The function of tight junctions in epithelial tissue is to increase the surface area;

a. increase the strength and integrity of the tissue layer
b. increase the solute uptake in the tissue
c. increase the selectivity of transport across the tissue layer
d. increase the flow of water across the tissue layer.

Explanation:

Cell junctions are specialized sites where two cells join, cell junctions are of three types:

Anchoring junctions, tight junctions, communicating junctions

Anchoring junctions hold cells together and communicating junctions connect two cells directly, communicating junctions include: gap junctions and plasmodesmata

Tight junctions seal paracellular boundaries of epithelial cells and prevent leakage of ions and diffusion of proteins in membrane

Proteins which form tight junctions are called claudin, occludin

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."