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

true or false. sequence read 2 is identical to the reference genome.

Answers

Answer:

False

Explanation:

A reference provides a haploid mosaic of different DNA sequences from each donor.

Give an example of an attitude which you have observed between people in different levels of society.

Answers

Explanation:

I have been seen a person who always want eat a food that I have never heard it before when I am born. he cherish it Soo much

In which process are glucose and oxygen the reactants?


cellular respiration


photosynthesis


ATP production


ADP production

Answers

Answer:

Cellular Respiration is the process in which glucose and oxygen are the reactants

Look at the diagram Which structure holds the original code from the DNA gene?​

Answers

Answer:

The answer is 4/D)4. Don't expect me to get scientific in this, I'm using brainly and coursehero after all. Sorry for being a year late, hopefully it took you a year to finish the test. . .

Explanation:

K12/Keystone

What type of cell is shown above?
A.
prokaryotic
B.
plant
C.
eukaryotic
D.
animal

Answers

Answer:

A

Explanation:

The awnser is A ___________

what cells are the stem cells for spermatogenesis?

Answers

Answer:

Spermatogonial stem cells

Explanation:

What are the four functions of lipids

Answers

Answer:

Store Energy – When we take in more energy than we need, the body stores it as adipose tissue (fatty tissue, which we call fat).  

Regulate and Signal – Lipids regulate the temperature of your body, keeping it steady, not too hot, and not too cold.  

Insulate and Protect – Our bodies are padded with fat, protecting us from everyday friction.

Aid Digestion and Increase Bioavailability – When food breaks down in the gut, fat is released and combines with fat-soluble nutrients

Explanation:

Which pathogen poses the greatest risk to a researcher handling non-human primates if they are exposed and infected with the infectious agent:

Answers

Answer:

Cercopithecine Herpes virus-1 (B-virus)

Explanation:

Cercopithecine Herpes virus-1 (B-virus) pathogen poses the greatest risk to a researcher handling non-human primates if they are exposed and infected with the infectious agent.

What are pathogen ?

pathogens are the biological agent that can cause a disease in another organism upon infecting and causes infectious diseases. ‘Pathogen’ is a or disease-causing organisms such as bacteria, viruses, fungi, protozoans and worms.

There are different types of pathogens such as Class 1 pathogen in which the species is not associated with infectious disease. Class 2 are the pathogen species cause disease in humans but not serious and the the preventive methods, treatments are available.

Class 3 pathogens include the species cause serious diseases in humans, but necessary prophylaxis and treatment are available; Class 4 pathogens include the species cause serious human disease and disseminate in the human population with  no adequate prophylaxis or therapy exists.

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What way does ribosomes mobe.

Answers

forward
The ribosome moves forward on the mRNA, codon by codon, as it is read and translated into a polypeptide (protein chain). Then, once translation is finished, the two pieces come apart again and can be reused.

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

Match each brachial spinal nerve with the correct label.

Answers

Answer:

yes those are the correct answers labeled.

Explanation: post protected

QUIK QUESTION: have any of y'all be on probation lol? And if so help a gurley out what ya gotta do?

Answers

Answer:

yes

Explanation:

suggest a reason why termites have no eyes

Answers

Answer:

the pests have antennae covered with moisture-sensing receptors

Explanation:

Answer:

Many species of termites need to find areas of vegetation with plenty of moisture to survive. To get around their lack of vision, the pests have antennae covered with moisture-sensing receptors.They also have eyes but their wings do not develop further. These develop into the neotenics (see below), which are one of the reproductive types and have the ability to produce eggs in the colony in certain situations

Explanation:

MARK ME AS A BRAINLIST PLZ

Plant cells like ____ hair cells have a long projection to increase the surface area for absorption of water

Answers

Answer:

root hairs

Explanation:

what do you know about industrialization

Answers

Industrialization is the process by which an economy is transformed from a primarily agricultural one to one based on the manufacturing of goods. Individual manual labor is often replaced by mechanized mass production, and craftsmen are replaced by assembly lines.

What organism belongs to the Prokaryotic domain of life and it comes in three different
shapes, such as cocci, rod, and spiral?

Answers

Answer:

eubacteria

Explanation:

I took the quiz :)

The organisms that belong to the Prokaryotic domain of life and it comes in three different shapes, such as cocci, rods, and spirals are known as Eubacteria.

What do you mean by the Prokaryotic domain?

The prokaryotic domain may be characterized as the kingdom of Prokaryotes is significantly made up of two domains namely, Archaea and Bacteria. These eubacteria are classified under the domain of bacteria which is represented by the relation based on the DNA experimental approach.

