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:

i got yall


Related Questions

a mother has heterozygous type a blood and the father has type ab blood. what is the probability of the offspring having type O blood

Answers

Answer:

None

Explanation:

This is because A and B are dominant over O. Hence the overshadow the O group in the phenotype.

Explain what, if any, is the issue facing DNA polymerase in regards to its 5’->3’ activity when replicating DNA.

Answers

Answer:

The two strands of DNA are replicated in different ways

Explanation:

DNA replication is a process that occurs during the S phase of the cell cycle that consists of making two identical copies of the double-stranded DNA molecule, which subsequently are distributed in the daughter cells during cell division. During this process, DNA polymerase can add nucleotides in 5' to 3' direction, but not in 3' to 5' direction. In consequence, the DNA strand that has 3’ to 5’ directionality can be synthesized directly, while the DNA template strand that has 5’ to 3’ directionality can't be synthesized in a continuous manner and thereby it is created by adding small DNA fragments, which are known as Okazaki fragments (150-200 nucleotides in size).

If you insert a gene from bacteria into a mouse genome, then which terms best explains what you just made?

Answers

Answer:

a transgenic animal

Explanation:

Which philosopher believed that the soul operated on three levels: reason, will, and desire? A. Socrates B. Plato C. John Locke D. Hippocrates Please select the best answer from the choices provided A B C D

Answers

Answer:

B. Plato

Plato was known as a renowned philosopher in Athens, Greece. He believed that the soul operated on three levels which include Reason, Will and Desire.

Plato was of the notion that the soul was tripartite as a result of it having three levels of operation. He also believed that the soul can never die and will still be in operation and thought even after a person dies.

Answer:

Which philosopher believed that the soul operated on three levels: reason, will, and desire?

A. Socrates

B. Plato

C. John Locke

D. Hippocrates

A purebred tall pea plant is cross-pollinated with a tall, heterozygous pea plant. Use a Punnett square to determine the probability the offspring inherita
recessive short allele. (I point)
75%
25%
0%
50%

Answers

Answer:

50%

Explanation:

because if you use the box method you see that half receive a short alele.

T     t  

T TT  Tt

T TT   Tt

One of the most common causes of acute tubular necrosis (ATN) is:________.
a. ischemic conditions.
b. cytotoxic agents.
c. immune reaction.
d. prolonged postrenal kidney injury.

Answers

Answer:

a. ischemic conditions.

Explanation:

Hello,

In this case, considering that acute tubular necrosis (ATN) has been widely acknowledged as a harmful medical condition showing off the death of tubular epithelial cells that give the form to the renal tubules of the kidneys; it presents with acute kidney injury. Thus, common causes of ATN include low blood pressure and use of nephrotoxic drugs which is more technically known as a. ischemic conditions in which the blood flow is very weak.

Regards.

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

Which of the following is a testable scientific question

Answers

Where are the questions so i can answer them?

Answer: Just took the test: Its "How does the age of city affect the number of trees in the city? "

Provide one example of quantitative data that can be collected when using a microscope?

Answers

Answer: there 3 ducks by the pond

Explanation:

Quantitative is numbers. how many.

C. If you combined the elements in the product of this reaction, what type of

reaction would it be? Hint: What is the reverse of the equation you just

balanced? (1 point)

Answers

Answer:

Reversible reaction

Explanation:

If the elements of the product combine together in a chemical reaction, this reaction is called reversible reaction because the reaction moves in backward  or reverse direction. For example, if acid i. e. HCl combine with base i. e. NaOH which are the reactants, it produces two products salt (NaCl) and water (H2O). If salt (NaCl) and water (H2O) combine again with each other, it produces acid i. e. HCl and base i. e. NaOH, such type of reaction is called reversible reaction.

Why photosynthesis can't take place in such an environment , where there is no oxygen..? And exactly why trees need oxygen for photosynthesis ?

Answers

Answer:

Photosynthesis is a chemical process that leads to the release of oxygen as a by-product and is necessary for cellular respiration  

Explanation:

The plants produce or make oxygen form the wastes of starch, sunlight carbon dioxide, and water. In order to burn the sugar that is stored in the plants, it needs to have sunlight which requires oxygen. As the break down of sugar C6 H12 O6 to CO2 and H2O needs O2 to do it. Which is called cellular respiration. This is also stated by the first law of thermodynamics that energy cannot be created and neither destroyed but transforms itself. Photosynthesis is the chemical process that is used to convert this chemical energy which makes carbon and water into glucose and oxygen is released as a by-product.

