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Banded iron formations
Views: 1269
Filesize: 309.65kB
Date: Apr 16, 2011
 Baby Salamander
Views: 4264
Filesize: 61.74kB
Date: Apr 24, 2011
 Infant and neonatal mortality, 1940 - 2003.
Views: 1125
Filesize: 84.78kB
Date: May 5, 2011
 CycleBeads help women use the Standard Days Method.
Views: 1614
Filesize: 275.81kB
Date: May 5, 2011
Pelvic inflammatory disease. Chlamydia or gonorrhea spreads up the vagina into the uterus and then t
Views: 1481
Filesize: 155.71kB
Date: May 5, 2011
 Examples of pessaries. (A) Various shapes and sizes of pessaries available. (B) Insertion of one typ
Views: 3679
Filesize: 571.99kB
Date: May 5, 2011
 Experiment of Lederberg and Tatum demonstrating gene transfer in E. coli.
Views: 4436
Filesize: 100.66kB
Date: Jun 7, 2011
 Transitional forms between dinosaurs and birds
Views: 2621
Filesize: 70.16kB
Date: Jun 9, 2011
Features of the bird wing and feather
Views: 1531
Filesize: 54.37kB
Date: Jun 9, 2011
 Horns and antlers in mammals
Views: 1098
Filesize: 80.09kB
Date: Jun 9, 2011
 Taxonomic and evolutionary groupings leading to the jaguar
Views: 1805
Filesize: 78.7kB
Date: Jun 10, 2011
 How the study of genomes and proteomes can provide us with connections to different biological level
Views: 1619
Filesize: 91.62kB
Date: Jun 10, 2011
Diagrams showing the multiple energy shells and orbitals of a nitrogen atom
Views: 1552
Filesize: 109.13kB
Date: Jun 13, 2011
 Examples of hydrogen bonds and DNA
Views: 9485
Filesize: 77.07kB
Date: Jun 13, 2011
 Structure of water and ice
Views: 7026
Filesize: 84.57kB
Date: Jun 13, 2011
 Fluids inside and outside of cells
Views: 1316
Filesize: 70.72kB
Date: Jun 13, 2011
The pH scale and the relative acidities of common substances
Views: 4525
Filesize: 96.39kB
Date: Jun 13, 2011
 Wöhler and his crystals of urea
Views: 1053
Filesize: 107.64kB
Date: Jun 13, 2011
 Models for the electron orbitals and energy shells of carbon
Views: 1428
Filesize: 77.71kB
Date: Jun 13, 2011
 Nonpolar and polar bonds in an organic molecule
Views: 1416
Filesize: 35.09kB
Date: Jun 13, 2011
Structure of cholesterol and steroid hormones derived from cholesterol
Views: 1519
Filesize: 169.09kB
Date: Jun 13, 2011
 The factors that influence protein folding and stability.
Views: 4146
Filesize: 73.92kB
Date: Jun 13, 2011
 Spatial versus Temporal Photosynthesis
Views: 1589
Filesize: 434.58kB
Date: Jun 13, 2011
 Watson and Crick
Views: 1149
Filesize: 5.33kB
Date: Jun 13, 2011
Structure of a DNA strand
Views: 1382
Filesize: 102.88kB
Date: Jun 14, 2011
 The double-stranded structure of DNA
Views: 1208
Filesize: 94.69kB
Date: Jun 14, 2011
 A comparison of the sizes of various chemical and biological structures, and the resolving power of
Views: 5327
Filesize: 50.51kB
Date: Jun 14, 2011
 A comparison of electron and light microscope technologies
Views: 1408
Filesize: 66.96kB
Date: Jun 14, 2011
A comparison of transmission and scanning electron microscopy
Views: 1574
Filesize: 96.71kB
Date: Jun 14, 2011
 Compartments within (a) animal and (b) plant cells
Views: 1936
Filesize: 117.9kB
Date: Jun 14, 2011
 The nucleus and endomembrane system
Views: 3503
Filesize: 46.55kB
Date: Jun 14, 2011
 The nucleus and nuclear envelope
Views: 2751
Filesize: 82.54kB
Date: Jun 14, 2011
The Golgi apparatus and secretory pathway
Views: 1576
Filesize: 60.29kB
Date: Jun 14, 2011
 Formation and structure of a peroxisome
Views: 3679
Filesize: 69.49kB
Date: Jun 14, 2011
 Motor proteins and their interactions with cytoskeletal filaments.
