Question

CELL- STRUCTURE AND FUNCTION RELATIONSHIPThe structure and shape of each type of human cell depends on what function it will perform in the body. For example, red blood cells (RBCs) are very small, flat discs, which allows them to easily fit through narrow capillaries and around sharp corners in the circulatory system to deliver oxygen throughout the body.Neurons carry messages from the brain and spinal cord to the rest of the body, using electrical signals down their lengths and chemical signals between neurons. Since electrical signals travel much faster than chemical signals, neurons are long and thin to minimize the number of slower chemical signals that would be required between links in a chain of many shorter neurons.The elongated shape of muscle cells allows the contraction proteins to line up in an overlapping pattern that makes muscle flexing possible.And human sperm cells’ structures allow them to “swim” long distances to reach an egg for fertilization. They do this by using flagella, their long whip-like tails, and also by being very small, carrying little more than the DNA for a potential zygote. 38.a)-The shape of nerve cell is

1 point

Spherical

Spindle

Long branched

irregular

38-b)Which type of cells are meant for contraction and relaxation?

1 point

(i)Nerve cells

(ii)Muscle cells

(iii)Blood cells

(iv)Human egg cell

38-c)which of the following can change its shape

1 point

Nerve cells

(ii)Muscle cells

(iii) White Blood cells

(iv)Human egg cell

38.d) Identify cell a,b and c in the following figure

2 points



a -muscle cell, b- redbloodcell, c-nerve cell

a - nerve cell, b-muscle cell, c-redblood cell

a -muscle cell, b-nerve cell, c- redblood cell

a -redblood cell, b-muscle cell, c-nerve cell

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Answer 1

option 2

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Answer 2

Answer:

a) long Branched

b) muscle cell

c) human egg cell

d) figure is not given