When you touch an object that is very hot you quickly pull your hand back.
What is the correct pathway of nerve impulses for this behavior?

Answers

Answer:

this is called reflect action

Answer:

reflex action

Explanation:

this is because, it makes it possible to swiftly pull back your hand if you accidentally touch a hot pan

fur color in mice is affected by a single gene the gene for fur color has two alleles: b that causes dark brown fur and b that causes light brown fur. What is or could be the genotyes of a mouse with dark brown fur

Answers

Answer:

(BB) or (Bb)

Explanation:

Given that (B) allele , is responsible for fur that is dark brown, and (b) allele is responsible for fur color that is light brown, the dominant allele is (B) allele for dark brown fur. Dark brown fur allele would always express itself over the recessive allele, (b).

For a mouse that has dark brown fur, the possible genotype it could have is either (BB) => 2 dominant allele, or (Bb) => 1 dominant allele and a recessive allele. The dominant allele would always express itself even in the presence of the recessive allele.

Two students are comparing scientific experiments to investigations. They came up with the following ideas. Student A: Testing plant growth in different types of soils Student B: Comparing the water level in a lake during different times of the year Which student gave an example of a scientific experiment? Student A because it requires experimental and control groups Student B because it requires a hypothesis Student A because it is preferably done in natural settings Student B because it is preferably done across a long period of time

Answers

Answer:

Student A because it requires experimental and control groups

Explanation:

Answer:

i took the test, its A

Student A because it requires experimental and control groups

Explanation:

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?
A) The repressor will no longer bind to the operator.
B) The repressor will no longer bind to the inducer.
C) The lac operon will be expressed continuously.
D) The lac operon will function normally.

Answers

Answer:

D) The lac operon will function normally.

Explanation:

The promoter area can be described as the area that causes the transcription to initiate for a particular gene. Promoters may be near the genes from which they initiate transcription or they may display multiple scenes upstream. The lock operon works normally because the promoter area can still enable transcription on many base pairs. Detects repression promoter and works normally.so correct option is D) The lac operon will function normally.

If a researcher moved the repressor gene of lac I, along with its promoter; the lac operon will function normally. Option D is correct.

Promotor:

It is the genetic sequence that is recognized by the RNA polymerase to start the transcription.

Here, researcher moved the repressor gene of lac I , along with its promoter.

Therefore, transcription starts, it will express the repressor gene also because repressor gene was moved with promotor.

To know more about Lac operon,

https://brainly.com/question/4109690

an advertisement on tv claims children grow faster with the use of vitamin gro. vitamin gro is a 25mg pill taken twice a day. the viewer has little knowledge about how children grow, but he knows that children need a complete diet and a good exercise routine. he decided to put the commercial to the test. the viewer uses his 6 nieces who are the same age to conduct the experiments. to make the experiment easier he uses his six nieces using labels such as child 1, child 2 and so on. he records their height every 3 days for 7 days. What are the variables?

Answers

Answer:

Independent variable - vitamin gro and exercise routine.

Dependent variable - growth of children or nieces.

Explanation:

There are two variables present in an experiment called dependent and independent variables.

Independent variables are those variables which can be controlled in an experiment and dependent variables are those variables which are measured in the experiment under the influence of the independent variable.

In the given experiment, the independent variable will be vitamin gro and exercise routine and the dependent variable is the growth of children or nieces because vitamin gro and exercise routine can be controlled and growth of children is dependent on vitamin gro and exercise routine.

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.

The relative value of grains for animals is determined primarily by metabolizable energy and crude protein content. From the information below, which grain is the best choice for feeding swine?Grain Crude Protein Metabolizable Energy $ Per TonBarley 13.00% 3.000 kcal/kg 170Corn 10.00% 3.600 kcal/kg 160Grain sorghum 12.00% 3,200 kcal/kg 140Wheat 14.00% 3,400 kcal/kg 180

Answers

Answer:

Corn

Explanation:

Good news for corn and soybean hog growers because these two grains are the main ingredients in pork diet and these feedstuffs should be affordable.   According to metabolism, corn has the highest metabolic energy, i.e. 3600 k.cal/kg                Therefore, corn is the best food for swin  so, the correct answer is corn.  

