-
506997
Caption: The activation of the messenger cAMP (cyclic adenosine monophosphate) mediates the stimulatory effects of epinephrine in cells
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 15.28 MB
-
507131
Caption: Hemoglobin is a protein comprised of 4 polypeptide chains, each attached to a heme group composed of porphyrin and an iron atom
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 16.32 MB
-
481307
Caption: The process by which a gene is transcribed from DNA to RNA, and eventually forms a protein molecule.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 38.39 MB
-
481280
Caption: Phylogeny based on differences in the protein sequence of cytochrome c in organisms ranging from Neurospora mold to humans.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 36.87 MB
-
432899
Caption: Peanuts spelling nuts
Artist: Todd Davidson
Release: Not Applicable
File Size: 65.54 MB
-
12799
Caption: Illustration of barbecue grill
Artist: Jody Winger
Release: Not Applicable
File Size: 80.66 MB
-
481221
Caption: Two phylogenies based on the amount of change in macromolecules.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.02 MB
-
481218
Caption: DNA wraps around histone proteins to form nucleosomes, which condense into a chromatin fibre, which condenses into a chromosome.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 26.63 MB
-
506907
Caption: A molecular view of the cell membrane highlighting phospholipids, cholesterol, and intrinsic and extrinsic proteins
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 9.38 MB
-
7230
Caption: Milk carton and glass of milk
Artist: Chad J. Shaffer
Release: Not Applicable
File Size: 50.47 MB
-
481007
Caption: The basic structure of a typical T-cell antigen receptor
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 36.16 MB
-
481212
Caption: Complement proteins aid the destruction of pathogens by piercing their outer membranes or making them attractive to macrophages.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.42 MB
-
508786
Caption: Labeled shish kabobs of meat and fresh vegetables
Artist: Dante Terzigni
Release: Not Applicable
File Size: 52.22 MB
-
481139
Caption: Stimulation of immune response by activated helper T cells.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 13.29 MB
-
481181
Caption: Schematic representation of some proteins of the immunoglobulin (Ig) superfamily.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.70 MB
-
481324
Caption: The Golgi apparatus, or complex, plays an important role in the modification and transport of proteins within the cell.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 17.09 MB
-
480994
Caption: The endoplasmic reticulum plays an important role in the biosynthesis, processing, and transport of proteins and lipids.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 18.60 MB
-
481531
Caption: DNA replication in higher organisms begins at multiple origins of replication and progresses in two directions.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.59 MB
-
481312
Caption: Receptor-mediated endocytosis enables cells to ingest molecules such as protein that are necessary for normal cell functioning.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 70.36 MB
-
481049
Caption: The hybrid cells developed in the artificial production of monoclonal antibodies produce large amounts of the desired antibody.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.46 MB
-
481259
Caption: Evolutionary rates of three proteins: fibrinopeptides (very fast), hemoglobin (intermediate), and cytochrome c (slow).
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 3.19 MB
-
481115
Caption: Point mutations. How changes in one nucleic acid of a triplet lead to different amino acids in the protein.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 36.20 MB
-
481383
Caption: Exocytosis, a process for primary active transport across the cell membrane.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 15.28 MB
-
481222
Caption: The five main classes of antibodies (immunoglobulins): IgG, IgA, IgD, IgE, and IgM.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 27.63 MB
-
481340
Caption: In semiconservative DNA replication an existing DNA molecule separates into two template strands to which new nucleotides align.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 31.01 MB
-
481295
Caption: The structure of an antibody molecule represents the dramatic rearrangements of DNA that occur in the immune systems of mammals.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 40.75 MB
-
12411
Caption: Puzzle with healthy food items
Artist: Doug Ross
Release: Not Applicable
File Size: 52.98 MB
-
143848
Caption: A drawing of a turkey ready to be served
Artist: Jim Dandy
Release: Not Applicable
File Size: 59.19 MB
-
481361
Caption: Variable and constant domains in the light (L) and heavy (H) chains of an antibody molecule, includes disulfide bonds (-S-S-).
