Nokea
What is the first step in the scientific method?
- A. Conduct an experiment
- B. Make an observation and ask a question
- C. Formulate a hypothesis
- D. Reach a consensus
Correct Answer: B
Rationale: The first step in the scientific method is to make an observation and ask a question. This is because the scientific method is a systematic process of investigation that begins with observing a phenomenon or asking a question about it. This is followed by formulating a hypothesis (Choice C), designing and conducting an experiment to test the hypothesis (Choice A), and analyzing the results to reach a consensus or conclusion (Choice D). Therefore, choices A, C, and D are incorrect as they represent steps that occur after the initial observation and question.
You may also like to solve these questions
Which is NOT a characteristic or function of lipids?
- A. Involved in energy metabolism and storage
- B. Provide insulation and protection
- C. Act as hormones that regulate the body
- D. Are hydrophilic
Correct Answer: D
Rationale: Lipids are known for several functions including involvement in energy metabolism and storage (Choice A), providing insulation and protection (Choice B), and acting as hormones that regulate the body (Choice C). However, lipids are not hydrophilic (water-attracting), contrary to choice D. They are actually hydrophobic, meaning they repel water and do not mix well with it. This is a key property that differentiates them from many other biological molecules.
What is one of the best nutritional actions a caregiver can take to help a patient with Alzheimer's disease maintain appropriate body weight?
- A. Thicken liquids to prevent choking
- B. Supervise food planning and mealtimes
- C. Assist the person in completing a grocery checklist
- D. Feed the person their meals and snacks
Correct Answer: B
Rationale: The correct answer is B, 'Supervise food planning and mealtimes'. This action ensures the patient with Alzheimer's disease maintains an appropriate diet and body weight, thus reducing the risk of malnutrition. While choices A, 'Thicken liquids to prevent choking', C, 'Assist the person in completing a grocery checklist', and D, 'Feed the person their meals and snacks', might be beneficial in certain circumstances, they do not directly contribute to the maintenance of appropriate body weight as effectively as supervising food planning and mealtimes does.
What is the most likely demonstration of cardiac cachexia?
- A. Decreased physical activity
- B. Weight loss and tissue wasting
- C. Poor urine output and tissue edema
- D. Cardiac arrhythmia and wet lung sounds
Correct Answer: B
Rationale: Cardiac cachexia is a condition characterized by severe weight loss and tissue wasting. This typically occurs in patients suffering from heart failure due to an increased energy expenditure and reduced appetite, which is why choice B is the correct answer. The other choices are incorrect as they do not accurately describe the symptoms of cardiac cachexia. Decreased physical activity (choice A) can be a result of many conditions, not specifically cardiac cachexia. Poor urine output and tissue edema (choice C) are more indicative of kidney problems rather than cardiac cachexia. Finally, cardiac arrhythmia and wet lung sounds (choice D) are symptoms related to other cardiac conditions, not specifically to cardiac cachexia.
Which of the following nutrients provide energy?(Select ONE that does not apply.)
- A. Carbohydrates
- B. Fats
- C. Protein
- D. Water
Correct Answer: D
Rationale: Carbohydrates, fats, and proteins are the three macronutrients that provide energy (calories) to the body. Carbohydrates are the body's primary source of energy, fats act as a secondary source when carbohydrate energy is exhausted, and proteins are used for energy when carbohydrate and fat sources are low. Choice D, Water, is essential for the body's functions, but it does not provide energy.
Begins carb digestion in the mouth:
- A. pepsin
- B. salivary amylase
- C. CCK
- D. secretin
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.