Beth learned in her science class that white blood cells in the human body capture harmful material by engulfing them. Then they digest them using enzymes, thus protecting the body from infection. Which eukaryote has a similar mode of nutrition? A.
slime mold
B.
paramecium
C.
amoeba
D.
euglena

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs