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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.
 365
Typical leaf structure of eudicots (left) and monocots (right).
 8597
The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
 251
Turtle Skelton
 580
Structure of a woody stem
 187
Bladderwrack (Fucus vesiculosus)
 340
Evolutionary Tree for Chordates
 94
DNA Sequencing
 231
Ciliate Structure: Paramecium
 1071
Top down view of Olympus Mons, the highest known mountain in the solar system
 77
Nondisjunction
 328
Pollen on stigmata - mallow (Malva neglecta)
 277
Relaxed and supercoiled DNA molecules
 435
Female burnet moths (Zygaena filipendulae) perch on purple blossoms
 298
Nonanthropoid Primates: Lemur
 6042
Testing the reducing atmosphere hypothesis for the origin of life - the Miller and Urey experiment.
 3735
Bone Scans and Nuclear medicine
 523
Indricotherium
 243
A Bird Egg
 102
Alfred Wallace
 131
Fossil Skeleton: Ichthyosaur
 459
Life cycle of a club fungus having two mating strains of hyphae
 270
Scarlet hood mushroom (Hygrophorus)
 229
Life cycle of the beef tapeworm (Taenia saginata).
 430
Dispersal Routes of Homo sapiens
 139
Sympatric Speciation in Wheat
 84
Bacteriophages
 54
Mutations in the Beta Globin Gene
 229
Evolutionary conservation of chromosome synteny
 110
Outline of Meiosis II
 400
Major muscles of the human musculoskeletal system
 865
Solar Eclipse
 554
Spider (tarantula)
 146
High in the Andes, a scientist measures the stride of a carnivorous dinosaur
 268
Evolution of hominids
 229
Karenia brevis
 356
Cocaine’s Effect on the Brain
 5585
Types of variation in chromosome number.
 846
Citheronia regalis
 517
Imaginal disks in the development of Drosophila
 649
A bully whippet
 11019
Examples of epithelial tissue.
 312
Use of Flight Muscles
 181
Structure of polypeptide chains
 230
Wasp in Amber
 215
Types of Synapses
 272
The compound eye of a deerfly
 2399
Chromosome territories in the cell nucleus
 2985
From left to right: Size development, biometrical changes in the cranium, reduction of toes ...
 129
Trichomonas vaginalis
 626
Anthrax bacteria (Bacillus anthracis)
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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)
When in Rome (a tutorial on Roman numerals)
Online Flashcards
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Question 1.Prior to modern anesthesiology, what is one method physicians used to deaden a surgical patient's pain?

▸ patients were hypnotized

▸ patients were given barbiturates

▸...
Quiz Me
A fuel tank expansion chamber is designed to be what percentage of the tank capacity?
A) 2-5%      B) 25-30%      C) 10-20%      D) None of these
Quiz Me
Alexander, age 30, lost consciousness during a car accident. His doctor said that he suffers from retrograde amnesia. Alexander has a memory loss for events that occurred
a. shortly before his accident.
Correct: The process of consolidation...
Quiz Me
The rate of markup on the cost of vaping pens in a retailer is 125% because of the large losses from theft. What is the rate of markup on selling price?
Quiz Me
Technician A says that temperature is measured in degrees. Technician B says that heat is measured in calories.  Which technician is correct?
A) Technician A      B) Technician B      C) Both technicians  ...
Quiz Me
Interpersonal conflict occurs in all of the following situations EXCEPT
 
  A) when people are interdependent.
  B) when people perceive their goals to be incompatible.
  C) when people perceive each other as...
Quiz Me
Gottschalk wrote Union in order to __________.
 
  a) galvanizeSouthernsentiment in support of the war
  b) memorialize the culture of the Old South
  c) give Franz Liszt a chance to display his virtuosity
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
What are two culinary skills that are required to make a good sandwich?
Quiz Me
A home builder requires payments of $15,000, $20,000, and $100,000 in 90, 120, and 150 days, respectively, from today. What is the value of the contract today if the payments are discounted to yield a 7.6% rate of return?
Quiz Me
Order: DTIC-Dome (dacarbazine) 250 mg/m IV for five days.

The label on the vial reads 100 mg, and the manufacturer's directions states to reconstitute with 9.9 mL of sterile water for injection, yielding a strength of 10 mg/mL,...
Quiz Me
If the US$ strengthens by 2% relative to the euro (US$1.00 = €0.7643), what will be the new value for the euro per US$1.00?

▸ €0.7795 per US$1.00

▸ €0.7796 per US$1.00

▸ €0.7319 per US$1.00
Quiz Me
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