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1. Snowdrop (3046 bytes)
   16: ...ch larger and flower in spring ? or early summer, depending on the species ? with all six petals in th...
   21: ... /><small>''Flora von Deutschland, ֳterreich und der Schweiz'' 1885</small>]]
   24: ...anuary/March, white flowers, with broad leaves folded back at the edges
2. Circulatory system (8794 bytes)
   2: ...art_crca.jpg|thumb|200px|Human Heart Clipart provided by [http://classroomclipart.com Classroom Clip A...
   7: #Delivery of [[oxygen]] and [[nutrient]]s to all part...
   8: #Collection of metabolic wastes and delivery to the excretory organs, e.g. [[kidney]]s.
   9: #Role in the [[immune system]] of defense against [[infection]].
   20: ... the four-chambered heart of birds evolved independently of that of mammals.
3. Pulmonary alveolus (8193 bytes)
   6: ...by capillaries. In some alveolar walls there are pores between alveoli. There are two major alveolar ce...
   10: ...hospholipids, which are called surfactants, and [[pore]]s help to equalize pressures and prevent collaps...
   12: ===Details===
   16: ...e transported by the blood. Although carbon dioxide and oxygen are the most important molecules excha...
   18: ...o gas diffusion. Thus, transport of carbon monoxide is 'diffusion limited'. Gases that reach equilib...
4. Skin (8340 bytes)
   1: ...humb|right|300px|Layers of human skin. Image provided by [http://classroomclipart.com Classroom Clip A...
   2: ... is composed of a layer of tissues that protect underlying [[muscle]]s and [[organ (anatomy)|organ]]s....
   6: ...ly serves to augment the insulation the skin provides. On some animals, the skin is very hard and thic...
   8: ... tissue]], often giving rise to discoloration and depigmentation of the skin.
   12: ...ce and condition of the skin, such as those for [[pore control]] and [[blackhead]] cleansing.
5. Ceramics (15941 bytes)
   7: ...rthenware and porcelain to decorative tiles and modern sculptures, reflecting both functional and aest...
   10: ...cement, leading to more uniform and sophisticated designs.
   17: *Hand-Building: This includes pinching, coiling, and slab building. It's one o...
   19: ...is popular for making bowls, vases, and other rounded forms.
   21: ... making it easier to produce multiple copies of a design.
6. Animal (16429 bytes)
   17: &nbsp;Superphylum [[Deuterostome|Deuterostomia]]<br>
   20: &nbsp;&nbsp;&nbsp;&nbsp;[[Echinoderm]]ata<br>
   49: ... later on. Biologically, [[human]] beings fall under the animal kingdom.
   51: ...nimals, but biologically they are definitely included. The name animal comes from the [[Latin]] word ...
   55: ...parate [[biological tissue|tissues]]. These include [[muscle]]s, which are able to contract and contr...
7. Animals (10378 bytes)
   2: ...guish them from other life forms. Animals are divided into various sub-groups, including birds, mammal...
   16: ...parate [[biological tissue|tissues]]. These include muscles, which are able to contract and control l...
   18: ...ar junctions: tight junctions, gap junctions, and desmosomes.
   20: == Reproduction and development ==
   22: ... differentiation, and growth. Some animals also undergo metamorphosis, a dramatic change in form after...
8. Cell (biology) (28190 bytes)
   3: The [[cell theory]], first developed in the [[19th century]], states that all [...
   15: ...nergy stored in organic molecules. This energy is derived from [[metabolic pathway]]s.
   21: ...mes (''dark blue''). The drawing on the ''right'' demonstrates how bacterial DNA is housed in a struct...
   23: ...ms) that function and survive more or less independently, through ''colonial'' forms with cells living...
   34: ...these primary components of the cell then briefly describe their function.
9. Golgi apparatus (4223 bytes)
   1: ...ogy)|vesicle]]s. Thus, it functions as a central delivery system for the cell.
   3: ... modified, sorted and shipped towards their final destination. The Golgi apparatus is present in most ...
   7: ...m]] and Golgi apparatus: (1) Nucleus, (2) Nuclear pore, (3) Rough endoplasmic reticulum (RER), (4) Smoot...
   9: ...] and similar vesicles. The ''cis'' face is the side facing the ER, the ''medial'' region is in the mi...
   13: The golgi apparatus is considered more or less the "postal office" of the cell. ...
10. Endoplasmic reticulum (5319 bytes)
    8: (2) Nuclear pore.
    21: ...tions from the nucleus). Their rough appearance under electron microscopy led to their being called ro...
    26: ...he coarse ER manufactures and transports proteins destined for membranes and secretion.
    32: ...oxification of the cell (enzymes in the smooth ER detoxify chemicals), and [[calcium]] storage. It als...
    43: Correct folding of newly made proteins is made possible by several ER proteins including: [[PDI]...
11. Nuclear envelope (959 bytes)
    1: ...nuclear space, and is usually about 20 - 100 nm wide. The outer membrane is continuous with the [[roug...
