What is the maximum magnification of most classroom compound light microscopes? 500x 1,000x 2,500x 5,000x

Answers

Answer 1

Answer:

2,500x

Explanation:

am doing the review rn

Answer 2

Answer:

1,000x

Explanation:

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Related Questions

You have been assigned a DNA stretch. What is the complementary strand when you replicate the template

Answers

Answer:

The complementary strands of a DNA are read in the opposite direction to one another

Explanation:

A DNA strand/stretch can be represented with a number of bases. The bases in a DNA strand are Adenine (A), Thymine (T), Cytosine (C) and Guanine (G). The Adenine can bind to Thymine (and vice-versa) while the Guanine can bind to Cytosine (and vice versa). These bonded bases are called "base pairs".

Complementary DNA strands are read in opposite direction to one another. Each end of a DNA strand is either a 5' end or a 3' end. Hence, if one strand runs from the 5' to 3' end, the complementary strand will run from the 3' to 5'. Thus, they are represented "on paper" the way they run.

For example,

If the DNA strand assigned is AGTCTAG running 5' to 3', the complementary strand will be CTAGACT (starting from the 3' end) and NOT TCAGATC (which starts from the 5' end)

Taxonomists today tend to group organisms into the same category based on similar what?

Answers

Answer:

characteristics

Explanation:

oranisms are grouped based on shared characteristics

Taxonomists today tend to group organisms into the same category based on their evolutionary history and shared ancestry, as explained in Option A, as this allows taxonomists to construct more accurate and detailed phylogenetic trees.

What is taxonomy?

The field of taxonomy is concerned with the classification of living organisms based on their shared characteristics, the aim of taxonomy is to group organisms in a way that reflects their evolutionary history and to provide a standardized system of naming, while earlier taxonomists relied on morphological characteristics, such as the physical appearance of an organism, but modern taxonomists instead use molecular and genetic data to group organisms into categories.

Hence, taxonomists today tend to group organisms into the same category based on their evolutionary histories and shared ancestry, as explained in Option A.

Learn more about the taxonomy here.

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The question is incomplete, complete question is below

Taxonomists today tend to group organisms into the same category based on similar what?

A)based on their evolutionary histories and shared ancestry

B)based on fossils

The lemming is a small mammals with a very high daily energy expenditure for its size. Based on what you learned in the panda case study, what would you predict about the lemming

Answers

Answer is give below

Explanation:

In the panda case study, we know that here lemming is a small mammal with the very high daily energy expenditure for its size so as per this predict about the lemming that there would not be an affect since the human body does not need any fat and the small intestine would not be able to absorb fats.

assuming hardy weinberg equilibrium what is the probability that sarah who is phenotypically normal with no family history and tom

Answers

Answer:

The probability of having a disorder is 50 %.

Explanation:

The offspring has that genetic disorder if the Sarah who is phenotypically normal with no family history and tom has a genetic disorder so there is 50 percent chance that the children of Sarah and tom has that genetic disorder. if the disorder linked with Y chromosome of male so this disorder is present in the sons but if the disorder linked with X chromosome of male so this disorder is present in the daughters.

Two scientists did the same experiment but arrived at different results. The scientists most likely

Answers

Answer:

Two scientists did the same experiment but arrived at different results. The results would most likely provide new testable ideas.

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Answer:

If two scientists did the same experiment but arrived at different results it would most likely provide new testable ideas.

different strains of a virus with a segmented genome can shuffle and combine genes.
true
false​

Answers

Answer:

false

Explanation:

related strains of virus with the signal genome can shuffle and combined genes

What substance heats up the fastest: water, dry sand, wet sand, rock

Answers

Answer:

The specific heat capacity represents the amount of energy, in joules, that it takes to raise the temperature of one gram of a given substance by one degree Celsius. Put more simply, the amount of energy it takes to raise a quantity of water by one degree Celsius would raise an equivalent quantity of sand by a little over 14 degrees. Likewise, sand does not need to lose nearly as much energy as water to produce equivalent cooling. Since it "holds" a lot less energy, it cools down much faster than sand.

