Cellular Transport - pams-hoey
... • Osmosis is the diffusion of water through a selectively permeable membrane like the cell membrane Water diffuses across a membrane from an area of high concentration (crowded) to an area of low concentration (more space). ...
... • Osmosis is the diffusion of water through a selectively permeable membrane like the cell membrane Water diffuses across a membrane from an area of high concentration (crowded) to an area of low concentration (more space). ...
Transport Across Cell Membranes
... Molecules which cannot pass freely through the phospholipid bilayer are frequently observed diffusing into and out of cells. It is believed that molecules, such as glucose and amino acids, combine to specific carrier proteins. These carriers then change conformation and the molecules are released to ...
... Molecules which cannot pass freely through the phospholipid bilayer are frequently observed diffusing into and out of cells. It is believed that molecules, such as glucose and amino acids, combine to specific carrier proteins. These carriers then change conformation and the molecules are released to ...
4.1 Organization of Life 4.2 The Discovery of Cells
... (usually yellow) is produced at the ends of the stamens on structures called anthers. Anthers are supported by a thread-like structure called a filament. The pistil which is the female plant organ has three parts: stigma, style, and ovary. The stigma is the sticky surface at the top of the pistil; ...
... (usually yellow) is produced at the ends of the stamens on structures called anthers. Anthers are supported by a thread-like structure called a filament. The pistil which is the female plant organ has three parts: stigma, style, and ovary. The stigma is the sticky surface at the top of the pistil; ...
04_Instructor_Guide - Fullfrontalanatomy.com
... 1. ATP functions in cells much like money functions in modern societies. Each holds value that can be generated in one place and “spent” in another. This analogy has been very helpful for many students. 2.Mitochondria and chloroplasts are each wrapped by multiple membranes. In both organelles, the i ...
... 1. ATP functions in cells much like money functions in modern societies. Each holds value that can be generated in one place and “spent” in another. This analogy has been very helpful for many students. 2.Mitochondria and chloroplasts are each wrapped by multiple membranes. In both organelles, the i ...
a PDF version - Jackson County Schools Strategic Waiver School
... curriculum, so both grade levels are taught the same topics by the same 7-8 teaching teams each year.) Prior to these activities, students have been introduced to related science vocabulary, learned about the organelles and looked at cells, such as cheek cells, under the microscope. They have also h ...
... curriculum, so both grade levels are taught the same topics by the same 7-8 teaching teams each year.) Prior to these activities, students have been introduced to related science vocabulary, learned about the organelles and looked at cells, such as cheek cells, under the microscope. They have also h ...
Ch. 5 Cell Transport - Green Local Schools
... higher outside the cell, the water concentration is higher inside the cell. Net movement = Water out of ...
... higher outside the cell, the water concentration is higher inside the cell. Net movement = Water out of ...
cell structure and function
... a) Ribosomes are the sites of protein synthesis in cells. They are composed of protein and ribosomal RNA (rRNA). b) The cytoskeleton is an internal network of fibers that play a role forming a cell’s basic shape. Spherical prokaryotes appear to lack cytoskeletons. ...
... a) Ribosomes are the sites of protein synthesis in cells. They are composed of protein and ribosomal RNA (rRNA). b) The cytoskeleton is an internal network of fibers that play a role forming a cell’s basic shape. Spherical prokaryotes appear to lack cytoskeletons. ...
The Cell Wall
... as motility. Internal movements of organelles are governed by actin filaments and other components of the cytoskeleton. These filaments make an area in which organelles such as chloroplasts can move. Internal movement is known as cytoplasmic streaming. External movement of cells is determined by spe ...
... as motility. Internal movements of organelles are governed by actin filaments and other components of the cytoskeleton. These filaments make an area in which organelles such as chloroplasts can move. Internal movement is known as cytoplasmic streaming. External movement of cells is determined by spe ...
Eukaryotic Cells - Westerville City Schools
... The darker spot inside the nucleus is the nucleolus. If we had a more powerful microscope it would kind of look like an eye inside the nucleus. This organelle is responsible for making ribosomes, but we will discuss those next. 3. What is the genetic material inside a cell’s nucleus? a. Prote ...
