• Your 24/7 Study Community
    Let our members and experts help you today.
    Ask a question on your homework, textbook problem or any subject topic.
    Answer other members' questions for self-practice, posting credits, and goodwill.
  • Learn more...  What type of user are you?
    High School Student College Student Parent Educator Subject Enthusiast
  • Ace Your Classes
    with the help of Biology Forums' online study community...
    ...where you can find real help from students, educators, and subject enthusiasts.
    It's free!
    Join Today
Who Are We?
Biology Forums - Study Force is a global community comprised of students, educators, and enthusiasts helping each other understand how to solve problems in sciences, mathematics, business, nursing, humanities, and many more subjects.
Q and A Experts
Gallery
Study Resources
Dictionary
We provide access to various types of study material, including textbook solutions, topic notes, sample problems, illustrations, and practice exams that are created by us, indexed from the web, or contributed by our members.
Blogs
Video Tutorials
Flashcards
Textbook Solutions
Our tools, content, and community empower students to push the limits of their learning capabilities.
4.8M
Total Posts
1.9M
Total Topics
24.1K
Members Registered this Year
0
Guests Browsing
0
Members Online
0
Registrations Today
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.
 1432
Top down view of Olympus Mons, the highest known mountain in the solar system
 29730
The bronchial tree
 1572
Balloon angioplasty
 1167
Famous People with Parkinson's Disease
 534
Control of Respiration
 730
Hydrostatic Skeleton: Earthworm
 551
The compound eye of a deerfly
 867
Persistent Juvenile Traits in Salamanders
 597
Tree Rings: Pine
 1628
Charles Darwin and the voyage
 1487
Bullet Ant
 1157
Joint anatomy.
 701
Early growth of corn (Zea mays), a typical monocot.
 1650
Tissue Repair, Aging, and Disorders
 487
A Mitochondrion
 1259
Phobos in color by Mars Reconnaissance Orbiter - HiRISE
 573
Lamprey
 1125
Citheronia regalis
 471
Asexual Reproduction
 645
A Bird Egg
 5278
Major structures of the human brain.
 854
Structures of the Human Eye
 471
Eucalyptus robusta
 572
American Toad
 680
Ionotropic receptor
 518
Loxioides bailleui
 686
The mercury cycle
 636
Early Earth
 700
Posterior pituitary function
 571
Genetically Modified Chicken
 1041
Fossil Skeleton: Ichthyosaur
 1396
Spider (tarantula)
 864
Placoderm with Paired Fins
 1102
Scorpion
 731
Loss of a Shoot Tip Ends Dormancy in Lateral Buds
 848
Polyploidy increases fruit size
 913
Benign and malignant neoplasms
 820
Evolutionary conservation of chromosome synteny
 750
Nonanthropoid Primates: Lemur
 979
Imaginal disks in the development of Drosophila
 548
Lichen Structure
 5619
Ancient Warming Shrunk Horses to Housecat Size
 1275
Micrograph and graphic of a motor neuron
 17573
Diagram of the life cycle of Plasmodium falciparum, the causative agent of malaria
 574915
Insect Spy Drone
 504
Daphnia pulex
 1100
Viking Lander 1 site February 1978.
 77212
Generalized flower structure.
 519
Genes on chromosomes
 741
A sea star
Our Videos are Simple, Yet Effective
Skip the theory  The best way to learn is by watching tons of video examples.
Get right to answering questions with step-by-step explanations in HD quality!
Automotive Math: Wire Gauge Size and Ampacity
Automotive Math: Using Ohm's Law
Automotive Math: Calculating Engine Displacement (Given Bore and Stroke)
Automotive Math: Calculating Rocker Arm Ratio and Total Valve Movement
Automotive Math: Calculating Camshaft Lobe Lift
Automotive Math: Reading a Disc Brake Micrometer
Automotive Math: Calculating Driveline Ratio and Tire Diameter
Automotive Math: Calculating Ride Height
Automotive Math: Calculations Involving Wheel Alignment Angles (Cross-camber, Cross-caster)
Automotive Math: Calculating Stopping Distance Rates
Automotive Math: Calculate Tire Height Using the Aspect Ratio
Square and Multiply Algorithm
Calculate the perimeter of the composite rectilinear shape #mathpuzzle
Man-in-the-Middle Attack on D-H Key Exchange
Reducing Ratios with Terms that are Decimals / Fractions
Online Flashcards
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.
A child on a playground swing is swinging back and forth (one complete oscillation) once every four seconds, as seen by her father standing next to the swing. At the same time, a spaceship is hurtling by at a speed close to the speed of light....
Quiz Me
What should be done if a connector terminal becomes corroded?

▸ Replace the individual terminal with a new one.

▸ Replace the wiring harness.

▸ Replace all the terminals in the connector with new ones.
Quiz Me
Greta has lost her driver's license because she can no longer pass the vision test. Rather than feeling bad about her lost abilities, she has simply adjusted to this new circumstance by selling her car, getting a bus pass, and using a taxi service...
Quiz Me
Queen singer Freddie Mercury modeled his visual image after
a.   Elvis Presley.
b.   Elton John.
c.   Little Richard.
d.   Liza Minelli.
Quiz Me
Store manager Karen wakes up the morning after Thanksgiving, knowing that today will be so exciting that she will be extra motivated and productive. Karen is therefore facing a challenge stressor.
 
  Indicate whether the...
Quiz Me
How did the Catholic religion change in the United States in the 1970s?
 
  A. It became more nationalized.
  B. It became more aligned with government.
  C. It became more conservative than ever.
 ...
Quiz Me
Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.15 kJ are released per gram...
Quiz Me
Ozone (O3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (NO). (Nitrogen dioxide is also produced in the reaction.)  What is the enthalpy change when 8.50 L of ozone at a pressure of 1.00 atm and...
Quiz Me
All elements in their standard state have an enthalpy of formation equal to zero.

▸ true

▸ false
Quiz Me
Statistically, which of the following males is MOST likely to exhibit transvestic fetishism?
      a.   a single, openly gay male who cross dresses to attract a partner   
Quiz Me
Which condition is most likely to result in ambiguous external genitalia?

▸ Androgen insensitivity

▸ Congenital adrenal hyperplasia (CAH)

▸ Turner's syndrome

▸ Klinefelter's syndrome
Quiz Me
Which of the following groups is most closely identified with soul jazz?
 
  a) Dave Brubeck Quartet
  b) John Coltrane Classic Quartet
  c) Adderley Brothers Quintet
  d) Jazz Messengers
Quiz Me
We're Social
Follow us on your favorite social media platform