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Bio 2nd Quarterly
Gr 10 Bio 2nd Quartely Exam
| Question | Answer |
|---|---|
| What are Autotrophs? | Organisms who make their own food (Plants) |
| What are Heterotrophs? | Organisms that gain energy from the foods they consume (humans, cow, horse) |
| How is energy released from ATP? | Breaking the chemical bond between 2nd & 3rd phosphates |
| What are the components of the ATP molecule? | Adenine, ribose, and the 3 phosphate groups |
| Photosynthesis uses sunlight to convert water and CO2 into? | High energy sugars & Oxygen |
| In the overall equation 6 molecules of CO2 results in 6 molecules of? | 6O2 |
| What are light obsorbing molecules called? | Pigments |
| Why do plants appear green? | Reflects green light or does not absorb green color. |
| WHere do light dependent reactions take place in photosynthesis? | Thylakoid |
| What things affect the rate of photsynthesis? There are 3 main ones. | Light intensity, Water, Temp |
| What is the correct equation for cellular respiration? | 6O2 + C6H2O ->6CO2 + 6H2O + Energy |
| Cellular respiration breaks down | glucose, and other food molecules |
| Which process takes place within cytoplasm of cell? | Glycolosis --> 2 pyruvic acid |
| What is the net gain of ATP during glycolysis? | Two |
| What is the starting molecule for glycolysis? | Glucose |
| What is the name for the electron carrier in cellular respiration? | NAD+ |
| What are the main types of fermentation? | Alcoholic fermentation and lactic acid fermentation |
| What happens in lactic acid fermentation? | Pyruvic acid +NADH -->> lactic acid + NAD+ |
| What happens in alcholic fermentation? | Alcoholic -->> pyruvic + NADH -->> alcohol, CO2, NAD+ |
| When oxygen is present what is glycolosis followed by? | Krebs Cycle |
| what substances pass high energy electrons into the electron transport chain? | NADH and FADH |
| What do pairs of high energy electrons provide energy for? (What do they do?) | Convert ADP to ATP |
| What is oxygen debt? | Extra oxygen required by muscle tissue Breathing heavily repays oxygen debt. |
| What are the problems with cell growth? | The larger a cell becomes the more demands it places on DNA, problems moving nutrients & waste across the cell membrane. OXYGEN IS NOT A PROBLEM |
| What is cell division? | Process by which a cell divides into 2 daughter cells |
| After cell division describe the daughter cells. | Each daughter cell has a copy of DNA and higher surface area and volume than parent. |
| When do chromosomes become visible during the cell cycle? | Prophase |
| What are G1, G2, and M Phase? | All the satages of the cell divison. |
| Determine from the figure in text and copied on your exam when cell division occurs? | MPhase |
| Define the cell cycle. | Series fo events that cells go through as they divide. |
| What is a centromere? | Point on a chromosome which is attracted to sister chromatia |
| What are sister chromatids? | identical paired chromosomes |
| What is the 1st phase of Mitosis? | Prophase |
| When do cells line up in the middle of the cell? | Metaphase |
| What is the roll of the (spindle) fibers? | Help line up the chromosomes & pull apart |
Created by:
squints0609
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