Discussion of modified leaves, stems, roots, flowers

Angiosperms (flowering plants) are the largest Phylum in the plant kingdom (Angiospermophyta is also called Anthophyta or Magnoliophyta). These plants have true roots, stems, leaves and flowers. The roots grow into the soil to anchor the plant in place and take up water and nutrients. The leaves are above ground and act as the main organs for photosynthesis. Stems act as aboveground support for the plant and operate as conduits to move nutrients and water throughout the plant. Flowers contain the male and female reproductive organs of the plant. With these anatomical features in mind, do some research to find an angiosperm that has modified leaves, stems, roots or flowers that do not ... click for more

Taxation and double taxation risks (give examples)

What is taxation and double taxation risks (give examples)

Biology

Professional sport competitions are highly competitive. Athletes sometimes search for advanced technology and medicine for performance enhancing solutions. The protein, creatine, is a highly controversial supplement available to athletes wanting to increase performance. Creatine is a natural substance produced in the body. It is taken up by muscle cells and converted to phosphocreatine. Phosphocreatine is a source for the production of adenosine triphosphate, ATP. Why would having more ATP be advantageous to an athlete? Do you think professional athletes should be banned from the use of creatine supplement? Why or why not?

Biology

1. Define metabolism, and explain how reactions can be coupled to one another. 2. Briefly describe the light-dependent and light-independent reactions. In what part of the chloroplast does each occur? 3. Why is oxygen necessary for cellular respiration?

Biology

1. Descsribe Lamarck’s theory of inheritance of acquired characteristics. Why is it invalid? 2. What are the two major types of reproductive isolating mechanisms? Give examples of each type and describe how they work. 3. List four distinguishing features of chordates.