Hill reaction
(Science: plant biology) reaction, first demonstrated by robert hill in 1939, in which illuminated chloroplasts evolve oxygen when incubated in the presence of an artificial electron acceptor (e.g. Ferricyanide). The reaction is a property of photosystem II.
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..