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CHAPTER 3  CELLS  unit of life
CHAPTER 3 CELLS unit of life

... The cell membrane separates the inside of the cell from its environment. Intracellular refers to things that are inside the cell. Extracellular refers to things that are outside of the cell. Protein channels are openings in the cell membrane to allow transport of chemicals through the membrane. Cell ...
biology - TeacherWeb
biology - TeacherWeb

... ____ Identify the major parts of the brain on diagrams or models Essential Question: ...
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... 19. How does Paramecium osmoregulate? You may not know it, but this is something you really want to know. In fact, whether you care or not, you’ve reached a crossroads in your journey to be as awesome as me. Choose the right path and you might just walk the rice paper without leaving a trace. ...
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Review Sheet for Lecture Exam 2 Chapter Five Structure and

... 4. Structure and function of nucleic acids (DNA and RNA). How does DNA differ from RNA? What are the bases in DNA and RNA? What are purines and pyrimidines? What are the base pairing rules? What does it mean when we talk about the 5’3’ and the 3’5’ direction of DNA? What is the overall process of pr ...
Cell Review Answers
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... just ingested. The lysosome fuses with the vesicle and release its hydrolytic enzymes. The enzymes break down the bacterium. 9. What is the role of vesicles in the cell? Vesicles are used to store and transport materials around the cell. 10. Describe what happens to a plant if there is not enough wa ...
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... The membrane model, which had been devoloped by Danielli & Davson, had been accepted by most scientist for many years. But in 1972 Singer & Nicolson proposed their own model, which they called the “fluid mosaic model.“ The proteins play an important role in their model. In their article they say: ...
Cell Structure and Function
Cell Structure and Function

... • Surface area represents the “access” available to and from a cell for supplies. • Volume represents how much has to be supplied. • The more “access” you have to supply each unit of volume, the more efficient the cell is. ...
Morphology of Prokaryotic Cells
Morphology of Prokaryotic Cells

... 1. Thick , highly org anized, and solidly fixed to the cell w all it is referred to as a capsule. 2. Thin lay er, unorga nized, loose ly held to the cell wall it is referred to as a slime layer. B. Function: 1. attachment, Allows the bacteria to attach to surfaces in its natu ral en viron me nt. 2. ...
The Cell
The Cell

... bilayer (with pores) Bilayers surround the fluid part of nucleus (nucleoplasm) Continuous with the endoplasmic reticulum ...
Detecting and responding
Detecting and responding

... involves the binding of extracellular signalling molecules, like hormones and neurotransmitters, to receptors that face outwards from the membrane and trigger events inside the cell. ...
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... • Protein kinases transfer phosphates from ATP to protein, a process called phosphorylation • Protein phosphatases remove the phosphates from proteins, a process called dephosphorylation ...
Plant Cell - Effingham County Schools
Plant Cell - Effingham County Schools

... •Leucoplasts store starch and other molecules for the cell. Many in potato cells. Process - Storage ...
ACHAEAN- One of two prokaryote domains that includes organisms
ACHAEAN- One of two prokaryote domains that includes organisms

... ACHAEAN- One of two prokaryote domains that includes organisms with different plasma membranes and ribosomes than bacteria BACTERIA- One of two prokaryote domains that includes organisms with different plasma membranes and ribosomes than archaeans BIOLOGY- the study of life, living things, and the c ...
Plant Hormones
Plant Hormones

... The pancreas is an endocrine gland which produces hormones which regulate blood glucose (sugar) levels An increase in blood sugar level triggers the release of the hormone insulin by the pancreas the hormone insulin lowers blood sugar level restoring the body to its original blood glucose level in t ...
Sensory Receptors
Sensory Receptors

... Sensory neuron (b) Taste buds ...
Structure and Function of the Cell
Structure and Function of the Cell

... How are cells limited in size? (What is the “trend”) ...
Chapter 7 Cell Structure and Function
Chapter 7 Cell Structure and Function

... defect that prevents the formation of an essential enzyme that breaks down lipids These lipids build up in the body and can cause nerve damage; prognosis is not good ...
C22 Cancer and the Immune System
C22 Cancer and the Immune System

... cells is regulated • Cells that do not respond to normal growth controls can expand clonally -> form a tumor (neoplasm) – Benign tumors – Malignant tumors (cancer)  metastasis » 1° tumor  2° tumor ...
Ch 6 Organelles
Ch 6 Organelles

... h. __________________ Connects the cytoplasm of one plant cell to another i. __________________Packages proteins for transport out of the cell j. __________________The site of cellular respiration k. __________________Composed mainly of cellulose l. __________________Synthesizes lipids m. __________ ...
Cell Division - cloudfront.net
Cell Division - cloudfront.net

... ...
Biotechnology - Elgin Local Schools
Biotechnology - Elgin Local Schools

... - Large macromolecules found in the nucleus of cells - Contain genetic information - Deoxyribonucleic acid (DNA) - Ribonucleic Acid (RNA) - Four bases: Adenine (A), thymine (T), cytosine (C), Guanine (G) ...
Functions in Alertness and SLEEP WAKE Cycles
Functions in Alertness and SLEEP WAKE Cycles

... 2. Found at neuromuscular junction ii. Muscarinic 1. Metabotropic, G protein – coupled receptor 2. Found on smooth and cardiac fibers II. Second Messenger systems a. 4 main types of changes occur with the activation of metabotropic receptors i. Opening specific ion channels through the postsynaptic ...
Ch. 3 Cells
Ch. 3 Cells

... Cells develop into different types of cells with specialized functions via cell differentiation; shows genetic control of nucleus as some genes are turned on while others are turned off ...
4.4. INTRODUCING PROKARYOTIC CELLS
4.4. INTRODUCING PROKARYOTIC CELLS

... d. Like molecular fingerprints; identify each cell as self vs. nonseif e. Structural basis of every cell membrane f. A membrane property caused by motions and interactions of its components g. Pump specific solutes across a membrane to the side where they are more concentrated h. A mix of phospholip ...
Cells, Tissues, Organs and Body Systems
Cells, Tissues, Organs and Body Systems

... Chromosomes: carry genetic information Cell Membrane: controls what goes in and out of the cell Cytoplasm: allows materials to be transported quickly and stored Vacuole: stores water and nutrients Flagellum: a whip-like tail that allows some cells to move Cilia: tiny hairs that can move some c ...
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Signal transduction



Signal transduction occurs when an extracellular signaling molecule activates a specific receptor located on the cell surface or inside the cell. In turn, this receptor triggers a biochemical chain of events inside the cell, creating a response. Depending on the cell, the response alters the cell's metabolism, shape, gene expression, or ability to divide. The signal can be amplified at any step. Thus, one signaling molecule can cause many responses.
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