• 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
61.7K
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.
 5582
Types of variation in chromosome number.
 106
Genes on chromosomes
 28784
Comparative structure of arteries, capillaries, and veins.
 15752
The ovarian and uterine cycles in a human female.
 140
Sketch of Euglena gracilis
 8624
Pancreatitis. Inflammation of the pancreas may be the result of a bacterial infection, trauma, or ch
 258
Action Potential Summary
 366
Side view of a jumping spider making a leap
 389
Trilateration GPS
 179
The chromosome scaffold of a metaphase chromosome
 476
The human brain
 402
Human urinary system
 399
James Watson and Francis Crick’s metal-and wire model of DNA
 227
Insect Body Plan: Grasshopper
 3455
Cross section of the wrist showing tendons and nerves involved in carpal tunnel syndrome.
 297
Cacao Tree
 238
An 8-week-old fetus
 394
Major muscles of the human musculoskeletal system
 166
Characteristics of Some Protist Groups
 361
Anatomy of a seed. Left, corn (Zea Mays), a monocot; right, pea (Pisum sativum), a eudicot
 5564
The vertebrate endoskeleton.
 115
Infected Tobacco Leaves by a Virus
 31103
General Characteristics of Nervous Tissue
 91
Benign and malignant neoplasms
 179
Genetically Modified Chicken
 340
Evolutionary Tree for Chordates
 1085
The Structures of the Retina
 3303
The Sun in false-color ultraviolet image
 518
Ethylene Production During Strawberry Ripening
 311
Main components of the human endocrine system and the effects of their secretions
 1296
Getting Connected
 29052
The bronchial tree
 2982
From left to right: Size development, biometrical changes in the cranium, reduction of toes ...
 355
Cocaine’s Effect on the Brain
 124
Loxioides bailleui
 274
Some skeletal differences between a knuckle-walking gorilla and a bipedal human
 940
Phobos in color by Mars Reconnaissance Orbiter - HiRISE
 393
Classification of bones according to shape
 1446
Oxidative phosphorylation
 323
Representatives of major orders of placental mammals
 235
Structure of a flight feather
 342
The cascade of events by which the stroke-induced release of glutamate kills neurons.
 237
Painting of a Jurassic scene
 259
Scorpion
 142
Red alga, a multicelled autotroph
 83
Bacteriophages
 174
Example of cnidocyte action
 673
Enceladus
 222
Fruit Development
 316
Early growth of corn (Zea mays), a typical monocot.
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!
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)
Synthetic Division when Denominator is 2x−3 [FIXED]
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.
You see a notice recruiting participants for an experiment that will use rTMS.  If you participated in such a study, you should expect that
A) you will be expected to make decisions with others in a group.
B) a series of words will...
Quiz Me
You see a notice recruiting participants for an experiment that will use rTMS.  If you participated in such a study, you should expect that
A) you will be expected to make decisions with others in a group.
B) a series of words will...
Quiz Me
Ann is waiting to be recalled after a layoff. Bill also has no job at the moment and is not searching for one. Who is officially "unemployed"?
A) Ann
B) Bill
C) Ann and Bill
D) neither Ann nor Bill
Quiz Me
Mayfair Fashions has a $90,000 line of credit from the Bank of Montreal. Interest at prime plus 2% is deducted from Mayfair's chequing account on the 24th of each month. Mayfair initially drew down $40,000 on March 8 and another $15,000 on...
Quiz Me
Research suggests that middle schools should use:
A) rote learning.             B) a task mastery structure.
C) a performance goal structure.       D)...
Quiz Me
Herald Inc., a French newsprint manufacturer, is geared towards international markets but does not have specific domestic and international divisions. This firm is a(n)
A) multinational firm.
B) purely domestic firm.
C) customs...
Quiz Me
If Chuck is a stereotypical male, he will most likely be ______, but NOT ________.
 
  A) artistic; self-confident
  B) understanding; dominant
  C) emotional; expressive
  D) self-confident;...
Quiz Me
...which the [OH-] is 1.0 x 10^-2 M. Some Fe(OH)2 precipitates. The value of Ksp for Fe(OH)2 = 8.0 x10^-10.

A. Assuming that the hydroxide is 1.0 x 10^-2 M, calculate the concentration of Fe2+ ions in the solution.

B. A battery...
Quiz Me
The transaxle drive chain can be re-installed in any orientation.
A) True      B) False
Quiz Me
Technician A says a special tool can be used to depress the servo spring for servo disassembly. Technician B says to note the accumulator spring position during disassembly. Which technician is correct?
A) Technician A only    ...
Quiz Me
Jacques received the proceeds from an inheritance on March 15. He wants to set aside, in a term deposit on March 16, an amount sufficient to provide a $45,000 down payment for the purchase of a home on November 1. If the current interest rate on...
Quiz Me
Using a digital video camera to record the 'egg in the bottle' experience about changes in air pressure particularly supports student learning in which step of the Inductive learning process?
A) Lesson introduction
B)...
Quiz Me
We're Social
Follow us on your favorite social media platform