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Cell

The Cell Theory

Subject: 
Biology
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Biology
Cell biology
Matthias Jakob Schleiden
Theodor Schwann
Cell theory
Cell
Rudolf Virchow
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Cell Theory
-Who created the cell theory? -Matthias Schleiden: In 1838, he discovered that plants are made of cells -Theodor Schwann: In 1839, he discovered that animals are also made of cells -Rudolph Virchow: In 1858, he stated that all cells come from the division of pre-existing cells -Based on their observations the cell theory states: 1. All living things are made of cells 2. Cells are the basic units of structure and function in an organism 3. All cells are made from existing cells

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Learning Express AP Biology Exam 2

Subject: 
Biology
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Biology
Cell biology
Nutrition
Cell cycle
Organelles
Glucose
Starch
Blood sugar
Mitosis
Cell
Eukaryote
Phosphorylation

1. Semiconservative replication of DNA refers to the fact that A. the daughter DNA is an entirely new duplex and thus the original DNA is intact. B. pieces of the old and new DNA duplexes are jumbled together in the daughter generation. C. each strand of the parent DNA serves as a template for the synthesis of its new partner strand. Thus, one strand is conserved in each new double helix. D. DNA replication is modest in its ATP requirements. E. DNA replication occurs by base pairing between adenine and thymine and between guanine and cytosine. 2. The following statements about the codon are true EXCEPT A. the codon is a triplet of nucleotides on messenger RNA (mRNA). B. the codon is a triplet of bases on transfer RNA (tRNA).

Learning Express AP Biology Exam 1

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Biology
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Biology
Biochemistry
Cellular respiration
Cell biology
Metabolism
Eli Lilly and Company
Insulin
Amino acid
Cell
Phosphorylation
Oxidative phosphorylation
Endoplasmic reticulum

Section: AP Biology Select the best of the five choices for each of the following questions. 1.If a woman carrying the trait for color blindness marries a man who is not color blind, and they have a boy, and if he marries a girl who is the product of a like marriage, what is the chance that their first daughter will be color blind? A. 1/16 B. 1/8 C .1/32 D .1/2 E. 0 2.A solution hypotonic relative to a red blood cell A. will cause an immersed red blood cell to undergo hemolysis. B.will cause an immersed red bloodcell to undergo crenation. C.will have no effect on a red blood cell that is immersed in it. D.will cause an immersed red blood cell to shrink. E. maybe a 1% NaCl solution.

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