Glucose is a form of sugar found in the blood. Cells use glucose as a source of energy, but too much or too little can cause serious health issues. So, the body uses the hormone insulin to regulate glucose in the blood. Insulin helps maintain glucose levels in the blood. If blood glucose levels got very high, what would you expect to see happen to insulin levels?(1 point)

Question

Responses

insulin levels would not change
insulin levels would not change

insulin levels would increase
insulin levels would increase

Insulin levels would decrease

Answer 1

If blood glucose levels got very high, you would expect to see insulin levels increase. This is because insulin is released by the pancreas in response to elevated blood glucose levels to help lower those levels by facilitating the uptake of glucose by cells. Therefore, the correct response is:

insulin levels would increase.

Answer 2

Students were asked to design a lab that investigated the relationship between heart rate and exercise. Heart rate was determined by recording the pulse rate in beats per minute. The students hypothesized that increased exercise results in an increased heart rate. The class results for the experiment are shown above.

The change in heart rate that occurs between 1 and 5 minutes of exercise is an adaptation that...

(1 point)
Responses

slows the destruction of enzymes involved in respiration of muscle cells.
slows the destruction of enzymes involved in respiration of muscle cells.

reduces the rate at which oxygen is carried to the muscles cells
reduces the rate at which oxygen is carried to the muscles cells

results in the production of more ATP in muscle cells
results in the production of more ATP in muscle cells

increases the rate at which carbon dioxide is carried to the muscle cells

Answer 3

The change in heart rate that occurs between 1 and 5 minutes of exercise is an adaptation that results in the production of more ATP in muscle cells.

During exercise, the demand for energy increases, and a higher heart rate helps deliver more oxygen and nutrients to the muscles, which in turn facilitates greater ATP production needed for sustained activity. Therefore, the correct response is:

results in the production of more ATP in muscle cells.

Answer 4

example hot conditions. The reaction starts with sensors, followed by controls, and then effectors. Match the components of a body temperature feedback loop according to this basic model by matching the number (1,2,3) to the appropriate location in the feedback loop (A, B, C)(3 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
1. temperature regulatory center in brain
2. nerve cells in skin and brain
3. sweat gland throughout the body

Answer 5

In a body temperature feedback loop, the components can be matched as follows:

• A (Sensors): 2. nerve cells in skin and brain (These act as sensors to detect changes in temperature.)

• B (Controls): 1. temperature regulatory center in brain (This acts as the control center that processes the information from the sensors.)

• C (Effectors): 3. sweat gland throughout the body (These are the effectors that respond to the control center's signals to produce sweat and help cool the body.)

So the matches are:

• A = 2
• B = 1
• C = 3

Answer 6

A student walks to school in the morning when the outside temperature is 60º F. when the same student walks home after school, the outside temperature has dropped to 35ºF. In this situation, how is thermal homeostasis maintained?(1 point)
Responses

The student begins to sweat as a positive feedback mechanism to reduce the core body temperature.
The student begins to sweat as a positive feedback mechanism to reduce the core body temperature.

The student begins to shiver as a negative feedback mechanism to increase the cord body temperature
The student begins to shiver as a negative feedback mechanism to increase the cord body temperature

The student's breathing rate slows as a positive feedback mechanism to deliver more oxygen to the lungs
The student's breathing rate slows as a positive feedback mechanism to deliver more oxygen to the lungs

The student's heart rate drops as a negative feedback mechanism to deliver less oxygen to the lungs.
The student's heart rate drops as a negative feedback mechanism to deliver less oxygen to the lungs.

Answer 7

In this situation, as the outside temperature has dropped significantly to 35º F, the appropriate response to maintain thermal homeostasis would be:

The student begins to shiver as a negative feedback mechanism to increase the core body temperature.

Shivering generates heat through muscle activity, helping to raise the body's temperature in response to the cold environment. Therefore, this is the correct answer.

Answer 8

The world's most popular type of banana is facing a major health crisis. According to a new study, a disease caused by a powerful fungus is killing the Cavendish banana, which accounts for 99% of the banana market around the globe. The disease, called tropical race 4 (TR4), has affected banana crops in southeast Asia for decades. In recent years, it has spread to the Middle East and the African nation of Mozambique. Now experts fear that disease will show up in Latin America, where the majority of the world's bananas are grown. Once a banana plant is infected with TR4 it cannot get nourishment from water and nutrients, and is basically dies of thirst. TR4 lives in soil, and can easily end upon a person's boots. If the contaminated boots are then worn on a field where Cavendish bananas are grown, the disease could be transferred. " Once a field has been contaminated with the disease, you can't grow Cavendish bananas there anymore, " Randy Ploetz(scientist) says. "The disease lasts a long time in the soil." But the Cavendish banana is also particularly vulnerable to TR4. The banana is grown in what is called monoculture. "you see a big field of bananas and each one is genetically identical to its neighbor" Ploetz says. "And they are all uniformly susceptible to this disease. So one one plant gets infected, it just runs like wildfire throughout that entire plantation.

How would TR4 threaten homeostasis within a banana plant?

(1 point)
Responses

The TR4 fungus causes the Banana plants to retain too much water
The TR4 fungus causes the Banana plants to retain too much water

The TR4 fungus prevents the banana plants from being able to regulate the proper amount of water needed.
The TR4 fungus prevents the banana plants from being able to regulate the proper amount of water needed.

The TR4 fungus does not affect the homeostasis of the banana plant.
The TR4 fungus does not affect the homeostasis of the banana plant.

The TR4 fungus causes the plants to not regulate carbon dioxide intake for photosynthesis

Answer 9

The correct response to how TR4 threatens homeostasis within a banana plant is:

The TR4 fungus prevents the banana plants from being able to regulate the proper amount of water needed.

The fungus disrupts the plant's ability to take up water and nutrients, leading to dehydration and ultimately causing the plant to die. This disruption affects the plant's homeostasis, as maintaining proper water levels is crucial for its survival and overall health.