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BIO 121 ULL Povinelli Test 3 Questions with Correct Answers RNA - ANSWER-What macromolecule is transported through the nuclear pores of the nucleus? transcription- RNA from DNA translation- Ribosomes to proteins - ANSWER-What is the correct sequence in building and packaging a protein, beginning inside the nucleus? studded with ribosomes - ANSWER-Why is the rough endoplasmic reticulum described as "rough" a membrane-enclosed bubble of digestive enzymes that can break down an...

BIO 121 Lab 2 Exam (Labs 6-10) Complete Solutions Heterozygous - ANSWER--An organism that has two different alleles for a trait -Ex: Aa Dominant - ANSWER-An allele is expressed no matter what the second allele is Recessive - ANSWER--An allele that is masked when a dominant allele is present -Only expressed when the second allele is the same Know how to construct a monohybrid/dihybrid punnet square - ANSWER- Predictions of phenotypic ratios of offspring results of a monohybrid ...

Bio 121 LCC Exam 1 Questions and Answers covalent bond - ANSWER-To obtain a full shell by sharing electrons Electronegativity - ANSWER-inc left to right and down to up, The closer an atom has to a dill shell the stronger it desires electrons Properties of water - ANSWER--Has a high specific heat and resists temp changes -Cohesion of water molecules accounts for surface tension and transportation Specific heat - ANSWER-The energy required to heat one gram of a substance by one Kelv...

BIO 121 Past Exam and Practice Exam Questions with Verified Answers Below is a graph of CO2 concentration in the northern (solid line) and southern hemisphere (dashed kine). What is most likely driving these oscillations? - ANSWER-In the northern hemisphere, photosynthesis by plants in summer generates a CO2 decrease During Pre-synthesis interphase before meiosis a cell has 1 g of DNA. Are each of the resulting cells diploid or haploid and how many grams of DNA does each cell contain at ...

Bio 121 Purdue Exam 3 Notes Questions and Answers cohort - ANSWER-generation Type 1 - ANSWER-low mortality until old age, humans/elephants, K-selected Type 2 - ANSWER-constant probability throughout life Type 3 - ANSWER-high juvenile mortality rate, sea turtles, R-selected Mx= - ANSWER-# of daughters per female at age X Life Table - ANSWER-Interpret population demographic parameters what are the 4 columns in a life table? - ANSWER-X(age), Lx, Mx, Lx*Mx How to find Ro in...

Bio 121 Test Questions with Correct Answers The axon hillock of a neuron is considered the: - ANSWER-Triggering zone What is a false statement regarding graded potentials? - ANSWER-They are self propagating What is an incorrect description of a graded potential? - ANSWER-It has a refractory period If a neuron were experimentally stimulated at both ends simultaneously: - ANSWER-The action potentials would stop as they met in the middle An action potential develops when: - ANSWER-...

Bio 121 Lab 1 Exam Questions with Complete Answers Orientation of an object in a compound microscope - ANSWER-Upside down & mirrored*** Stage - ANSWER-Where the specimen rests Clips - ANSWER-Used to hold the specimen still on the stage Stage controls - ANSWER--Device that allows you to move the specimen in controlled, small increments along the x & y axes (useful for scanning a slide) Lamp - ANSWER-Produces light Rheostat - ANSWER-Alters the current applied to the lamp to co...

Bio 121 Final Exam Review Questions with Complete Answers ecology - ANSWER-study of interactions among organisms and between organisms and their environment ecological levels of organization - ANSWER-1. biosphere 2. ecosystem 3. community 4. population 5. organism key concepts of ecology - ANSWER-at 2. niche habitat - ANSWER-consists of living and non-living elements around the organism (which is scale dependent) niche - ANSWER-reflects the use of resources and its function...

BIO 121 Exam 6 Study Questions and Answers Breastfeeding is recommended for the first year of life. However there are numerous factors that can influence a woman's decision to breastfeed. Choose all of the factors that can influence a woman's decision. - ANSWER-Work, physical ability, social concerns and norms, and education on the benefits of breastfeeding. True or False. If false, explain why it is false. Prolactin is a thick yellowish substance rich in protein and immune facto...

BIO 121 EXAM 4 QUESTIONS AND ANSWERS ___________ organisms have more variety in cyclins/Cdks, because they need to respond to more complex signals - ANSWER-Multicellular Growth factors are a large family of molecules that when bound to their receptors, launch ______ ______ that lead to changes in cyclin and cdk levels, controlling the cell cycle. - ANSWER-signaling cascades The protein signaling pathways are complex, but ___ is of note. When it is phosphorylated (turned on), it can re...

