses into shorter, thicker chromosomes. Chromosomes contain the genetic information (DNA) passed to the offspring. ...
... The Nucleus DNA in the nucleus is usually seen as Chromatin - long, thin strings of DNA. When a cell divides, its chromatin condenses into shorter, thicker chromosomes. Chromosomes contain the genetic information (DNA) passed to the offspring. ...
Chapter 1 Notes
... A cell’s genetic material is called its genome - prokaryote = single long DNA strand - eukaryote = number of DNA molecules ...
... A cell’s genetic material is called its genome - prokaryote = single long DNA strand - eukaryote = number of DNA molecules ...
Membrane protein structure and assembly
... Heijne Nature Reviews Molecular Cell Biology 7, 909–918 (December 2006) | doi:10.1038/nrm2063 ...
... Heijne Nature Reviews Molecular Cell Biology 7, 909–918 (December 2006) | doi:10.1038/nrm2063 ...
Bacterial Anatomy
... Principal sites of Respiratory enzymes Analogous to mitochondria in Eukaryotes ...
... Principal sites of Respiratory enzymes Analogous to mitochondria in Eukaryotes ...
Special Components of Gram
... The outer membrane is chemically distinct from all other biological membranes. It is a bilayered structure ; it has special channels, consisting of protein molecules called porins, that permit the passive diffusion of low-molecular-weight hydrophilic compounds like sugars, amino acids, and certain i ...
... The outer membrane is chemically distinct from all other biological membranes. It is a bilayered structure ; it has special channels, consisting of protein molecules called porins, that permit the passive diffusion of low-molecular-weight hydrophilic compounds like sugars, amino acids, and certain i ...
Cell Cycle - Chapel Hill ISD
... • Growth and development of organism from an egg to an adult require that cells divide and ...
... • Growth and development of organism from an egg to an adult require that cells divide and ...
Notes
... An atom has two areas – the nucleus and the energy levels The nucleus is the center of the atom (just like the nucleus of a cell…) The nucleus holds most of the atom’s mass The energy levels (also called electron clouds) are filled with particles orbiting the atom. These are fairly distant from the ...
... An atom has two areas – the nucleus and the energy levels The nucleus is the center of the atom (just like the nucleus of a cell…) The nucleus holds most of the atom’s mass The energy levels (also called electron clouds) are filled with particles orbiting the atom. These are fairly distant from the ...
The Cell in Its Environment
... • How do most small molecules cross the cell membrane? • Why is osmosis important to cells? • What is the difference between passive transport and active transport? ...
... • How do most small molecules cross the cell membrane? • Why is osmosis important to cells? • What is the difference between passive transport and active transport? ...
No. 24
... release of the hormones of the pituitary gland and thus, to a large extent, it controls the endocrine system. (2) The hypothalamus controls many vital processes, most of them associated with the autonomic nervous system. Some of the hyopothalamic nuclei have been shown experimentally to regulate sym ...
... release of the hormones of the pituitary gland and thus, to a large extent, it controls the endocrine system. (2) The hypothalamus controls many vital processes, most of them associated with the autonomic nervous system. Some of the hyopothalamic nuclei have been shown experimentally to regulate sym ...
Organelle Funtion
... • “Powerhouse” of the cell • Generate cellular energy (ATP) • More active cells like muscle cells have MORE mitochondria • Both plants & animal cells have mitochondria • Site of CELLULAR ...
... • “Powerhouse” of the cell • Generate cellular energy (ATP) • More active cells like muscle cells have MORE mitochondria • Both plants & animal cells have mitochondria • Site of CELLULAR ...
Ch - cloudfront.net
... Objective #1: Know that proteins differ in the number and sequence of amino acids and know why different proteins have different shapes and properties -----------------------------------------------------------------------------------------------------------------------• genes: _____________________ ...
... Objective #1: Know that proteins differ in the number and sequence of amino acids and know why different proteins have different shapes and properties -----------------------------------------------------------------------------------------------------------------------• genes: _____________________ ...
The Cell Membrane
... phospholipid will orient itself so that it is as close as possible to water molecules. The lipid tails are hydrophobic meaning “water fearing.” ...
... phospholipid will orient itself so that it is as close as possible to water molecules. The lipid tails are hydrophobic meaning “water fearing.” ...
