Nursing Elites

1. The urethra is the tube that carries urine from the bladder to the outside of the body. How does urine flow through the urethra?

• A. Continuously
• B. Only when the bladder is completely full
• C. Under voluntary control of sphincter muscles
• D. A combination of b) and c)

Correct answer: C

Rationale: The correct answer is C: "Under voluntary control of sphincter muscles." The urethra is the tube responsible for carrying urine from the bladder to the outside of the body. Urine flow through the urethra is not continuous but rather under voluntary control. The sphincter muscles, located at the opening of the bladder and urethra, help control the release of urine. This control allows individuals to regulate when and where they empty their bladder, providing a mechanism to prevent involuntary leakage of urine. Therefore, option C accurately describes how urine flows through the urethra.

2. Organisms that break down dead organisms and return nutrients to the environment are called:

• A. Producers
• B. Decomposers
• C. Consumers
• D. Parasites

Correct answer: B

Rationale: Rationale: Decomposers are organisms that break down dead organisms and organic matter, such as bacteria, fungi, and some insects. They play a crucial role in the ecosystem by breaking down complex organic materials into simpler forms, releasing nutrients back into the environment for other organisms to use. Producers (option A) are organisms that produce their own food through photosynthesis, consumers (option C) are organisms that consume other organisms for energy, and parasites (option D) are organisms that live on or in another organism and benefit at the host's expense.

3. Urine, the liquid waste product of the body, travels from the kidneys to the bladder through tubes called:

• A. Ureters
• B. Urethra
• C. Nephrons
• D. Renal pelvis

Correct answer: A

Rationale: The correct answer is A: Ureters. Ureters are the tubes that connect the kidneys to the bladder, allowing urine to flow from the kidneys to the bladder for storage before elimination. The urethra, option B, is the tube through which urine is expelled from the bladder out of the body. Nephrons, option C, are the functional units of the kidneys responsible for filtering blood and producing urine. The renal pelvis, option D, is a part of the kidney where urine collects before entering the ureters. Therefore, the correct answer is A, as the ureters specifically carry urine from the kidneys to the bladder.

4. What is the term for the process of converting a liquid into a gas at a temperature below its boiling point?

• A. Vaporization
• B. Evaporation
• C. Condensation
• D. Sublimation

Correct answer: B

Rationale: Evaporation is the process of converting a liquid into a gas at a temperature below its boiling point. The other choices describe different phase changes.

5. What happens to the kinetic energy of an object when its velocity is doubled?

• A. Kinetic energy remains the same
• B. Kinetic energy is halved
• C. Kinetic energy doubles
• D. Kinetic energy quadruples

Correct answer: c

Rationale: Kinetic energy is directly proportional to the square of an object's velocity.

6. Which type of symbiosis is where both organisms benefit from the interaction?

• A. Mutualism
• B. Commensalism
• C. Parasitism
• D. Predation

Correct answer: A

Rationale: Rationale: Mutualism is a type of symbiosis in which both organisms involved benefit from the interaction. This relationship is characterized by cooperation and mutual support, leading to advantages for both parties. In mutualistic relationships, each organism provides something that the other needs, resulting in a mutually beneficial outcome. Examples of mutualism include the relationship between bees and flowers (pollination) and the partnership between nitrogen-fixing bacteria and leguminous plants.

Similar Questions