Question

Messelson and Stahl, determined that when DNA replication is completed,

a)each new DNA double helix consists of one old DNA strand and one new DNA strand

b)each of the four DNA strands consists of some old strand parts and some new strand part

one DNA double helix consists of two old strands and one DNA double helix consists of two new strands

The Meselson-Stahl experiment was designed to answer which question?

		How does DNA replicate?
		What does the secondary structure of DNA look like?
		How do complementary base pairs attach?
		What is the polarity of DNA?

Active transport is the movement of materials from a high concentration to a low concentration, requiring the use of energy from the dephosphorylation of ATP molecules. TRUE OR FALSE

1. If you place a cell that has a 1.0M solution of glucose in a beaker of 10.0M glucose, the cell

   		will gain water across its membrane, creating a hypotonic cell.
   		will lose water across its membrane, creating a hypotonic cell.
   		will take in water across its membrane, creating a hypertonic cell.
   		will lose water across its membrane, creating a hypertonic cell.

Answer 1

Q.Messelson and Stahl, determined that when DNA replication is completed,

a)each new DNA double helix consists of one old DNA strand and one new DNA strand. This is due to semi-conservative replication.

Q.The Meselson-Stahl experiment was designed to answer which question?

How does DNA replicate?

Q.Active transport is the movement of materials from a high concentration to a low concentration, requiring the use of energy from the dephosphorylation of ATP molecules. FALSE

Active transport is the movement of materials from a low concentration to a high concentration.

If you place a cell that has a 1.0M solution of glucose in a beaker of 10.0M glucose, the cell

will lose water across its membrane, creating a hypertonic cell. Water will move out of the cell into the beaker and increase the solute concentration inside the cell thus creating a hypertonic cell.