HESI A2 BIOLOGY: GENETICS DNA EXAM QUESTIONS

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HESI A2 BIOLOGY: GENETICS & DNA EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -17 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Heterozygous

Answer:

Both alleles are different

Question 2: transfer RNA

Answer:

Location of anticodon, carries a specific amino acid. Binds to ribosome when its codon is sliding through the ribosome.

Question 3: Recessive

Answer:

Lowercase letter

Question 4: DNA Structure

Answer:

Double helical structure that contains the 4 nitrogenous bases adenine, thymine, guanine, and cytosine.

Question 5: Codon

Answer:

Every group of 3 bases along the stretch of RNA, each code for a specific amino acid.

Question 6: Stop codon

Answer:

Where the chain is ended, the chain is then released into the cytoplasm, and the protein folds onto itself and forms its complete conformation.

Question 7: DNA

Answer:

Genetic material of a cell and is the vehicle of inheritance

Question 8: Transcription

Answer:

An RNA strand, complimentary to the original strand of DNA, is produced.

Question 9: Homozygous

Answer:

Both alleles are the same type

Question 10: Dominant

Answer:

Capitalized letter

Question 11: mRNA functions

Answer:

Messenger from the original DNA helix i the nucleus to the ribosomes in the cytosol or on the rough ER.

Question 12: Alleles

Answer:

For every trait expressed in a sexually reproductive organism, there are at least 2 alternative versions of a gene.

Question 13: messenger RNA

Answer:

Piece of genetic material produced through transcription.RNA strand has nitrogenous bases identical to those in DNA with the exception of uracil, which is substituted for thymine.

Question 14: Ribosomes

Answer:

Act as the site of translation

Question 15: Punnett Square

Answer:

Possible to predict genotype (combo of alleles) and phenotype (what traits will be expressed) off the offspring of sexual reproduction.

Question 16: Replication

Answer:

Strands are separated, then with the help of several enzymes, new complimentary strands to each of the 2 original strands are created. Produces 2 new double-stranded segments of DNA identical to the original.

Question 17: DNA Bonds

Answer:

Adenine-Thymine Guanine-Cytosine