Biologie
Biologie cellulaire, génétique, écologie et bases des sciences de la vie.
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34.) which of these wrenches should be used to avoid rounding tire nuts…
A. Box end
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35) the steering angle that helps a vehicle return to a straight - ahea…
D. caster
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18) a vehicle with electric power steering (eps) has hard steering effo…
A. An open power steering assist fuse
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the ecological pyramid below can be used to understand how energy is tr…
B. decomposers consume energy at each trophic level.
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define homeostasis?
Homeostasis is the maintenance of a relatively stable internal environment in an organism or system, often achieved through feedback mechanisms.
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characteristics of successful entrepreneurs (part 2) • include ◦ is an …
adaptability, influence, business, intelligence, uncertainty, innovation
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which event took place during the copernican revolution, when most peop…
Copernicus rediscovered Aristarchus's heliocentric model.
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part i - multiple choice (20 points) circle the best answer for each qu…
1. B. It decreases the effect of a change 2. C. Fats 3. B. \(H_2O\) 4. C. Carbon 5. B. It reacts with bacteria and destroys them 6. B. Less dense than water 7. A. grams (Note: Tec…
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3. which of the following is not an example of vernacular? using a dial…
using alliteration, such as "the bright beams of blue light"
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evaluating alternatives • is the fourth step in creating a personal fin…
Evaluating Alternatives: - Second blank: analyzing - Third blank: pros - Fourth blank: feasible Finalizing the Plan: - First blank: personal - Second blank: decisions - Third blan…
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opponents to modernizing our communitys levees argue that the cost is p…
B. The sentence uses parallelism to make the point memorable and to add a sense of urgency to the author’s argument.
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4. a light - duty pick - up truck with a rear leaf spring suspension sy…
C. Both A and B
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3.) technician a says that faulty shock absorbers can cause rebound bum…
C. Both A and B
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10 multiple answer 1 point what is the difference(s) between aerobic an…
A. Aerobic produces more ATP than anaerobic; D. Aerobic requires oxygen; anaerobic respiration does not
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2.) before removing the pitman arm from the sector shaft on a power ste…
B. mark the components for reference.
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which process makes more atp per glucose molecule? lactic acid fermenta…
1. aerobic cell respiration 2. carbon dioxide 3. they produce lactic acid
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what determines the proportion of slow and fast twitch muscle fibers in…
- First question: B. genetics - Second question: D. aerobic cell respiration
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multiple choice 1 point what determines the proportion of slow and fast…
B. genetics # 6.
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what would a sprinter eat to give him energy right before a race? olive…
For the first question: pasta. For the second question: fast twitch muscle fibers.
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what energy molecule fuels all cellular work, including muscle contract…
1. B. ATP 2. C. carbohydrate - starches
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7 which process performed by plants removes carbon dioxide (co2) from t…
7. B. Photosynthesis 8. D. Burning fossil fuels 9. False 10. True 11. False 12. False 13. Assimilation 14. Phosphorus 15. Weathering, Erosion 16. Nitrification
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creating a financial plan • involves the following steps ◦ the financia…
1. identifying 2. determining 3. alternatives 4. reviewing
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question 1 - 6 the list below identifies four americans whose parents w…
C. African American inventors made contributions to the Second Industrial Revolution
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question 1 of 6 submit test ush.unit3.riseofindustry check question 1 -…
Railroads encouraged the growth of cities and the creation of a national market.
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read the passage. the ancient egyptians are widely considered to be gro…
The second paragraph expands on the discussion of blue dye's origins by detailing the dye's production method and historical uses.
