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Biology

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Intertidal Zone Powerpoint

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Intertidal Zone Tessa Gebhart What is it? The intertidal zone is the area of the foreshore and seabed that is exposed to the air at low tide and submerged at high tide, the area between tide marks. Also known as the littoral zone. There are four areas of the intertidal zone. Spray Zone This area is dry much of the time, but is sprayed with salt water during high tides. It is only flooded during storms and extremely high tides. High Tide Zone Area is flooded only during high tide. Middle Tide Zone This area is both wet and dry due to it being uncovered twice a day by the tide going out. Low Tide Zone Usually underwater and only exposed when the tide is unusually low ANIMALS Abiotic Factors Animals in the rocky intertidal zone are fully exposed to the elements.

The Cell Song

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The Cell Song Chorus:?Cells of the animal, cells of the plant?Cells are basic units of all that I am?Cells help the plant to bloom and grow?Cells are in every organism I know! The nucleus is the brain?The center of the cell could be its name?Chromatin, in long strands?With dna and chromosome bands Chorus Two types of cells we all know?We?re eukaryotic and the other one?s pro?Animals and plants are with our eu?Prokaryotic?s scum and bacteria, too Chorus Cytoplasm is like egg whites?It?s very fluid and jelly ?like?Parts in the cytoplasm ? organelles?Are like baby organs inside of a cell Chorus The endoplasmic reticulum?Pronouncing it is lots of fun?It winds from the nucleus ? out in the cell?Moving materials extremely well Chorus

Genetics 2nd Edition

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Karvita B. Ahluwalia Formerly Professor Cell Biology and Electron Microscope Section Department of Biophysics All India Institute of Medical Sciences New Delhi, India Karvita B. Ahluwalia Formerly Professor Cell Biology and Electron Microscope Section Department of Biophysics All India Institute of Medical Sciences New Delhi, India Second Edition Copyright ? 2009, 1985, New Age International (P) Ltd., Publishers Published by New Age International (P) Ltd., Publishers All rights reserved. No part of this ebook may be reproduced in any form, by photostat, microfilm, xerography, or any other means, or incorporated into any information retrieval system, electronic or mechanical, without the written permission of the publisher.

Archeabacteria

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Simple, small, single-celled bacteria Have NO nucleus and mitochondria Contain few organelles Lack membrane-bound organelles Do not have chromosomal DNA Instead their genetic information is in the form of a circular loop called a plasmid Reproduce asexually by binary fission Most prokaryotes have one of 3 basic shapes Bacillus = Rod-shaped Coccus = Spherical Spirillum = Helical-shaped All organisms in the primitive Earth were thought to be prokaryotic Prokaryotic cells do not depend on oxygen for respiration, therefore they are extremely diverse and live almost anywhere in the biosphere Bacteria were once classified as the Monera kingdom. But today biologists separate bacteria into two kingdoms: Archaebacteria Eubacteria Archae = Ancient

pre-test of ch.50 for campbell AP Biology

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1 . ????? Which of the following investigations is not an example of the study of a biotic factor? (Concept 50.1???) [Hint] ? identifying food sources for an egret population ? observing interactions among various organisms in a rainforest canopy. ? investigating how the amount of annual precipitation affects a tree species ? investigating how an elk population competes for food ? All of the above are examples of possible biotic factor investigations. 2 . ????? A researcher is investigating how individual foxes are coping with the destruction of part of their habitat due to construction of a new highway. Which area of ecology is this researcher focusing on? (Concept 50.1??) [Hint] ? organismal ecology ? population ecology ? community ecology ?

evolution of fungi

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1. There are many possible hypotheses of how fungi originally evolved. Ranging from common ancestry of plants, to diverging as an entirely separate species have all been studied. One of the most surprising facts is that fungi is actually more similar to animals than that of plant cells. Containing similar cytoplasmic organelles and a like structure of DNA have caused speculation. The present theory is that some 965 million years ago a common ancestor of both fungi and animals diverged into the different algae and single celled organisms that we now know of today. Fungi would continue to evolve until their present fruiting bodies known today which occurred around 150 million years ago.

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