Research and produce a summary about the history of the microscope.

Answers

Answer 1
Microscopes have been used for centuries in order to see specimen scientists cannot see with their unaided eye. Antón VanLeeonhoeuk is given credit for designing the first lenses for microscopes in the 16th century. He looked at “animacules” which we would now call bacteria and protists. Robert Hooke first coined the term cell, as he looked at cork and thought it looked like cells that monks slept in. Improvements were made in the following centuries, and Ernest Leintz in the 1800s creates a way to have differing magnification lenses on one microscope. Continuing into the 1900s and 2000s there are now electron scanning microscopes, ultraviolet microscopes, atomic force microscopes, and electron tunneling microscopes—all which allow scientists to have better resolution and to see smaller and smaller things. Microscope technology will continue to improve as scientists discover more ways to magnify the microscopic world.

Related Questions

a skeletal muscle generates the greatest tension when it is:

Answers

Explanation:

A skeletal muscle generates the greatest tension when it is: partially stretched before being stimulated

Skeletal Muscle generates the greatest tension when the muscle is stretched to an intermediate length, by length-tension relationship.

How tension generates in skeletal muscle?

Muscle tension is highest in skeletal muscles when stretched to an intermediate length, as indicated by the length-tension relationship.

When skeletal muscle fiber contracts, myosin heads link to actin to create cross-bridges, and the thin filaments slide across the thick filaments as the heads pull the actin, resulting in sarcomere shortening and muscular contraction stress.

The amount of stress produced by a muscular contraction is determined by two factors: the number of active muscle fibers and the frequency of neural stimulation of the muscle fibers.

Therefore greatest tension generates in skeletal muscle when it is stretched to the intermediate length.

Learn more about skeletal muscle, here:

https://brainly.com/question/3191239

#SPJ2

What is the function of parenchyma cells?

Answers

Answer:

help in storage and support

According to the text, the main reason that humans are one of the few species to have long, committed relationships is that:

Answers

humans think that they need to connect more than animals for animals it's all about survival making love hard. Animals only think about mating and staying alive. but humans have the time to think about love.  

The main reason that human beings are one of the few species to have long, committed relationships is that: human babies are born before they are completely advanced and for that reason need a number of care.

What defines a species?

Species are characterized by means of the reality that they're reproductively remoted from different organizations, which means that the organisms in a single species are incapable of reproducing with organisms in any other species. The term species also can be described as the maximum fundamental category within the device of taxonomy.

What are the primary predictors of violence?

Many predictors of violent behavior are predictors of different issues, inclusive of substance abuse, delinquency, school dropout, and teenage pregnancy (Dryfoos, 1991; Hawkins, Catalano, and Miller, 1992). The threat of violence is likewise compounded via the number of danger elements concerned.

Learn more about species here: https://brainly.com/question/25939248

#SPJ2

whats the process of (kepler-186f) fusion between these atoms that occurs in all-stars

Answers

Answer: the main element

Explanation: vamp

I really need help this is carbon cycle help me label it

Answers

Answer:

1.) Photosynthesis

2.) Respiration by plants

3.) Feeding

4.) Death and waste

5.) Respiration by animals

6.) Decomposition

7.) No Decomposition

8.) Combustion

Hope this helps!

What does an optical part of the light microscope consist of? A. Ocular.
B. Diaphragm.
C. Condenser.
D. Turret

Answers

Answer-
C. Condenser

Select ALL the correct answers.
Which statements correctly describe mutations in gametes and mutations in somatic cells?
Mutations to somatic cells are transferred to daughter cells,
ODOS O
Mutations to gametes can be passed on to an organism's offspring,
Mutations to gametes do not involve changes
in the DNA.
Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
Mutations to somatic cells will be inherited by an organism's offspring
Mutations to gametes are more likely to be beneficial than mutations to somatic cells.
Reset
Next

Answers

i just want lou bts my dad to

HELP NEEDED ASAP! 30 POINTS AND BRAINLYEST TO WHOEVER ANSWERS WITH THE BEST ANSWER! What are 3 examples of gene therapies that are used to treat diseases?

Answers

Answer:

Viruses used in gene therapy are retroviruses, adenoviruses, adeno-associated virus, herpes simplex, and vaccinia. Retroviruses are most commonly used because they can incorporate their genetic material into the host cell’s DNA, thus changing the genetic component of that cell.