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 39.58 MB
-
12880
Caption: Illustration of man barbecuing
Artist: Jody Winger
Release: Not Applicable
File Size: 24.61 MB
-
481502
Caption: Types of transport across the cell membrane include simple diffusion, facilitated diffusion, and primary active transport.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 7.75 MB
-
83513
Caption: Piggy Bank With Mouths
Artist: Yves Lefevre
Release: Not Applicable
File Size: 52.53 MB
-
514047
Caption: Pile of food on scale
Artist: Alberto Ruggieri
Release: Not Applicable
File Size: 79.98 MB
-
315177
Caption: Steak dinner and red wine
Artist: Coco Masuda
Release: Not Applicable
File Size: 52.32 MB
-
510239
Caption: Kidney bean (Phaseolus vulgaris)
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 13.74 MB
-
495472
Caption: Plate divided by food groups
Artist: Phil Scheuer
Release: Not Applicable
File Size: 59.54 MB
-
84279
Caption: Light bulb split in half like an egg
Artist: Yves Lefevre
Release: Not Applicable
File Size: 52.53 MB
-
512922
Caption: Eggs on conveyor belt moving through barn shaped as chicken
Artist: Vance Vasu
Release: Not Applicable
File Size: 50.21 MB
-
24131
Caption: Salad and sandwich with drink
Artist: Leon Zernitsky
Release: Not Applicable
File Size: 30.90 MB
-
510816
Caption: Illustrative representation of poultry business
Artist: Fanatic Studio
Release: Not Applicable
File Size: 62.00 MB
-
507166
Caption: Three bottles of milk and hobbling old person
Artist: Louise Grant
Release: Not Applicable
File Size: 50.45 MB
-
123475
Caption: Person standing on world of food
Artist: Mark Weber
Release: Not Applicable
File Size: 58.12 MB
-
83639
Caption: Montage of kitchen items
Artist: Mike Quon
Release: Not Applicable
File Size: 71.31 MB
-
495487
Caption: Woman reorganizing food pyramid
Artist: Phil Scheuer
Release: Not Applicable
File Size: 56.66 MB
-
84461
Caption: Small chicken standing on large egg
Artist: Igor Kopelnitsky
Release: Not Applicable
File Size: 32.43 MB
-
83303
Caption: Woman Juggling Healthy Diet
Artist: Stephanie Carter
Release: Not Applicable
File Size: 61.86 MB
-
512901
Caption: Couple looking at large eggs cracking
Artist: Vance Vasu
Release: Not Applicable
File Size: 50.21 MB
-
83685
Caption: Woman posing with her cat
Artist: Kari Van Tine
Release: Not Applicable
File Size: 61.34 MB
-
482057
Caption: Protein containing bacteriochlorophyll
Artist: Laguna Design
Release: Not Applicable
File Size: 50.47 MB
-
482189
Caption: DNA-binding protein
Artist: Laguna Design
Release: Not Applicable
File Size: 50.47 MB
-
481898
Caption: Human Papilloma Virus Protein
Artist: Laguna Design
Release: Not Applicable
File Size: 53.64 MB
-
481922
Caption: Green fluorescent protein
Artist: Laguna Design
Release: Not Applicable
File Size: 53.64 MB
-
481941
Caption: Human TATA Protein
Artist: Laguna Design
Release: Not Applicable
File Size: 53.64 MB
-
482120
Caption: Human prion protein
Artist: Laguna Design
Release: Not Applicable
File Size: 53.64 MB
-
481950
Caption: Twitching motility protein PilT
Artist: Laguna Design
Release: Not Applicable
File Size: 50.47 MB
-
482053
Caption: SARS coronavirus S2 fusion protein
Artist: Laguna Design
Release: Not Applicable
File Size: 53.64 MB
-
482187
Caption: Bovine heterotrimeric G-protein transducin
Artist: Laguna Design
Release: Not Applicable
File Size: 50.47 MB