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identify the type of tissue. drag the label under the correct image. ep…
1. Muscle 2. Nervous 3. Connective 4. Epithelial
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drag the type of tissue to the description that fits it. some will be u…
1. Epithelial 2. Connective 3. Nervous 4. Epithelial 5. Muscle 6. Connective 7. Connective 8. Epithelial
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what energy molecule fuels all cellular work, including muscle contract…
1. ATP 2. carbohydrate - starches 3. apples
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read the passage. conservation efforts play a critical role in protecti…
babies or offspring
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8 nutrients circulate endlessly throughout the environment in complex c…
8. D. biogeochemical cycles. 9. B. Absorbs more carbon than it releases. 10. B. Fewer plants are available to perform photosynthesis, removing carbon. 11. C. Sediments/Geosphere. …
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biome temperature rainfall facts tropical rainforest all year round rai…
Warm, abundantly, most complex
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name 15 only 3% of earths total water is freshwater, and most of that i…
15. False 16. False 18. False 19. False 20. D. all of the above 21. B. the mining and burning of fossil fuels. 22. A. Burning fossil fuels in industry increases greenhouse gases i…
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44 which of the following best describes the u.s. economy? a. free mark…
44. d. mixed 50. c. central planning
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answer each question carefully. 1 water molecules are composed of a two…
B. One oxygen atom and two hydrogen atoms. # 2.
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net primary production: the ______ matter, or biomass, that remains aft…
Net Primary Production: The organic matter, or biomass, that remains after respiration. What is a biome? A group of ecosystems that share similar climate and soil conditions. Cate…
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this is a device that will convert mechanical, into electrical energy. …
1. Generator 2. Motor 3. Solar cell 4. Battery 5. Light bulb 6. Capacitor
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biomes notes biotic factors: any part of an that is or was living at …
Biotic Factors: any part of an **ecosystem** that is **living** or was living at one time. Abiotic Factors: any part of an **ecosystem** that is **not** living. Natural Selection:…
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the image depicts a source of renewable energy, geothermal energy. this…
B. Steam emitted from earth can turn turbines, which can power a generator to convert mechanical energy into electricity.
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hillary babysits for $8 per hour. she also works as a math tutor for $1…
- Las desigualdades son $x + y\leq15$ y $8x + 15y\geq150$. - Las soluciones válidas son $(0,10)$ y $(8,6)$.
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le guide alimentaire canadien recommande une alimentation riche et vari…
1a) Une darne de saumon, Du fromage, Un œuf cuit dur 1b) Une tranche de pain de seigle, Du riz complet 1c) De la purée de citrouille 2a) Les pois chiches 2b) Le céleri 2c) Le grua…
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which action shows that president theodore roosevelt did not always rel…
He negotiated the Treaty of Portsmouth.
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soon after the uss maine sank, yellow journalists questioned witnesses …
exaggerated the truth about the event.
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which are characteristics of yellow journalism? choose three correct an…
sensational language, exaggeration, eye - catching headlines
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multiple - choice question the industrial revolution gave a world of fa…
Children worked long hours in factories. Cities grew and became filthy.
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1 our house was once a stop on the underground railroad. 2 it was commo…
sentence 2
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1 our house was once a stop on the underground railroad. 2 it was commo…
sentence 3
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paul reveres home paul reveres house was built in the 1680s and purchas…
Paul Revere's house
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map: the revolutionary war british and colonial troops the revolutionar…
They were not familiar with the land.
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map: the revolutionary war british and colonial troops the revolutionar…
It had a powerful, well - trained army.
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map: the revolutionary war major battle locations massachusetts bay col…
Massachusetts Bay, New York, and Pennsylvania
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map: the revolutionary war major battle locations which major port city…
B. Boston
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what was the primary purpose of the neutrality proclamation of 1793? a …
a. To maintain American neutrality in European wars b. To establish a system of federal courts b. It sparked significant controversy and opposition d. Alexander Hamilton
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the intolerable acts the aftermath of the boston tea party the british …
the Boston Tea Party
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gene expression—translation how do cells synthesize polypeptides and co…
a. Nitrogen - containing bases in mRNA. b. Amino acids. c. A sequence of three mRNA nucleotides (a codon) codes for a single amino acid.
