Search results
Results from the WOW.Com Content Network
Educator. 12 years ago. Both require membrane transport proteins. However, facilitated diffusion does not require energy and moves substances down a concentration gradient. Active transport requires energy and moves substances against a concentration gradient.
Ask your year-one biology questions here. Describe the factors that affect the rate of passive transport of molecules acro
Definition for. Negative frequency-dependent selection. A pattern of natural selection in which the fitness of a genotype decreases when its frequency becomes higher; the result is a balanced polymorphism. Biology Forums - Study Force is a free online homework help service catered towards college and high school students. Get homework help and ...
Definition for. Countercurrent heat exchange. A method of regulating heat loss to the environment; many animals conserve heat by returning it to the body's core and keeping the core much warmer than the extremities. Biology Forums - Study Force is a free online homework help service catered towards college and high school students. Get homework ...
Definition for. Tautomeric shift. Tautology. Tax-haven country. A tautomeric shift produces a transition mutation in the complementary strand. Induction of transition mutations by spontaneous tautomeric shifts. In the original double-stranded DNA molecule, A in the standard (amino) form pairs with T. During replication, the two strands separate.
Biology Forums - Study Force is a free online homework help service catered towards college and high school students. Get homework help and answers to your toughest questions in biology, chemistry, physics, mathematics, engineering, accounting, business, humanities, and more.
Biology Forums - Study Force is a free online homework help service catered towards college and high school students. Get homework help and answers to your toughest questions in biology, chemistry, physics, mathematics, engineering, accounting, business, humanities, and more.
Definition for. Bicarbonate buffering system. The bicarbonate buffering system is an important buffer system in the acid-base homeostasis of living things, including humans. As a buffer, it tends to maintain a relatively constant plasma pH and counteract any force that would alter it. In this system, carbon dioxide (CO2) combines with water to ...
Biology Forums - Study Force is a free online homework help service catered towards college and high school students. Get homework help and answers to your toughest questions in biology, chemistry, physics, mathematics, engineering, accounting, business, humanities, and more.
Definition for Cost-benefit analysis. Definition for. Cost-benefit analysis. The costs of a proposed action are compared to the benefits that result from the action. - If benefits > costs: pursue the action. Not all costs and benefits can be identified. Reference points for posture analysis.