What is a thery that has been proven true over time and and never disproven called

Lipids, mainly phospholipids, make up the bulk of the cell membrane. How is the structure of the phospholipid so perfectly paired to the function of the cell membrane?

The force of gravity pulls all objects downwards. Which of these statements is correct about this law of science? A. It is not supported by observations B. It can be contradicted by data C.

Which human activity directly affects the quality of freshwater resources

which of newton's laws of motions explains why a ball bounces off the ground after it hits the ground

An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off.

A woman reports to the emergency room in january with her cyanotic (blue-colored) 10-month-old child. the mother reports that the infant has had a runny nose, fever, and slight cough for a day and has had increasing trouble breathing.

What type of virus is HIV?

Tests reveal that a client has phosphatic renal calculi. the nurse teaches the client that the diet may include which food item?

State whether each of the following statements is true or false. 1. Biochemistry is the study of the vital force that distinguishes organic compounds from inorganic compounds.

What kind of bond exists between two amino acids in a protein? select one: a. amino b. peptide c. sulfhydroxyl d. ionic e. hydrogen next?