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Levels of Organization
Levels of Organization

... buttercups are also organisms. Even a unicellular (one celled) bacterium is a organism. An organism is an entire living thing that carries out all the basic life functions. The organism is the fifth level of organization. ...
Plant Cell
Plant Cell

... “little organs” • Specialized structures inside EUKARYOTIC cells – each structure has a job to do ...
Development ch. 42
Development ch. 42

... ◦ All four extraembryonic membranes are essential for development ...
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Archae and Bacteria ppt

... caused by a chemical reaction of the metals with the ocean water. In extreme temperatures and pressures, this is where some thermoacidophiles like to live. ...
Kingdom Archaebacteria
Kingdom Archaebacteria

... entering your body and taking what they need in order to survive • In some cases, the competition for the resources in your body can result in you becoming ill. ...
Bacteria Powerpoint
Bacteria Powerpoint

... entering your body and taking what they need in order to survive • In some cases, the competition for the resources in your body can result in you becoming ill. ...
Properties and Classification of Microorganisms
Properties and Classification of Microorganisms

... move into a bacterial cell, they must be broken down into simpler substances. Enzymes do this by increasing the rate of biochemical reactions. Produced within the bacterial cell, enzymes move through the cell wall to break down the food on the outside into a form bacteria can use. ...
biology-unit-1 - Churchill High School
biology-unit-1 - Churchill High School

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Asexual and Sexual Reproduction Study Guide:
Asexual and Sexual Reproduction Study Guide:

... Chromosome copied cell divides much like mitosis, but then divides again without making another copy resulting in 4 daughter cells with ½ the chromosomes of the parent cells. These cells become sex cells and are used in sexual reproduction resulting in offspring that is unique to both parents as eac ...
Levels of Organization
Levels of Organization

... in the LOW POWER circle. Change the nosepiece to MED/HIGH Power you’ll notice the “e” is out of focus. DO NOT TOUCH the Coarse Adjustment knob, instead use the FINE adjustment knob to sharpen your picture. Draw what you see in the MED/HIGH power circle. 2. Compare what you see through the eyepiece a ...
Unit 7A Cells
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... The amoeba is a protozoan that belongs to the Kingdom Protista. The name amoeba comes from the Greek word amoibe, which means change. (Amoeba is also spelled amoeba.) Protists are microscopic unicellular organisms that don't fit into the other kingdoms. Some protozoans are considered plant-like whil ...
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... cells have neither a membrane-bounded nucleus nor other membrane-bounded organelles. These organisms are very successful. Did you know all bacteria found on the surface of our planet weigh more than any other species? That's amazing. ...
Anatomy and Physiology Warm up questions Fall 2013 QUESTION
Anatomy and Physiology Warm up questions Fall 2013 QUESTION

... lipids are fuel but stored fuel/ long term storage, they are also nerves, cell membranes and hormones carbs are immediate fuel ­ not much for construction examples ...
Physics: Energy Transfer and Transformations (STEM)
Physics: Energy Transfer and Transformations (STEM)

... organism alive. Many organisms (for example yeast, algae) are single-celled and many organisms (for example plants, fungi and animals) are made of millions of cells that work in coordination. 3. All cells come from other cells and they hold the genetic information needed for cell division and growth ...
Lesson 1: Sexual Reproduction and Meiosis
Lesson 1: Sexual Reproduction and Meiosis

... C. Haploid Cells 1. Sex cells are haploid; they have only one chromosome from each pair of chromosomes. 2. In meiosis, one diploid cell divides and makes four haploid cells. D. The Phases of Meiosis 1. Meiosis involves two divisions of the nucleus and the cytoplasm. These divisions, known as meiosis ...
Unit 1 Cell Biology Topic 3: Producing new cells
Unit 1 Cell Biology Topic 3: Producing new cells

... before and after, Petri dish lids only opened when needed and then sealed and all used plates disposed of when finished in a plastic bag to be autoclaved. o Cells can be grown in agar or broth as mediums. o A fermenters is a container used to grow cells. Oxygen, temperature and pH are controlled, su ...
Cells 8
Cells 8

... defenders in the immune system are chemical agents called antibodies. When an invader, like bacteria , breaches our physical defenses its chemical signals identify it as an invading cell. The chemicals signals given off by an invading organism are called antigens. Antigen is short for “antibody gene ...
Sexual reproduction
Sexual reproduction

... •All of the organs that work together for sexual reproduction to take place are collectively called the reproductive systems. •Let’s take a look at the reproductive systems in human females and males... ...
Asexual and Sexual Reproduction Study Guide
Asexual and Sexual Reproduction Study Guide

... Chromosome copied cell divides much like mitosis, but then divides again without making another copy resulting in 4 daughter cells with ½ the chromosomes of the parent cells. These cells become sex cells and are used in sexual reproduction resulting in offspring that is unique to both parents as eac ...
Multicellular organisms meet their needs in different ways.
Multicellular organisms meet their needs in different ways.

... asexually can reproduce more often. Asexual reproduction limits genetic diversity within a group because offspring have the same genetic material as the parent. Check Your Reading ...
9278432 Living Envir. Ju03
9278432 Living Envir. Ju03

... page along the perforations and, slowly and carefully, tear off the answer sheet. Then fill in the heading of your answer sheet. This examination has three parts. You must answer all questions in this examination. Write your answers to the Part A multiple-choice questions on the separate answer shee ...
The Skeletal System PPT BEST
The Skeletal System PPT BEST

... Cells are organized into TISSUES!  A TISSUE is a group of similar cells that all do the same thing (they have the same function). Examples: ...
Living Things
Living Things

... Cells are organized into TISSUES!  A TISSUE is a group of similar cells that all do the same thing (they have the same function). Examples: ...
Characteristics of organisms 08
Characteristics of organisms 08

... embryo within the uterus and later transforms into an offspring. It is useful to study about the above process to understand the growth & development. Mainly the increase in number of cells by the cell division contributes towards the growth of a multicellular organism. The growth of a unicellular o ...
Reproduction - VCE
Reproduction - VCE

... chromosomes in gametes by half (haploid) • Equal genetic contribution from male and female parents • Gametes are genetically unique because: 1)Recombination (crossing over) • Genetic information exchanged between members of each pair when they pair up ...
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Dictyostelium discoideum



Dictyostelium discoideum is a species of soil-living amoeba belonging to the phylum Amoebozoa, infraphylum Mycetozoa. Commonly referred to as slime mold, D. discoideum is a eukaryote that transitions from a collection of unicellular amoebae into a multicellular slug and then into a fruiting body within its lifetime. Its unique asexual lifecycle consists of four stages: vegetative, aggregation, migration, and culmination. The lifecycle of D. discoideum is relatively short, which allows for timely viewing of all stages. The cells involved in the lifecycle undergo movement, chemical signaling, and development, which are applicable to human cancer research. The simplicity of its lifecycle makes D. discoideum a valuable model organism to study genetic, cellular, and biochemical processes in other organisms.
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