Explanation:

Gene therapy is a medical field which focuses on the genetic modification of cells to produce a therapeutic effect or the treatment of disease by repairing or reconstructing defective genetic material. The first attempt at modifying human DNA was performed in 1980 by Martin Cline, but the first successful nuclear gene transfer in humans, approved by the National Institutes of Health, was performed in May 1989. The first therapeutic use of gene transfer as well as the first direct insertion of human DNA into the nuclear genome was performed by French Anderson in a trial starting in September 1990. It is thought to be able to cure many genetic disorders or treat them over time.

Gene augmentation therapy.

Gene inhibition therapy.

Killing of specific cells.

I think this is what you want but i'm only 14 and in 10th so sry if its not

WILL MARK BRAINLIEST
What is the biggest difference (other than their size) between a hot air balloon and a “regular” balloon?

Answers

Hot air balloons float because the air within the balloon is heated by a burner, making it less dense than the air around it, allowing the weight to get lifted from below. Gas balloons may be filled with either helium or hydrogen and use sand as ballast.

Explanation:

The minimum number of microorganisms necessary to enter the body and establish infection is termed the _______.

Answers

Answer:

it is term to the power of the White blood cells

green and yellow wavelengths of light are not useful to most plants.

Answers

The answer here is True

The statement that green and yellow wavelengths of light are not useful to most plants is incorrect. In fact, green and yellow wavelengths of light are essential for plant growth and photosynthesis.

Plants primarily capture light energy for photosynthesis using specialized pigments called chlorophylls, which are most efficient at absorbing light in the red and blue regions of the spectrum. As a result, the green wavelengths of light are reflected rather than absorbed by chlorophyll, giving plants their characteristic green color.

While it is true that green light is less absorbed by chlorophyll compared to other wavelengths, it still plays a vital role in photosynthesis. Green light is still partially absorbed and contributes to energy transfer within the plant, helping drive the photosynthetic process.

Moreover, certain types of plants, such as shade-tolerant plants or plants adapted to low-light conditions, have chlorophyll pigments that are more efficient in capturing green and yellow wavelengths of light. These plants can utilize a broader range of light wavelengths for photosynthesis, including green and yellow light.

Therefore, green and yellow wavelengths of light are indeed useful to most plants. While red and blue light are more efficiently absorbed, green and yellow light still contribute to the energy needs of plants and play a role in photosynthesis.

To learn more about wavelengths, here

https://brainly.com/question/31143857

#SPJ2

when plants are red flowers are crossed with plants with white flowers What proportion of The Offspring will have pink flowers

Answers

The pink flower donates the r allele and produces pink flowers in 50% of the offspring. The genotype for the pink flower is Rr and the genotype for the white flower is rr. This would lead to a 50% chance of the offspring having a phenotype of pink.

dna is a double-stranded molecule made up of complementary, antiparallel strands. based on what you know about complementary base pairing, fill in the rest of the details in the figure. drag the labels to their correct positions.

Answers

DNA molecule is composed of nucleotides joined by their extremes. Nitrogenated bases are joined by hydrogen bonds. A Phosphate group is in the 5' extreme, and -OH in the 3' extreme.

------------------------------------

DNA is a polymer composed of different nucleotides joined by their extremes.

Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.

Nitrogenated Bases

Nitrogenated bases are molecules carrying nitrogen and exhibiting the chemical properties of a base.

Nitrogenated bases are purines and pyrimidines. Adenine and guanine derive from purines, while Thymine and Cytosine derive from Pyrimidines.

Adenine pairs with thymine, while guanine pairs with cytosine.

2 hydrogen bonds join A-T

3 hydrogen bonds join C-G.

Sugar group

The sugar group contains deoxyribose, with hydroxyl modifications.

Sugar is always a pentose.

The free OH group is associated with this ring

It is always associated with the 3' extreme

Phosphate group

There is a P in the center of the group

It is always in the 5' extreme

------------------------------------------

Related link: https://brainly.com/question/20813587?referrer=searchResults

                     https://brainly.com/question/17884307?referrer=searchResults

                    https://brainly.com/question/21368160?referrer=searchResults

What is the molecule that leaves the calvin cycle to be converted into glucose?.

Answers

Answer:

G3P Molecules

Explanation:

The molecules of ADP and NAD+, resulting from the reduction reaction, return to the light-dependent reactions to be re-energized. One of the G3P molecules leaves the Calvin cycle to contribute to the formation of the carbohydrate molecule, which is commonly glucose (C6H12O6).

what are processes of the water cycle that return water to the atmosphere

Answers

Answer:

Evaporation and transpiration change liquid water into vapor, which ascends into the atmosphere due to rising air currents.