Views: 3885
Filesize: 88.39kB
Date: Jun 14, 2011
 Cellular movements caused by the actions of flagella and cilia
Views: 1748
Filesize: 28.98kB
Date: Jun 14, 2011
Proteomes and their relationship to cell structure, function, and organization.
Views: 1387
Filesize: 155.63kB
Date: Jun 14, 2011
 Information flows from the nucleus to the cytoplasm and back.
Views: 1562
Filesize: 180.61kB
Date: Jun 17, 2011
 Animal cells and the extracellular matrix (ECM)
Views: 2706
Filesize: 215.52kB
Date: Jun 17, 2011
 Synthesis and assembly of collagen
Views: 1497
Filesize: 156.43kB
Date: Jun 17, 2011
Structures of glycosaminoglycans and proteoglycans
Views: 10662
Filesize: 80.54kB
Date: Jun 17, 2011
 Use of fluorescent molecules by Lowenstein and colleagues to determine the size of gap-junction chan
Views: 1405
Filesize: 169.89kB
Date: Jun 17, 2011
 Attachment of transmembrane proteins to the cytoskeleton and extracellular matrix of an animal cell.
Views: 4490
Filesize: 93.69kB
Date: Jun 20, 2011
 Structures of urea and diethylurea.
Views: 1316
Filesize: 10.81kB
Date: Jun 20, 2011
Function and structure of aquaporin
Views: 1964
Filesize: 123.86kB
Date: Jun 20, 2011
 Structure and function of the Na+/K+ pump.
Views: 1406
Filesize: 68.37kB
Date: Jun 20, 2011
 Breakdown of pyruvate and the attachment of an acetyl group to CoA
Views: 4250
Filesize: 96.4kB
Date: Jun 20, 2011
 The relationship between free energy and electron movement along the electron transport chain
Views: 4691
Filesize: 70.51kB
Date: Jun 20, 2011
The Racker and Stoeckenius experiment showing that an H+ electrochemical gradient drives ATP synthes
Views: 8543
Filesize: 85.09kB
Date: Jun 20, 2011
 The subunit structure and function of the ATP synthase
Views: 1326
Filesize: 99.85kB
Date: Jun 20, 2011
 Integration of protein, carbohydrate, and fat metabolism
Views: 1795
Filesize: 121.05kB
Date: Jun 20, 2011
 An overview of the two stages of photosynthesis: light reactions and the Calvin cycle
Views: 6332
Filesize: 140.96kB
Date: Jun 21, 2011
Structures and properties of pigment molecules
Views: 1437
Filesize: 61.03kB
Date: Jun 21, 2011
 The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th
Views: 1486
Filesize: 164.52kB
Date: Jun 21, 2011
 A closer look at the structure and function of photosystem II
Views: 1632
Filesize: 104.57kB
Date: Jun 21, 2011
 The synthesis of O2, ATP, and NADPH by the concerted actions of photosystems II and I
Views: 3128
Filesize: 124.87kB
Date: Jun 21, 2011
Homologous proteins in the electron transport chains of mitochondria and chloroplasts
Views: 1372
Filesize: 201.76kB
Date: Jun 21, 2011
 Leaf structure and its relationship to the C4 cycle
Views: 6338
Filesize: 82.39kB
Date: Jun 21, 2011
 A comparison of C4 and CAM plants
Views: 4205
Filesize: 74.87kB
Date: Jun 21, 2011
 The three stages of cell signalling: receptor activation, signal transduction, and a cellular respon
Views: 2083
Filesize: 66.5kB
Date: Jun 21, 2011
The activation of G-protein-coupled receptors and G proteins
Views: 1410
Filesize: 75.94kB
Date: Jun 21, 2011
 The function of a ligand-gated ion channel
Views: 1451
Filesize: 75.48kB
Date: Jun 21, 2011
 The synthesis and breakdown of cyclic AMP
