Question

Question 46 Not yet answered in the In response to seasonal diets, the microbial community in reindeer will preferentially breakdown winter. Points out of Flag Select one: O a starch O b. chitin O C protein O d. fiber Question 47 As the ambient temperature drops below zero, a newborn reindeer's resting metabolic rate Not yet answered Points out of 1.00 P Flag question Select one: O a. increases. O b. stays the same. O C. decreases O d. decreases first and then levels off, Question 48 Not yet answered Which protein is found in brown fat? Peints out of 1.00 P Flag question Select one: O a. UCP1 and UCP2 O b. UCP1 and UCP3 OC. UCPI O d. UCP2 Question 49 Not yet If you were to do an immunocytochemistry experiment on a newborn reindeer, a one-month-old reindeer, and a two-month-old reindeer to test for the presence of brown fat, your results would show a _amount of brown fat on the compared to the _-month old. Points out of 100 question Select one: O a higher; newborn; one O b. higher; one-month-old; two O c. lower; newborn; one O d. lower; newborn; two

Answer 1

Question 46: Starch

Explaination: During winter generally reindeer feed lichen which has very less amount of protein availaibility. This generally contains a type of carbohydrate. Starch is a complex carbohydrates.The microbial community of reindeer usages this carbohydrates in winter. In winter reindeer requires a rich diet which contains a energy and must be easily digestable. Therefore they generally prefer to eat these lichen in winter season. So the presence of starch in this diet is used up by microbual community to breakdown.

Question 47: Decreases

Explaination: During birth of the calves of reindeer, calves are usually unprotected and are exposed to sub zero ambient temp. Which is indicated by Ta. This exposure are sometimes mixed with precipitation and wind. These temp affects the metabolic rate in animals. They are endothermsuse, which indicate the generation of heat in them through the phenamena of metabolic rate. Resting metobolism often in the thermoneutral zone decreases.

Question 48: UCP1

Explaination: UCP1 is "uncoupling protein one" and is a unique one which is found in fat cell. This presence is becasue of large number of mitochondria and the function of this protein is to synthesis the cellular ATP. Synthesis is done by spending their proton motive force.

Question 49: higher, new born, one

Explaination: In newborn reindeer, the adipose tissue are located in some specific area of body such as

> perirenal abdominal area - 32%

> interscapular - 18%

> sternal - 12%

    > peripheral - 66-34%

The morphology of brown fat cell in new born reindeer is lots of mitochondria, multilocular fat, high vascularization and sypathetic innervation between fat cell but in one month old reindeer contain white adipose tissue which have fewer number of mitochondria.according to mitochondrial volume , cytochrome c oxidase and succinate dehydrogenase activity highest in new born but undectable in one month old reindeer.