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22. what was a key purpose of liberty poles during the revolutionary wa…
- 22. d. To serve as a symbol of defence against British rule - 23. c. The army underwent crucial training and rebuilding - 24. b. A leading Federalist - 25. b. Right to bear arms…
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15. who were the camp followers during the revolutionary war? a. childr…
15. d. Women and families who followed the armies to provide support services. 16. a. He was a Mohawk leader who supported the British and led Native American forces. 17. a. Weakn…
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8 who introduced the resolution that called for the colonies to be free…
- 8. a. Richard Henry Lee - 9. c. It convinced France to join the war as an ally - 10. a. They provided essential services like nursing and laundry - 11. d. James Madison - 12. a.…
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1 which amendment reserves any power not granted to the federal governm…
1. c. Tenth Amendment 2. c. The right to gather peacefully 3. a. New Jersey Plan 4. c. To promote the ratification of the U.S. Constitution 5. a. The federal government and state …
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which excerpt from winona ladukes \a case for wilderness\ best appeals …
Migratory birds depend on cues from properly timed seasonal schedules. Artificial lights can cause them to migrate too early or too late and miss ideal climate conditions for nest…
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read the excerpt from \a case for wilderness.\ nocturnal animals sleep …
Logos and reason.
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11. 1. uracil bonds with adenine. 2. complementary bonding between codo…
3, 1, 4, 2
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6. state one role for each of the following molecules in the process of…
- DNA: Stores genetic information and is the template for transcription. - mRNA: Carries genetic code from DNA to ribosomes for translation. - tRNA: Brings specific amino acids to…
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name: block: mark: out of pesg: dna replication & protein synthesis 1. …
a) To translate mRNA codons into an amino - acid sequence. b) Ensures accurate DNA replication (complementary base - pairing). c) Allows tRNA to bring the correct amino acid to th…
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vocab quiz drag and drop the appropriate definition to match it with th…
Anaerobic respiration: Cellular respiration that uses any ion or molecule other than \(O_2\) to accept electrons from the electron transport chain. Aerobic respiration: Cellular r…
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the ethanol produced is the psychoactive ingredient in alcoholic bevera…
- First question: True - Second question: ~5% - Third question: Cellular respiration resumes because the pyruvate is processed to feed the citric acid cycle and ETC.
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nadh and fadh₂ carry the electrons theyve gained to the etc. those elec…
- Glycolysis starts with an "investment phase" that adds phosphate groups to 6 - carbon sugars and uses 2 ATP. - In reaction 6, an isolated phosphate group, not one that is part o…
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once again the details arent important, but here the \ is an abbreviati…
False
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cellular respiration overview the outcomes of the five stages of cellul…
True
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cellular respiration overview the outcomes of the five stages of cellul…
True
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cellular respiration is going on right now in virtually every cell in y…
The first diagram (where glucose is input for glycolysis, pyruvate is input for pyruvate processing, and acetyl - CoA is input for citric acid cycle) is correct.
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burning is a redox reaction that oxidizes c - c and c - h bonds into c …
- When the sodium - potassium pump is phosphorylated, it changes shape in a way that allows it to move sodium and potassium ions across a membrane against a concentration and elec…
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this is the overall formula for the redox reactions that are going on d…
- You exhale carbon dioxide (\(CO_2\)). - You breathe in molecular oxygen (\(O_2\)). - You take in the sugar glucose (\(C_6H_{12}O_6\)) when you eat, and your cells convert other …
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how do your cells produce enough atp to keep you alive? the answer — a …
Oxidation Is Loss; Reduction Is Gain.
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why is the shape of an enzyme important for its ability to catalyze a c…
- The reactants fit precisely in an enzyme's active site, so different reactants cannot fit into the enzyme. - The shape of the enzyme forces the reactants into spatial orientatio…
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which statement best describes how an enzyme affects the activation ene…
Interactions between reactants and specific R - groups in the enzyme stabilize the transition state, which reduces activation energy.
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which characteristics of enzymes are accurate? select all that apply. e…
Enzymes lower the activation energy of chemical reactions, Enzymes can only use specific molecules as substrates.
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pyruvate kinase is a major enzyme involved in energy metabolism. pyruva…
The chemical bond broken in PEP has higher potential energy than the chemical bond formed in ATP; PEP has higher free energy than pyruvate; Reaction 1 releases more free energy th…
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the na+/k+-atpase transports sodium ions (na+) and potassium ions (k+) …
- Second statement: Breakdown of ATP by \(Na^{+}/K^{+}\)-ATPase is a spontaneous process. - Third statement: The coupling of \(Na^{+}\) and \(K^{+}\) transport with breakdown of A…
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addition of a phosphate group to a protein increases the proteins poten…
- Second statement: "The negative charges in phosphate can repel neighboring R - groups, eventually changing the shape of the protein." - Fourth statement: "The increased potentia…
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the structure of atp is shown below.which feature of atp contributes th…
The repulsion between the closely packed negative charges in the three phosphate groups.
