__________________________ • __________________________ • __________________________ • __________________________ 2. Which type of pathogen is always intracellular? ________________ Which type of pathogen is always extracellular? ________________ 3. Name the three main lines of defense and give an example of each: |Line of defense |Example | | |
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What is passive transport? Passive transport is the movement of substances across the cell membrane without the use of energy by the cell. During passive transport‚ substances move down their concentration gradient‚ hence no energy is required. Passive transports can happen through three different channels‚ namely 1. lipid bilayer 2. pore protein 3. carrier protein SIMPLE DIFFUSION What is diffusion? Diffusion is the movement of particles from a high density region to a low
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that provides the information for that organism. Which of the following statements about DNA is CORRECT? ……….. All cells in an organism have the same DNA‚ but differently expressed‚ providing specific cellular functions. Which of the following molecules is not found in RNA? ………… Thymine. Which of the following types of molecule would be most abundant in a typical animal cell? ‚‚……… Water. While studying the biochemistry of a species of plant found in alpine bogs‚ a biologist discovers a previously
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Biology- Change in pH Aim: To investigate the affect that change in pH levels has on a particular enzyme‚ in this case amylase. Hypothesis: In this investigation I expect as the pH reaches the optimum level‚ the rate of reaction will be fastest‚ compared to other pH levels. It is also suspected that after the enzyme has reached optimum level the enzyme activity will decrease. Through further study of the optimum level of amylase I found that the enzyme usually has an optima pH of 8. It is known
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Embryos Survive Stem Cell Harvest Pg. 2 Embryos Survive Stem Cell Harvest Pg. 2 Prevent skin cancer cause by the UV rays with the new Eucerin sun block cream protector Prevent skin cancer cause by the UV rays with the new Eucerin sun block cream protector November‚ 2012 issue November‚ 2012 issue The CELL-O Magazine by mariana carroll and esteban cruz The CELL-O Magazine by mariana carroll and esteban cruz Pg 4 How to prevent cancer? There are a lot of ways to
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1. What are the characteristics of a living organism? 2. How do you determine the TOTAL magnification of the field of view of a microscope? 3. What is homeostasis? How is homeostasis important to the survival of an organism? How is homeostasis maintained in a human? 4. What is the difference between diffusion and osmosis? 5. Define osmosis‚ hypertonic‚ hypotonic‚ isotonic solutions 6. What happens if you have a high concentration of salt water on the outside of the egg‚ yet there is very little
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Michelle Gordon‚ TJ (Group 4) Section 33 Yeast Cell Respiration 10/04/2010 Part B: Explanation of Results All cells carry out the process of cell respiration in order to meet their energy needs. It is advantageous for cells to have the ability to metabolize different substrates. In this experiment‚ we investigated each sugar’s (glucose‚ lactose‚ sucrose‚ fructose‚ and lactose/lactaid) cell respiration rate. When referring to my group’s graph and data‚ glucose ended up with the highest
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nitrogen. Living organisms are made up of molecules that consist of carbon and these three other elements. Carbon atoms can also bond to each other‚ which gives carbon the ability to form millions of different large and complex structures. Many of the organic compounds in living cells are macromolecules or “giant molecules”‚ made from thousands or even hundreds of thousands of smaller molecules. Most macromolecules are formed by a process known as polymerization‚ in which large compounds are built by joining
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differences between organisms easily. 2 /2 points 2. If two organisms belong to the same phylum‚ they both must also belong to which of the following? (2 points) (0 pts) class (0 pts) genus (2 pts) kingdom (0 pts) order 2 /2 points 3. Why might knowledge of the gene and protein sequences of a species be useful in classifying that species? (2 points) (0 pts) It would allow more accurate naming of the species by basing names on genes rather than appearance. (0 pts) It would
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AP Biology Sunday‚ October 24‚ 2010 Enzyme Lab Write-Up Purpose: To observe how an enzyme affect the speed of chemical reaction. To describe how the concentration of an enzyme affects its ability to work. Hypothesis: Depending on the concentration of the catalase which the disk is soaked in‚ it will have a direct correlation on the rate of hydrogen peroxide being broken down into oxygen gas. Prediction: Since the rate of reaction can be lowered by the addition of
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