Medical Tests Medical Tests Certifications MCAT-TEST Questions & Answers

• Question 431:

  Uric acid is a major nitrogenous waste matter that is formed by:

  A. Earthworm.

  B. Grasshopper.

  C. Planaria.

  D. Man.

  Correct Answer: B

• Question 432:

  The center that controls breathing, constriction and dilation of blood vessels, and heart beating is located in:

  A. Cerebellum.

  B. Pons.

  C. Medulla oblongata.

  D. Hypothalamus.

  Correct Answer: C

• Question 433:

  Which of the following fungi is poisonous?

  A. Morchella

  B. Amanita

  C. Agaricus

  D. Rhizopus

  Correct Answer: B

• Question 434:

  All of the following are true about the DNA molecule, except:

  A. It is made of nucleotides.

  B. Its structure is identical to the RNA molecule.

  C. It is a double helix.

  D. It is contained in human chromosomes.

  Correct Answer: B

  All of the other statements are true, but the DNA and RNA molecules do not have the same structure.

• Question 435:

  Stem cells in bone marrow can develop into:

  A. white blood cells.

  B. platelets.

  C. red blood cells.

  D. All of these.

  Correct Answer: D

  Stem cells can develop into platelets, red blood cells, or white blood cells.

• Question 436:

  Where in a virus is the genetic material contained?

  A. tail

  B. capsid

  C. sheath

  D. plug

  Correct Answer: B

  The genetic material is located in the head section, within a structure which is called the capsid.

• Question 437:

  Which level of protein structure indicates the amino acid sequence of the protein?

  A. tertiary

  B. quaternary

  C. primary

  D. secondary

  Correct Answer: C

  The primary structure gives the sequence of amino acids, which uniquely describes a particular protein.

• Question 438:

  If both parents have one recessive allele for blue eyes and one dominant allele for brown eyes, what is the percentage chance of an offspring having blue eyes?

  A. 0%

  B. 25%

  C. 100%

  D. 50%

  Correct Answer: B

  There is a 25% chance of the offspring receiving the recessive allele from both parents. There is a 50% chance of the offspring receiving one recessive and one dominant allele. There is a 25% chance of the offspring receiving the dominant allele from both parents.

• Question 439:

  Which type of DNA mutation involves the insertion of extra base pairs into the sequence?

  A. inversion

  B. substitution

  C. addition

  D. deletion

  Correct Answer: C

  Addition involves the insertion of extra base pairs into the DNA sequence.

• Question 440:

  Which option is something that could be detected by a proprioceptive sensor?

  A. temperature change

  B. light

  C. the position of the body

  D. pain

  Correct Answer: C

  Proprioceptive sensors are found in the muscles and connective tissue and can detect the position of the body. The other options are detected by somatic and skin sensors.