Answer Key: What do I need to know for the test
... 3. Function (jobs) of the proteins: a. receptor- send messages or signals b. channel- move materials in and out of cell c. marker- I.D. tag , identify the cell 4. Diffusion is the movement of materials (ions, molecules, gases) from an area of high conc. to low conc. Some examples of diffusion are: b ...
... 3. Function (jobs) of the proteins: a. receptor- send messages or signals b. channel- move materials in and out of cell c. marker- I.D. tag , identify the cell 4. Diffusion is the movement of materials (ions, molecules, gases) from an area of high conc. to low conc. Some examples of diffusion are: b ...
Chapter 1 Answers
... the ward. His work was ignored by others, and it wasn’t until Lister and Pasteur in the 1860s and 1870s experimented with bacteria (still invisible as individuals, but whose presence could be detected) that handwashing in hospitals began to be more common, although it is still a problem today. 2. Fi ...
... the ward. His work was ignored by others, and it wasn’t until Lister and Pasteur in the 1860s and 1870s experimented with bacteria (still invisible as individuals, but whose presence could be detected) that handwashing in hospitals began to be more common, although it is still a problem today. 2. Fi ...
Overview of Cell Organelles
... Centrosome/Centrioles What is the structure? • Centrioles are a construction of microtubules that make up the ...
... Centrosome/Centrioles What is the structure? • Centrioles are a construction of microtubules that make up the ...
September 25 AP Biology - John D. O`Bryant School of Math & Science
... 4. Large numbers of ribosomes are present in cells that specialize in producing which of the ...
... 4. Large numbers of ribosomes are present in cells that specialize in producing which of the ...
File
... have a lower concentration of solutes (dissolved substances) and a higher concentration of water than inside the cell ...
... have a lower concentration of solutes (dissolved substances) and a higher concentration of water than inside the cell ...
Unit 2 Bio Study Guide
... 13. Where is energy stored and created in the cell? ____________________________________ 14. Which organelles help a plant during photosynthesis? _______________________________ 15. Which organelle is most responsible for maintaining homeostasis? __________________________ 16. Describe colonial orga ...
... 13. Where is energy stored and created in the cell? ____________________________________ 14. Which organelles help a plant during photosynthesis? _______________________________ 15. Which organelle is most responsible for maintaining homeostasis? __________________________ 16. Describe colonial orga ...
Cell Analogy Webquest
... Take notes on the organelles. You will not have enough time to explore the sites to look at other organelles but you can certainly visit these sites later on your own time. Day 3: Meet in your groups. Use a piece of scrap paper to plan your Analogy Poster. Decide what will represent each of the part ...
... Take notes on the organelles. You will not have enough time to explore the sites to look at other organelles but you can certainly visit these sites later on your own time. Day 3: Meet in your groups. Use a piece of scrap paper to plan your Analogy Poster. Decide what will represent each of the part ...
2013 cell types organelles Notes Pre AP(rev) 2
... These two organelles (mitochondria and chloroplast) are thought once be their own prokaryotic cell living inside a larger host cell…….these “prokaryotes” provided nutrients/oxygen to the host and in turn got a safe place to live. ...
... These two organelles (mitochondria and chloroplast) are thought once be their own prokaryotic cell living inside a larger host cell…….these “prokaryotes” provided nutrients/oxygen to the host and in turn got a safe place to live. ...
Cells Review Ppt
... • Hypertonic - term used when the extracellular solute concentration is greater than the cell resulting in movement of water out of the cell causing cell shrinkage or crenation • Hypotonic - term used when the extracellular solute concentration is less than the cell resulting in movement of water in ...
... • Hypertonic - term used when the extracellular solute concentration is greater than the cell resulting in movement of water out of the cell causing cell shrinkage or crenation • Hypotonic - term used when the extracellular solute concentration is less than the cell resulting in movement of water in ...
File
... membrane called the nuclear membrane or nuclear envelope. Within the nucleus are the chromosomes, which contain the genetic material. One of the responsibilities of the nucleus is to make sure that a copy of each chromosome is replicated during the process of mitosis. Also found within the nucleus i ...
... membrane called the nuclear membrane or nuclear envelope. Within the nucleus are the chromosomes, which contain the genetic material. One of the responsibilities of the nucleus is to make sure that a copy of each chromosome is replicated during the process of mitosis. Also found within the nucleus i ...
AP Biology Reading Guide Chapter 6
... 34. Recall the relationship of structure to function. Why is the inner membrane of the mitochondria high folded? What role do all the individual thylakoid membranes serve? (Same answer for both questions.) Chloroplasts and mitochondria both have ribosomes and their own DNA. You will learn later abou ...
... 34. Recall the relationship of structure to function. Why is the inner membrane of the mitochondria high folded? What role do all the individual thylakoid membranes serve? (Same answer for both questions.) Chloroplasts and mitochondria both have ribosomes and their own DNA. You will learn later abou ...
Cell Structure, Function and Transport
... 1. The membrane allows nutrients to enter and leave no matter the external conditions 2. Allows waste to leave the cell and nutrients to enter the cell ...
... 1. The membrane allows nutrients to enter and leave no matter the external conditions 2. Allows waste to leave the cell and nutrients to enter the cell ...
cytoplasm
... A. Which organelle produces proteins that will be exported from the cell? B. Which organelle contains digestive enzymes? C. Which site acts as a protein packaging and distribution center? ...
... A. Which organelle produces proteins that will be exported from the cell? B. Which organelle contains digestive enzymes? C. Which site acts as a protein packaging and distribution center? ...