    3: Numerous [[nuclear pore|nuclear pores]] are present on the nuclear envelope to facilit...
    5: ...mina]], a network of [[intermediate filament]]s made of [[lamin]], that plays a role in [[mitosis]] an...
    7: ...ay a role in the disposition of [[chromatin]] inside the nucleus.
12. Cell nucleus (3211 bytes)
    1: ...the [[cytoplasm]] and to store [[information]] needed for [[cell division|cellular division]].
    4: ...he nuclear face of the nuclear envelope is surrounded by a scaffold of filaments called the [[nuclear ...
    8: ...lear envelope]]. (2) [[Ribosome]]s. (3) [[Nuclear pore]] complexes. (4) [[Nucleolus]].<br>
    10: The whole structure is surrounded by cytoplasm. (Drawing is based on ER images.)<b...
    12: ...s are dissolved. These substances include nucleotide triphospates, [[enzymes]], [[proteins]], and [[tr...
13. Annelid (7780 bytes)
    11: &nbsp;&nbsp;&nbsp;[[Acanthobdellida]]<br>
    12: &nbsp;&nbsp;&nbsp;[[Branchiobdellida]]<br>
    17: ...small>*Some authors consider the subclasses<br/>under Clitellata to be classes</small>
    19: ...itic or mutualistic. They range in length from under a millimetre to over 3 metres.
    23: ...[[muscle]] underneath a thin [[cuticle]] and [[epidermis]], and a system of longitudinal muscles. In e...
14. Arthropod (9248 bytes)
    2: {{Taxobox_image | image = [[Image:spider_crab_at_hydrocarbon_sink.Gulf_of_Mexico.NOAA.jpg...
    11: **[[Arachnida]] - [[Spider]]s, [[Scorpion]]s, etc.
    13: **[[Pycnogonida]] - [[Sea Spider]]s
    15: **[[Chilopoda]] - [[Centipede]]s
    16: **[[Diplopoda]] - [[Millipede]]s
15. Polyp (4768 bytes)
    1: ...ttached and the other bears the [[mouth]], surrounded by a circlet of [[tentacle]]s.
    5: ...by cells which have migrated into it from the ectoderm.
    7: ... systems the whole body may be retracted or protruded.
    9: ...ory [[pore]]s are known to occur in the foot, and pores may occur at the tips of the tentacles. Thus it ...
    11: ...n different cases. The column may be long and slender, or may be so short in the vertical direction th...
16. Leaf (20580 bytes)
    4: ...le. Note areas where chlorophyll (green) has been destroyed now appear yellow.]]
    8: ...species to species is presented in detail below under <u>Leaf types, arrangements, and forms</u>.
    10: A leaf is considered to be a plant organ, typically consisting of t...
    11: # An '''epidermis''' that covers the upper and lower surfaces
    15: === Epidermis ===
17. Mushroom (6650 bytes)
    3: ... The term "'''toadstool'''" is used typically to designate a basidiocarp that is poisonous to eat.
    6: ...|thumb|250px|right|Mushrooms are often dried in order to preserve them for use in cooking.]]
    7: ...terelles]], [[tooth fungus | tooth fungi]], [[polypore]]s, [[puffball]]s, [[jelly fungi]], [[coral fungi...
    9: ... hunting]] &mdash; an activity with a potentially deadly outcome that one should not attempt without k...
    12: ...emerging mushrooms<br>are too immature to safely identify the species]]
18. Platypus (21900 bytes)
    14: ...semi-[[aquatic]] [[mammal]] [[endemic (ecology)|endemic]] to the eastern part of [[Australia]], and on...
    15: The platypus is considered one of the strangest [[specimen]]s of the anim...
    22: ...al pound|pound]]s) and over two kilograms (just under four and one half pounds); with body length rang...
    23: ...platypus.jpg|thumb|250px|left|Platypus Image provided by [http://classroomclipart.com Classroom Clip A...
    24: ... with legs that are on the sides of rather than underneath the body.
19. Cell (29541 bytes)
    3: The [[cell theory]], first developed in the [[19th century]], states that all [...
    15: ...nergy stored in organic molecules. This energy is derived from [[metabolic pathway]]s.
    21: ...mes (''dark blue''). The drawing on the ''right'' demonstrates how bacterial DNA is housed in a struct...
    23: ...ms) that function and survive more or less independently, through ''colonial'' forms with cells living...
    34: ...these primary components of the cell then briefly describe their function.
20. Flagellum (8951 bytes)
    4: ...milar, but are different in many details and considered non-homologous. [[Eukaryote|Eukaryotic]] flag...
    8: ...ates with [[peptidoglycan]] layer, M ring is imbedded in the [[plasma membrane]], and the S ring is di...
    12: ...hat bacterial flagella may have evolved from such pores.
    18: ...te is random. The length of the run state is extended when the bacteria moves through a favorable grad...
    24: ... (e.g., [[Carl Woese|Woese]]), or a just a highly-derived bacterium with heavy adaptation to [[extremo...

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