How canna person donate blood and never run out of it? a)blood componentes are continuously pumped by the heart. b)blood componentes are continuously circulated through the blood vessels. c)blood componentes are continuously produced in the bone marrow. d) blood componentes are continuously digested by enzymes.

In general in which direction does wind blow

Amylase becomes denatured at a temperature of 80°c. during an experiment to study the effect of varyingtemperature on enzyme activity, amylase’s reactivity with starch was measured at body temperature (37°c), andthen again at an increased temperature of 42°c. how would this increase in temperature affect the experiment

Black fur(b) in guinea pigs is dominant over white fur(b). find the probability of a homozygous offspring in a cross: bb x bb. a. 0% b. 25% c. 50% d. 75% e. 100%