Black hair (b) is dominant over brown hair (b) in guinea pigs. What is the genotype of a brown guinea pig?.

Answers

Answer:

the genotype of the brown guinea pig would be 'bb'

Explanation:

if it had black hair the possible genotypes would be 'Bb' or 'BB' because any genotype with a capital letter is dominant and brown hair is a recessive trait I'm assuming considering the question says "over"

What are the Acute myeloid Leukemia stages?

Answers

Answer:

M0: undifferentiated acute myeloblastic leukemia.

M1: acute myeloblastic leukemia with minimal maturation.

M2: acute myeloblastic leukemia with maturation.

M3: acute promyelocytic leukemia.

M4: acute myelomonocytic leukemia.

M4 eos: acute myelomonocytic leukemia with eosinophilia.

M5: acute monocytic leukemia.

Explanation:

Stage 0. The blood has too many white blood cells called lymphocytes. This is called lymphocytosis. ...

Stage I. The blood has too many lymphocytes. ...

Stage II. The blood has too many lymphocytes. ...

Stage III. The blood has too many lymphocytes. ...

Stage IV. The blood has too many lymphocytes.

both works hope this helps.

What is the name of the organelle in the leaves of plants that absorbs the sun's energy?.

Answers

Answer:

The name is chloroplasts

Explanation:

1:Can all genetic mutations be observed with a karyotype? Explain:
2:Evaluate the use of karyotyping in genetic testing to determine the health of an unborn baby.

Answers

Explanation:

Karyotyping is a test to examine chromosomes in a sample of cells. This test can help identify genetic problems as the cause of a disorder or disease.

[tex] [/tex]

Does “survival of the fittest apply to domesticated animals? Why or why not? *

Answers

Answer:

Yes.

Explanation:

This survival of the fittest is instinct helps domestic animals live. Just because an animal is domesticated, does not mean that instincts go away. Those instincts like hunting may get suppressed, but not taking away.

Answer:

Survival of the fittest does not apply to domesticated animals. This is because these animals don't live in the wild so they don't have to run after things and kill them. Their food comes out of a tin and is provided by human beings. They don't have any predators so their lives are seldom at risk. Thus, they don't need to be fitter or more powerful than other animals in any way.

Lets take the example of pet dogs. We keep them for our support or simply because we enjoy their company. We provide them with food, shelter etc. and protect them. Since, we basically do everything for them; they need not evolve into a stronger, more powerful species.

However, in the case of stray dogs, they have to fight for their survival. They have to fight with other dogs for food and shelter. Hence, survival of the fittest will apply here as the strongest dog gets to eat.

Hope this helps.

Please mark me as brainliest.

How much atp is produced in cellular respiration.

Answers

Biology textbooks often state that 38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).

A farmer planned to plant 120 seeds in all. After planting 10 more seeds each day than was planned.

Answers

Answer:

120+10x=x

Explanation:

120+10 times the number of days equals answer

7)When a body cell divides through the process of mitosis, the chromosomes in the daughter cells *
10 points
are formed when chromosomes from the parent cell cross over.
are identical to the chromosomes of the parent cell.
represent only the healthiest chromosomes from the parent cell.
represent only half of the chromosomes in the parent cell.

8)Before a cell enters mitosis, what happens to the genetic information in that cell? *
10 points
The information is duplicated.
The information is selectively mutated.
The information is halved.
The information is completely changed.

9)Which of the following best describes how mitosis is related to cellular reproduction? *
10 points
Mitosis is a phase in asexual reproduction that results in the formation of similar, but not identical, nuclei in the daughter cells.
Mitosis is a phase in asexual reproduction that results in the formation of identical nuclei in the daughter cells.
Mitosis is a phase in sexual reproduction that results in the formation of similar, but not identical, nuclei in the daughter cells.
Mitosis is a phase in sexual reproduction that results in the formation of identical nuclei in the daughter cells.10)Which of the following occurs during the interphase stage of the cell cycle? I. DNA is replicated. II. The cell divides. III. The cell grows in size. *
10 points
II only
I and III only
I, II, and III
I and II only

11)A diagram of the cell cycle is shown below. Which of the following statements best describes what happens during the S phase of the cell cycle? *
10 points
Captionless Image
The cell's chromosomes separate.
The contents of the cell divide.
The cell's DNA is replicated.
The cell prepares for mitosis.

