biology
... - Data analysis 1d, 1g - Development of & evolutionary theories 2b, 2d, 2e - DNA model - Scientists - Macromolecules - Enzymes 3b, 3c ...
... - Data analysis 1d, 1g - Development of & evolutionary theories 2b, 2d, 2e - DNA model - Scientists - Macromolecules - Enzymes 3b, 3c ...
AP Biology - gwbiology
... Phospholipids are an example of amphipatchic molecules; these phospholipids are the most abundant in cell membranes, because the ability to form membranes is part of their molecular structure. Most of the proteins within the cell membrane also have both hydrophobic and hydrophilic regions. 3. How is ...
... Phospholipids are an example of amphipatchic molecules; these phospholipids are the most abundant in cell membranes, because the ability to form membranes is part of their molecular structure. Most of the proteins within the cell membrane also have both hydrophobic and hydrophilic regions. 3. How is ...
Chapter 5
... Passive Processes of Membrane Transport • Biological membranes are selectively permeable: allow some substances to pass, while others are restricted. • Some substances can move by Simple Diffusion: movement from high concentration to low concentration Facilitated Diffusion: passive movement of ...
... Passive Processes of Membrane Transport • Biological membranes are selectively permeable: allow some substances to pass, while others are restricted. • Some substances can move by Simple Diffusion: movement from high concentration to low concentration Facilitated Diffusion: passive movement of ...
7-2.2 - S2TEM Centers SC
... Taxonomy level of indicator: Understand Conceptual Knowledge (2.6-B) Previous/Future Knowledge: In 5th grade (5-2.1), students recalled that the smallest unit of life was the cell and identified its major structures (including cell membrane, cytoplasm, nucleus, and vacuole). In 6th grade students le ...
... Taxonomy level of indicator: Understand Conceptual Knowledge (2.6-B) Previous/Future Knowledge: In 5th grade (5-2.1), students recalled that the smallest unit of life was the cell and identified its major structures (including cell membrane, cytoplasm, nucleus, and vacuole). In 6th grade students le ...
Test 1: Cell Structure and Function
... 18. Which of the following is the best explanation for how the cell builds proteins? a. The mitochondria assemble proteins from instructions they receive from the nucleus. b. The ribosomes assemble proteins from instructions they receive from the nucleus. c. The nucleus contains the instructi ...
... 18. Which of the following is the best explanation for how the cell builds proteins? a. The mitochondria assemble proteins from instructions they receive from the nucleus. b. The ribosomes assemble proteins from instructions they receive from the nucleus. c. The nucleus contains the instructi ...
Biology
... PLANT CELLS contain chloroplasts, a cell wall, & a central vacuole, which are NOT found in animal cells. Chloroplasts are plant cell organelles that contain chlorophyll and the enzymes required for photosynthesis. ...
... PLANT CELLS contain chloroplasts, a cell wall, & a central vacuole, which are NOT found in animal cells. Chloroplasts are plant cell organelles that contain chlorophyll and the enzymes required for photosynthesis. ...
CELLS & the ORGANELLES
... • Rudolf Virchow (1855) Saw dividing cells new living cells come from pre-existingCellscells ...
... • Rudolf Virchow (1855) Saw dividing cells new living cells come from pre-existingCellscells ...
Virus Notes (18.2)
... Viruses __________ the machinery needed to carry out the functions of life. Because viruses are __________, they usually are not placed in the biological classification system. ...
... Viruses __________ the machinery needed to carry out the functions of life. Because viruses are __________, they usually are not placed in the biological classification system. ...
chapter 7 a tour of the cell
... A cell must exchange materials with its environment. Cell volume determines the amount of materials that must be exchanged, while surface area limits how fast exchange can occur. In other words, as cells get larger the need for materials increases faster than the ability to absorb them. ...
... A cell must exchange materials with its environment. Cell volume determines the amount of materials that must be exchanged, while surface area limits how fast exchange can occur. In other words, as cells get larger the need for materials increases faster than the ability to absorb them. ...
Chapt03 Lecture 13ed Pt 3
... • Rough endoplasmic reticulum – studded with ribosomes used to make ____________ • Smooth endoplasmic reticulum – lacks ribosomes but aids in making ______________ and ________ • _____________ – flattened stacks that process, package, and deliver proteins and lipids from the ER ...
... • Rough endoplasmic reticulum – studded with ribosomes used to make ____________ • Smooth endoplasmic reticulum – lacks ribosomes but aids in making ______________ and ________ • _____________ – flattened stacks that process, package, and deliver proteins and lipids from the ER ...
1 Tripoli University Faculty of Science / Zoology Department Lecture
... When substances are allowed to cross the cell membrane with the help of integral proteins (carrier or channel proteins). Two types: facilitated transport and active transport. ...
... When substances are allowed to cross the cell membrane with the help of integral proteins (carrier or channel proteins). Two types: facilitated transport and active transport. ...
Cell Structure 2404
... contain their own set of DNA (genes): passed only from mother to child mtDNA remains unchanged generation after generation except by slow random mutation ...
... contain their own set of DNA (genes): passed only from mother to child mtDNA remains unchanged generation after generation except by slow random mutation ...
Beyond the light microscope
... Leeuwenhoek – the Father of Microbiology The Dutch scientist, Anton van Leeuwenhoek, developed new methods for grinding and polishing tiny lenses about ten years after Hooke’s discoveries. These lenses could magnify objects up to 270 times their normal size. Leeuwenhoek was the first to be able to ...
... Leeuwenhoek – the Father of Microbiology The Dutch scientist, Anton van Leeuwenhoek, developed new methods for grinding and polishing tiny lenses about ten years after Hooke’s discoveries. These lenses could magnify objects up to 270 times their normal size. Leeuwenhoek was the first to be able to ...
