Biology, 01.08.2019 03:20 stef76

Which of the following statements is true? a. striated muscle cells are long and cylindrical with many nuclei. b. cardiac muscle cells have many nuclei. c. smooth muscle cells have t tubules. d. cardiac muscle cells are found in the heart and large blood vessels.

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Answer from: tbaanga1

The statement 'striated muscle cells are long and cylindrical with many nuclei' is TRUE (Option A).

Skeletal muscle cells are multi-nucleated, thereby these cells have more than one nucleus.

Skeletal muscle cells are multinucleated due to the fusion of the myoblasts in order to form each long muscle fiber.

These cells (skeletal muscle cells) are in appearance cilindrical.

Skeletal muscle cells are also striated due to the regular arrangement of actin and myosin contractile proteins.

In conclusion, the statement 'striated muscle cells are long and cylindrical with many nuclei' is TRUE (Option A).

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Answer from: AniyahM17

The correct answer is option A.

Explanation:

Striated muscle tissues are muscle tissue that made up of repeated long functional units known as sarcomeres. The long bands of sarcomeres along with muscle fibers provide it a striated appearance. Striated muscles have more mitochondria in it and also contain cells that are multinucleated, unlike smooth muscles. The major function of these muscles is to generate force and contract. Heart and respiratory organs have such muscle.

Thus, the correct answer is option A.

Answer from: Quest

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

Answer from: Quest

they dont have any evidence

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