Views: 1186
Filesize: 23.38kB
Date: Jun 21, 2011
 A signal transduction pathway involving diacylglycerol (DAG), inositol trisphosphate (IP3), and chan
Views: 2626
Filesize: 94.3kB
Date: Jun 21, 2011
Discovery of apoptosis in the adrenal cortex by Kerr, Wyllie, and Currie
Views: 1747
Filesize: 129.99kB
Date: Jun 21, 2011
 The Avery, MacLeod, and McCarty experiments that identified DNA as Griffith's transformation pr
Views: 7881
Filesize: 122.12kB
Date: Jun 23, 2011
 Hershey and Chase experiment showing that the genetic material of T2 phage is DNA
Views: 3557
Filesize: 92.02kB
Date: Jun 23, 2011
 Nucleotides and their components
Views: 1778
Filesize: 101.21kB
Date: Jun 23, 2011
The structure of a DNA strand
Views: 1204
Filesize: 85.75kB
Date: Jun 23, 2011
 Rosalind Franklin and X-ray diffraction applied to DNA wet fibres
Views: 9426
Filesize: 136.85kB
Date: Jun 23, 2011
 Watson and Crick and their model of the DNA double helix
Views: 6016
Filesize: 71.89kB
Date: Jun 23, 2011
 The Meselson and Stahl experiment showing that DNA replication is semiconservative
Views: 2593
Filesize: 162.25kB
Date: Jun 23, 2011
Nucleotides and their components
Views: 1274
Filesize: 101.21kB
Date: Jun 23, 2011
 Proteins that facilitate the formation and movement of a replication fork
Views: 1372
Filesize: 84.38kB
Date: Jun 23, 2011
 Synthesis of the leading and lagging strands
Views: 1352
Filesize: 264.27kB
Date: Jun 23, 2011
 Enzymatic features of DNA polymerase that account for its inability to copy one of the DNA strands a
Views: 1470
Filesize: 71.63kB
Date: Jun 23, 2011
The metabolic pathway that breaks down phenylalanine and its relationship to certain genetic disease
Views: 5962
Filesize: 121.17kB
Date: Jun 23, 2011
 Nirenberg and Leder's use of triplet binding assays to decipher the genetic code
Views: 9555
Filesize: 111.63kB
Date: Jun 24, 2011
 Comparison of small subunit rRNA gene sequences from three eukaryotes and three bacterial species
Views: 1443
Filesize: 99.17kB
Date: Jun 24, 2011
 Overview of points of control for gene regulation in (a) prokaryotes and (b) eukaryotes
Views: 1512
Filesize: 96.42kB
Date: Jun 24, 2011
Actions of regulatory transcription factors and small effector molecules
Views: 3335
Filesize: 72.88kB
Date: Jun 24, 2011
 Jacob, Monod, and Pardee's hypothesis for the function of the lacI region
Views: 2403
Filesize: 47kB
Date: Jun 24, 2011
 The experiment performed by Jacob, Monod, and Pardee to study a lacI constitutive mutant
Views: 6622
Filesize: 116.04kB
Date: Jun 24, 2011
 Effects of lactose and glucose on the expression of the lac operon
Views: 3972
Filesize: 74.16kB
Date: Jun 24, 2011
Negative control of a repressible set of genes: function of the trp repressor and corepressor in reg
Views: 1547
Filesize: 48.87kB
Date: Jun 24, 2011
 Deamination and mispairing of modified bases by a chemical mutagen.
Views: 2282
Filesize: 78.8kB
Date: Jun 25, 2011
 Formation and structure of a thymine dimer
Views: 3985
Filesize: 63.85kB
Date: Jun 25, 2011
 The experimental approach used by Masui and Markert to identify cyclin and cyclin-dependent kinase (
Views: 2506
Filesize: 151.21kB
Date: Jun 25, 2011
The progression and effects of cancer.