... The darker spot inside the nucleus is the nucleolus. If we had a more powerful microscope it would kind of look like an eye inside the nucleus. This organelle is responsible for making ribosomes, but we will discuss those next. 3. What is the genetic material inside a cell’s nucleus? a. Prote ...
chapter07
... Answers may include: monitor (interfaces with the computer’s environment), software (instructions for how to carry out different jobs), CPU (directs the computer's activities), recycle bin or trash can (storage area for wastes), and so on. 2. How do the functions of these computer parts correspond t ...
... Answers may include: monitor (interfaces with the computer’s environment), software (instructions for how to carry out different jobs), CPU (directs the computer's activities), recycle bin or trash can (storage area for wastes), and so on. 2. How do the functions of these computer parts correspond t ...
apoptosis
... all domains derived from proenzyme at cleavage specific sites Highly specific unusual & absolute requirement for cleavage after aspartic acid recognition of at least 4 amino acids NH2 terminals to the cleavage site How do caspases disassemble a cell? It slices, it dices, and that's not all! Se ...
... all domains derived from proenzyme at cleavage specific sites Highly specific unusual & absolute requirement for cleavage after aspartic acid recognition of at least 4 amino acids NH2 terminals to the cleavage site How do caspases disassemble a cell? It slices, it dices, and that's not all! Se ...
presentation source
... – Produces 4 daughter cells – Each daughter cell is haploid – Meiosis plays a key role in generating variation ...
... – Produces 4 daughter cells – Each daughter cell is haploid – Meiosis plays a key role in generating variation ...
Week 8 - Tipp City Schools
... A- NOTES; Video: The Skeletal System: Crash Course A&P #19 A- Study guide O – TSW On a skull or diagram, identify and name the bones of the skull. Describe how the skull of a newborn infant differs from that of an adult, and explain the function of frontaneis. L- Chapter 5The skeletal system: Axial ...
... A- NOTES; Video: The Skeletal System: Crash Course A&P #19 A- Study guide O – TSW On a skull or diagram, identify and name the bones of the skull. Describe how the skull of a newborn infant differs from that of an adult, and explain the function of frontaneis. L- Chapter 5The skeletal system: Axial ...
Cell Membrane and Transport
... The bilayer is a “barrier” that is impermeable to most molecules. ...
... The bilayer is a “barrier” that is impermeable to most molecules. ...
Prokaryotic
... seen 5. Prokaryotic—small, simple, no organelles are seen 6. Eukaryotic—unicellular, organelles present ...
... seen 5. Prokaryotic—small, simple, no organelles are seen 6. Eukaryotic—unicellular, organelles present ...
4.5 Plant and Animal Cells
... A number of small structures are seen within cells when they are observed under a microscope. These small structures are called organelles. Organelles (little organs) have unique functions, but work together to contribute to the cell’s life processes. All plant and animal cells contain a watery flui ...
... A number of small structures are seen within cells when they are observed under a microscope. These small structures are called organelles. Organelles (little organs) have unique functions, but work together to contribute to the cell’s life processes. All plant and animal cells contain a watery flui ...
Cell Growth and Mitosis Notes:
... The first stage, division of the cell _____________, is called _______________. The second stage, division of the cell ______________, is called _______________. Chromosomes ______________ information is passed from one generation to the next on __________________. Before cell division, each chromos ...
... The first stage, division of the cell _____________, is called _______________. The second stage, division of the cell ______________, is called _______________. Chromosomes ______________ information is passed from one generation to the next on __________________. Before cell division, each chromos ...
Chapter 4
... outermost region; a hook attaches to the filament; the basal body, which anchors the flagellum to the cell wall and plasma membrane The basal body is a small central rod inserted into a series of rings In gram negative bacteria, there are two pair of rings In gram positive bacteria, only the inner p ...
... outermost region; a hook attaches to the filament; the basal body, which anchors the flagellum to the cell wall and plasma membrane The basal body is a small central rod inserted into a series of rings In gram negative bacteria, there are two pair of rings In gram positive bacteria, only the inner p ...
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.