Q3 Science 7

The main function of messenger RNA is ...

• it adds amino acids to a growing protein chain

• it carries information that causes deletions and other mutations

• it carries the information necessary for DNA replication

• it carries the information necessary for protein synthesis

What is the sequence of events that results in the growth of a tumor?

• mutation, disrupted cell cycle, cancer, tumor

• disrupted cell cycle, protein change, mutation, tumor

Imagine a new medication that slows the cell cycle. How would this medication likely affect cancer?

• It might slow blood flow to the tumor

• It might slow the division of cancerous cells.

When DNA replicates, the new strand is _____ the original strand

• similar to

• identical to

The drawing below shows half of a DNA molecule. Which set of bases would form the other half?

• TGCAGC

• GCTGCA

This Punnett square shows the possible genotypes for the offspring of a colorblind father and a mother who is a c carrier. What is the probability that this couple will have a colorblind girl?

• 25 percent

• 50 percent

Inserting a human gene into a bacterial plasmid is an example of ...

• genetic engineering

• selective breeding

What was the main goal of the Human Genome Project?

• to collect the genetic fingerprints of all humans

• to identify the sequence of the human genome

Which of the following is a selective breeding technique?

• cloning

• inbreeding

How is human blood type inherited?

• through a single gene with multiple alleles

• through a single gene with two alleles, one that is dominant and one that is recessive