Ultimate Biology Study Guide - Questions & Answers

a collection of dna fragments of various lengths was subjected to electrophoresis. arrange these dna molecules in order, based on the distance they would travel from the well. the molecule that travels the shortest distance should be at the top of the list, and the molecule that travels the greatest distance should be at the bottom of the list.a. 900 bpb. 2500 bpc. 4200 bpd. 6000 bpe. 8000 bp
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Type the correct answer in the box. use numbers instead of words. the offspring of a black cat and a white cat is a gray cat. it has the genotype bw. b is black and w is white. if a black cat mates with a gray cat, the chance the offspring will be white is _______ percent.
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for a laboratory exercise in class, a student is given a mixture of small pieces of iron, sand, water, and salt. what physical property could be used to best separate the iron from the other ingredients?
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describe which type of morality kenny is displaying when he makes the decision to steal medical supplies for the homeless man. watch both examples of saras reporting decisions and analyze the consequences of each decision. think about what you learned from the team leadership chapter in your text. what benefits came from sara reporting kenny to cathleen? why is it important for sara to not only coach kenny in this situation, but also build her team and develop an effective organizational team structure?
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if you are considered prehypertensive, what are some steps you can take to lower your blood pressure?
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Johanna is explaining to her friend how to determine the climate of an area. Which instruction is she most likely to give her friendA) measure the highest and lowest temperatures in a particular yearB) find the average weather conditions over a period of many yearsC) measure the weather conditions one day and compare them to other days D) record the precipitation and the wind speed for several monthsThank you!
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Some microorganisms cause human disease. Other microorganisms are used in making cheese, yogurt, and bread. Based on this information, the relationship between humans and microorganisms can be
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6.) How is "lock and key" used to describe the action of enzymes? (1 point)Enzymes are able to create gaps in cell walls that allow reactants to enter cells.Enzymes have a shape that specifically fits the reactants, like a key in a lock.Enzymes have a shape that specifically fits the products, like a key in a lock.Enzymes are able to create gaps in cell walls that allow products to leave cells.
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NEED HELP ASAP I WILL GIVE 50 POINTS!!!Which organisms have cells that use mitochondria to release energy stored in food?A: Self feedersB: Neither self feeders nor other feeders'C: Other feedersD: Both
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A hydrophilic peptide hormone is produced in the anterior pituitary gland located at the base of the brain. The hormone targets specific cells in many parts of the body. Which of the following best explains a possible mechanism that would enable the hormone to efficiently reach all of the target cells in the body? * (1 Point) The hormone moves through cytoplasmic connections between cells until it has reached all cells with the correct intracellular binding sites. The hormone interacts with the nerves at the base of the brain and directs signals to the target cells through the nervous system. The hormone is released into the bloodstream where it can be transported to all cells with the correct receptors. The hormone diffuses into target cells adjacent to the anterior pituitary gland where the hormone is degraded. Describe 1 method/way in which you can make a fruit ripen quicker (think of the video on ripening experiment) * (2 points) Enter your answer
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during pregnancy, which hormone is responsible for stimulating maturation of the breast for lactation?
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from the following choices, identify those that are the inputs and outputs of the calvin cycle. drag each item to the appropriate bin. if the item is not an input to or an output from the calvin cycle, drag it to the "not input or output" bin.
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asnwer ASAP RIGHT NOW
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How was the process used to construct the tree of life by Carl Woese different from the process used by Jill Banfield?( plis I need this ASAP, no explanation needed, only the answer)
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Why are spindle fibers important during mitosis?They help separate the chromosomes.They break down the nuclear membrane.They duplicate the DNAThey divide the cell in half.If you have the answers for the whole Unit 8 Modified Biology Exam, I would really appreciate it.
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Carolus Linnaeus developed the classification system that classifies organisms by shared characteristics and evolutionary relationships. Which statement is correct regarding the classification and the relationship of organisms? a.) Organisms belonging to teh same Phylum are more closely related than those belonging to the same Class b.)Organisms belonging to the same Family are more closely related than those belonging to the same genus c.)Organisms belonging to the same Class are more closely related than those belonging to the same Orderd.)Organisms belonging to the same Kingdom are more closely related than those belonging to the same Domain
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28. Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.
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Describe the location of 2 living organisms on a phylogenic tree if they are consideredclosely related.
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We are pretending that tongue-curling in humans is a dominant genetic trait.Suppose a man who is Tt for tongue-curling marries a woman who is also Tt for this trait. What are the possible genotypes and phenotypes of their children, and the percent chance for each?Genotype Phenotype (curl or no curl) Percent Chance (number only)TT 25 25Tt 75 50tt 75 25Word Bank:curl100507525no curl 25 curl 0
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How are molecules moving?
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Besides relative humidity, identify another weather variable of the air in the classroomthat may be determined by using both temperature readings on the hygrometer.
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4. How did the 1991 eruption of Mount Pinatubocontribute to a five-year global cooling?a. by causing a La Nia eventb. by increasing Earth's albedoc. by increasing the rate of evaporation in thesurrounding oceand. by promoting the growth of phytoplankton inthe surrounding oceane. by increasing the concentration of greenhousegases in Earth's atmosphere
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Is the inner core hallow
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Meiotic drive is a phenomenon observed occasionally in which a heterozygous genotype does not produce a 1: 1 proportion of functional gametes, usually because one of the gametic types is not formed or fails to function. Suppose that an allele D shows meiotic drive such that heterozygous Dd genotypes form 3/4 D-bearing and 1/4 d-bearing functional gametes. What is the expected ratio of genotypes in the F2 generation of a monohybrid cross under the assumptions stipulated below? (Hint: Use Punnett squares.)(a) The meiotic drive occurs equally in both sexes.(b) The meiotic drive occurs only in females.
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