Which of the following statements regarding fermentation is correct?
a. glucose consumption is lower in anaerobic conditions (oxygen not present) in comparison to aerobic conditions (oxygen present).
b. fermentation occurs more readily in aerobic conditions (oxygen present) than in anaerobic conditions (oxygen not present).
c. the enzyme alcohol dehydrogenase regenerates nadh for glycolysis.
d. the lactate dehydrogenase reaction regenerates nad+ for glycolysis.

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos