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From Our Gallery
Enhance your visual learning  Download and share pictures with your free membership.
What better way to learn than with access to over 35,000 diagrams, photos, and illustrations.
 538
A model of the 70 ribosome, with mRNA and tRNA bound
 198
The three phases of phagocytosis
 2490
Chromosome territories in the cell nucleus
 729
Examples of drawings in each category of two object forms
 371
Development of the Dungeness crab (Cancer magister). The crabs live for 8 to 10 years.
 802
All human organ systems and their functions (Part 1)
 259
Structure of polypeptide chains
 262
Mouse Cell Nuclei During Meiosis
 410
Pollen on stigmata - blanket flower (Gaillardia grandiflora)
 409
Aphid and High Fluid Pressure
 4665
A closer look at the reproductive cycle of human immunodeficiency virus (HIV)
 378
Persistent Juvenile Traits in Salamanders
 340
Coelacanth
 1325
Balloon angioplasty
 295
Roundworm Body Plan
 284
The chromosome scaffold of a metaphase chromosome
 24124
The structure of the placenta
 596
Sea Star Body Plan
 368
Cacao Tree
 294
A marine flatworm
 524
A fly on a Venus Flytrap plant.
 2784
The muscle-spindle feedback circuit
 324
Earthworm anatomy
 417
Nonanthropoid Primates: Lemur
 376
Photo of a lancelet
 337
Action Potential Summary
 432
Hydrostatic Skeleton: Earthworm
 204
Evolution of internal membranes
 15877
The ovarian and uterine cycles in a human female.
 377
The photo is a cross-section of thickened human skin
 183
Oligodendrocytes
 185
Time Line for Life’s Origin and Evolution
 328
Spore Bearing Structures of Pilobolus
 450
Posterior pituitary function
 289
An Ediacaran Fossil
 824
Western rim of Endeavour Crater
 585
Cardiac conduction system
 390
The cascade of events by which the stroke-induced release of glutamate kills neurons.
 6839
Body plan of an echinoderm, as represented by a sea star.
 196
Asexual Reproduction
 431
A bird's skeleton
 249
The genetic code
 345
Salt grains up close
 214
Movement of acorns by blue jays allows gene flow between oak populations
 330
The compound eye of a deerfly
 4475
A comparison of the proteomes in human liver and skeletal muscle cells
 245
Amoeba, a single-celled heterotroph
 405
Cocaine’s Effect on the Brain
 6283
Tooth Anatomy
 304
Early Earth
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Calculating Simple Interest on a Variable Rate Loan
Cost-Volume-Profit Analysis
Straight, Variable, and Gradual Commission Calculations
Using the Modified Offset Method to Find the Area of Irregular Shapes
Differential Pay Schedule vs. Straight Piece Rate Pay Calculations
Inflation-Adjusted Annuity Calculation (Increasing Annuities)
Deriving the Present Value of Annuity Formula
Alcohol Content of a Shot Compared to a Beer
Volume of a Frustum (Derivation)
Calculating the Interest Rate in an Annuity (Using Excel)
Handling Partial Periods with Drop and Balloon Payments #finance #annuities
Future Value of Compound Interest Formula (How it Works and its Derivation)
Solving for the Number of Periods in an Annuity
Grade 6 Math Challenge: Average Speed 95% Get This Wrong!
Deriving the Geometric Series Sum Formula
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Consider an NBA superstar Kobe Bryant and one of your economics professors. Who is likely to receive more economic rent in his/her job? Explain your answer.
Quiz Me
The electric AIR pump is energized ________.
 
  A) Until the engine goes into closed loop B) For no longer than 4 minutes
  C) Either A or B D) Neither A nor B
Quiz Me
Trumpeter Swans
Trumpeter swans were once widespread and abundant in North America. However, a combination of heavy hunting pressure and habitat lost drastically 4 reduced the species’ population down to less than 70 individuals in the wild by...
Quiz Me
Of the following levels of planning the power for mandating programs rests with the:

▸ state legislature

▸ school district

▸ local school

▸ All of these
Quiz Me
Concerns about Assertive Discipline applications include
 
  a. authoritarian style and lack of research on child outcomes.
  b. lack of research on parental views.
  c. permissive approach and lack of stated...
Quiz Me
Acetylsalicylic acid, known as ASA, is the most commonly used pharmaceutical drug, with over 10 000 t manufactured in North America every year. ASA, C8H702COOH(s), is an organic acid like acetic acid and reacts with strong bases such as sodium...
Quiz Me
This book about the Chicago stockyards created a furor after its publication:
a.   The Jungle
b.   This Endangered Planet
c.   Silent Spring
d.   Moment in the Sun
Quiz Me
Michael is giving a presentation to the class. He is very excited and confident about it, but after he starts talking, he can see from the looks on his classmates’ faces that he is talking too loudly and gesturing too much. This is an example of...
Quiz Me
Over the years, the rate of judicial lawmaking has _____________.
a.   stayed about the same
b.   increased
c.   decreased
d.   fallen to nearly zero
Quiz Me
When compound I, C7H16, was treated with chlorine and light it yielded 3 monochlorination products that could be separated by...
Quiz Me
Regardless of culture, infant interaction and behavior is universally interpreted.
 
  Indicate whether the statement is true or false

Question...
Quiz Me
A force of 5.3 N is needed to hold on to an umbrella in a strong wind. If the air molecules each have a mass of 4.7 ×10-26 kg, and each one strikes the umbrella (without rebounding) with a speed of 2.0 m/s in the same direction, how many molecules...
Quiz Me
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