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Biology

enzyme lab

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Biology
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Chemistry
Biology
Cell Biology
Osmosis
Potato
Tonicity
Enzyme
Lysis
Catalysis
Osmotic pressure
Properties of water
water

Potato Osmosis Biology SL - ATh INVESTIGATION ?Potato Osmosis? INTRODUCTION Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region. Involved in this process are hypotonic, hypertonic and isotonic solutions. A hypotonic solution is one with a lower osmotic pressure, indicating that the net movement of water moves into the said solution whereas a hypertonic solution is one with a higher osmotic pressure, thus the net movement of water will be leaving the hypertonic solution. Lastly, an isotonic solution entails no net

BIO 101 MOCK EXAM 1

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Biology
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Chemistry
Biology
organelles
Membrane biology
Acid-base chemistry
Chemical bonding
Cell Biology
Cell membrane
metabolism
Amino acid
Acid
Hydrogen bond
chemistry of life

Bio 101- Sparace Fall 2013 Mock Exam 1: Chpt 2-7 15 / P / 30.973761 What is the atomic mass of Phosphorus? 5 8 15 30.973761 How many valence electrons does Phosphorus have? 2 5 8 15 Which of the following is NOT one of the four elements that make up 90% of living matter? Carbon Oxygen Helium Nitrogen Hydrogen What are the subatomic particles that make up atoms? Px, Py, and Pz Protons, neutrons, and electrons Anions, cations, and nutrions Carbon, oxygen, and hydrogen What is the sum of protons and neutrons? Atomic number Nuclear ratio Electronegativity Atomic mass Which bonds rely on the equal or unequal sharing of electrons? Hydrogen Bonds

Variables Practice

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Biology
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Design of experiments
Statistics
Mathematics
scientific method
Dependent and independent variables
Variable
experiment
Internal validity
Manipulation checks
AP
Biology

Independent and Dependent Variables An independent variable is a factor that is manipulated in an experiment.? The experimenter controls whether or not subjects are exposed to the independent variable.?? The dependent variable is measured to determine if the manipulation of the independent variable had any effect.? For example,?? to test a hypothesis that eating carrots improves vision, the experimenter would manipulate whether or not subjects ate carrots.? Thus, eating carrots is the independent variable.? Each subject?s vision would be tested to see if carrot eating had any effect.? Thus, vision is the dependent variable.? The subjects assigned to eat carrots are in the experimental group, whereas subjects not eating carrots are in the control group. ?

classification of tissues chapter 6

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Biology
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anatomy
Tissues
Biology
Epithelium
Connective tissue
Loose connective tissue
Osseous tissue
Stratified squamous epithelium
Pulmonary alveolus
Basement membrane
Serous membrane
Minusheet Perfusion Culture System
health
Anatomy and Physiology

85 # 102382 C P B j i C i /CA/SF A M i b/Mi h ll/S IIi P N 85 C/M/Y/K DESIGN SERVICES OF 6R E V I E W S H E E T Tissue Structure and Function?General Review 1. Define tissue. _______________________________________________________________________________________ ____________________________________________________________________________________________________ 2. Use the key choices to identify the major tissue types described below. Key: a. connective tissue b. epithelium c. muscle d. nervous tissue ____________________ 1. lines body cavities and covers the body?s external surface ____________________ 2. pumps blood, flushes urine out of the body, allows one to swing a bat ____________________ 3. transmits electrochemical impulses

Analyses of first AP Labs

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Biology
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Chemistry
Biology
diffusion
Membrane biology
Transport phenomena
metabolism
Membrane technology
Passive transport
Osmosis
Molecular diffusion
Enzyme
Semipermeable membrane
AP Bio Lab 2

Analyses Osmosis and Diffusion Osmosis and Diffusion are processes of passive transport. In this lab we studied the basic concepts of molecular movement in solutions. During the execution of the experiment, I became aware that molecules are in constant motion and tend to move from areas of higher concentration to those of lower concentration. Diffusion is the movement of molecules following that concentration gradient. It occurs on the diverse states of matter. Osmosis refers to the specialized diffusion of molecules of water through a selectively permeable membrane.

