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... Characteristics: quality of an organism DNA: material in life forms that transfers genetic characteristics Inherited: characteristics from parents Likeness: similarity Organism: individual living system Traits: distinguishing characteristic Cells: the basic unit of life Multicellular: composed of ma ...
MCAS And Final Review Packet 2014
MCAS And Final Review Packet 2014

... preventing the substrate and the enzyme fitting together. The lock and key no longer fit together. Sometimes the enzyme does not work at all or it may work with reduced efficiency 2. Cell Biology 2.1 Relate cell parts/organelles (plasma membrane, nuclear envelope, nucleus,nucleolus, cytoplasm, mitoc ...
29.2 Form and Function in Invertebrates
29.2 Form and Function in Invertebrates

... one part of their life cycle. Sexual reproduction maintains genetic diversity by allowing for new combinations of genes Meiosis - fusion of haploid gametes during fertilization to form diploid zygote Zygote undergoes mitosis and develops into animal by differentiation Most invertebrates have separat ...
Investigation 4
Investigation 4

... dead cells to form solid feces. Finally water is reabsorbed into the body which the feces are moved into the rectum to await expulsion. (lovely.) Other organs that play important roles in digestion include the liver, gallbladder, and pancreas. The Pancreas: is a glod organ that manufactures enzymes ...
5.2.05 Immune System
5.2.05 Immune System

... • Blood types include A, B, or AB, or type O, which has no antigens. • In the plasma there are two possible naturally-occurring antibodies: anti-A and anti-B. ...
Answers to Mastering Concepts Questions
Answers to Mastering Concepts Questions

... exposure to a particular chemical can cause birth defects a year later? How would such an analysis differ if it were a man or a woman who was exposed? One strategy would be to conduct a statistical analysis of birth defects among children born to men and women exposed to the suspected chemical; a co ...
Worksheet
Worksheet

... may press the “PLAY” button to hear the audio that accompanies the text. 1. The heart is referred to as what of the circulatory system? Describe how the heart is divided into sections: ...
Properties and Classification of Microorganisms
Properties and Classification of Microorganisms

... in common; the cell. This is a tiny living factory capable of converting simple food substances into energy and new cell material and of reproducing itself. Large organisms, including people, are composed of billions of cells with many different roles. They make up your body’s parts from your brain ...
Honors Biology Botany Lab Practical Review
Honors Biology Botany Lab Practical Review

... Honors Biology Botany Lab Practical Review You may make a word bank on your own 46 questions Plants: Helpful pages in book: roots: page 484, 485 leaves: page 483 stems: page 481 Dicot Root: be able to id as dicot, id xylem, phloem, and amyloplast MonocotRoot: be able to id as monocot, Id root and pi ...
How Does Your Body Take In Oxygen?
How Does Your Body Take In Oxygen?

... • Capillaries are tiny blood vessels with very thin walls through which oxygen and nutrients can pass. • As red blood cells move through a capillary, they release their oxygen to body cells outside of the capillary. ...
2017 RC 4 Student Notes PPT
2017 RC 4 Student Notes PPT

... • Homeostasis: regulation of conditions within a cell (like osmosis) or an organism (like blood sugar balance), or system (like ecosystem balance), which allows for stable, internal balance (equilibrium). • Internal feedback mechanism: selfregulating process that can help maintain homeostasis. Exam ...
Animal Structure and Function
Animal Structure and Function

... ► Ends with the distal convoluted tubule where it joins with the collecting duct. ► Middle: Loop of Henle  Descending and ascending limb ...
Nervous System: concussion: a temporary disturbance of the brain`s
Nervous System: concussion: a temporary disturbance of the brain`s

... cell – in a sack of fluid contained within an outer skin called the cell membrane. The nucleus receives and sends nerve impulses. It also regulates the amount and types of proteins made in the cell. degenerative disease: a breakdown or deterioration of the function or structure of the nervous system ...
How Animals work
How Animals work

... single nucleus striated intercalated disks ...
Nervous System Vocab
Nervous System Vocab