BIO 121 Exam 3 Review Questions with Latest Update Cyclin - ANSWER-A cellular protein that occurs in a cyclically fluctuating concentration and that plays an important role in regulating the cell cycle Cyclin dependent kinase (cdk) - ANSWER-A protein kinase that is active only when attached to a particular cyclin MPF - ANSWER-Maturation -promoting factor; protein complex required for a cell to progress from late interphase to mitosis; helps initiate mitosis Gametes - ANSWER-Reprodu...

Bio 121 Exam 3 Questions with Complete Answers reproductive barrier - ANSWER-any mechanism that isolates one part of a population from another will cause split into 2 evolutionary lineages they will evolve independently from that point taxonomy - ANSWER-naming identifying and classifying roughly synonymous with systematics classification - ANSWER-assigning to categories binomial names - ANSWER-2 words: genus name + specific epithet (Homo Sapiens) Hierarchical Classification ...

Bio 121 Exam 2 Questions with Correct Answers you discover a new organism with the following characteristics: a wormlike body with a fluid-filled cavity, a feeding organ that looks like a proboscis, and a complete digestive tract. this organisms is most likely a(n) - ANSWER-ribbon worm which feature is not a characteristic of the phoronids? - ANSWER-active foraging and carnivory which feature is not associated with the annelids? - ANSWER-trichinosis which group includes animals wit...

Bio 121 Exam 1 ULL Questions with Complete Solutions science - ANSWER-is an approach to understanding the natural world through inquiry. a search for information, evidence, explanations, and answers to specific questions. hypothesis - ANSWER-is a proposed explanation to a question that can be investigated observation - ANSWER-the action or process of observing something or someone carefully or in order to gain information. question - ANSWER-a question that needs to be open for experi...

BIO 121 Exam 1 material General Intro/Concepts Correct Answers What are some examples of making models to construct theories? - ANSWER-1) Marie Curie and Radium 2) Xenopus Antibiotics How many ways are there to obtain data? - ANSWER-2 Experiment - ANSWER-Hypothesis testing Theory: - ANSWER-A hypothesis that hasn't been falsified after many tests How should an experiment be set up? - ANSWER-Observation -> Falsifiable Hypothesis (definition) -> Predictions (That you can ...

BIO 121 Exam 1 Lecture 2 Purdue Q&A Plantae - ANSWER-What kingdom is all plants, photosynthesis, and cell wall? Fungi - ANSWER-What kingdom are decomposers and chitin? Animalia - ANSWER-What kingdom has no cell walls and eat food? sex/asexual organelles not a circular chromosome - ANSWER-What is found in a eukaryote? asexual no organelles circular chromosome - ANSWER-What is found in a prokaryote? Monera split - ANSWER-What is the potential 6th Kingdom? archaebacteria ...

Bio 121 Exam 2 (Ch. 4)- Dr. Nnadi MONTCO Questions with Correct Answers Which structures partition eukaryotic cells into compartments? - ANSWER-In eukaryotic cells, the membrane that surrounds the nucleus — commonly called the nuclear envelope — partitions this DNA from the cell's protein synthesis machinery, which is located in the cytoplasm. Which structures and/organelles are unique to animal cells? - ANSWER-Animal cells each have a centrosome and lysosomes, whereas plant cells...

BIO 121 Exam 1 Questions with Correct Answers carbon atoms - ANSWER-form up to four covalent bonds single, double, or triple bonds straight, branched, or rings bond with many different elements structural isomers - ANSWER-different covalent arrangements ethanol C2H60 geometric isomers - ANSWER-different spatial arrangements enatiomers - ANSWER-mirror images Polymers - ANSWER-long chains of monomers often linked via condensation reactions Macromolecules - ANSWER-large pol...

Bio 121 Exam 1 Questions with Correct Answers Theory - ANSWER-a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment Discovery science - ANSWER-a scientific methodology which emphasizes analysis of large volumes of experimental data with the goal of finding new patterns or correlations, leading to hypothesis formation and other scientific methodologies Control experiment - AN...

BIO 121 Exam 1 Lecture 5 Purdue Q&A Noncyclic photophosylation - ANSWER-What's the technical term for light reaction of photosynthesis? PSI PSII - ANSWER-What are the two photosystems in photosynthesis? - P680 captures a photon - electrons go to primary acceptor, which is pheophytin - split H2O leave O2 - Cruise down photosystem two and generate more energy - electrons fill electron hole after illumination in P700 to Ferredoxin - cruise down photosystem 1 - reduce NADP oxid...