What kinds of cells are produced by meiosis in flowering plants?
a. diploid sporophytes
b. haploid sporophytes
c. haploid gametophytes
d. diploid gametophytes
Ans: c. haploid gametophytes
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Refer to the paragraph about Kawakubo's group. Kawakubo's group created a glycoprotein with a terminal NAG (i.e., a protein with NAG attached to its end). Their hypothesis is that the terminal NAG, and not the protein component , is responsible for the damage to the cell wall in H. pylori. What would be the most appropriate control for testing this hypothesis?
A) Grow H. pylori in a test tube (in vitro) with no glycoprotein. B) Destroy the H. pylori by exposing them to a hypotonic solution. Then add the glycoprotein and observe. C) Expose other species of bacteria to the glycoprotein. D) Grow H. pylori in a test tube with a glycoprotein that has its terminal NAG removed.
Which group of bacteria is most famous for their diversity of antibiotics produced? Hypothesize an ecological role production of these antibiotics might have in such environments where they are not produced at high enough levels to kill bacteria
What will be an ideal response?
Why is it useful to know the structure of a ribozyme when trying to understand a particular ribozyme's
function?
a. The way the RNA folds determines the activity of the ribozyme. We need to understand the structure in order to measure the rate of the reaction. b. It is not very useful at all; it is just a matter of curiosity. c. We need to know the structure in order to develop drugs that destroy that structure and prevent HIV infection. d. We need to be able to determine if an RNA molecule is a ribozyme or not. The only way to do that is to determine the structure. e. The way the RNA folds relates to the function of the ribozyme. If we can figure out the relationship, we might be able to develop new ribozymes that act as therapeutic agents.
Match the organism to the supergroup it belongs.
Amoeba proteus A) Opisthokonta B) Amoebozoa C) Excavata D) Chromalveolata