... Specialized Cells- Uniquely suited to perform a particular function. Nervous Tissue- Transmits Nerve impulses throughout the body Homeostasis- Keeping internal environment stable. Feedback inhibition- process in which a stimulus produces a response that opposes the original stimulus. Neurons-Cells t ...
Word Roots - Jennifer`s e
Word Roots - Jennifer`s e

... a- = without; -koilos = a hollow (acoelomate: the condition of lacking a coelom) a- = without; -pomo = fruit (apomixis: the asexual production of seeds) abyss- = deep, bottomless (abyssal zone: the very deep benthic communities near the bottom of the ocean; this region is characterized by continuous ...
Chapter 3 (Cells Review)
Chapter 3 (Cells Review)

... • G phases – cell grows and synthesizes structures other than DNA • S phase – cell replicates DNA ...
Review #9 – Chapters 40 – 51
Review #9 – Chapters 40 – 51

... a. Proteins or polysaccharides usually found on the cell surface of invading bacteria or viruses b. Proteins embedded in T cell membranes c. Protein circulating in the blood that tag foreign cells for complement destruction d. Proteins that consist of two light and two heavy polypeptide chains e. c ...
lect 4
lect 4

... Like in animal cells, plant cells are also specifically designed to function along with their rolls and produce life. Millions of cells work together to produce food for these green plants by taking light and turning it into energy. A pollen cell, for example is like a male sperm cell compared to an ...
I want to be the first person to use stem cells to help fix an eye.
I want to be the first person to use stem cells to help fix an eye.

... • A stem cell ocular prosthetist would have the same duty but the eyes would be made of stem cells and could actually see things. The ocular prosthetist has to measure the eye socket, match the eye color and attach the artificial eye to the eye muscles so that when the real eye moves so does the art ...
Graph 1: Rabbits Over Time
Graph 1: Rabbits Over Time

... Neurons – sodium/potassium pumps or iodine in thyroid ...
RSPT 1207 Cardiopulmonary Anatomy and Physiology
RSPT 1207 Cardiopulmonary Anatomy and Physiology

... b. Terminal bronchioles – columnar cells are gradually replaced by this single layer of cubic cells SIMPLE SQUAMOUS EPITHELIUM – These are simple cells, lie in a single layer, form the walls of the alveoli Location: In the alveoli This is where gas diffusion occurs Provides as thin an interface as p ...
Worcester Public Schools High School Course Syllabus – District
Worcester Public Schools High School Course Syllabus – District

... Recognize that biological organisms are composed primarily of very few elements. The six most common are C, H, N, O, P, and S. Describe the basic molecular structures and primary functions of the four major categories of organic molecules (carbohydrates, lipids, proteins, nucleic acids). Explain the ...
Unit 1 Notes
Unit 1 Notes

... Cells need a constant supply of ATP, so it is re-synthesised as quickly as it is broken down. All living things respire - this is often referred to as “chemical” or “tissue” respiration (to distinguish it from the common use of the word “respiration” to mean “breathing”). ATP acts as a link between ...
документ
документ

... The tallest tree is the Redwood (Sequoia sempervirens) approx 110 m The tallest Angiosperm is the Australian Eucalyptus regnans Water Uptake and transport (Fig. 32.1) = water is essential because: transport solute, cool the body, photosynthesis and Turgor pressure Osmosis- movement of H2) through a ...
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Cell theory



In biology, cell theory is a scientific theory which describes the properties of cells. These cells are the basic unit of structure in all organisms and also the basic unit of reproduction. With continual improvements made to microscopes over time, magnification technology advanced enough to discover cells in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology. Over a century later, many debates about cells began amongst scientists. Most of these debates involved the nature of cellular regeneration, and the idea of cells as a fundamental unit of life. Cell theory was eventually formulated in 1838. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchow contributed to the theory. Cell theory has become the foundation of biology and is the most widely accepted explanation of the function of cells.The three tenets to the cell theory are as described below: All living organisms are composed of one or more cells. The cell is the most basic unit of life. All cells arise from pre-existing, living cells, by biogenesis.
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