In the early 1800s, cats that European people had brought to Australia escaped into the wild. Cats have very few natural predators in Australia. Cats are excellent hunters of small animals and birds, with greater skill in hunting than animals native to Australia. Given this information, how might cats have affected the native species of Australia? A Cats probably did not affect native species. The presence of cats forced native animals to adapt and change.
B Cats probably harmed native species. Cats may have hunted some species to extinction.
C Cats probably helped native species. Cats increased biodiversity on the continent, which is important in an ecosystem.
D It is not possible to determine how cats affected the native species of Australia.

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

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.

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm