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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.
 361
Sir Isaac Newton
 359
A bird's skeleton
 319
The photo is a cross-section of thickened human skin
 135
Time Line for Life’s Origin and Evolution
 401
Trilateration GPS
 374
Typical leaf structure of eudicots (left) and monocots (right).
 85
Gregor Mendel
 380
Famous People with Parkinson's Disease
 264
Hydrozoan
 350
The cascade of events by which the stroke-induced release of glutamate kills neurons.
 140
Plasmodium, a protist pathogen that causes malaria
 245
Karenia brevis
 179
Characteristics of Some Protist Groups
 285
Relaxed and supercoiled DNA molecules
 272
Action Potential Summary
 336
Pollen on stigmata - mallow (Malva neglecta)
 8642
Pancreatitis. Inflammation of the pancreas may be the result of a bacterial infection, trauma, or ch
 226
A marine flatworm
 4537
Variation in shape and length of nerve cells.
 226
An Ediacaran Fossil
 474
Life cycle of a club fungus having two mating strains of hyphae
 246
Evolutionary conservation of chromosome synteny
 129
Infected Tobacco Leaves by a Virus
 119
Evolutionary Relationships Among Honeycreepers
 11716
Hormonal control of parturition.
 105
DNA Sequencing
 434
Autonomic nerves and their effects
 137
Trichomonas vaginalis
 8653
Stages of transcription
 407
Classification of bones according to shape
 271
Spore Bearing Structures of Pilobolus
 259
American Toad
 324
Use of Flight Muscles
 2452
Paranasal sinuses are part of the upper respiratory system.
 5966
A large female tiger shark (Galeocerdo cuvier)
 239
Ciliate Structure: Paramecium
 348
Structures of the Human Eye
 3911
Mosquito Larva and Parasite
 385
Posterior pituitary function
 3314
The Sun in false-color ultraviolet image
 875
Solar Eclipse
 1093
The Structures of the Retina
 510
Sea Star Body Plan
 143
Fossilized Footprint: Therapod
 5184
Ancient Warming Shrunk Horses to Housecat Size
 242
Wasp in Amber
 128
Asexual Reproduction
 314
Photo of a lancelet
 123
Overview of translation
 449
Female burnet moths (Zygaena filipendulae) perch on purple blossoms
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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
Solving Promissory Note Problems - Calculating Discounting Time
Treasury Bill Calculations (T-bills)
Calculating Present Value of Annuity Due
Finance Trick to Paying off Your Mortgage Faster
Ordinary Simple Annuity Formula (How it Works and its Derivation)
Cavalieri's Indivisibles and the Area of a Circle
Calculating Real After Tax Interest Rate
Discount Loans Explained (when interest is paid upfront)
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Study, learn, and test youself  Whether you want to memorize every bone in the body or prepare for the upcoming MCAT, our web-based flashcard maker has you covered.
Today, most experts __________.
A) view the mid-adult transition as stagelike, as Levinson’s and Vaillant’s theories indicate
B) reject Levinson’s and Vaillant’s theories and contend that the midlife transition does not exist
Quiz Me
First Republic Bank makes many loans to individuals by discounting the face value of the loan. The borrower gets the proceeds. For the two loans below, determine the amount of the discount, the proceeds, and the actual interest rate which is based on...
Quiz Me
Which of the following is not related to the expansion of family therapy research in the 1990s?
 
  a. increased funding by the National Institute of Mental Health
  b. increased funding by the National Institute of...
Quiz Me
A 10.0-kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall and reaches to a height of 2.10 m, as shown in the figure. The base of the ladder rests on a rough...
Quiz Me
In a simple planetary gearset, what does the gearset produce when the planetary carrier is held stationary?

▸ Forward reduction

▸ Forward overdrive

▸ Direct drive

▸ Reverse
Quiz Me
In a simple planetary gearset, what does the gearset produce when the planetary carrier is held stationary?

▸ Forward reduction

▸ Forward overdrive

▸ Direct drive

▸ Reverse
Quiz Me
Identify the LEAST accurate statement about physical fitness.
A) Endurance, speed, agility, coordination, reaction time, strength, flexibility and balance are a part of being fit.
B) Time spent in physical activity has a negative effect on...
Quiz Me
Where were the cutting-edge bebop musicians playing in the late 1940s?
 
  a. in Kansas City casinos and nightclubs
 b. in the ballrooms and dance halls of Harlem
 c. in nightclubs on West Fifty-Second Street...
Quiz Me
Shown below are the reactions occurring in the direct methanol fuel cell (DMFC).

   I.   2 CH3OH(aq) + 2 H2O(l) → 2 CO2(g) +12 H+(aq) +12 e-
   II.   3 O2(g) + 12 H+(aq) +...
Quiz Me
The pediatric client is ordered procainamide hydrochloride (Pronestyl) 3–6 mg/kg to a maximum of 100 mg/dose. What would be a safe dosage for the client who weighs 35 kg?
1. 105–210 mg
2. 100 mg
3. 5.8–11.67 mg
4....
Quiz Me
A landlord rents his rat-infested apartment for $700 per month for a total of twelve months this year. What happens to GDP?
A) It increases by $8,400.
B) It increases by the difference between the rent charged and the price of any...
Quiz Me
Which saxophonist was the featured soloist in a number of all-girl bands?
 
  a. Violet Burnside
 b. Jimmy Dorsey
 c. Billie Holiday
 d. Mary Lou Williams
Quiz Me
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