Q3 G10 Science CA2 Review

A DNA strand, CTT AGA, was used to create a protein. What is the complementary DNA strand for this strand?

• GAA TCT

• GAA CTC

• AGG TCT

• GTA CAC

A DNA strand, CTT AGA, was used to create a protein. What is the mRNA strand created from this strand?

• GAA UCU

• GUU UCU

• GAA TCT

• GUU TCT

A DNA strand, CTT AGA, was used to create a protein. What are the amino acids created from this strand?

• Glu

• Leu

• Ser

• Cys

Which is NOT true about the process of protein synthesis?

• In DNA Replication, old DNA strands are duplicated and was each paired up with a new complementary strand.

• In Transcription, the end product is the creation of tRNA by the RNA polymerase.

• In Translation, the tRNA anticodon interprets the mRNA codons.

• Translation stops after the tRNA reaches the stop codon in the mRNA strand.

This refers to the mutation in which the protein produced does not differ even after mutation happens to the DNA.

• Silent mutation

• Nonsilent mutation

• Missense mutation

• Nonsense mutation

What could possibly happen if a nucleotide with Thymine as its base is inserted in between C and G in the DNA sequence, CCC GTG?

• There will be an additional amino acid produced.

• The first amino acid produced will change.

• The second amino acid produced will change.

• There will be no change in the amino acid produced.

Which is NOT true about how natural selection happens?

• There is a genetic variation that arises in the population of a species.

• There is competition for limited resources

• The genetic variation allows individuals with less favorable traits to have a higher chance of surviving and multiplying.

• The species will develop their adaptive abilities to survive in the environment.

Organisms who are believed to related to each other but developed specific body parts to have different functions are observed to have __________ structures.

Wolves and dogs having similar ancestors but behaving differently due to their current location in which they evolved.

• Genetic Variation

• Comparative Anatomy

• Biogeography

• Fossil Records

As mammals, whales have a pelvic bone, which is a proof that it is once a terrestrial animal.

• Comparative embryology

• Molecular Genetics

• Biogeography

• Vestigial structures