III. Membrane Transport (Active and Passive)
... diffusion occurs with no energy being used. Each molecule that enters or leaves must do so through a specific protein channel (100’s in all). c) Osmosis – The movement of ___________ molecules across a cell’s membrane from an area of higher to lower concentration w/o the use of energy. As the amount ...
... diffusion occurs with no energy being used. Each molecule that enters or leaves must do so through a specific protein channel (100’s in all). c) Osmosis – The movement of ___________ molecules across a cell’s membrane from an area of higher to lower concentration w/o the use of energy. As the amount ...
Osmosis Practice Activity
... ________ Transport protein that provides a tube-like opening in the plasma membrane through which particles can diffuse ________ Is used during active transport but not passive transport ________ Process by which a cell takes in material by forming a vacuole around it ________ Particle movement from ...
... ________ Transport protein that provides a tube-like opening in the plasma membrane through which particles can diffuse ________ Is used during active transport but not passive transport ________ Process by which a cell takes in material by forming a vacuole around it ________ Particle movement from ...
biology the origin of the eukaryotic cell
... Had things occurred in this manner, we would expect this “new species” to behave as all others. With each asexual division it would duplicate its DNA and divide it in equal parts, producing daughter cells that are also “diploid.” That situation may have persisted for millions of years allowing for t ...
... Had things occurred in this manner, we would expect this “new species” to behave as all others. With each asexual division it would duplicate its DNA and divide it in equal parts, producing daughter cells that are also “diploid.” That situation may have persisted for millions of years allowing for t ...
section1
... The mechanisms: Cytoskeletal filaments in the axon and cell body, which serve as the rails along which the transport occurs, are linked by proteins to the substances and organelles being moved. ...
... The mechanisms: Cytoskeletal filaments in the axon and cell body, which serve as the rails along which the transport occurs, are linked by proteins to the substances and organelles being moved. ...
Cells 1. Cell Theory a. Three key statements i. All organisms are
... Evolve - over time, organisms with traits best suited to their environment are most successful and pass those traits on. d. Although the cell is the basic unit which makes up all living things, cells do not work alone. i. Similar cells work together as a tissue (e.g., muscle tissue). ii. Collections ...
... Evolve - over time, organisms with traits best suited to their environment are most successful and pass those traits on. d. Although the cell is the basic unit which makes up all living things, cells do not work alone. i. Similar cells work together as a tissue (e.g., muscle tissue). ii. Collections ...
Plants, Animals, and other Weird Cells
... 1. Obtain a slide, cover slip. Clean both the slide and the cover slip. 2. Drop one small drop of water on the slide. 3. Using a clean toothpick, gently scrape the toothpick inside your mouth along the cheek wall. 4. Smear the toothpick across the slide where the water drop is. 5. Add one drop of me ...
... 1. Obtain a slide, cover slip. Clean both the slide and the cover slip. 2. Drop one small drop of water on the slide. 3. Using a clean toothpick, gently scrape the toothpick inside your mouth along the cheek wall. 4. Smear the toothpick across the slide where the water drop is. 5. Add one drop of me ...
Cell Structure pdf
... Mitochondria and chloroplasts are the main energy transformers of cells • Mitochondria and chloroplasts are the organelles that convert energy to forms that cells can use for work. • Mitochondria are the sites of cellular respiration, generating ATP from the catabolism of sugars, fats, and other fue ...
... Mitochondria and chloroplasts are the main energy transformers of cells • Mitochondria and chloroplasts are the organelles that convert energy to forms that cells can use for work. • Mitochondria are the sites of cellular respiration, generating ATP from the catabolism of sugars, fats, and other fue ...
Slide 1
... substrate. (c) Immature porcine NP cells transfected with GFP-actin display distinct actin fibers as the cell spreads and attaches to the underlying stiff BME substrate. On soft BME, NP cells remain rounded and do not have any actin stress fiber formation. Methods for substrate development were adap ...
... substrate. (c) Immature porcine NP cells transfected with GFP-actin display distinct actin fibers as the cell spreads and attaches to the underlying stiff BME substrate. On soft BME, NP cells remain rounded and do not have any actin stress fiber formation. Methods for substrate development were adap ...
Chapter 7
... ___1. Distinguish between magnification and resolving power. ___2. Describe the principles, advantages, and limitations of the light microscope, transmission electron microscope, and scanning electron microscope. ___3. Describe the major steps of cell fractionation and explain why it is a useful tec ...
... ___1. Distinguish between magnification and resolving power. ___2. Describe the principles, advantages, and limitations of the light microscope, transmission electron microscope, and scanning electron microscope. ___3. Describe the major steps of cell fractionation and explain why it is a useful tec ...
1c - Cell Membrane Notes
... – This does not require energy – Particles that are too large to fit between lipids: such as glucose http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter2/animation__how_facilitated_di ffusion_works.html ...
... – This does not require energy – Particles that are too large to fit between lipids: such as glucose http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter2/animation__how_facilitated_di ffusion_works.html ...
1 Introduction to cell biology
... cells ◦ can help us understand the biology of the cell ◦ cell growth is affected by stress and mechanical properties of the substrate the cells are in ◦ understanding mechanics is important for knowing how cells move and for figuring out how to change cell motion ◦ when building/engineering tissues, ...
... cells ◦ can help us understand the biology of the cell ◦ cell growth is affected by stress and mechanical properties of the substrate the cells are in ◦ understanding mechanics is important for knowing how cells move and for figuring out how to change cell motion ◦ when building/engineering tissues, ...
Mitosis
Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.