Lesson 6: Cell Modification

Question 1

are alterations in cells that distinguish them from one another

Answer 1

cellular modification

ar commonly found in eukaryotic cells

Question 2

extensions on the cell membranes that help increase the surface area of the cell, thus, falilitating increased absorption of nutrients

Answer 2

microvilli

found in cells in the small intestines

Question 3

facilitate the transmission of impulses from the brain and the spinal cord to the parts of the body

Answer 3

nerve cells

Question 4

have bioconcave disc shape and are highly deformable

Answer 4

red blood cells

Question 5

familiarize:

what happens when RBCs lose their nucleus?

Answer 5

there is an increase in the surface area for gas exchange, thus, enabling optimal oxygeneration of tissues

Question 6

have cili that heat and drive air impurities or foreign particles and musus secretions

Answer 6

trachea cells

Question 7

have a tail, flagellum, which propels it toward the egg cell

Answer 7

sperm cells

Question 8

why does sperm cells have plenty of mitochondria along their middle piece?

Answer 8

because they power the flagellum to move the sperm cells toward the egg cells

Question 9

elongated outgrowths from the outer layer of cells in a root that help absorb water and minerals

Answer 9

root-hairs

Question 10

elongated in shape, and are loaded with chloroplasts since they are involved in photosynthesis

Answer 10

palisade layer of mesophyll

Question 11

they have pits and pores while some are hollow, which help in the process of material transport

Answer 11

xylem and phloem

Question 12

cells are joined together in long-term associations, forming tissues and organs

Answer 12

cell-cell junctions

points where two cells come together