Views: 1204
Filesize: 72.34kB
Date: Jun 25, 2011
 The cell cycle and checkpoints
Views: 2689
Filesize: 44.99kB
Date: Jun 25, 2011
 A comparison between chromosomes found in a normal human cell and a cancer cell from the same person
Views: 1831
Filesize: 38.55kB
Date: Jun 25, 2011
 Structure of the nuclear matrix and its attachment to the 30-nm fibre
Views: 12642
Filesize: 60.2kB
Date: Jun 25, 2011
The importance of histones and scaffolding proteins in the compaction of eukaryotic chromosomes.
Views: 3114
Filesize: 156.91kB
Date: Jun 25, 2011
 Replication and compaction of chromosomes into pairs of sister chromatids.
Views: 1937
Filesize: 95.66kB
Date: Jun 25, 2011
 The eukaryotic cell cycle and cell division in an organism with six chromosomes.
Views: 5196
Filesize: 81.85kB
Date: Jun 25, 2011
 Micrographs showing cytokinesis in animal and plant cells
Views: 1850
Filesize: 125.84kB
Date: Jun 25, 2011
A comparison of alloploidy (seen in species hybrids) and new allopolyploid species.
Views: 7012
Filesize: 99.07kB
Date: Jun 25, 2011
 Morgan's crosses of red-eyed and white-eyed Drosophila
Views: 4539
Filesize: 109.16kB
Date: Jun 27, 2011
 The locations of genetic material in animal and plant cells.
Views: 1724
Filesize: 154.96kB
Date: Jun 27, 2011
 Plastid composition of egg cells from green, white, and variegated four-o'clock plants.
Views: 3472
Filesize: 110.88kB
Date: Jun 27, 2011
Random X-chromosome inactivation in a calico cat.
Views: 6321
Filesize: 152.63kB
Date: Jun 27, 2011
 Lytic and lysogenic cycles of bacteriophages.
Views: 13476
Filesize: 57.63kB
Date: Jun 27, 2011
 Experiment of Lederberg and Tatum demonstrating gene transfer in E. coli
Views: 4949
Filesize: 100.66kB
Date: Jun 27, 2011
 Molecular features of homeotic genes and proteins
Views: 1230
Filesize: 87.22kB
Date: Jun 28, 2011
Conservation and colinearity of homeotic genes
Views: 1184
Filesize: 58.68kB
Date: Jun 28, 2011
 Davis, Weintraub, and Lasser and the promotion of muscle cell differentiation in fibroblasts by the
Views: 1365
Filesize: 121.45kB
Date: Jun 28, 2011
 Normal and mutant homeotic gene action in Arabidopsis
Views: 1524
Filesize: 142.89kB
Date: Jun 28, 2011
 Step 2 of gene cloning: The actions of a restriction enzyme and DNA ligase to produce a recombinant
Views: 1648
Filesize: 123.42kB
Date: Jun 28, 2011
Fossil and modern stromatolites: evidence of autotrophic cyanobacteria.
Views: 1320
Filesize: 204.66kB
Date: Jun 29, 2011
 Charles Darwin and the voyage
Views: 1427
Filesize: 57.14kB
Date: Jul 12, 2011
 The evolution of an endemic island species from a mainland species.
Views: 1231
Filesize: 176.25kB
Date: Jul 12, 2011
 The Grants and natural selection of beak size among the medium ground finch.
Views: 1479
Filesize: 116.89kB
Date: Jul 12, 2011
Migration and gene flow.
Views: 6506
Filesize: 119kB
Date: Jul 12, 2011
 A comparison between anagenesis and cladogenesis: two patterns of speciation.
Views: 9388
Filesize: 42.68kB
Date: Jul 14, 2011
 Relationship between Hox gene number and body complexity in different types of animals.