Diencephalon
... • Receives fibres from stria medullares, habenular nuclei & post. Com. • Inhibits gonadal function. • After 16 yrs., calcerous bodies present which are visible in skull x-rays. • Identification & position of pineal gland in skull films. ...
... • Receives fibres from stria medullares, habenular nuclei & post. Com. • Inhibits gonadal function. • After 16 yrs., calcerous bodies present which are visible in skull x-rays. • Identification & position of pineal gland in skull films. ...
Bacterial Morphology Arrangement
... cause diseases due to this. If mutant (fimbriae) not virulent. Prevent phagocytosis. ...
... cause diseases due to this. If mutant (fimbriae) not virulent. Prevent phagocytosis. ...
Cell Membrane - Campbell County Schools
... Isotonic: concentrations of the water are the same both inside and outside the cell; water enters and leaves cell at same rate; cell size doesn’t change Hypotonic: lower water concentration inside the cell than outside; water enters the cell; cell swells Hypertonic: lower water concentration outsi ...
... Isotonic: concentrations of the water are the same both inside and outside the cell; water enters and leaves cell at same rate; cell size doesn’t change Hypotonic: lower water concentration inside the cell than outside; water enters the cell; cell swells Hypertonic: lower water concentration outsi ...
NNF1 is an essential yeast gene required for proper spindle
... multiple polypeptides, making it likely that signals on both RNA and protein are required for nuclear export (Fischer et al., 1996). Recently a receptor for protein export was also identified in human cells as Rab1, and in yeast as Rip1. Both Rab1 and Rip1 interact with a specific 10 amino acid nucl ...
... multiple polypeptides, making it likely that signals on both RNA and protein are required for nuclear export (Fischer et al., 1996). Recently a receptor for protein export was also identified in human cells as Rab1, and in yeast as Rip1. Both Rab1 and Rip1 interact with a specific 10 amino acid nucl ...
Chapter 4
... 7. A distinctive feature of eukaryotes is the organization of their chromosomal DNA which is tightly packaged with proteins into a membrane-bound structure called a _______. 8. The delivery system of eukaryotic cells called the ______ complex can collect, package, modify, and transport molecules. 9. ...
... 7. A distinctive feature of eukaryotes is the organization of their chromosomal DNA which is tightly packaged with proteins into a membrane-bound structure called a _______. 8. The delivery system of eukaryotic cells called the ______ complex can collect, package, modify, and transport molecules. 9. ...
lecture 4, tour of the cell, 030309c
... The plasma membrane regulates the traffic of molecules moving into and out of the cell. It is selectively permeable—that is, the membrane allows some molecules to pass through while preventing the passage of others. Transport proteins embedded in the plasma membrane allow the passage of other molecu ...
... The plasma membrane regulates the traffic of molecules moving into and out of the cell. It is selectively permeable—that is, the membrane allows some molecules to pass through while preventing the passage of others. Transport proteins embedded in the plasma membrane allow the passage of other molecu ...
NOTE SET 9 - George Mason University
... • Composed of alternating exons and introns • Exons • expressed regions • end up in final mRNA • Introns • intervening sequences • removed from mRNA Fig 17.10 RNA splicing • Accomplished by a protein/RNA complex called - spliceosome – consists of a variety of proteins and several small nuclear ribon ...
... • Composed of alternating exons and introns • Exons • expressed regions • end up in final mRNA • Introns • intervening sequences • removed from mRNA Fig 17.10 RNA splicing • Accomplished by a protein/RNA complex called - spliceosome – consists of a variety of proteins and several small nuclear ribon ...
Mitosis PPT
... A cell’s genetic material is called its genome - prokaryote = single long DNA strand - eukaryote = number of DNA molecules ...
... A cell’s genetic material is called its genome - prokaryote = single long DNA strand - eukaryote = number of DNA molecules ...
The cell theory states
... of cork and saw billions of tiny pores that he said looked like the walled compartments of a honeycomb. Because of this association Hooke called them cells, the name they still have. The cell theory is a widely accepted explanation of the relationship between cells and living things. The cell theory ...
... of cork and saw billions of tiny pores that he said looked like the walled compartments of a honeycomb. Because of this association Hooke called them cells, the name they still have. The cell theory is a widely accepted explanation of the relationship between cells and living things. The cell theory ...
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.