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Q:

What produces the striations of a skeletal muscle cell?

Answer

The striations are a result of the A bands of sarcomeres appearing as relatively wide, dark stripes under the microscope, which alternate with narrower, lighter colored stripes formed by the I bands. 


The striations of skeletal muscle are created by the organization of actin and myosin filaments resulting in the banding pattern of myofibrils.

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Q:

Which of the following organisms does not fit into the Cell Theory?

A) Bacteria B) Virus
C) Fungi D) Plants
 
Answer & Explanation Answer: B) Virus

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Q:

In mammals, an important role of excretion is played by________

A) Large intestine B) Kidneys
C) Lungs D) Liver
 
Answer & Explanation Answer: B) Kidneys

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Q:

The largest artery in human body is

A) Aorta B) Capillary
C) Vena cava D) Pulmonary vein
 
Answer & Explanation Answer: A) Aorta

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Q:

The cell walls of many organisms of Fungi kingdom are made of a tough complex sugar called ______.

A) Pectin B) Suberin
C) Cellulose D) Chitin
 
Answer & Explanation Answer: D) Chitin

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Q:

In male reproductive system, the testes are situated outside the abdominal cavity within a pouch called __________.

A) Glands B) Scrotum
C) Testicular Lobules D) Seminiferous Tubules
 
Answer & Explanation Answer: B) Scrotum

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Q:

The heart is classified as a(n)_____.

A) organ B) system
C) cell D) tissue
 
Answer & Explanation Answer: A) organ

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Q:

The connective tissue that connects a muscle to a bone is

A) Cartilage B) Ligament
C) Tendon D) Interstitial fluid
 
Answer & Explanation Answer: C) Tendon

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