what hormones are produced in the ovaries and what do they do

ATI TEAS 7

ATI TEAS Science Practice Test

1. What hormones are produced in the ovaries, and what are their functions?

A. Insulin: regulates blood sugar levels
B. Progesterone: stimulates uterine lining growth
C. Adrenaline: increases heart rate
D. Cortisol: regulates stress response

Correct answer: B

Rationale: The correct answer is B. Progesterone, produced in the ovaries, stimulates uterine lining growth and plays a crucial role in regulating the menstrual cycle. Insulin is produced in the pancreas to regulate blood sugar levels, not in the ovaries. Adrenaline is produced by the adrenal glands and increases heart rate in response to stress or danger, not in the ovaries. Cortisol, also produced by the adrenal glands, helps regulate the body's response to stress, not in the ovaries.

2. Which percentage is greatest?

A. The percentage of Asian Americans among the staff at Hospital X
B. The percentage of staff members who have been on staff for 10-15 years at Hospital X
C. The percentage of Doctors among the staff at Hospital X and Hospital Y
D. The percentage of staff with 1-4 complaints among the staff at Hospital Y

Correct answer: C

Rationale: To determine the highest percentage, we need to calculate each option. The percentage in answer A is: 50 / 250 x 100 = 20%. The percentage in answer B is: 57 / 250 x 100 = 22.8%. The percentage in answer C is: (74 + 55) / 433 x 100 = 29.8%. The percentage in answer D is: 21 / 183 x 100 = 11.5%. Therefore, the correct answer is C, as it has the highest percentage of doctors among the staff at both hospitals. Choices A, B, and D are incorrect as they have lower percentages compared to choice C.

3. The kidneys are bean-shaped organs responsible for filtering waste products from the blood. What is the main nitrogenous waste product the kidneys eliminate?

A. Carbon dioxide
B. Ammonia
C. Urea
D. Glucose

Correct answer: C

Rationale: The correct answer is C, urea. Urea is the main nitrogenous waste product eliminated by the kidneys. It is produced in the liver from protein metabolism and excreted in urine. Carbon dioxide is eliminated through the lungs as a waste product of cellular respiration and not by the kidneys. Ammonia, a toxic waste product, is converted to urea in the liver before being excreted by the kidneys. Glucose is a sugar that is reabsorbed by the kidneys and not excreted as waste.

4. Which of the following equations represents a redox reaction?

A. 2H2 + O2 → 2H2O
B. Zn + 2HCl → ZnCl2 + H2
C. 2NaCl → 2Na + Cl2
D. CH4 + 2O2 → CO2 + 2H2O

Correct answer: B

Rationale: A redox reaction involves the transfer of electrons between reactants. In option B, Zn loses electrons to form Zn2+ while H+ gains electrons to form H2. This exchange of electrons demonstrates a redox reaction, making choice B the correct answer. In options A, C, and D, there is no clear transfer of electrons between the reactants, indicating that they are not redox reactions. Option A represents a synthesis reaction, option C represents a decomposition reaction, and option D represents a combustion reaction. These types of reactions do not involve the transfer of electrons between reactants, unlike a redox reaction.

5. During trips to the beach, he preferred to swim at the pool, and whenever he went hiking, he avoided touching any plants for fear that they might be poison ivy.

A. Leave it where it is now.
B. Move the sentence so that it comes before the preceding sentence.
C. Move the sentence to the end of the first paragraph.
D. Omit the sentence.

Correct answer: A

Rationale: The sentence is well-placed where it is, as it provides context to the narrative about the individual's preferences. Moving it before the preceding sentence or to the end of the first paragraph would disrupt the flow of information and may confuse the reader. Omitting the sentence would result in a gap in the story, leaving the reader questioning the individual's behavior without a clear explanation. Thus, leaving the sentence where it is now is the best choice for maintaining coherence in the narrative.