The following statements regarding to the pancreas and its function.

a. The pancreas is composed of two major types of tissues, (1) the acini, which secrete digestive juices into the duodenum, and (2) the islets of Langerhans, which secrete insulin and glucagon directly into the blood.

b. The islets contain three major types of cells, alpha, beta, and delta cells

c. The beta cells, constituting about 25 percent of all the cells of the islets, lie mainly in the middle of each islet and secrete insulin and amylin.

d. The alpha cells, about 60 percent of the total, secrete glucagon and the delta cells, about 10 percent of the total, secrete somatostatin.

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#Question id: 14822

#Unit 2. Cellular Organization

Which of the following pertains to Borrelia burgdorferi?

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#Question id: 14823

#Unit 2. Cellular Organization

Some bacteria, such as Rhizobium and Corynebacterium, can attain many shapes not just one, called as

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#Question id: 14824

#Unit 2. Cellular Organization

On exposure to desiccation, which of the following bacteria are least likely to experience rapid water loss?

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#Question id: 14825

#Unit 2. Cellular Organization

Actinomycetes characteristically form long multinucleate filaments or hyphae that may branch to produce a network called a 

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#Question id: 14826

#Unit 2. Cellular Organization

An advantage of the smaller size of prokaryotes, compared to eukaryotes, is

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#Question id: 14827

#Unit 2. Cellular Organization

The structures used for motility in both eukaryotes and prokaryotes are