It works because your brain creates images from dots. That’s how you can watch shows that you like a whole lot.

Answers

Answer:

The fovea works because your brain creates images from points.

Explanation:

The fovea is located in the center of the eye's retina. It is the structure capable of capturing stitches from what you are viewing and sending those stitches to the brain, which will "stitch" all stitches together and form an image. In summary, the fovea is able to project an image to the brain through pieces of the image, it is formed by cones that allow the transmission of light to the photoreceptors of the eyes.

The fovea works since your brain makes pictures from points.

Brain

The fovea is found within the center of the eye's retina.

It is the structure able of capturing stitches from what you're seeing and sending those fastens to the brain, which can "fasten" all fastens together and frame an picture.

The fovea is able to venture an picture to the brain through pieces of the picture, it is shaped by cones that permit the transmission of light to the photoreceptors of the eyes.

Learn more about "Brain":

https://brainly.com/question/5361122?referrer=searchResults

Which of the following can a chemical bond do?
A. Change element properties
B. Store energy
OC. All of these
D. Release energy

Answers

Answer: C

Explanation:

The following can a chemical bond do is all of these. The correct option is C. All of these.

What is a chemical bond?

A chemical bond is a bond formed between two elements. The energy of the reaction is stored in the bonds when the reaction happens, the energy is released from the bonds. It also changes the chemical properties of the elements.

Thus, the correct option is C. All of these.

Learn more about chemical bond

https://brainly.com/question/26176140

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which of the following would differ if you compared the same reaction taking place with and without an enzyme

a. the chemical energy of the reactants
b. the chemical change of the product
c. the energy required to the reaction

Answers

Answer:

The correct answer is - option C.

Explanation:

Chemical energy is the energy that every substance or chemical have and its not affected by the presence or absence of the enzyme, while the activation energy is the required energy to initiate for a chemical reaction. If the energy of the chemical reaction is less than the activation energy reaction will not take place.

Presence of a enzyme lowers the amount of the energy for the initiating the reaction which is activation energy and the chemical reaction takes place.

Thus, the correct answer is - option C.

Where does that air go as a result?

Answers

Answer:

Air go from one place to another due to difference in temperature of land and sea.

Explanation:

Air go as a result of wind from one place to another. Air moves from land to sea is called land breeze and from sea to land is known as sea breeze. This will occur when there is difference in temperature between sea and land. Sea breeze occurs at afternoon while land breeze occurs at night till morning. Warm air produces low pressure and cold air produces high pressure so when warm air rises, cold air takes its place and this cycle continues.

Predict what will happen to the following lung volumes and capacities during strenuous exercise. Assume that you are comparing from a baseline of normal resting respiration.


Lung Volume or Capacity Predicted change from resting baseline : Use Increase, Decrease or No Change

TLC (total lung capacity)
No change
VC (Vital capacity)
IC (Inspiratory capacity)
FRC (Functional residual capacity
TV (Tidal volume)
IRV (Inspiratory reserve volume)
ERV (Expiratory reserve volume)
RV (Residual volume)

Answers

Answer:

During intense exercise:

lung capacity increases

vital capacity increases

respiratory capacity increases

functional residual capacity increases

tidal volume increases

the inspiratory and expiratory reserve volumes decrease as does the residual volume.

Explanation:

Residual volumes decrease because having better lung capacity, better development of the secondary skeletal muscles that collaborate in expiration and inspiration, these are given in a better way, and more effectively.

If these processes take place more efficiently, their potentiality increases and expiration and inspiration move a large current of air into the lungs, thus leaving less reserve airs.

Those people who have increased exhalation or inspiration reserve, have a weak activity of the musculature in the processes and function as "stagnant air" which is synonymous with a lack of physical activity or aerobic capacity.

It is important to clarify that all the above processes are accompanied by an increase in the size of the chest cage

Which of the following correctly describes the order of events occurring during a sympathetic nervous system response?

Answers

Answer:

Stimulation of thoracic or lumbar spinal regions; impulse reaches chain ganglion; acetylcholine release

Explanation:

Acidification of the stomach uses all of the following types of transport EXCEPT: A. channels. B. pumps. C. antiporters. AND. symporters. E. All of these are used by parietal cells.

Answers

Answer: Option E.

All of these are used by parietal cells.

Explanation:

Parietal cells are found in the stomach and they produced gastric acid(Hcl)..

