BIOLOGY COLLEGE

Please select the word from the list that best fits the definitionGrouping items together to keep observations organized


inferring


predicting


classifying


observing

Answers

Answer 1
Answer:

The answer is classifying.

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Definition: Arranging (a group of people or things) in classes or categories according to shared qualities or characteristics.

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You have a mixture of three proteins X, Y, and Z.a. X is positively charged, has a mass of 100 kDa, it binds sugars.b. Y is positively charged, has a mass of 200 kDa, it does not bind sugars.c. Z is negatively charged, has a mass of 100 kDa, it does not bind sugars.What will be the most efficient method to purify protein X from the mixture of X, Y, and Z?i. washingii. dryingiii. ion-exchange chromatographyiv. gel filtration chromatographyv. affinity chromatography
Within a narrow range of temperatures, S. marcescens produces a red pigment called prodigiosin. Although the ultimate purpose of the pigment is a mystery, it is known that at least 10 enzymes are required for its production. If one of these enzymes is rendered nonfunctional, how would you expect the appearance of the bacteria to change?
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Which of the following statements about tRNA is FALSE? A. tRNAs of both eukaryotes and prokaryotes share common features. B. The two-dimensional structure of tRNAs exhibits a cloverleaf pattern. C. tRNAs are produced in the nucleus. D. functional tRNAs have been spliced by splicesomes. E. tRNAs possess an anticodon complementary to the codon.

Which of the following identifies the process shown at point Z?

Answers

According to the diagram, it identified the process shown at point Z should be considered as the Translation.

What is Translation?

In terms of molecular biology and genetics, translation refer to the process where  ribosomes in the cytoplasm should synthesize the proteins after considering the process of transcription of DNA to RNA with respect to the cell's nucleus.

Therefore, According to the diagram, it identified the process shown at point Z should be considered as the Translation.

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Answer: Translation

Explanation: Transcription is converting DNA to mRNA.  They're both made of  nucleotides, so you're just transcribing the information from one form to the other.  Translation is turning mRNA to protein, so you're translating the information from one language to another.

The arterioles (small arteries) leading to an organ, constrict in order to decrease flow to the organ. To shut down an organ, blood flow is reduced naturally to 2.80% of its original value. By what factor did the radii of the arterioles constrict? Penguins do this when they stand on ice to reduce the blood flow to their feet.

Answers

The final radii of the arteriole is reduced by the factor of 0.409 after the constriction of the arteriole.

The flow rate is defined as the amount of fluid flow through the artery in the given time period at the cross-sectional area.

Computation for the radii of constricted arterioles

The flow rate for the artery is given by:

Q_1=(\pi Pr^4)/(8\eta l)

Where, P is the pressure, r is the radius, \eta is the viscosity, and l is the length.

The value of flow rate is reduced to 2.80 % of its natural values. The reduced flow rate is given as:

Q_2=Q_1\;*\;(2.80)/(100) \nQ_2=0.028Q_1

The ratio of the flow rate is given as:

(Q_2)/(Q_1) =(r_f^4)/(r_i^4)\n\n (0.028\;Q_1)/(Q_1) =(r_f^4)/(r_i^4)\n\n0.028\;r_f^4=r_i^4\n\nr_i=0.409r_f

The final radii of the arteriole is reduced by the factor of 0.409 after the constriction of the arteriole.

Learn more about flow rate, here:

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Answer:

The main factor that causes vasoconstriction is the high concentration calcium inside muscle cells.

Explanation:

When the vessels suffer vasoconstriction, the blood supply is decreased and in this way the heat of the body is maintained. The way this happens is because the blood can no longer reach the surface and therefore decreases outward heat radiation.  The main factor that causes vasoconstriction is the high concentration calcium inside muscle cells. There are several factors that cause vasoconstriction, internal or external. Environment is one of the external factors, and what happens to the penguins' feet is an example for it, since they are trying to preserve body heat to survive.

In humans alkaptonuria is a metabolic disorder in whichaffected persons produce black urine. Alkapotonuria results from anallele(a) that is recessive to the allele for normal metabolism(A). Sally has a normal metabolism, but her brother hasalcaptonuria. Sally's father has alcoptonuria, and her mother hasnormal metabolism. a) Give the genotype of Sally,her mother,father and herbrother.
b) If Sally's parents have another child what is theprobabilty that this child will have alkaptonuria?
c) If Sally marries a man with alkaptonuria, what is theprobability that their child will have alkaptonuria?

Answers

If Sally marries a man with alkaptonuria, there is a 50% chance that  their child will have alkaptonuria.

The genotype of an individual refers to the sum total of genes that the individual received from its parents. Since Sally has a normal metabolism, Sally is Aa. Sally's mother is Aa while Sally's father and brother are aa.

If Sally parents have another child, using the Punnet square method, there is a 50% chance that the child will have alkaptonuria. If Sally marries a man with alkaptonuria, there is a 50% chance that  their child will have alkaptonuria.

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a) Genotypes: : Aa (carrier of the alkaptonuria allele) ,Mother: Aa (carrier of the alkaptonuria allele)Father: aa (has alkaptonuria)Brother: aa (has alkaptonuria)

b) If Sally's parents have another child:The probability of the child having alkaptonuria (aa genotype) is 25%.The probability of the child being a carrier (Aa genotype) is 50%.The probability of the child having normal metabolism (AA genotype) is 25%.

c) If Sally marries a man with alkaptonuria (aa genotype):The probability of their child having alkaptonuria (aa genotype) is 50% (as Sally is a carrier).The probability of the child being a carrier (Aa genotype) is 50%.

The probability of the child having normal metabolism (AA genotype) is 0% (as the husband has alkaptonuria).

Sally: Aa (normal metabolism carrier)

Mother: Aa (normal metabolism carrier)

Father: aa (alkaptonuria)

Brother: aa (alkaptonuria)

b) If Sally's parents have another child:

Probability of the child having alkaptonuria (aa genotype) is 25%.

Probability of the child being a carrier (Aa genotype) is 50%.

Probability of the child having normal metabolism (AA genotype) is 25%.

c) If Sally marries a man with alkaptonuria (aa genotype):

Probability of their child having alkaptonuria (aa genotype) is 50% (as Sally is a carrier).

Probability of the child being a carrier (Aa genotype) is 50%.

Probability of the child having normal metabolism (AA genotype) is 0% (as the husband has alkaptonuria).

For such a more question on Genotypes

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Crossing over would most likely occur during which stage of the cell cycle?when DNA is being replicated

when homologous chromosomes line up in pairs

when centromeres are separated

when cytokinesis begins

Answers

Answer:

When homologous chromosomes line up in pairs.

What determines the physical and chemical properties of a mineral?

Answers

Answer: Determines the properties of a mineral by the composition and structure .In such as: : colour, taste, tenacity, magnetism, fracture, streak, specific gravity, [ amount of transparency and crystalline structure.

3. How many times can the nuclear DNA replicate during the life cycle of a cell? *Always

Only once

Twice

Many times

Answers

Only once because the DNA replication initiation is tightly linked to cell cycle progression,ensuring that replication occur only once per cycle
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