Sodium-potassium pumps are examples of what type of cellular transport?

a. transport in vesicles

b. hypertonic transport

c. primary active transport

d. secondary active transport

e. facilitated diffusion

Phospholipids form the main fabric of the plasma membrane. one feature of phospholipids is that when they are placed in an aqueous solution, they will self-assemble into a double layer (bilayer) that resembles the bilayer of the plasma membrane.

What are the three main things that a plant needs to survive?

Proteins can perform many different functions in living cells. One major function-acting as a catalyst for chemical reactions-can also be performed by what other kind of organic molecule? A.) cholesterol B.) phospholipids C.) glycogen D.) RNA

Which statement about DNA replication is true? A. Prokaryotes can only replicate their single circular chromosome in the nucleus. B. Eukaryotes can only replicate one segment of a chromosome at a time. C.

Describe the chemical make up and type of bonding found in water molecules?

In which of the following cells can more than one nucleus be found? A. An unfertilized egg B. Neuron C. Sertoli cell D. Muscle fibre

1pt Blood is made up of A. nutrients, minerals, fats, and proteins B. oxygen, carbon dioxide, and sugar C. plasma, red blood cells, white blood cells, and platelets D. bone marrow cells and water

One of the first breakthroughs in biotechnology was the discovery of the gene that makes insulin. Part of this process involved scientists making DNA to match each possible sequence of insulin mRNA. What was the next step of this process? A.

Which of these modes of transmission require a bodily opening either natural or artificial?

Which factor is a characteristic of an acid? A. Non-corrosive B. Soapy C. Sour D. Slippery