Question 1

You are given a sample of tissue to identify. The cells contain large amounts of protein arranged in stripes. When an electrical charge is applied to it, the tissue twitches and then relaxes. You classify this sample as ________ tissue.

Accepted Answer

The tissue contains large amounts of protein arranged in stripes, which is a characteristic of skeletal muscle tissue. The twitching and relaxing in response to an electrical charge is also indicative of muscle tissue. Loose connective tissue, adipose tissue, simple epithelial tissue and stratified epithelial tissue do not possess these characteristics.

Question 2

Why do neurons need glial cells?

Accepted Answer

The answer of Why do neurons need glial cells?...

Question 3

-The tissue shown in the photograph forms:

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The answer of 
-The tissue shown in the photograph forms:...

Question 4

This feedback loop is an example of ________ feedback.

Accepted Answer

This feedback loop is an example of negative feedback because it works to maintain the balance or equilibrium of a system by opposing a change that deviates from the set point. In this case, an increase in blood glucose levels triggers the release of insulin to lower the levels back to normal, thus preventing further deviation from the set point.

Question 5

The common garter snake (Thamnophis sirtalis)is found throughout North America. In the South, it is active year round. In the North, it is active during the warmer months but hibernates during the winter. It is commonly found basking on warm rocks during cool mornings. This lifestyle indicates the snake is probably:

Accepted Answer

The fact that the common garter snake is basking on warm rocks during cool mornings suggests that it is regulating its body temperature by taking advantage of external sources of heat, indicating that it is an ectothermic animal.

Question 6

-The tissue in the photograph is an example of ________ tissue.

Accepted Answer

The answer of 
-The tissue in the photograph is an...

Question 7

What characteristics of stratified epithelium make it suitable as an external covering?

Accepted Answer

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Question 8

Which tissues are found in a sample of skin?

Accepted Answer

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Question 9

-The tissue shown in the figure forms:

Accepted Answer

The tissue shown in the figure forms skin, as it is likely referring to epithelial tissue, which is a key component of the skin.

Question 10

For an organism to maintain proper neurological function, sodium and potassium levels must be maintained within narrow ranges. How would the body respond if a person took in excessive amounts of potassium?

Accepted Answer

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Question 11

While working in a forensic lab, you are given a bit of tissue to analyze. It has several layers. The upper surface consists of dead, flattened cells. As you move deeper into the tissue, the cells look healthier. The bottom layer of cells is actively dividing. Under the dividing layer is an acellular protein goo. You identify the sample as ________ tissue.

Accepted Answer

The presence of multiple layers of cells, with the upper layer consisting of dead, flattened cells and the lower layer actively dividing, is a characteristic of stratified epithelial tissue. The acellular protein goo underneath the dividing layer could be the basement membrane or basal lamina, which are components of epithelial tissue. The other tissue options do not fit the description given.

Question 12

-The tissue in the photograph is:

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The answer of 
-The tissue in the photograph is: 
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Question 13

-The tissue shown in the figure is:

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The answer of 
-The tissue shown in the figure is:
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Question 14

-This tissue is:

Accepted Answer

The answer of 
-This tissue is: 
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Question 15

What characteristic defines muscle tissue?

Accepted Answer

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Quiz 31: Homeostasis and the Organization of the Animal Body