lesson 9-10

The making of RNA based on information in the DNA is called —

• homeostasis

• transport

• transcription

• replication

Which of the following is found in RNA nucleotides but not in DNA nucleotides?

• Nitrogen-containing base

• Phosphate group

• Ribose sugar

• Deoxyribose

Assume that the strand of DNA that makes RNA contains 25% of the nucleotide A. What would be the percentage of the nucleotide T that you would expect to find in this RNA?

• 0%

• 25%

• 50%

• 75%

Assume that transcription is occurring. What would be the sequence of nucleotides in the RNA that is made from the following DNA sequence?

GCTATG

• CGATAC

• CGAUAC

• CCTATC

• GCAUUG

What must happen first so that transcription can begin?

• A must pair with T

• G must pair with T.

• A must separate from T

• G must separate from T.

Which names an organism whose cells contain a nucleus?

• Prokaryote

• Bacterium

• Eukaryote

• Organelle

In which process does the cell's biomolecules form from inorganic substances?

• Respiration

• Photosynthesis

• Homeostasis

• Glycolysis

The RNA that is transcribed from DNA must travel to the cytoplasm. In order to reach the cytoplasm, this RNA must pass through —

• the cell membrane

• the mitochondrion

• the environment surrounding the cell

• pores in the membrane surrounding the nucleus

Which statement about translation is correct?

• Amino acids are assembled into a protein on the ribosomes.

• Messenger RNA is made from DNA

• Ribosomal RNA and transfer RNA form base pairs.

• Transfer RNA contains the genetic code copied from DNA.

Assume that the three nucleotides in messenger RNA are UGA. What are the three nucleotides in the transfer RNA that pairs with this messenger RNA?

• UGA

• ACT

• AGU

• ACU