Indeed, liquid water has an unusually high specific heat capacity. Because it is much less prone to temperature swings than other common substances, large bodies of water often work to moderate temperatures in a region. This helps to explain, for example, why average temperatures fluctuate very little over the year in San Francisco, a cit

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9. What types of resources are found in the Amazon jungle?

Answers

Answer:

               Metals like bauxite, gold, manganese, copper, tin and timber.

                 

                The Amazon Jungle is rich for logging , coffee growing , meat

               production and milk production.....

A student hypothesized that EC growth might be affected by the DNA from circulating erythrocytes. Is this student’s hypothesis reasonable?

Answers

Answer:

Explanation:

It can be said that this hypothesis is actually not reasonable because circulating erythrocytes do not contain DNA. This can be proven by the Mammalian erythrocytes (rbcs) which ultimately loose their nuclei as well as many other organelles during their maturation process and they don't have nuclei or mitochondria meaning that they are not affected by the DNA.

In the image, the arrow Is pointing to a celestial object. Which attribute disqualifies the object from being a planet?
A. It appears to have no moons.
B. It is spherical in shape.
C. Its neighborhood is not clear.
D. It has horizontal bands on its surface.

Answers

The correct answer is C. Its neighborhood is not clear.

Explanation:

One of the key features of a planet is that it clears its neighborhood; this means the planet gravitational force is strong enough that there are no other celestial bodies on its orbit or next to it except by its moons or satellites. This does not occur in the image presented because there are smaller celestial bodies near to the main or bigger celestial body. This likely occurs if the celestial body is not big enough to clear its neighborhood, and therefore it is not a planet.

Which of the following is true about the speed of light?
O it is a constant when the light is traveling in a vacuum.
O It speeds up or slows down depending on the observer.
O It is slowest in a vacuum.
O lt varies depending on the color of the light.

Answers

Answer:

It is a constant when the light is traveling in a vacuum.

Explanation:

Is zinc renewable or not?

Answers

Answer:  Zinc is  non renewable.

Explanation:

Non-Renewable resources are resources that cannot be replenished easily through natural process. These are the sources which are used in wise manner so that they do not get depleted. For example: coal, petroleum etc.

Renewable resources are resources that can be replenished overtime through natural process.These are the sources which never depletes completely. For example: bio mass energy, solar energy etc.

As zinc cannot be replenished easily through natural process, it is  non renewable.

HEEELLLPPP PLSS!!! Compare and contrast open, closed, and isolated systems. Be sure to discuss the exchange of energy and exchange of matter, and provide at least one example of each.

Answers

Answer:

See the answer below

Explanation:

An open system is a type of thermodynamic system in which energy and matter are being exchanged between the system and the surrounding. It is like boiling soup in an open pot. The opening allows for the addition of materials (matters) into the soup and energy is exchanged through the heating. A good example is found in biological organisms. They consume matters and exchange energy with the environment by carrying out work.

A closed system is a type of system in which there is no exchange of matter between it and the environment. However, there is an exchange of energy. It is like boiling water in a closed pot. Nothing can be added into the pot due to the closure but energy can be transferred through the heating of the pot.

An isolated system allows for neither energy nor matter exchange with the surrounding. It is like a closed food warmer that allows for nothing to enter or leaves it.

Answer: Open systems are energy that can be transferred between the system and its surroundings. Close systems are systems that do not transferred to its surroundings. Isolated systems is a thermodynamic system which cannot exchange either energy or matter from outside its boundaries of the system.

