• 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
25.1K
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.
 729
Neuron and Astrocytes
 16025
The alimentary canal of birds.
 1036
Example of inflammation as a response to bacterial infection.
 832
Human urinary system
 6742
Negative feedback as a mechanism by which homeostatic control systems operate.
 1163
Cohesion–tension theory of water transport in vascular plants
 639
Some skeletal differences between a knuckle-walking gorilla and a bipedal human
 11428
Examples of epithelial tissue.
 1028
Cardiac conduction system
 814
Scarlet hood mushroom (Hygrophorus)
 1120
Viking Lander 1 site February 1978.
 873
Life cycle of Obelia, a hydrazoan that has alternating medusa (left) and polyp generations
 758
Loss of a Shoot Tip Ends Dormancy in Lateral Buds
 610
Morphological divergence among vertebrate forelimbs
 559
Control of Respiration
 4354
Mosquito Larva and Parasite
 793
A Cone Snail, Conus geographus
 4140
Bone Scans and Nuclear medicine
 1228
Solar Eclipse
 1094
The photo is a cross-section of thickened human skin
 1197
Male and female Lions (Panthera leo)
 660
Synaptic Density
 1177
Joint anatomy.
 951
Dry outgrowths of the ovary wall of a maple (Acer) fruit form “wings” that catch the wind and ...
 944
Fossilized Footprint: Therapod
 36
The process of phagocytosis
 895
Female burnet moths (Zygaena filipendulae) perch on purple blossoms
 446
Trichomonas vaginalis
 3427
Structure of a mitochondrion
 618
An 8-week-old fetus
 1072
Ethylene Production During Strawberry Ripening
 796
Evolutionary Tree for Chordates
 954
The human brain
 12451
Hormonal control of parturition.
 873
Myelin sheath
 597
Plant Organs of a Flowering Plant
 1179
A zebra orchid (Caladenia cairnsiana) mimics the scent of a female wasp
 638
Spore Bearing Structures of Pilobolus
 1375
Coelacanth
 1103
Trichomes are hairs or other fine outgrowths of epidermal cells
 899
Persistent Juvenile Traits in Salamanders
 1074
Enceladus
 756
Main components of the human endocrine system and the effects of their secretions
 834
Miranda
 712
Ionotropic receptor
 1201
Development of the Dungeness crab (Cancer magister). The crabs live for 8 to 10 years.
 697
Classification of bones according to shape
 895
Polyploidy increases fruit size
 33151
A simplified food web from an African savannah ecosystem
 771
Pattern of retinal stimulation in the human eye
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: Calculating Resistance in Series and Parallel Circuits
Automotive Math: Engine Power and Volumetric Efficiency
Automotive Math: Calculating the Compression Ratio of a Cylinder
Integrated Trade Discount Problems (Markup, Markdown, Profits) (Example 2)
Automotive Math: Conversion between Celsius and Fahrenheit
Markdown Application Problems (Example 2) #markdown #discount #finance
Markdown Application Problems #markdown #discount #finance
Markup Application Problems #finance #business
Introduction to Markup and Examples #finance #markup
Discount on Partial Payments Examples #finance #discount
Trade Discount Word Problems #finance
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
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.
In The Blessed Curse, how did Williamson's grandmother depict her status as intersexed?
 
  a. a gift from the Great Spirit to be given strength and tenderness
 b. a curse from Mother Earth of being between worlds and...
Quiz Me
You are the proprietor of a fledgling computer graphics company in Shanghai, China. The sophisticated business application software you need for your business normally sells for 2,900 renminbi (around $350) at...
Quiz Me
1- Suppose that sample of beef broth initially contains 16 bacterial cells. After 4.0 h, there are 1.6 x 106 bacterial cells in the sample. Calculate the growth rate of the bacterial population for the given time interval.
(Record your answer in...
Quiz Me
Individuals who score high on the lifestyle orientation of Judging tend to orient their lives in a spontaneous and open-ended manner.
 
  Indicate whether the statement is true or false.
Quiz Me
Because modern engines heat up rapidly, heated oxygen sensors (HO2S) are not required.

▸ true

▸ false
Quiz Me
A high-performing individual worker is switched to working in a team and has trouble adjusting. The team complains that worker is disruptive and too demanding. How best might the manager of this team improve the situation?
A) Make the worker the...
Quiz Me
Dr. Sands, a family practitioner, documents, "Patient uses contraception for birth control." You have sent repeated queries to him, but have received no response. Your manager tells you to send the bill as is rather than wait for a response from...
Quiz Me
Which of the following is a purely procedural step that could be taken to increase the probability that a committee will be successful?
A) rephrasing ideas already expressed
B) specifying the authority of the committee
C) bringing...
Quiz Me
Juan is a young adult man of Hispanic heritage, accused of murdering his Caucasian girlfriend Suzanne. Carmela is a Hispanic woman who is serving as a member of the jury. According to the black sheep effect, Carmela would be likely to: 
a....
Quiz Me
What is the potential benefit of an HCCI engine?

▸ More power

▸ Quieter

▸ More aerodynamic

▸ Better fuel economy
Quiz Me
What is the common ion in a solution prepared by mixing 0.55 M LiCH3CO2 with 0.10 M CH3CO2H?
A) H3O+
B) Li+
C) CH3CO2-
D) OH-
Quiz Me
In June, Karen Henderson, an accountant, examined her records to learn the amount she had billed each of the first 90 clients who had contacted her at the beginning of the year for income tax advice. The results of the survey appear in the following...
Quiz Me
We're Social
Follow us on your favorite social media platform