12)At a point during a cell's development, it begins to differentiate. How does differentiation occur? *
10 points
Certain genes are turned on and others are turned off; this action produces adult cells that are specialized
As a cell matures, genes that are not necessary to its function are ejected out of the cell through active transport.
The number of chromosomes in the cell is reduced by half; this action triggers the specialization of the cell.
A developing cell's function is determined by the number of organelles that are contained in the cell.

Answers

Through the mitotic process, two identical diploid daughter cells are produced. Mitosis is preceeded by the interphase and followed by cytokinesis. 7) b. / 8) a. / 9) b. / 10) b. / 11) c. / 12) a.

-------------------------------------------------

The interphase occurs before cell division. It is composed of the G1, S, and G2 stages.

During the G1 stage, the cell duplicates in size. The organelles and other cytoplasmatic structures duplicate. The high intense biochemical activity is characteristic of this stage.

During the S stage occurs the DNI molecule replication process. At this point, also happens the synthesis of histones and other associated proteins.  

The G2 stage is the final one before the cellular division. Here begins the slow process of DNI condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.  

Mitosis is a process by which, from a diploid somatic cell (2n), two daughter diploid cells (2n) are produced.  

Daughter cells are identical to the original cell.

Mitosis occurs in only one phase, divided into four stages.

In the prophase, it occurs chromosomes condensation and nuclear membrane breaks.

During the metaphase, chromosomes are taken toward the center of the cell by the spindle apparatus. Once in the equatorial plane, chromosomes line up.

Each chromatid joins with a microtubule of opposites poles.

In Anaphase, bonds between chromatids break. They separate and migrate to the opposite poles.

In telophase, duplicated chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole.  

Finally, cytokinesis occurs.

                                       *************************************

Now, according to this theoretical framework, we can answer the questions.

7) b. are identical to the chromosomes of the parent cell.

8) a. The information is duplicated.

9) b. Mitosis is a phase in asexual reproduction that results in the formation of identical nuclei in the daughter cells.

10) b. I and III only

11) c. The cell's DNA is replicated.

12) a. Certain genes are turned on and others are turned off; this action produces adult cells that are specialized

----------------------------------

Related link: https://brainly.com/question/538483?referrer=searchResults

                     https://brainly.com/question/20223797?referrer=searchResults  

                     https://brainly.com/question/10606931?referrer=searchResults

                     https://brainly.com/question/1983951?referrer=searchResults

                     

Where does the chemical energy to produce ATP come from?

The use of chemicals fro the environment to make sugars

The conversion of ATP to ADP

The breakdown of carbon-based molecules into smaller molecules

The addition of a phosphate group to ATP

Answers

The break down of carbon based molecules into smaller molecules

Which of the following help to break down proteins?

Answers

Answer:

b. Pepsin and trysin

Explanation: is correct

B) pepsin and trysin

What should be done with the contents of
a composter? Explain your reasoning.

Answers

Answer:

Finally, the number of times the pile is turned influences composting speed. By turning more frequently (about every 2-4 weeks), you will produce compost more quickly. Waiting at least two weeks allows the center of the pile to heat up and promotes maximum bacterial activity. The average composter turns the pile every 4-5 weeks.

When turning the compost pile, make sure that materials in the center are brought to the outsides, and that materials from the outside edges are brought to the center.

With frequent turning, compost can be ready in about 3 months, depending on the time of year. In winter, the activity of the bacteria slows, and it is recommended that you stop turning the pile after November to keep heat from escaping the pile's center. In summer, warm temperatures encourage bacterial activity and the composting process is quicker

Using compost in the yard

Incorporate compost into your garden as you prepare the soil in the spring. Cover the area with 3-4 inches of soil and till it in to at least the upper 6 inches of soil. Add compost to soil in vegetable gardens, annual flower beds, and around new perennials as they are planted.

You may also use compost as mulch around flower beds, vegetable gardens, or around trees or shrubs in landscape beds. Apply a 3 inch layer. Be careful not to apply mulch close to the main stem or trunk of the plant.

Explanation:



Which of the following is a reasonable claim the researchers can make based on the data in the graphs?

Answers

Answer:

First give the options we can't tell random ir may be wrong give options because in question it is asking which of the following if we say any randomly it becomes wrong.

What is oxidative phosphorylation.

