OAT Online Practice Questions and Answers

On a bad day, have you ever been irritable? Have you ever used a harsh tone or even been verbally disrespectful to your parents or teachers? Everyone has a short temper from time to time, but current statistics indicate that between 16% and 20% of a school population suffer from a psychological condition known as Oppositional Defiance Disorder, or ODD.

ODD symptoms include difficulty complying with adult requests, excessive arguments with adults, temper tantrums, difficulty accepting responsibility for actions, low frustration tolerance, and behaviors intended to annoy or upset adults. Parents of children with ODD can often feel as though their whole relationship is based on conflict after conflict.

Unfortunately, ODD can be caused by a number of factors. Some students affected by ODD suffer abuse, neglect, and severe or unpredictable discipline at home. Others have parents with mood disorders or have experienced family violence. Various types of therapy are helpful in treating ODD, and some drugs can treat particular symptoms. However, no single cure exists.

The best advice from professionals is directed toward parents. Therapists encourage parents to avoid situations that usually end in power struggles, to try not to feed into oppositional behavior by reacting emotionally, to praise positive behaviors, and to discourage negative behaviors with timeouts instead of harsh discipline.

Which of the following statements can be inferred from paragraph 4?

A. Parents of children with ODD are bad parents.

B. ODD is not a real psychological disorder.

C. Medication can worsen ODD.

D. Reacting emotionally to defiant behavior might worsen the behavior.

5 friends just got hired for a job. 4 of them will earn $12 an hour, and the fifth person will earn $3 more than the average of all five salaries. How much does the fifth person make?

A. $13

B. $13.75

C. $14.25

D. $15 E. $15.75

What is the value of r in the following equation?

29 + r = 420

A. r = 29/420

B. r = 420/29

C. r = 391

D. r = 449

What is the functional unit of the liver called?

A. Nephron

B. Lobule

C. Osteon

D. Sarcomere

E. Alveoli

Which of the following arises from the mesoderm?

A. Pancreas

B. Lining of digestive system

C. Skin

D. Skeletal muscles

E. Nervous system

Primates are part which of the following classifications?

A. Phylum

B. Class

C. Order

D. Family

E. Genus

Chlorophyll is associated with which of the following metals?

A. Zinc

B. Iron

C. Magnesium

D. Silver

E. Manganese

All of the following are characteristics of a galvanic cell EXCEPT:

A. It is spontaneous.

B. Anode is the site of oxidation.

C. Anions flow to the anode via the salt bridge.

D. The cathode is negative.

E. All of the above are true.

In ideal gas circumstances, if the pressure and volume were both doubled. What would happen to the temperature?

A. It would stay the same.

B. It would half.

C. It would double.

D. It would quadruple.

E. Cannot be calculated with this information.

What is the relationship between the following two molecules?

A. Enantiomers

B. Identical compounds

C. Meso compounds

D. Diastereomers

E. Structural isomers