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Q1. The prothalli are bisexual, free-living and photosynthetic. At maturity, the prothallus is flat and heart-shaped. Inspect the lower surface for rhizoids, antheridia and archegonia. What is the function of each of these structures?
Q2. First, is it in fact true that cyanobacteria have evolved little, if at all, because Proterozoic time? And second, if that is true, how can it be explained why did these primitive prokaryotes not evolve, whereas eukaryotes obviously did?
Multicellular animals have some mechanism to control cell mass that we do not understand; for in case, salamanders of different ploidies are the same size such that a haploid, a diploid, and a pentaploid organism are about the same size.
What aspects of social and work environment in a college cafeteria will be of particular interest to a sociologist since of his or her sociological imagination.
Oceans receive materials from land primarily as runoff from rivers. Which of the statements is true regarding the materials and nutrients found in the oceans? Most elements that enter the oceans from other compartments remain suspended in the water.
Madagascar, Indonesia and the Amazon basin have some of the greatest numbers of different species concentrated in a single area. What kinds of environments do you think encourage greater biodiversity.
A man with hemophilia marries a woman whose family has no record of hemophilia. Their first child is a son. The couple is worried that their son may have inherited hemophilia. What are the chances of a hemophilic son.
In winter, plants exchange the saturated lipids in their membranes for unsaturated lipids. Unsaturated lipids are "bent" and keep the membranes more fluid since they cannot be stacked closely together. Of what benefit would this be for herbaceous pla..
Evaluate the sizes of the different digestive organs of an earthworm. Which organ is the largest? How does its size make it well suited for its function.
Cyanide binds to complex IV of the electron transport system, preventing the reduction of oxygen to water. Explain the ultimate effects of cyanide on electron transport, oxygen consumption, and ATP production. How can these in turn affect a person.
ATP synthesis by chemiosmosis (electron transport pumping protons across inner membrane) both photosynthesis and respiration take place in double-membrane organelles with own DNA Q: Which is NOT a difference between C3 and C4 plants.
Whilst playing lacrosse, Frank took a blow to the back of his neck. When she looked toward the stars but not directly at them, she could see them. Describe what was happening. Implicated in this is the fovea and its cells.
What are the Gram reactions of Clostridium and Bacillus. Unfortunately I have to submit this question which is part of my interactive computer assignment shortly that's why such a short notice. Today is a cut off day and I want to submit my assignmen..
You get a soil sample and run an enrichment culture on it. You give the organisms in the culture with all of the ingredients required for growth except for nitrogen. What result do you expect to have at the end of the experiment.
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