Answers

Answer:

Oxidative phosphorylation or electron transport-linked phosphorylation or terminal oxidation is the metabolic pathway in which cells use enzymes to oxidize nutrients, thereby releasing chemical energy in order to produce adenosine triphosphate. In eukaryotes, this takes place inside mitochondria

Answer:

Oxidative phosphorylation is energy given by electron transport and this takes place during aerobic respiration in the mitochondria.

Explanation:

This process produces huge amounts of ATP, which is the unit of energy for metabolic processes.

How to calculate allele frequency.

Answers

Answer:

by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population

how do identify veins in our body​

Answers

Answer:

Veins are blood vessels in humans, and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.

Explanation:

Other Questions
What is 162 multiplied by 0.967 Where did the Susquehannock live? Why is this so helpful find the measure of A. Does anyone know this? Foster is centering a photo that is 9 1/2 inches wide on a scrapbook page that is 10 inches wide. How far from each side of the page should he put the picture? Enter your answer as a mixed number. / pls help quick If 24 people fit in 12 RVs,How many people are in each RV? On January 1, Year 1, Kennard Co. issued $2,000,000, 5%, 10-year bonds, with interest payable on June 30 and December 31 to yield 6%. The bonds were issued for $1,851,234. a. Prepare an amortization schedule for Year 1 and Year 2 using the effective interest rate method. Round answers to the nearest dollar. Enter all amounts as positive numbers. Miko wants to build a toybox for her sister. It is to be 2 feet high,and the width is to be 3 feet less than itslength. If it needs to hold a volume of80 cubic feet, find the length and widthof the box. Which of the vitamins would be potentially the most dangerous toconsume in high does (greater than 10 X RDA) as single micronutrient?O vitamin AO vitamin B-12O vitaminO riboflavin???? Which country or countries allow their citizens to vote for the president?i. the United Kingdomii. Germanyiii. RussiaA. i. onlyB. ii. onlyC. iii. onlyD. ii. and iii.Please select the best answer from the choices providedO AB. Who can declare war?IIIIIIIIIIIIIA. PresidentB. Vice PresidentC. The PeopleD. CongresS The most important labor force issue for developed economies is their _________ populations. global diverse aging all of these Estimate under what set of conditions it is possible, despite the spherical shape of the working electrode, to use linear diffusion equations to theoretically predict the current vs voltage curve expected in this experiment. if in a game of glass stepping stones. there are 18 tiles of glass. two in each row. one is tempered and will be fine if you jump on it. and the other will break. if 1 player was to play what are his/her chances of getting across?(NO links) favotire mha charcter and why? what is the most underated quirkbest quirk?worst quirk?is mineta x trash a good ship? 1. Find the slope of the line that passes throughthe points (6, 13) and (-3, 7). [tex]\sf 4x-15=3[/tex] Kylie borrowed a book from a library. The library charged a fixed rental for the book and a late fee for every day the book was overdue. The expression below shows the charges Kylie paid for the book when she returned it x days after the due date:2 + 0.25xWhat does the constant term of the expression represent? (1 point)The late fee for the bookThe fixed rental for the bookThe number of books borrowedThe number of days the book was overdue Help me answer these math problems. They are due by 10:00 PM Tonight. Please answer them carefully. 1. What is the formula for simple interest?2. If Michael invests $2300 in the bank at a rate of 5.5% for a 6 year term, what will the interest be at the end of the term? (round to nearest cent)3. Kelsey takes out a loan for $6000 to start a business after high school. The bank charges her 8% simple interest for the loan. Term is five years. After 5 years , what will the balance be for the repayment of this loan? (round to nearest cent)4. Jessie invests $3345 in the stock market. Over the 3 years she has this invested, she gets an average return of 7.8% simple interest. How much interest will she had made over the 3 year period? (round to nearest cent)5. How much of a difference is there, in interest, between an investment of $899 with simple interest of 5% and an investment of $499 with a simple interest of 9%, both for a six year term? (round to nearest cent)6. What balance will you have in your account, in 8 years, if you invest $4000 at 3.5% compounded quarterly? (round to nearest cent)7. Gina deposited $1500 in an account that pays 11% interest compounded monthly. What will the balance be in 5 years? (round to nearest cent)8. You invested $4,400 for 2 years at 7.3% compounded semianually. What is your total balance after 12 years? (round to nearest cent)9. You want to buy a new motorcycle so you borrow $14,200 for 5 years at an interest rate of 13% and its compounded daily. How much interest will you have paid after the 5 year term has ended? (round to nearest cent)(PLEASE ANSWER THESE QUESTIONS TONIGHT BY 8:00 PM)