AP Biology: Lab 1 Example

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Biology
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Chemistry
Food and drink
Sweeteners
Membrane technology
Starch
nutrition
diffusion
Dialysis tubing
Sucrose
Dialysis
Glucose
Osmosis
health
lab
Biology

Contents Initial Mass Final Mass Mass Difference Percent of Change in Mass Average Change in Mass for Repeated Contents 0.0 M Distilled Water 7.04 8.15 +1.11 +15.76% 0.2M Sucrose 9.47 9.79 +0.32 +3.37% +2.08% 0.2M Sucrose 8.85 8.93 +0.07 +0.79% +2.08% 0.4M Sucrose 9.75 9.50 -0.25 -2.56% -2.41% 0.4M Sucrose 7.05 6.89 -0.16 -2.26% -2.41% 0.6M Sucrose 6.96 4.80 -2.16 -31.03% 0.8M Sucrose 13.50 9.50 -4.00 -29.62% 1.0M Sucrose 4.98 3.52 -1.46 -29.31% DATA Potato Core Data In Sucrose Solutions Assigned Questions Which substances are entering the bag and which are leaving the bag?

Digestive System

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Biology
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anatomy
Digestive system
Biology
Medicine
Digestion
Digestive enzyme
Human gastrointestinal tract
Small intestine
Bile
Stomach
Gastro-
Pancreas
health

DIGESTIVE SYSTEM - Transfers nutrients, salts, H2O and vitamins in food from external to internal environment Anatomy: Digestive tract (gastrointestinal (GI) tract) Mouth -> Pharynx -> Esophagus -> Stomach -> Small intestine -> Large intestine -> Anus DIGESTIVE SYSTEM Digestive System: Mouth: - teeth = mastication (incisors, canines, molars) -3 pairs salivary glands secrete saliva: 1) moistens and lubricates food 2) amylase DIGESTIVE SYSTEM Digestive System Organs Pharynx and Esophagus - transport food and water to stomach - swallowing reflex: epiglottis As food approaches stomach, sphincter relaxes so food can go into stomach Sphincter closes -> Prevents acid reflux DIGESTIVE SYSTEM

Diffusion Worksheets

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Biology
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Chemistry
Biology
Cell Biology
Membrane biology
diffusion
Solutions
Membrane technology
Osmosis
Osmotic pressure
Tonicity
Water potential
Dialysis tubing
health

AP Biology James Pre-Lab: Diffusion and Osmosis in Model Systems In parts 1 and 2 of this lab, you will have the opportunity to investigate the processes of diffusion and osmosis in model membrane systems. You will also investigate the effect of solute concentration on water potential as it relates to living plant tissues. Objectives: At the completion of this AP laboratory, you should be able to: Describe the mechanisms of diffusion and osmosis. Describe how solute size and molar concentration affect the process of diffusion through a selectively-permeable membrane. Describe the relationship between solutions that are hypotonic, hypertonic, or isotonic. Design an experiment to demonstrate water potential.

world history

Subject: 
World History
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Zoology
Megafauna
Biology
Purusha
human
Vaishya
Attachment theory
silk road

The Bronze Age (3000 BC) ? Key Question from Lecture: What aspects of life during the bronze age in Afroeurasia distinguish it from earlier eras? ? technology ? plow, tools & weapons ? plow only useful in areas of harder soil ? sticks used in softer soil areas ? depended on environment ? maritime trade ? star charts---planning ? WRITING ? population grew: 8000 BC ? there was a population boom leading up to the bronze age ? Writing ? The code of Hammurapi (c. 1792 BC) ? only the elite can read --> power ? emerging class differences ? hierarchy ? slavery/ class ? legal system that favors the wealthy (slaveholder) ? gender ? differentiation based on ? class ? gender ? women have fewer rights but they have some ? ex: they can initiate divorce

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