Cellular Respiration: Breaking down our Cellular Respiration: Breaking down Energy __ __ __ Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system that takes In nutrients, breaks them down and creates energy for the cell. The process of creating cell energy is known as respiration. Most of the chemical reactions involved in cellular respiration happen in the mitochondria. A mitochondrion is shaped perfectly to maximize its efforts. 1. What process happens in the mitochondria? 2. What is the purpose of the process in III (what does it create)? Introduction to Cellular Respiration Organisms, such as plants and algae, can trap the energy in sunlight through photosynthesis and store it In the chemical bonds of carbohydrate molecules The principal carbohydrate formed through photosynthesis is glucose. Other types of such as animals, fungl, protozoa, and a large portion of the bacteria, are unable to perform this process. Therefore, these organisms must rely on the carbohydrates formed in plants to obtain the energy necessary for their metabolic processes This means they must eat plants and other animals in order to gain energy. __ 4. Some organisms perform photosynthesis to produce energy Other organisms cannot do photosynthesis. What can __ the In animaly/criters.through the processor cellular 5. Animals and other organisms obtain the energy available in carbohydrates through the process of cellular Cells take the carbohydrates into their cytoplasm, and through a complex series of metabolic processes, they break down the carbohydrates and release the energy The energy is generally not needed immediately; rather it is used to combine adenosine diphosphate (ADP)with another phosphate to form adenosine triphosphate (ATP) molecules. The ATP can then be used for processes in the cells that require energy, much as a battery powers a mechanical device During the process of cellular respiration, carbon dioxide is given off. Plant cells can use this carbon dioxide during photosynthesis to form new carbohydrates. __ disappointed 7. What is the chemical energy in the cell called? __ 8. What does ATP stand for? __ 9. What is one product of cellular respiration? __

Orawing Conclusions About Brown Tree Ŝnakes The brown tree snake is native in areas such as Australia and eastern Indonesia. In those ecosystems, the brown tree snake is not causing the decline of bird or tree populations. So what makes this same species damaging in Guam? Identify some characteristics a species may possess that would fuel its ability to cause ecological damage, as the brown tree snake has in Guam. Provide some reasoning for why

A young researcher wants to test how well extremophiles, organisms that thrive in extreme conditions, live in different environments. She will do this by putting extremophiles of different species into different solvents. Because of limited lab space, she can run only one sample at a time, and each sample must remain undisturbed for 7 days. To reduce the total time needed to process all samples, the researcher decides to use two acidic solutions along with a control. The information below includes the extremophiles and the solvents the researcher will use in her tests. Species of Extremophiles T. prosperus A. aceti A. brierleyi H. acidophilum T. prosperus A. aceti A. brierleyi H. acidophilum Solvents Name pH hydrochloric acid 1.3 ascorbic acid 4.2 water 7.0 Name pH hydrochloric acid 1.3 ascorbic acid 4.2 water 7.0 Based on the tables, how many days will all of the researcher's experiments take? You may use the calculator. A. 7 B. 21 C. 49 D. 84

The terms in this sequence increase by the same amount each time. Work out the three missing terms to complete the sequence. 4rarr longrightarrow rarr longrightarrow longrightarrow rarr16 rarr

Which best describes oogenesis? Oogenesis involves mitosis but not meiosis. Oogenesis differentiates oogonia directly into eggs. Oogenesis starts in development and then halts until puberty Oogenesis happens in the testes

Question 24 of 25 What do prokaryotes and eukaryotes have in common? A. They both have chloroplasts. B. They both have cell membranes. C. They both have a Golgi apparatus. D. They both have a nuclear membrane.

What is 6% written as a decimal?

QUESTION 3 (a) State two (2) types of respiration. [ 2marks] (b) State the major differences between the two types of respiration mentioned in (a). [10 marks] (c) Describe the phases of Krebs cycle that produces carbon dioxide and ATP.

Clear my choice Peristalses Select one: a. The process of involuntary muscle contractions occurring in the esophagus that pushes food toward the stomach. b. The first section of the small intestine that connects in the liver and pancreas. c. Part of the urinary system, it is a reservoir for storing liquid waste in the form of urine. When urine levels are high, it sends signals to the brain that the liquid needs to be expelled. d. Small pear-shaped organ that stores excess bile produced by the liver. When the bile is needed it is released into the duodenum.

The diagram shows the unit that makes up DNA. What is it called? Enter your answer

GCE I 992 (Biology) Ouestion 3a State briefly, the symptoms shown by the deficiency of the following" Vitamin A Vitamin C Vitamink SSSCE 1994 (Practical paper) Q5. (b) State the functions of each of the food substance Foodsubstance function Fatsandoils Protein Vitamins Mineral salts Water Roughage To help food passes through the system move easily during digestion. It heips digestion to take place easily and prevent constipation. For the rest refer to notes. GCE 1993 Q3. (i) List three sources each of vitamin C and D (ii) For each vitamin, mention one disorder associated with its inadequate supply in the human body (Deficiency). Refer to notes. S.S.S.C. E. 1998 2. d. (i) Give two characteristics of the food substances: (a) protein (b) vitamin D (ii) State two uses of each of the food substances listed in (i) above to human. (iii) Describe briefly the role of roughage in the diet of humans. S.S.S.C.E. 1999 SECTION B 2 a (i) What is malnutrition? (ii) State three effects of malnutrition. S.S.S, C. E. 2002 Cancelled Que. 3d (i) Give three effects of malnutrition on humans (ii) Name two sources of vitamin A. S.S.S.C.E. 2003. What is photosynthesis? Explain how the roots of the plant obtain energy. What is a flower? State three importance of a flower. S.S.S. C.E. 1993 (practicals) 5 a (i) In testing for certain for substance in a sample, the following steps required: F-heating the test tube until contents boil II-Pour a little of the sample into a test tube III-Brick-red precipitate appears IV-Pour a little Benedict's solution into the test tube. Re-arrange and copy the above in the order in which they should occur. (ii) Which food substance could be tested for using the above steps? (iii) Which alternative reagent could be used in? b. A student placed a few drops of iodine solution on a piece of bread. (i) What observation is he likely to make? (ii) What conclusion could be draw from the observation in b (i)? (iii) The student chewed bread for about three minutes and transferred it on a watch glass. He then added a few drops of iodine solution. Describe briefly what he is likely to observe. What conclusion could be drawn from b (iii) above?