Views: 1678
Filesize: 76.97kB
Date: Jul 14, 2011
 amino acids with single and three code
Views: 5265
Filesize: 26.74kB
Date: Jul 26, 2011
Ball and socket joint
Views: 2307
Filesize: 11.82kB
Date: Oct 16, 2011
 Physiology of the hand
Views: 1384
Filesize: 89.08kB
Date: Jan 22, 2013
 Adrenal Gland Hormones
Views: 6117
Filesize: 84.58kB
Date: Sep 3, 2012
 The domain structures of IgE and IgG
Views: 1224
Filesize: 111.34kB
Date: Sep 4, 2012
insect's compound eye, revealing photoreceptor cells, support cells and pigment cells
Views: 3793
Filesize: 306.51kB
Date: Sep 7, 2012
 Heliotropium (marine heliotrope) lower leaf surface, showing trichomes and a few stomata
Views: 2658
Filesize: 179.66kB
Date: Sep 7, 2012
 Needle and Thread
Views: 4615
Filesize: 81.77kB
Date: Sep 7, 2012
 Salt and Pepper
Views: 1073
Filesize: 106.81kB
Date: Sep 7, 2012
A dinoflagellate and diatom combined
Views: 999
Filesize: 84.43kB
Date: Sep 7, 2012
 Mouse trachea and its red blood cells
Views: 885
Filesize: 191.31kB
Date: Sep 13, 2012
 Mosquito Larva and Parasite
Views: 4134
Filesize: 117.08kB
Date: Sep 18, 2012
 Refined and raw sugar crystals
Views: 906
Filesize: 86.51kB
Date: Sep 24, 2012
Photosyntheis in a plant cell
Views: 2222
Filesize: 47.22kB
Date: Oct 7, 2012
 Biotechnology Companies and Fighting Cancer
Views: 1185
Filesize: 110.69kB
Date: Dec 29, 2012
 Ecosystem and Balance
Views: 1673
Filesize: 22.24kB
Date: Dec 29, 2012
 Human Ecology and Biology
Views: 25011
Filesize: 47.36kB
Date: Dec 29, 2012
Terms Used for Trunk and Limbs
Views: 914
Filesize: 369.69kB
Date: Aug 11, 2013
 Anatomical Charts Foot and Ankle
Views: 958
Filesize: 385.68kB
Date: Mar 28, 2013
 Stem cell division and differentiation
Views: 1055
Filesize: 50.26kB
Date: Mar 31, 2013
 Types and characteristics of stem cells for culture
Views: 2102
Filesize: 62.66kB
Date: Mar 31, 2013
Potential applications of embryonic and tissue specific adult stem cell in cellular and gene theraph
Views: 1292
Filesize: 401.6kB
Date: Mar 31, 2013
 Human embryonic stem cells stained with Tra-1-60 (green) - a stem cell marker and nestin (red), a ne
Views: 1088
Filesize: 1.2MB
Date: Apr 1, 2013
 Stem Cell Research Could Expand Clinical Use of Regenerative Human Cells
Views: 1014
Filesize: 57.81kB
Date: Apr 1, 2013
 Child development varies and is hard to predict
Views: 1116
Filesize: 9.39kB
Date: Apr 1, 2013
Human embryonic stem cell colony and iPS colony
Views: 1181
Filesize: 117.55kB
Date: Apr 1, 2013
 POSTERIOR AND ANTERIOR SHEEP HEART
Views: 2289
Filesize: 45.61kB
Date: Apr 8, 2013
 Penguin, South Georgia Island
Views: 855
Filesize: 65.54kB
Date: May 7, 2013
 Coelacanth Genes Mapped, "Living Fossil" Evolved Slowly
Views: 1043
Filesize: 48.09kB
Date: May 7, 2013
Barton Springs Salamander
Views: 774
Filesize: 20.47kB
Date: May 8, 2013
 Drugs and Human Behavior
Views: 1015
Filesize: 280.54kB
Date: Aug 7, 2013
 Drugs and Human Behavior
Views: 975
Filesize: 301.85kB
Date: Aug 7, 2013
 Population Interactions and Communities
Views: 838
Filesize: 397.24kB
Date: Aug 7, 2013
The autonomic nervous system with its sympathetic and parasympathetic divisions
Views: 889
Filesize: 219.61kB
Date: Aug 7, 2013
 Sacrum and Coccyx
Views: 570
Filesize: 268.46kB
Date: Aug 11, 2013