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For this task, you will imagine that you are a reporter for a scientific magazine. Your task is to explain the process of protein synthesis to someone who does NOT have a science background. Therefore, the explanation needs to be in simple enough terms for anyone to understand. You will organize your article in the following way: Structure and Function of DNA and RNA Transcription and RNA processing Translation Protein modification (general) You must also include the following terms: Double helix Helicase Codon Polymerase 5’ cap Poly (A) tail Introns Exons Splicesomes rRNA, tRNA, Mrna Ribosomes Anticodons E site, P site, A site Initiation Elongation Termination

Answers

Answer:

Please find the explanation below

Explanation:

Our nucleus is made up of a genetic material called deoxyribonucleic acid (DNA), which is a double-helical structure that stores the genetic information needed for the optimal functioning of any organism. DNA, alongside RNA are nucleic acids that are composed of NUCLEOTIDES subunits. The nucleotide consists of a pentose sugar (deoxyribose in DNA and ribose in RNA), nitrogenous base and a phosphate group.

However, the genetic information stored in the DNA molecule needs to be expressed in order to form useful products (proteins). This genetic expression is done in two stages viz: transcription and translation. Transcription, which is catalyzed by an enzyme called RNA polymerase is the process whereby the information stored in the DNA is used to synthesize a mRNA molecule. However, this mRNA molecule is considered pre-mature until it is processed. RNA processing occurs in three stages viz: 5' capping, polyadenylation, and splicing.

5' capping involves adding a 5' cap to the marks molecule. Polyadenylation involves adding a poly(A) tail to the mRNA molecule while splicing is the removal of introns (non coding regions) with the aid of Spliceosomes and joining of the exons (coding region). After processing, the mRNA becomes matured and ready to be translated.

Translation is the process whereby the mRNA transcript is used to synthesize a protein molecule. It occurs in the ribosomes (organelles for protein synthesis, a complex of rRNA and proteins) where the mRNA is read in a group of three nucleotides called CODON. The reading is done by the Anticodon of a transfer RNA (tRNA), which is complementary to the codon.

Translation occurs in three stages: initiation, elongation and termination. The mRNA attaches to the P site of the ribosomes (initiation) where it is attached to by a tRNA's anticodon complementary to it. The anticodon carries the amino acid corresponding the codon and shifts to the A-site. The addition of amino acid to the polypeptide chain continues (elongation) until a stop codon is encountered, which signals the end of the translation process i.e. termination. This causes the polypeptide (protein) to be released from the E-site.

The synthesized protein undergoes packaging and modification in the Golgi apparatus.

Have you ever noticed that aside from zoos, you don't see kangaroos, wombats, and koala bears outside of Australia? This is because there is a trench that is a "biogeographical transition zone between Asian and Australian flora and fauna". What is the name of that trench?

Answers

Answer:

Wallace Line

Explanation:

Wallace Line is a boundary line which is a transitional zone between Asia and Australia. This boundary drawn by the British naturalist Alfred Russel Wallace in 1859. This boundary restricts the transferring organisms such as flora and fauna from Australia to Asia. So that's why kangaroos, wombats, and koala bears are only present in Australia not in the continent of Asia.

As part of your research, you examine mRNA expression for the parents, their two unaffected children, and their affected child with a Northern blot using a full-length cDNA probe.Your results, shown here, are as follows:Both parents have low, but detectable, mRNA expression.The unaffected children have either normal or low mRNA expression.The affected child has no detectable mRNA expression. What possible molecular defect could explain these results?Select every legitimate possibility from the choices below.a. The recessive allele could be a premature stop codon that prevents the translation of a full-length protein.b. The recessive allele could be a mutation in the promoter region that prevents RNA polymerase II from binding.c. The recessive allele could be a mutation in the transcribed region that makes the mRNA unstable and causes it to degrade.d. The recessive allele could be a mutation in regulatory DNA that prevents chromatin from being remodeled from a closed to an open state.e. The recessive allele could be a mutation in a splice donor or acceptor sequence that prevents proper mRNA splicing, leaving an intron in the spliced transcript.