HCl is produced when water mixed with carbondioxide in the parietal cell to produced carbonic acid which is catalyses by carbonic anhydrase. The carbonic acid then dissociates into hydrogen ion and carbonate ion.

Parietal cell produce HCl due to histamine (via H2 receptors), acetylcholine (M3 receptors) and gastrin (gastrin receptors).

Therefore it uses channels, pumps, antiporter.

The most abundant element in the body of living things is: a) Hydrogen b) Nitrogen c) Carbon d) Oxygen​

Answers

Answer:

D. Oxygen

Explanation:

Oxygen is the most abundant element in the bodies of living things. For example, oxygen is about 65% of the human body.

Oxygen in the body is mostly in the form of water, since the bodies of living things need water to create energy needed every day.

Alexei Romanov suffered from hemophilia, a condition that (1 point)
causes the body to produce too many blood cells due to the body's inability to form fibrin proteins.
o prevents blood from clotting normally due to the body's inability to form fibrin proteins.
O causes the body to produce abnormally shaped red blood cells due to the body's inability to form fibrin proteins.
o prevents the body from absorbing vitamin B12 due to the body's inability to form fibrin proteins.

Answers

Answer:

prevents blood from clotting normally due to the body's inability to form fibrin proteins.

Explanation:

Haemophilia is a genetic disorder which could be inherited and it is characterized by constant bleeding and loss of blood when injuries occur. This is as a result of the inability of the body to form fibril proteins. The fibril proteins are responsible for the production of platelets . The platelets are responsible for the clotting of blood.

This validates haemophilia being a disorder which prevent blood from clotting normally due to the body's inability to form fibrin proteins.

For those who need more answers

1. Adenine

2. Prevents blood from clotting normally due to the bodys inability to form fibrin proteins

3. TCA

4. DNA has the sugars deoxyribose, while RNA has the sugar ribose

5. tRNA carries amino acids to the ribosome and helps form proteins

In the quest to understand the basis of infertility in humans, researchers have identified a mutation in a gene associated with chiasmata. This protein normally acts to promote homologous recombination.Why might a defect in homologous recombination have consequences for fertility?A. The chiasmata halts the whole process of meiosis, if crossover do not form properly.B. Crossover formation is a necessary step in meiosis I to ensure proper chromosome segregationC. A checkpoint requires a certain level of genetic variability for meiosis to proceed.D. Chiasmata are the connections between the centromeres and the centromeres that pull them to each pole of the daughter cells.

Answers

Answer:

B. Crossover formation is a necessary step in meiosis I to ensure proper chromosome segregation

Explanation:

Crossing-over is a unique phenomenon that occurs in the prophase I stage of meiosis I, where non-sister chromatids of homologous chromosomes exchange their chromosomal segment. The physical point where this exchange occurs is called CHIASMATA. Hence, a mutation that affects the gene associated with the chiasmata will affect the occurrence of crossing over or homologous recombination.

Crossing-over, through the formation of the chiasmata, is responsible for the physical alignment and proper segregation of chromosomes into gametes. Naturally, the chiasmata formed as a result of recombination during meiosis helps ensure that the chromosomes stay together until it is the right time to separate. This way, any chromosomal defect in the resulting gamete is prevented.

However, an error or defect in homologous recombination might give rise to gametes with chromosomal disorder, a condition known as ANEUPLOIDY i.e. missing or additional chromosomes in gametes. This can affect the fertility of the involved human.

After the centromeres separate during mitosis, the chromatids, now called _______, move toward opposite poles of the spindle.

Answers

Answer:

Daughter chromosomes

Explanation:

Hormones perform important functions within the reproductive system. During puberty, secondary sex characteristics develop. Which hormone is responsible for the development of these characteristics in the female?

