Are these correct?
1. Which of the following is a correct statement about homeostasis?
a. The effector sends the stimulus to the control center
b. The receptor is enhanced by the control center
c. The response causes disease
d. The receptor sends the stimulus to the control center
e. The control center sends the message to the receptor
b
2. The human body responds to a lack of supply of oxygen by rapidly producing red blood cells. What is this is an example of?
a. Negative feedback mechanism to restore homeostasis
b. Positive feedback mechanism to restore homeostasis
c. A homeostatic imbalance that will result in disease.
d. A response independent of homeostasis
e. Negative homeostasis that increases the oxygen supply
a
3. A scientific experiment was conducted to assess the effectiveness of a new compound in reducing a high fever. Fifty patients received sugar pills instead of the new compound, and 50 patients were given the new compound. Which of the following statements is true?
a. The 50 patients receiving the sugar pills are called the experimental group
b. The 50 patients receiving the new compound are called the experimental group
c. The independent variable is the temperature
d. The measured results would be the amount of compound given
e. The control group is the patients receiving the new compound
b
4. What is scar tissue?
a. Weakly woven reticular fibers
b. Dense connective tissue
c. Granulation tissue
d. Regenerated epithelial tissue
e. A tangle of damaged nerve fibers
b
I think they are.
1. Sorry, the correct answer is d. The receptor sends the stimulus to the control center. And the control center then sends the message to the effector, which produces the response.
2. Sorry, the correct answer is b. Positive feedback mechanism to restore homeostasis. The production of red blood cells is a response that enhances the initial stimulus of oxygen deprivation, but it does not restore homeostasis since it is an excessive response.
3. Sorry, the correct answer is a. The 50 patients receiving the sugar pills are called the control group. The experimental group consists of the 50 patients receiving the new compound. The independent variable is the new compound itself, not the temperature. The measured results would be the effectiveness of the new compound in reducing the fever.
4. Sorry, the correct answer is c. Scar tissue is formed by the deposition of collagen fibers during the healing process, resulting in dense connective tissue. It is not weakly woven reticular fibers, regenerated epithelial tissue, or a tangle of damaged nerve fibers.
1. The correct statement about homeostasis is d. The receptor sends the stimulus to the control center.
2. The example of the human body responding to a lack of supply of oxygen by rapidly producing red blood cells is a. Negative feedback mechanism to restore homeostasis.
3. In the scientific experiment assessing the effectiveness of a new compound in reducing a high fever, the correct statement is b. The 50 patients receiving the new compound are called the experimental group.
4. Scar tissue is b. Dense connective tissue.
1. To determine the correct statement about homeostasis, let's analyze the options:
a. The effector sends the stimulus to the control center - This is not correct. The effector carries out the response, but it does not send the stimulus back to the control center.
b. The receptor is enhanced by the control center - This is not correct. The control center receives information from the receptor, but it does not enhance the receptor.
c. The response causes disease - This is not correct. The response is a mechanism to maintain balance and prevent disease.
d. The receptor sends the stimulus to the control center - This is the correct statement. The receptor detects changes in the internal or external environment and sends the stimulus to the control center.
e. The control center sends the message to the receptor - This is not correct. The control center analyzes the stimulus and sends the appropriate instructions to the effector.
Therefore, the correct statement about homeostasis is option d: The receptor sends the stimulus to the control center.
2. To identify the example of the human body's response to a lack of oxygen, let's review the options:
a. Negative feedback mechanism to restore homeostasis - This is the correct answer. When the body detects a lack of oxygen, it responds by increasing the production of red blood cells, which helps transport oxygen more effectively. This is a negative feedback mechanism as it works to restore homeostasis.
b. Positive feedback mechanism to restore homeostasis - This is not correct. Positive feedback mechanisms amplify a particular process, rather than restoring homeostasis.
c. A homeostatic imbalance that will result in disease - This is not correct. The body's response to a lack of oxygen is a mechanism to restore balance and prevent disease.
d. A response independent of homeostasis - This is not correct. The response to a lack of oxygen is directly related to homeostasis.
e. Negative homeostasis that increases the oxygen supply - This is not a valid term or concept. The term "negative homeostasis" does not exist.
Therefore, the correct answer is option a: Negative feedback mechanism to restore homeostasis.
3. Let's analyze the statements to determine which one is true:
a. The 50 patients receiving the sugar pills are called the experimental group - This is not correct. The experimental group receives the treatment or compound being tested, not the sugar pills.
b. The 50 patients receiving the new compound are called the experimental group - This is the correct statement. The experimental group usually receives the treatment or intervention being tested.
c. The independent variable is the temperature - This is not mentioned in the given information. We cannot determine if it is true or false based on the information provided.
d. The measured results would be the amount of compound given - This is not correct. The measured results would likely be the effectiveness of the compound in reducing the high fever, not the amount of compound given.
e. The control group is the patients receiving the new compound - This is not correct. The control group usually receives a placebo or standard treatment for comparison, not the new compound.
Therefore, the correct statement is option b: The 50 patients receiving the new compound are called the experimental group.
4. Let's review the options to identify what scar tissue is:
a. Weakly woven reticular fibers - This is not correct. Weakly woven reticular fibers do not accurately describe scar tissue.
b. Dense connective tissue - This is the correct answer. Scar tissue is composed of dense connective tissue that forms in response to injury or wound healing.
c. Granulation tissue - This is not correct. Granulation tissue is the initial stage of wound healing, where new blood vessels develop, not scar tissue itself.
d. Regenerated epithelial tissue - This is not correct. Regenerated epithelial tissue is involved in the process of wound healing, but it is not the same as scar tissue.
e. A tangle of damaged nerve fibers - This is not correct. Scar tissue is not defined as a tangle of damaged nerve fibers.
Therefore, the correct answer is option b: Dense connective tissue.