Eukaryotic Cell Parts
... All living things are made of one or more cells Cells are the basic units of structure and function in organisms All cells arise from existing cells ...
... All living things are made of one or more cells Cells are the basic units of structure and function in organisms All cells arise from existing cells ...
Chapter 5
... 2. Facilitated diffusion: (larger polar molecules) membrane is impermeable, so even if they want to travel down the concentration gradient they can’t without help from a membrane channel (transport protein): Figure 5.7b ...
... 2. Facilitated diffusion: (larger polar molecules) membrane is impermeable, so even if they want to travel down the concentration gradient they can’t without help from a membrane channel (transport protein): Figure 5.7b ...
Plant Cell Structures
... happens in a cell, the nucleus knows about it. It is only present in eukaryotic cells (because prokaryotic cells don’t have a nucleus) and there is only one nucleus in each cell. Usually, it is round and its the largest organelle in the cell. It is surrounded by a membrane, called the nuclear envelo ...
... happens in a cell, the nucleus knows about it. It is only present in eukaryotic cells (because prokaryotic cells don’t have a nucleus) and there is only one nucleus in each cell. Usually, it is round and its the largest organelle in the cell. It is surrounded by a membrane, called the nuclear envelo ...
The Cell Membrane
... The parts of a cell work together to carry out all of the functions of life. If any of those parts change or malfunction, the entire system may not work as well, or at all. Every cell part plays an important part ...
... The parts of a cell work together to carry out all of the functions of life. If any of those parts change or malfunction, the entire system may not work as well, or at all. Every cell part plays an important part ...
Cell Cycle Check
... 1) Identify the stage of the cell cycle for each diagram using the words in the word bank. 2) Place a * next to each stage of mitosis. (0.5 pts each) 3) Sequence the stages. (1 pt each) ...
... 1) Identify the stage of the cell cycle for each diagram using the words in the word bank. 2) Place a * next to each stage of mitosis. (0.5 pts each) 3) Sequence the stages. (1 pt each) ...
Cell Organelles - Mrs. Gallegos Website
... Structure: • Double membrane with a series of folds called cristae. Function: • Cellular respiration- chemical energy from food converted into usable energy for cell ...
... Structure: • Double membrane with a series of folds called cristae. Function: • Cellular respiration- chemical energy from food converted into usable energy for cell ...
Plant Cells (The Basics)
... sparse collection of other organelles . Companion cell provides energy – so-named because end walls are perforated - allows cytoplasmic connections between vertically-stacked cells . – conducts sugars and amino acids - from the leaves, to the rest of the plant ...
... sparse collection of other organelles . Companion cell provides energy – so-named because end walls are perforated - allows cytoplasmic connections between vertically-stacked cells . – conducts sugars and amino acids - from the leaves, to the rest of the plant ...
CELLS: The Living Units
... • Voltage (electrical potential) across a membrane • Resting membrane potential – the point where K+ potential is balanced by the membrane potential • range -50 to -100 millivolts (mV) • Cells become polarized • Results from Na+ and K+ concentration gradients across the membrane • Steady state – mai ...
... • Voltage (electrical potential) across a membrane • Resting membrane potential – the point where K+ potential is balanced by the membrane potential • range -50 to -100 millivolts (mV) • Cells become polarized • Results from Na+ and K+ concentration gradients across the membrane • Steady state – mai ...
Cytoplasmic streaming
Cytoplasmic streaming, also called protoplasmic streaming and cyclosis, is the directed flow of cytosol (the liquid component of the cytoplasm) and organelles around large fungal and plant cells through the mediation of actin. This movement aids in the delivery of organelles, nutrients, metabolites, genetic information, and other materials to all parts of the cell. Cytoplasmic streaming occurs along actin filaments in the cytoskeleton of the cell.Cytoplasmic streaming was first discovered in the 1830s. The scientific breakthrough assisted scientists in developing an understanding of the different roles of cells and how they function as the basic operating systems of life.This process occurs through the operation of motor proteins called myosins.These proteins use energy of adenosine triphosphate (ATP) to act as a molecular motor, which slides along actin filaments. This works in a manner that tows the organelles and other cytoplasmic contents in the same direction. Myosin proteins consist of two conjoined proteins. If one protein remains attached to the substrate, the substance acted upon by the protein, such as a microfilament, has the ability to move organelles through the cytoplasm.The green alga genus Chara and other genera in the Division Charophyta, such as Coleochaete, are thought to be the closest relatives of land plants. These haploid organisms contain some of the largest plant cells on earth, a single cell of which can reach up to 10 cm in length. The large size of these cells demands an efficient means to distribute resources, which is enabled via cytoplasmic streaming.Cytoplasmic streaming is strongly dependent upon intracellular pH and temperature. It has been observed that the effect of temperature on cytoplasmic streaming created linear variance and dependence at different high temperatures in comparison to low temperatures. This process is complicated, with temperature alterations in the system increasing its efficiency, with other factors such as the transport of ions across the membrane being simultaneously affected. This is due to cells homeostasis depending upon active transport which may be affected at some critical temperatures.In plant cells, chloroplasts may be moved around with the stream, possibly to a position of optimum light absorption for photosynthesis. The rate of motion is usually affected by light exposure, temperature, and pH levels.In reference to pH, because actin and myosin are both proteins, strong dependence on pH is expected. The optimal pH at which cytoplasmic streaming is highest, is achieved at neutral pH and decreases at both low and high pH.The flow of cytoplasm may be stopped by:Adding Lugol's iodine solutionAdding Cytochalasin D (dissolved in dimethyl sulfoxide)↑ ↑ ↑ ↑ ↑ ↑