Page 39 - Demo 1

The microvilli are covered
by their own plasma membrane.
They contain almost no
organelles, but they do have
cytoplasm (cellular fluid) and
some microfilaments (strands of
acn, a protein), which help give
them their structure. Microvilli
are most oen found in the small
intesne, on the surface of egg
cells, as well as on white blood
cells. In the intesne, they work in
conjuncon with villi to absorb
more nutrients and more
material because they
Figure 24. Lumen of small intesne expand the surface area of the
Source:

https://upload.wikimedia.org/wikipedia/commons/thumb/ intesne.
0/0e/Villi_%26_microvilli_of_small_intestine.svg/2000px-V
illi_%26_microvilli_of_small_intestine.svg.png

Learning Tasks and A ssesment

Acvity 1. On the image of a corn stem cross secon below, indicate the
following cells: (1) parenchyma, (2) collenchyma, (3) sclerenchyma,
(4) xylem vessel, and (5) phloem.

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