1.What happens during cytokinesis? -the cytoplasm divides***
-the cytoplasm falls apart
-the cytoplasm changes color
-the cytoplasm becomes solid
2.The process of differentiation is:
-a process by which cells divide
-a process by which cells become specialized***
-a process by which cells die
-a process by which cell repair themselves
3.What is unique about stem cells?
-they are differentiated
-they are only found in embryos
-they are unspecialized***
-they are only found in plants
4.What is one property of a senescent cell?
-it can no longer divide***
-it can live for a very long time
-it can grow and divide rapidly
-it can no longer be replaced
5.How do cells respond if a complex organism is injured?
-cells rush to the damaged area, proliferate through mitosis, and work to repair the injury ***
-cells work to repair the injured area through meiosis
-nearby cells change the stem cells in order to repair the injury
-cells form a blastocyst that contributes to the healing of the injury
(I took the connexus quick check and these were right)

With the description of the different cell walls, membranes, and associated proteins set in the students' minds, you now need to introduce them to the idea that the cell wall can also act as a foundation to build things upon. bacterial appendages require a strong foundation that will offer the support needed to move and function in a dynamic world. for example, flagella are long, whiplike protein structures that are used by many gram-positive and gram-negative bacteria for locomotion. in order to function effectively, a flagellum must be firmly anchored to the cell wall. how will you be able to get across the idea that the peptidoglycan cell wall is strong enough to support such a mechanism? with a protein rod that passes through the cell wall and protein rings used to anchor it in the membranes, these basal bodies are the rudimentary biological motors that use atp power to spin the hook and the flagella attached to it. bacterial flagella have a biological motor that spins within the cell wall and is powered by atp. this allows the flagella to spin in a whiplike motion to propel the bacterium.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -