Oragnism that generate energy using ligh are:
a. oligotrophs
b. chaemorganotrophs
c. chaemolithotrophs
d. photoautotrophs

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

In guinea pigs, black fur (b) is dominant over white fur (b). cross a heterozygous (hybrid) black guinea pig with a homozygous (purebred) white guinea pig. complete a punnett square, identify the genotype(s), phenotype(s), and probability (% and fraction) that the offspring will be black and white?