• 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
60K
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.
 104
Outline of Meiosis I
 255
Earthworm anatomy
 8609
The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
 2008
Size comparison of Earth and Mars.
 192
The chromosome scaffold of a metaphase chromosome
 4629
Major structures of the human brain.
 3740
Bone Scans and Nuclear medicine
 6051
Testing the reducing atmosphere hypothesis for the origin of life - the Miller and Urey experiment.
 93
Bacteriophages
 195
Bladderwrack (Fucus vesiculosus)
 235
Ciliate Structure: Paramecium
 605
Hypersensitive Response
 13369
Examples of sensory receptors in the skin of mammals.
 401
Australia's spiny anteater, one of only three modern species of monotremes
 285
Persistent Juvenile Traits in Salamanders
 131
Loxioides bailleui
 1324
Tissue Repair, Aging, and Disorders
 374
Body Plan of a Crocodile
 331
Early growth of corn (Zea mays), a typical monocot.
 571
Leaves of sugar maples (Acer saccharum)
 860
Cat Flea
 356
Pollen on stigmata - blanket flower (Gaillardia grandiflora)
 270
Marsupials: Kangaroo
 245
Insect Body Plan: Grasshopper
 265
Valves in veins prevent the backflow of blood
 140
Plasmodium, a protist pathogen that causes malaria
 66809
Parenteral medication administration. The angle of needle insertion for four different types of pare
 183
Example of cnidocyte action
 241
Early Earth
 91
Effects of Temperature on Gene Expression
 188
Genetically Modified Chicken
 129
Evolution of internal membranes
 250
Inflammation
 563
Spider (tarantula)
 269
Primate skin
 1564
Effects of growth rate on development.
 361
Joint anatomy.
 199
Lichen Structure
 111
Daphnia pulex
 17000
Diagram of the life cycle of Plasmodium falciparum, the causative agent of malaria
 735
Our Moon
 15771
The ovarian and uterine cycles in a human female.
 261
Root Hairs
 281
Scarlet hood mushroom (Hygrophorus)
 779
Western rim of Endeavour Crater
 371
Cerebrospinal Fluid
 381
Posterior pituitary function
 283
Pattern of retinal stimulation in the human eye
 128
Infected Tobacco Leaves by a Virus
 418
Functional categories of human genes
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!
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)
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 time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting at time
t = 1.00 s. In the SI system, A has the numerical value 4.50 and B has the numerical value 8.75.
(a) What are the SI units of A and...
Quiz Me
Your parents plan to invest $4,000 at the beginning of each year for their grandchildren's education. The rate of return on the investment is 3.5% compounded annually. What will be the value of the education fund be after twelve years?
Quiz Me
What is the maximum target slip rate considered to be effective on antilock systems?

▸ 5 percent

▸ 10 percent

▸ 20 percent

▸ 40 percent
Quiz Me
Which of the following is NOT true?
A) MacPherson strut suspension systems do not use loaded ball joints
B) Struts support the weight of the vehicle
C) MacPherson struts attach to the steering knuckle
D) Struts control spring...
Quiz Me
Which of these could cause incorrect driveline angles on a rear wheel drive vehicle?
A) A bad U-joint      B) Incorrect ride height
C) Low differential fluid      D) Mis-matched tires
Quiz Me
The freedom for artists to create what they want (excluding notably obscene imagery) was established by __________.

▸ specialists in museums and the art market

▸ the 1973 Supreme Court case Miller v.
Quiz Me
Cross-cultural research examining the validity of the five-factor model of personality has found that these five factors show up in at least ____ different cultures, including some that have rarely been studied.
 
  a. 15
Quiz Me
The carbon in our bodies was formed in nuclear reactions in long-dead stars. How much energy was released when the right number of 4He nuclei combined to make 12C? The mass of 4He is 3728.40 MeV/c2 and the mass of 12C is 11,177.93 MeV/c2.
A)...
Quiz Me
A young child is likely to use the ___ strategy to solve the problem “1 + 1 = __” and the ___ strategy to solve the problem “7 + 8 = __”.
a.   retrieval, retrieval
b.   count from one, retrieval
Quiz Me
When performing a routine transmission service, you notice a light coating of black deposits in the bottom of the transmission pan. What should you do?

▸ Replace the bands.

▸ Replace the clutches.

▸ Clean the...
Quiz Me
Suppose Ford Motor Company produced and sold $50 million 2015 model-year pickup trucks during the last half of 2014. How would this affect GPD?
A) 2014 GDP would remain unchanged, and 2015 GDP would rise by $50 million.
B) 2014 GDP would...
Quiz Me
__________ is a term for settlements designed for the purpose of religious conversion.
a. Settlement colonies
b. Exploitation colonies
c. Maritime enclaves
d. Missionism
Quiz Me
We're Social
Follow us on your favorite social media platform