 Thorax from above and below
Views: 539
Filesize: 345.15kB
Date: Aug 11, 2013
 Radius and Ulna
Views: 833
Filesize: 282.61kB
Date: Aug 11, 2013
Right Hand
Views: 658
Filesize: 267.35kB
Date: Aug 11, 2013
 Right Hand from the Palmar Aspect
Views: 807
Filesize: 276.44kB
Date: Aug 11, 2013
 Right Hand Radial Aspect
Views: 753
Filesize: 233.45kB
Date: Aug 11, 2013
 Pelvis Male from side and above
Views: 800
Filesize: 285.5kB
Date: Aug 11, 2013
Right Tibia and Fibula
Views: 632
Filesize: 335.39kB
Date: Aug 11, 2013
 Muscles of Head and Neck
Views: 891
Filesize: 399.14kB
Date: Aug 12, 2013
 Muscles of Head and Neck Back
Views: 862
Filesize: 391.12kB
Date: Aug 12, 2013
 Muscles of Head and Neck Side
Views: 784
Filesize: 480.48kB
Date: Aug 12, 2013
Muscles of the right hand
Views: 823
Filesize: 363.15kB
Date: Aug 12, 2013
 Muscles of the right hand back view
Views: 882
Filesize: 380.41kB
Date: Aug 12, 2013
 Muscles of the right hand side view
Views: 948
Filesize: 270.2kB
Date: Aug 12, 2013
 MAO Inhibitors
Views: 700
Filesize: 128.93kB
Date: Sep 13, 2013
Mandibular fossa
Views: 656
Filesize: 8.36kB
Date: Dec 18, 2013
 Mandibular condyle
Views: 602
Filesize: 4.33kB
Date: Dec 18, 2013
 Mandibular Notch
Views: 543
Filesize: 8.6kB
Date: Dec 18, 2013
 Mandibular foramen
Views: 612
Filesize: 6.13kB
Date: Dec 18, 2013
Ramus of Mandible
Views: 709
Filesize: 7.66kB
Date: Dec 18, 2013
 Mandibular symphysis
Views: 609
Filesize: 8.77kB
Date: Dec 18, 2013
 liver and biliary systems
Views: 903
Filesize: 114.49kB
Date: Jan 2, 2014
 Proper Hand Washing
Views: 2236
Filesize: 119.08kB
Date: Feb 20, 2014
The nucleic acids DNA and RNA are made from chains of nucleotides.
Views: 3969
Filesize: 155.06kB
Date: Sep 8, 2014
 Frog muscle - depressor mandibulae, latissimus dorsi (labeled)
Views: 3089
Filesize: 7.12kB
Date: Oct 7, 2014
 Ranitidine and Cimetidine
Views: 3222
Filesize: 40.92kB
Date: Feb 21, 2016
 Evolution and Anthropology Vector Icon
Views: 492
Filesize: 94.02kB
Date: Jan 5, 2022
Kinesiology Vector Icon
Views: 512
Filesize: 24.58kB
Date: Dec 1, 2016
 Absorption & Stripping Design Random packing materials
Views: 521
Filesize: 133kB
Date: Jan 26, 2017
 An antigen-presenting dendritic cell (blue) interacting with a T cell (yellow)
Views: 573
Filesize: 371.98kB
Date: Sep 1, 2023
 Main components of the human endocrine system and the effects of their secretions
Views: 528
Filesize: 478.26kB
Date: Sep 8, 2023
Location of the hypothalamus and pituitary gland
Views: 91
Filesize: 235.47kB
Date: Sep 8, 2023
 Functional Regions of the Human Brain
Views: 113
Filesize: 153.76kB
Date: Sep 14, 2023
 Example of a coordinated interaction between skeletal muscle tissue and nervous tissue
Views: 539
Filesize: 156.97kB
Date: Sep 16, 2023
 Encrusting Lichen
Views: 86
Filesize: 429.42kB
Date: Oct 14, 2023
Meiosis I One diploid nucleus to two haploid nuclei
Views: 88
Filesize: 360.86kB
Date: Jan 29, 2024
 Meiosis II Two haploid nuclei to four haploid nuclei
Views: 116
Filesize: 404.51kB
Date: Jan 29, 2024
 Each enzyme functions best within a characteristic range of pH
Views: 51
Filesize: 133.09kB
Date: Jun 13, 2024
 An example of an allosteric effect
Views: 58
Filesize: 195.81kB
Date: Jun 13, 2024
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