Cytology Biochemistry – Chap. 2 Cell Biology – Chap. 3.

Slides:

Advertisements

Similar presentations

CELL COMPOUNDS Water Acids, Bases & Buffers Water Acids, Bases & Buffers.

Advertisements

Section 2 Water and Solutions

Chapter 3: Water & Life. 1.I can explain the significance of polar covalent and hydrogen bonds within and between water molecules. a.I can determine how.

Lecture Presentation by Patty Bostwick-Taylor Florence-Darlington Technical College Chapter 2 Basic Chemistry © 2015 Pearson Education, Inc.

The Single most abundant compound in most living things

Chapter 3: Water & Life. 1.I can explain the significance of polar covalent and hydrogen bonds within and between water molecules. a.I can determine how.

Laptop Time!  Click on your hard drive  Click on documents  Create new folder “Biology”  Color label it  Open biology folder and create these folders:

Cytology Biochemistry – Chap. 2 Cell Biology – Chap. 3.

BIOCHEMISTRY I General Chemistry August CHEMISTRY OF LIFE Atom: the actual basic unit - composed of protons, neutrons, and electronsAtom: the actual.

NOTES: 2.2 – Properties of Water. Water Overview… Water is perhaps the most important compound in living organisms Because so many substances can dissolve.

Water: The Molecule of Life

Chapter 3 Water and the Fitness of the Environment.

UNIT A: Cell Biology Chapter 2: The Molecules of Cells: Sections 2.3, 2.4 Chapter 3: Cell Structure and Function Chapter 4: DNA Structure and Gene Expression.

Water Why is water so important to life?  Water covers more than 75% of the Earth’s surface.  Living organisms are composed of 60-90% water.  Life.

Figure Water is Central to Life Water has several properties that life is dependent upon including: Cohesion High heat of vaporization High specific.

2.3 Chemistry of Water. Properties of Water Water has a high heat capacity.

 The water molecule is a polar molecule, meaning it has a partial positive end and partial negative end.

Water Basics Polar: part of a molecule is slightly positive, while another part is slightly negative Oxygen “hogs” electrons from hydrogen – 8 protons:

Biological Molecules B2, B3, B4. Water and It’s role in biological Systems  describe how the polarity of the water molecule results in hydrogen bonding.

II. Properties of Water *Water is the single most abundant compound in most living things. A. The Water Molecule 1. Polarity Polar molecule – a molecule.

Water Basics Polar: part of the molecule is slightly positive… other part slightly negative – Oxygen (-) – Hydrogen (+) Oxygen “hogs” hydrogen electrons.

Water Basics Polar: part of the molecule is slightly positive… other part slightly negative – Oxygen (-) – Hydrogen (+) Oxygen “hogs” hydrogen electrons.

Regents Biology The Chemistry of Life What are living creatures made of? Why do we have to eat?

Water Basics Polar: part of the molecule is slightly positive… other part slightly negative – Oxygen (-) – Hydrogen (+) Hydrogen Bond: Positive Hydrogen.

Essential Questions How does the structure of water make it a good solvent? What are the similarities and differences between solutions and suspensions?

Objectives: 1) Describe the importance of water to living systems 2) Explain how each of water’s properties relate to polarity and H-bonding.

2.2 The Water Molecule  Polarity A water molecule is polar because there is an uneven distribution of electrons between the O and H atoms.

Chapter 2 The Chemistry of Life Sec. 2-2 Properties of Water.

Do Now Name two types of Mixtures Muddy water would be called what? What are the strongest chemical bonds? Define solute and solvent.

Basic Chemistry Review. Matter 1. Matter refers to anything that takes up space and has mass 1. Matter refers to anything that takes up space and has.

3 Water and Life Lecture Presentation by Nicole Tunbridge and

Chapter 3 – Water and Fitness of the Environment

PH and Living Things.

Acids, Bases and pH.

2.3 Chemistry of Water.

Water Chemistry and Acid/Base Review

Water and the Fitness of the Environment

العلم شجرة والعمل ثمرتها

Warm-Up What 2 elements besides H and N make up the bulk of living matter? An element has a mass of 207 and has 125 neutrons in its nucleus. How many protons.

Chemistry Comes Alive: Part B

Learning Objectives Define the terms pH, acid, base and buffer.

Biochemistry – Chap. 2 Cell Biology – Chap. 3

Warm-Up What 2 elements besides H and N make up the bulk of living matter? An element has a mass of 207 and has 125 neutrons in its nucleus. How many protons.

Chapter 2 Basic Chemistry pages

Part 2: Reactions & Inorganic Compounds

Properties of Water and the Fitness of the Environment

2-2 Properties of Water Q: How does the structure of water contribute to its unique properties? A: Because water is a polar molecule, it is able to form.

Importance of Water Part 1.

Biology 12 Unit A The Chemistry of Life – Part 1

Copyright Pearson Prentice Hall

Chemistry Review and Properties of Water!

Water and the Fitness of the Environment

“Water, water everywhere”

Properties of Water! Why Water is Special.

Warm-Up What 2 elements besides H and N make up the bulk of living matter? An element has a mass of 207 and has 125 neutrons in its nucleus. How many protons.

Acids, Bases and pH.

Notes: The pH Scale The pH scale is used to measure the strength of an acid or a base. pH scale runs from 0 to 14.

Water and Solutions 6.3.

Aim: How can we describe the various properties of water

Welcome to Class! DO NOW (No talking) Today’s Agenda

Atomic Structure of an Atom

Acids and Bases When water dissociates,

Water and the Fitness of the Environment

Chapter 2: The Molecules of Cells

Basic Chemistry Water Acids, Bases and pH

Classes of Compounds Inorganic compounds Organic compounds

Water and the Fitness of the Environment

Solutions and pH Chapter 2.

2-2 Properties of Water.

Presentation transcript:

Cytology Biochemistry – Chap. 2 Cell Biology – Chap. 3

Learner Outcomes: To describe the characteristics and identify the monomers of lipids, proteins, carbohydrates, and nucleic acids and to define their role in biochemical processes. To analyze and explain the chemical reactions that provide energy for the body. To investigate and describe the integration of the chemical and physical properties that contribute to homeostasis in cells. To compare the structures and functions of organelles within cells of the body. To describe the processes involved in the cell cycle.

Importance of Water Properties:  It is polar (H+ hydrogen ion & OH- hydroxide ion)  Held together by Hydrogen Bonds - relatively weak; can be broken easily.

Characteristics of H2O- Why important in Living Systems 1. Universal solvent  aids in ionization of salts and electrolytes within the body. 2. Cohesive  allows blood vessels to be filled; even distribution throughout body. 3. High heat of vaporization  resistant to change; helps maintain homeostasis of body temp.

Acids & Bases Acids – dissociate in water; release hydrogen ions (H+)  Ex’s: lemon juice, hydrochloric acid, coffee, tomatoes, vinegar Bases – take up H+ ions or release hydroxide ions (OH-).  Ex’s: milk of magnesia, ammonia

pH Scale

pH of body fluids needs to be maintained within a narrow range, or health suffers. Ave. pH of blood is 7.4 Buffers are built-in mechanisms to prevent pH changes.  chemicals or combos of that take up excess H+ ions or hydroxide ions. - ex: combo of carbonic acid (H2CO3) & bicarbonate ion (HCO3) help maintain pH of blood. Q: How does water play a role in this process?