Biology Key Points for O Level

Please answer these questions then place them in the drop box for this lab. Use Microsoft word if possible.

The leaves of a plant are the main photosynthetic organs and are involved in gas exchange and water transportation throughout a plant (Evans et al, 17). A leaf typically consists of an upper and lower epidermis, the mesophyll cells, veins, guard cells and stomata. The mesophyll cells contains spongey cells which have large gaps between each cell to allow oxygen and carbon dioxide circulation. The mesophyll cells contain palisade cells, which are located beneath the upper epidermis. The palisade cells contain many chloroplasts, which are green organelles. Located in the internal layers of chloroplasts is the pigment chlorophyll which is involved in trapping the light energy in photosynthesis (Evans et al, 17).

According to Mattias Schleiden and Theodor Schwann the cell is the basic unit of life(Cell Theory- OI). Two common types of cells are the plant and animal cells. Although both kinds of cells share many similar, abundant structures, they also have varying descrepancies from cell to cell. Without a doubt, the nucleus is the most important organelle in the plant cell, even though, the lysosome is the most important structure in the animal cell.

B7 (Biotin): Depression, lack of intestinal absorption, inflamed bowel syndrome, skin irritation, hair loss, poor muscle control, seizures, development delayed

3a. Body more than five times as long as broad; front edge of dorsal fin far

K. Paraphrase the three potential fates of the excited electron produced when a photon meets a chlorophyll molecule

Temperature: Measure of the average speed of molecules rather than the total amount of heat energy in matter.

The final 2 property points were earned for the description and discussion of specific heat.

The areas of Michael's brain that were injured during his birth affected his control over his voluntary movements. Which part of the nervous system distributes motor commands to skeletal muscles?

A chemical reaction involving the transfer of electrons rather than molecules is classified as a Redox reaction. A reaction involving the loss of electrons is called Oxidation, and a reaction involving the gain of electrons is called Reduction. Oxidation and Reduction always occur together, as one reactant loses electrons, and the other gains them. This exchange often effects the physical states of molecules, as their solubility is changed with their charge.

1) The layer of the GI tract wall that is responsible for motility is the

In eukaryotes, stored primarily in the cell nucleus. A nucleic acid using deoxyribose rather than ribose.

Hydrolysis of starch for fungal amylase Aspergillus Oryzae and bacterial amylase Bacillus Licheniformis at different temperatures.

Lab Manual    Introductory Biology (Version 1.4)    © 2010 eScience Labs, LLC  All rights reserved  www.esciencelabs.com • 888.375.5487    2  Table of Contents:    Introduction:          Lab 1:   The Scientific Method  Lab 2:   Writing a Lab Report  Lab 3:  Data Measurement  Lab 4:  Introduction to the Microscope    Biological Processes:            Lab 5:   The Chemistry of Life 

represents a type of potential energy that accounts for the both concentration and the membrane