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From Our Gallery
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What better way to learn than with access to over 35,000 diagrams, photos, and illustrations.
 156
Human urinary system
 5288
Types of variation in chromosome number.
 51
Primate skin
 3546
Nuclear medicine. Bone scan produced after injection of a radioactive substance into the body.
 5906
Negative feedback as a mechanism by which homeostatic control systems operate.
 193
China has relied on cheap coal to meet its demand for energy
 102
Female burnet moths (Zygaena filipendulae) perch on purple blossoms
 1336
Muscle Tissue Components
 60
Root Hairs
 278
Reorganization of the rat motor cortex following transection of the motor neurons that control ...
 4915
Toucan uses beak to keep it cool
 270
Ethylene Production During Strawberry Ripening
 73420
Generalized flower structure.
 207
Cocaine’s Effect on the Brain
 25
Body plan of a tomato plant
 83
Salt grains up close
 14
Some skeletal differences between a knuckle-walking gorilla and a bipedal human
 3110
The Sun in false-color ultraviolet image
 414
Male and female Lions (Panthera leo)
 277
A model of the 70 ribosome, with mRNA and tRNA bound
 123
Bug depositing fertilized eggs on a pine needle
 110
Early growth of corn (Zea mays), a typical monocot.
 10
Lamprey
 62
Embryonic development of shepherd’s purse (Capsella), a eudicot
 1087
Getting Connected
 1069
Charles Darwin and the voyage
 57
The photo is a cross-section of thickened human skin
 33
Root uptake of soil water
 93
Action Potential Summary
 15096
The ovarian and uterine cycles in a human female.
 15229
The alimentary canal of birds.
 54
Epicatechin
 302
Anthrax bacteria (Bacillus anthracis)
 6562
Body plan of an echinoderm, as represented by a sea star.
 50
Structures of the Human Eye
 2794
From left to right: Size development, biometrical changes in the cranium, reduction of toes ...
 74
Neuron and Astrocytes
 8248
Pancreatitis. Inflammation of the pancreas may be the result of a bacterial infection, trauma, or ch
 339
Hypersensitive Response
 69
Location and organization of the spinal cord
 101
Inflammation
 104
Trichomes are hairs or other fine outgrowths of epidermal cells
 29887
General Characteristics of Nervous Tissue
 192
Example of inflammation as a response to bacterial infection.
 9
Photo of a lancelet
 355
Examples of drawings in each category of two object forms
 19
Typical leaf structure of eudicots (left) and monocots (right).
 3437
Actions of flexors and extensors.
 31844
A simplified food web from an African savannah ecosystem.
 4214
A comparison of the proteomes in human liver and skeletal muscle cells
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On an SSD, a named rectangular box represents what?
 a. A class
 b. An object
 c. A swim lane
 d. A note to explain something
Quiz Me
Calculate the variance of a sample for which n = 5,
Quiz Me
Imagine you are sailing a yacht across the Caribbean. You have to sail through a shallow lagoon in order to reach port at an island ahead of you. It is night time, and you look up to observe a "quarter moon," such as the one pictured...
Quiz Me
Before disassembling an alternator ________ the case.
 
  A) Acid dip B) Mark C) Wash D) Paint
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On New Year's Day, thousands of Canadians celebrate with a "polar bear" swim. They jump into an ice-cold body of water at a lake or seaside....
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Electromagnetic radiation with a wavelength of 531 nm appears as green light to the human eye. The energy of one photon of this light is 3.74 × 10-19 J. Thus, a laser that emits
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The vapor pressures of pure propyl alcohol and isopropyl alcohol are 21.0 mmHg and 45.2 mmHg, respectively, at 25 °C. What is the composition of the vapor in equilibrium with a propyl alcohol - isopropyl alcohol solution in which the mole fraction...
Quiz Me
Three 1.00-L flasks at 25°C and 725 torr contain the gases CH4 (flask A), CO2 (flask B), and C2H6 (flask...
Quiz Me
On June 1, 2017, Zander Services issued $40,000 of 13% bonds that mature in five years for $57,000. The bonds pay semiannual interest payments on June 30 and December 31 of each year. On December 31, 2017, what is the total amount paid to...
Quiz Me
Marty’s dad expresses his love and delight whenever Marty brings home good grades on his report cards. On those rare occasions Marty brings home bad grades, his dad expresses extreme disappointment, often refusing to talk to his son. According to...
Quiz Me
SO2Cl2 decomposes in the gas phase by the reaction

SO2Cl2(g) -> SO2(g) + Cl2(g)

The reaction is first order in SO2Cl2 and the rate constant is 3.0 x 10
Quiz Me
An uncharged metal sphere is placed on an insulating puck on a frictionless table. While being held parallel to the table, a rod with a charge q is brought close to the sphere, but does not touch it. As the rod is brought in, the sphere
Quiz Me
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