What was the purpose of the vinegar in the third trial?

a. test the effect of raising pH on enzyme action

b. test the effect of lowering pH on enzyme action

c. serve as a control

d. served no purpose

Which of the choices below is the main producers in the aquatic environment? a. phytoplankton b. zooplankton c. kelp d. fish

Your neighbour cannot understand why her new flowerbed now contains pink flowers. She specifically bought and planted only red and white flowers. Explain which condition in genetics allows this to happen.

The atomic mass of common krypton is 84, and its atomic number is 36. Krypton-82 has how many neutrons within each isotope? A. 46 B. 48 C. 118 D. 120

How is transformation in bacteria most accurately described? assimilation of external dna into a cell the creation of a strand of rna from a dna molecule the creation of a strand of dna from an rna molecule the type of semiconservative replication

A client is admitted to the emergency department with chest pain and shortness of breath. an electrocardiogram indicates that the client is experiencing a myocardial infarction. an emergency cardiac catheterization is scheduled.

Which function of the nephron includes the movement of fluid from the blood into bowman's capsule?

Which one of the following is true for a theory? A) Explanation supported by experiments B) Widely accepted as true C) Supported by repeatable results D) All of the choices

Which of the following is the largest contributor to the salt ions in the ocean? sodium chloride sulfates calcium

Your body moves food thourgh the digestive tract by using a. smooth muscle b. cardiac muscle c. extensor muscle d. Flexor muscle

A group of organs that work together to perform a major function is called a (n)