Answers

Answer:

estrogen

Explanation:

it helps in regrowth of endometrial regrowth ovulation and calcium absorption and is also responsible for breast development

Hii!! The correct answer is A. estrogen. (:

Other Questions
A bag contains three red marbles, two green ones, one lavender one, two yellows, and two orange marbles. HINT [See Example 7.] How many sets of seven marbles include at least one yellow one but no green ones any 3 communicable diseases,its symptoms,prevention and source. In the direction perpendicular to the drift velocity, there is a magnetic force on the electrons that must be cancelled out by an electric force. What is the magnitude of the electric field that produces this force Nan lives 13 miles from the airport. Felipe lives 6 miles from the airport.How many more miles does Nan live from the airport than Felipe? Mai is putting money into a checking account.Let Y represent the total amount of money in the account (dollars)Let X represent the number of weeks Mai has been adding money suppose that x and y are related by the equation 550+40x =y what is the change per week in the amount of money in the account ? Given the following data: Average operating assets $ 504,000 Total liabilities $ 23,520 Sales $ 168,000 Contribution margin $ 85,680 Net operating income $ 45,360 Return on investment (ROI) is: generate a continuous and differentiable function f(x) with the following properties: f(x) is decreasing at x=5 f(x) has a local minimum at x=3 f(x) has a local maximum at x=3 Suppose that you have an old car that is a real gas guzzler. It is 10 years old and could be sold to a local dealer for $ cash. The annual maintenance costs will average $ per year into the foreseeable future, and the car averages only miles per gallon. Gasoline costs $ per gallon, and you drive miles per year. You now have an opportunity to replace the old car with a better one that costs $. If you buy it, you will pay cash. Because of a 2-year warranty, the maintenance costs are expected to be negligible. This car averages miles per gallon. Should you keep the old car or replace it? Utilize a 2-year comparison period and assume that the new car can be sold for $ at the end of year 2. Assume that the salvage value of the old car at the end of year 2 will be $0. Ignore the effect of income taxes and let your MARR be %. Escoge la mejor traduccin para la siguiente oracin. They have written a long letter. A. Han escribo una carta larga B. Han escribito una carta larga. C. Han escribido una carta larga. D. Han escrito una carta larga. betty's bakery calculates the total price d in dollars for c cupcakes using the equation d=2c. What does 2 mean in this situation? 8. Define mummifcation? 10. (01.02)Given the function f(x)3x - 45which of the below expressions is correct? (1 point)5x+4f-1(x) =3f-1(x)5x - 43O f-'(x)-344-3x 4543xf-1(x) =5 Jacobs age is two years more than the sum of the ages of his siblings Becky and Micah. Which equation represents Jacobs age? A. z = x + y 2; x represents Micah's age, y represents Becky's age, and z represents Jacob's age B. x = y + z + 2; x represents Jacob's age, y represents Micah's age, and z represents Becky's age C. x = 2 + y + z; x represents Becky's age, y represents Jacob's age, and z represents Micah's age D. y = x + z 2; x represents Jacob's age, y represents Becky's age, and z represents Micah's age Choose the correct alternative that answer this question : When do we celebrate Father's Day in Brazil? And in the USA?________________________ * 1 ponto Third Saturday in June Third Sunday in June. d)Third Saturday in July - Third Sunday in June c)Second Sunday in August Third Sunday in June. b)Second Saturday In June Third Saturday in June. To find the pH of a solution of NH4Br directly, one would need to use:__________Select the correct answer below:a) the Kb of NH3 to find the hydroxide concentrationb) the Ka of NH+4 to find the hydronium concentrationc) the Kb of NH3 to find the hydronium concentrationd) the Ka of NH+4 to find the hydroxide concentration If you transform x2 + y2 = 25 into 4x2 + 4y2 = 25, which option below describes the effect of this transformation on the radius? A. It multiplies the radius by 2. B.It multiplies the radius by 4. C.It divides the radius by 4. D.It divides the radius by 2. A project that provides annual cash flows of $2,700 for nine years costs $8,800 today.Requirement 1:A. At a required return of 9 percent, what is the NPV of the project?B. At a required return of 28 percent, what is the NPV of the project?C. At what discount rate would you be indifferent between accepting the project and rejecting it? Two identical planets orbit a star in concentric circular orbits in the star's equatorial plane. Of the two, the planet that is farther from the star must have Evaluate S_5 for 600 + 300 + 150 + and select the correct answer below. A. 1,162.5 B. 581.25 C. 37.5 D. 18,600 A researcher would like to test the claim that the mean lung capacity of middle-aged smokers is less than the mean lung capacity of senior citizen nonsmokers. Independent random samples of 34 middle-aged smokers and 34 senior citizen nonsmokers will be used in a hypothesis test of this claim, and it is believed that the standard deviations of the lung capacities in the populations of middle-aged smokers and senior citizen nonsmokers are the same. Which test statistic formula should be used for this test