Answers

Answer:

b.c d are the answer options

Explanation:

b. The recessive allele could be a mutation in the promoter region that prevents RNA polymerase II from binding.

c. The recessive allele could be a mutation in the transcribed region that makes the mRNA unstable and causes it to degrade.

d. The recessive allele could be a mutation in regulatory DNA that prevents chromatin from being remodeled from a closed to an open state.

in option b, the synthesis of mRNA is going to be halted

in option c, mRNA is undergoing degradation, it will be invisible in the northern blot.

in option d, mRNA in expression of each gene is going to be turned off.

.

In quiet breathing, muscular effort is used mainly in inspiration, and expiration is largely passive, due to elastic recoil of the lung. It results in a pattern change between expiratory and inspiratory flow. Explain changes you observed in the recordings you obtained.

Answers

Answer:

The summary of something like the particular question is demonstrated in the following portion on either the clarity.

Explanation:

Inspiration depends on either the diaphragm contracting, as well as the influence including its external intercostal has been limited throughout normal breathing. Maximum inhalation or even just expiration time depth, as well as rate, are fairly directly proportional to one another because.We may link the whole observation to something like the sequence of expiratory versus inspiratory movement as it takes much longer than either the inspiratory speed throughout our sample since expiration becomes passive yet requires having to return to something like the steady levels.

If a person had not drunk any water for 8 hours before collecting a sample, would you expect his/her urine to have a high or low specific gravity? Why?

Answers

Answer:

The person’s urine will have a high specific gravity

Explanation:

A high specific gravity is characterized by an increased concentration of solutes in the urine of am individual. A low specific gravity is characterized by a low or decreased concentration of the solutes.This is usually due to dehydration as a result of environmental conditions or tedious physical activities.

This explains why a person who had not drank any water for 8 hours and is dehydrated before collecting a sample is thought to have a urine with a high specific gravity

What is the scale of magnetism in marble and granite rocks?

Answers

Answer:

For marble it is 0.9 and granite is 10.4

Explanation:

The magnetic susceptibility of rocks is subjected to the bulk density of crust, bulk chemistry, and mineralogy of the magnetic component.

Metamorphic rock types like the marble has a bulk crust volume of 0.9% while Igneous rock types like the marble has a bulk crust volume of 10.4%

in the krebs cycle,

a. pyruvate is broken down into Co2 molecules
b. glucose is broken down into NADH and CO2
c. Co2 is concerted in pyruvate and O2
d. NADH and CO2 are converted into ATP

Answers

Answer:

a. pyruvate is broken down into Co2 molecules

Explanation:

Krebs cycle is also known as Citric Acid Cycle, in which pyruvate formed during the glycolytic is broken down into Carbon Dioxide (CO2) and Water (H2O).

Each pyruvate molecule is broken down into carbon atom which releases carbon dioxide.

Hence, the correct answer is "a. pyruvate is broken down into Co2 molecules".

1. Research 5 functions of the frontal lobe and explain them in detail with example.
2. Explain what you think might happen if someone damaged frontal lobe. You must mention the functions you have listed

Answers

Answer:

the front  lobes are involved in motor function, problem solving,spontaneity,memory,language,initiation,judgement,impulse control,and social behaviour..

Explanation: particulary, an injury of the frontal lobecould leads to deficits in executive function such as anticipation , goal selection, planning and self correction

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Which scientific questions can be disproved by conducting tests? Select all that apply. Do video games negatively impact mental health? Will my published scientific paper be successful? Can monkeys communicate with each other? Are dogs the most responsible type of pet? Are vegetables good for growing strong bones?

Answers

Answer:

Do video games negatively impact mental health?

Are vegetables good for growing strong bones?

Explanation:

A scientific question is one that can be subjected to experimental verification. Experimentation is then used to obtain valid data which can be used to answer the question.

A good scientific question must contain a dependent and an independent variable. The independent variable is manipulated and its effect on the dependent variable is observed.

In the two options chosen;

Effect of video games on mental health can be observed by conducting a research experiment on people who play video games and those who do not play video games.