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why might the breakdown of adp be less useful than atp when coupled to …
ATP has three negative charges while ADP only has two, so ADP has less potential energy.
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multiple choice 3 points to make one molecule of glucose you need 9 atp…
Sugarcane - \(C_{4}\), Rice - \(C_{3}\), Cactus - \(CAM\), first organic production of carbon fixation is 3 - phosphoglycerate - \(C_{3}\), first product of Carbon fixation is oxa…
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the cell membrane-practice problems 48.00 points possible | due friday …
Deepwater sculpin have phospholipids with shorter tails and thus weaker hydrophobic interactions between neighboring lipids in their membranes. Deepwater sculpin need to have more…
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the cell membrane-practice problems 48.00 points possible | due friday …
Fluidity will decrease because DHA is an unsaturated fatty acid so its presence usually increases membrane fluidity. Permeability will be altered but other changes in the membrane…
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metabolic syndrome is a collection of conditions — including high blood…
- Membrane fluidity will decrease, causing the cell membranes to become stiff and inflexible. - Membrane permeability will decrease so that movement of molecules through the cell …
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the fluidity of cell membranes is highly regulated by cells such that s…
- B. Increase in the percentage of cholesterol. - C. Increase in the percentage of saturated lipids. - D. Increase in the average length of lipid tails.
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cholesterol is an essential component of your cell membranes, in part b…
Fish that are missing cholesterol will not be able to adapt as well to different temperatures within the lake so they will need to stay at a depth where the temperature is "just r…
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could a cell membrane made from the martian molecules function as a bar…
No, because the tails of the Martian molecules have polar bonds so they are hydrophilic. Therefore ions and other polar molecules can interact with the entire membrane and thus pa…
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how could you change this molecule to make it soluble in the hydrophobi…
- Replace the \(O\) in box 1 with two \(CH_3\) groups - Replace the \(H\) in box 2 with a \(CH_3\) group - Replace the \(O\) in box 1 with \(H\)s
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a protein called the cystic fibrosis transmembrane conductance regulato…
Chloride ions can no longer diffuse across the membrane, unless other ion channels specific to chloride are present and open.
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cell membranes are an essential element of life because they create a b…
B. Cell membranes provide a barrier to the free passage of charged or large polar molecules because these molecules cannot interact with the hydrophobic tails of membrane lipids. …
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i. the aug codon always initiates translation and codes for the amino a…
The text is explaining the basic concepts of translation initiation in molecular biology, specifically the role of the AUG codon, tRNA, and the complementary base - pairing betwee…
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the cell membrane-practice problems 48.00 points possible | due friday …
Your cells would swell because the concentration of molecules in solution would now be higher inside the cell than outside the cell and water would diffuse through the membrane in…
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the viability — or aliveness — of cells being grown in a lab is often a…
The concentration of water is higher inside the cell than out so water molecules will diffuse out of the cells, causing them to shrink.
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oxygen gas (o₂) is carried to all of your organs and tissues through yo…
Oxygen will move from the blood into the muscle by diffusing directly through cell membranes.
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which statements about diffusion are accurate? select all that apply. m…
- B. Diffusion across a cell membrane may occur through protein transporters. - D. Net movement of molecules is from areas of high concentration to areas of low concentration. - E…
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use these words in a short paragraph to explain how enslaved people wer…
The market revolution had a profound impact on enslaved people. The invention of the <u>cotton gin</u> made cotton production more efficient, leading to an increased demand for co…
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the steps of transcription are as follows: ①. a specific section of dna…
① unwinds ② RNA polymerase ③ phosphodiester; transcribed (or synthesized); rewinds (or re - anneals); cytoplasm; nucleoli
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imagine you have just discovered new life forms from another planet. yo…
- The space in the center of this phospholipid arrangement is a hydrophobic environment. - The phospholipids in this structure could interact with other biomolecules such as prote…
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the fluidity of the cell membrane is highly regulated such that some re…
The transmission of signals between brain cells will be less efficient.