Effect of vegetables on strong bones can be studied by conducting a research experiment using people who eat vegetables and those who do not eat vegetables.

what is the first step you would take to solve this equation and why 49n+986=-43​

Answers

Answer:

Subtracting 986 from both sides.

Explanation:

Your goal is to isolate n.

Which of the following correctly describes the process of Translation? I. tRNA anticodon bonds to mRNA codon II. Ribosome bonds to mRNA strand III. Ribosome reaches a STOP codon and detaches from the mRNA IV. Each tRNA adds an Amino Acid to the chain as the Ribosome moves along the mRNA V. Complimentary mRNA strand is made from DNA template

Answers

Ribosome bonds to mRNA, a tRNA anticodon bonds to mRNA codon, tRNA add an Amino Acid and ribosome detaches from the mRNA describe translation (II, I, IV and III).

What is translation?

The translation is the cellular process by which cells can produce proteins by using the genetic code.

The translation involves the use of an mRNA sequence which contains codons that serve to add amino acids to the polypeptide chain in the ribosome.

In conclusion, the steps II, I, IV and III describe translation.

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A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern?

Answers

A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern?

B. Xylem

as it contribute for most of a tree's growth in diameter.

A class is debating pros and cons of using sea walls to reduce beach erosion. What is the best way for them inform their
decision-making?

They should each write an opinion paragraph to send to the local paper.

They should hold the debate on stage, so that they can be judged.

They should watch movies about beaches.

They should research wave action and collect data about erosion in the area.

Answers

Answer:

They should research wave action and collect data about erosion in the area.

Explanation:

everyone has their own opinion, and movies aren't gonna make the cut, and no one wants to see a debate in school, so they should research first to get the info they need

Intrinsic factor A. increases gastric motility. B. causes the release of stomach acid. C. facilitates the absorption of vitamin B12. D. protects the stomach lining from the effects of stomach acid. E. stimulates the synthesis of DNA.

Answers

Answer:

C. facilitates the absorption of vitamin B12.

Explanation:

The Intrinsic factor is a substance that is produced by the stomach and it has the important function of producing vitamin B12 which is necessary for life. Vitamin B12 is used in the production of mature red blood cells. It also improves the function of the nervous system. The production of this intrinsic factor is a very vital role of the stomach because, in the absence of a stomach, for example, in the case of a gastrectomy, a person can only survive if he is given injections of Vitamin B12.

The stomach also serves as a holding center for food and eventually delivers the food to the small intestine and the duodenum.  


Identify the organelle where photosynthesis takes place.

B

C

D

E

Answers

Answer:

E

Explanation:

If E is the Chloroplasts, where photosynthesis takes place, then the answer is E.

Answer:

E

Explanation:

Which of the following is an example of a non-mendelian pattern of inheritance? A) all traits are inherited through patterns found by Mendel. B) when individuals with the genotype BB cross, all the offspring have brown fur. C) when pea plants that are hetero-zygous for a certain trait cross some of the offspring express both distinct versions of the trait. D) when horses that are homo-zygous for red hair are crossed with horses that are homo-zygous for white hair, the offspring have both red and white hair.

Answers

The correct answer is B

In angiosperms, what is the name of the outer epidermal layer that protects the plant body?

Answers

Answer:

cuticle

Explanation:

The answer is cuticle
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Who is the narrator of this story in two kinds There are 9 classes of 25 students each, 4 teachers, and two times as many chaperones as teachers.Each bus holds a total of 45 people.What is the least number of buses needed for the field trip? Which is incorrect descriptions of the genetic event initiated by the HIV reverse transcriptase (RT) upon the HIV infection? a. RT catalyzes initial synthesis of ssDNA using viral genomic RNA as the template. b. The first RNA template is degraded after ssDNA synthesis. c. The whole process is completed after synthesis of dsDNA. d. tRNAs are adopted as the first primers. e. None of these Firms that tend to focus on conducting e-business with other businesses are referred to as having a B2B model.A. TrueB. False You have learned at work that todays successful companies at all levels have one thing in common: they are heavily committed to marketing and strongly ________. A researcher was interested in whether a new sports drink could change people's running endurance. For one week, 6 participants continued with their normal routine and then their endurance was measured. The following week, the same participants were instructed to drink the new sports drink an hour before their endurance was measured. Below are your data. Week I 90 100 110 110 85 95 Week 2 100 110 110 120 95 95 What type of analysis would be used on the above data? a. Z-test b. One sample t-test c. Independent samples t-test d. Dependent samples t-test A pharmaceutical company is making a large volume of nitrous oxide (NO). They predict they will be able to make a maximum amount of 4860 grams with the materials they have in stock. From the previous 10 volumes they have made, they know that the percent yield of this reaction is fairly low at 47%. How much will the actual yield be? A. 228 grams B. 2284 grams C. 10340 grams D. 486 grams Assume that three identical units are purchased separately on the following three dates and at the respective costs:________. June 1 at $10 June 2 at $15 July 4 at $20 The company sells two units during the period. Conclude which inventory items are sold first and which unit remains in ending inventory if the company is using the LIFO perpetual cost flow assumption. which category would a person who has an IQ of 84 belong ? Kashi Sales, L.L.C., produces healthy, whole-grain foods such as breakfast cereals, frozen dinners, and granola bars. Assume payroll for the month of January was $350,000 and the following withholdings, fringe benefits, and payroll taxes apply:_________. Federal and state income tax withheld $ 120,000 Health insurance premiums (Blue Cross) paid by employer 11,500 Contribution to retirement plan (Fidelity) paid by employer 45,000 FICA tax rate (Social Security and Medicare) 7.65 % Federal and state unemployment tax rate 6.20 % Assume that Kashi has paid none of the withholdings or payroll taxes by the end of January (record them as payables), and no employees cumulative wages exceed the relevant wage bases. Required: 1. Record the employee salary expense, withholdings, and salaries payable. 2. Record the employer-provided fringe benefits. 3. Record the employer payroll taxes. The sum of 6 consecutive integers is 519. What is the third number in this sequence? Bob has taken out a loan of $15,000 for a term of 48 months (4 years) at an interest rate of 6.5%. Using the amortization table provided, what will be his total financecharge over the course of his loan?Monthly Payment per $1,000 of PrincipalRate 1 Year 2 Years 3 Years 4 Years 5 Years6.5% $86.30 $44.55 $30.65 $23.71 $19.577.0% $86.53 $44.77$30.88$23.95$19.807.5% $86.76 $45.00$31.11$24.18$20.048.0% $86.99 $45.23$31.34$24.41$20.288.5% $87.22 $45.46$24.65$24.65$20.529.0% $87.45 $45.68$31.80$24.89$20.76A.$355.65OB.$975.00C.$1,682.40D.$2,071.20E. $17,071.20ResetNext 2020 Edmentum. All rights reserved. Write the slope-intercept form of the equation for the line. (-1,-3) (1,1) I would like to have some help please! thank youu I need help on the 2 question that is "write three expressions containing exponentz so that each expression equals 81." Which is an infinite arithmetic sequence? a{10, 30, 90, 270, } b{100, 200, 300, 400} c{150, 300, 450, 600, } d{1, 2, 4, 8} Determine which one of the following statements is true. A. Exponential growth will always exceed linear growth. B. Linear growth will always exceed quadratic growth. C. Linear growth will always exceed exponential growth. D. Quadratic growth will always exceed exponential growth. How many dozen (dz) eggs are needed to make 12 muffins? What about 15.5muffins? (hint cross out units first) * At a baby shower, 15 guests are in attendance and 4 of them are randomly selected to receive a door prize. If all 4 prizes are identical, in how many ways can the prizes be awarded? Compared with the other countries in South America, Argentina . A) has the highest per capita GNP B) has the lowest per capita income C) has the highest percentage of mestizos D) has not had military dictatorships What is the shape of the following molecule? AIF_3