According to the context of this question, there are mainly three types of eubacteria commonly found. They are round (coccus), rod-like (bacillus), comma-shaped (vibrio), or spiral. All these types of different body plans, structures, and functions with respect to their morphology.

Therefore, eubacterium is a type of organism that belongs to the Prokaryotic domain of life and it comes in three different shapes, such as cocci, rod, and spiral.

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A mother has type O blood and a father is heterozygous for type B blood. What are the chances of the offspring having type O blood?

Answers

Answer:

50 percent

Explanation:

O is a recessive trait. The father has a B and an O, using a punnet square you are able to determine that the possible outcomes are BO, BO, OO, and OO

A good way to avoid bias when collecting samples is to ___.
a. collect a small sample number
b. use many different types of variables
c. use three different types of variables
d. collect a large sample number

Answers

Answer:

D. Collect a large sample number

Explanation:

With a larger sample number, that means that more people participated and gave the correct answer. If you constantly change the variable, the answer may always be the same but because of the variable you changed.

air from the nasal cavity enters the superior portion of the pharynx called the

Answers

Answer: Nasopharynx.

.......

Select all of the choices that are true regarding tides...

Spring tides occur when the gravitational pull of the sun and moon are in line with each other, while neap tides occur when the gravitational pull of the sun and moon are perpendicular to each other

Tides only occur in the ocean

Tidal forces are primarily caused by the moon's gravitational pull

Larger bodies of water have more noticeable tides

Tidal forces are caused by a combination of the gravitational pull of the Moon and the Sun

Spring tides occur when the gravitational pull of the sun and moon are perpendicular to each other, while neap tides occur when the gravitational pull of the sun and moon are in line with each other

Answers

Answer:

a,b,c,e

Explanation:

please mark as brainlists

plzz help

Which describes a promoter?

a. the first part of an operon that regulates where, when, and to what level a gene is
expressed

b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene

c. a cluster of genes that are expressed or repressed as a group

d.an enzyme that helps DNA unzip prior to transcription

Answers

Answer: A

Explanation: email for more help my address is

charlescarey0906(at symbol)g ma il.com

no spaces or caps

Answer:

a :)

Explanation:

When Clara's doctor taps her knee with the rubber hammer, her knee ______. Which portion of the spinal cord is responsible for this movement?

Brainly notice: Don't use such phrases here, not cool! It hurts our feelings :(

Answers

Answer:

b. Grey matter

Explanation: is correct

Answer:

The answer is letter B.

Explanation:

Gray Matter

6. As the lunar cycle progresses from the full moon to new moon the light will appear to _________.

7. The “growing light” that appears during the first half of the lunar cycle is referred to as __________.

8. The ___________ phase occurs at 21 days into the cycle and shows the left half of the moon illuminated.

9. In a crescent stage __________ than half of the Moon appears illuminated and during a gibbous stage __________ than half appears illuminated.

-I know this is asking for a lot but I really don’t know-
-I need the answers asap!-
-thanks in advance!-

Answers

Answer:

6. As the lunar cycle progresses from the full moon to new moon the light will appear to decrease

7. The “growing light” that appears during the first half of the lunar cycle is referred to as waxing.

8. The third quarter / 7th phase occurs at 21 days into the cycle and shows the left half of the moon illuminated.

9. In a crescent stage less than half of the Moon appears illuminated and during a gibbous stage more than half appears illuminated.

Explanation:

The "growing light" that appears during the first half of the lunar cycle is referred to as the "waxing phase" ,the first quarter phase occurs 21 days into the cycle and in the crescent stage, less than half of the moon appears illuminated.

What is the significance of the lunar cycle?

It has much significance and is related to the moon, which is a natural navigation aid for mariners, providing light at night and it has an impact on the life cycles of animals and plants, including breeding and migration, and the gravitational pull of the moon and the sun causes the tides to rise and fall.

Hence, the "growing light" that appears during the first half of the lunar cycle is referred to as the "waxing phase" ,the first quarter phase occurs 21 days into the cycle and in the crescent stage, less than half of the moon appears illuminated.

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why can a student see her reflection on a computer moniter when the monitor is turned off

Answers

Answer:

Because the screen becomes black and the screen lets the light come. Hope this helps!!

Explanation:

What features distinguish annelids from roundworms?

Answers

Answer:

Annelids have a well developed mesoderm while round worms lack a mesoderm.

Annelids are segmented worms whereas round worms are not segmented.

Annelids have a true coelom while round worms have a pseudo coelom.

Which type of inheritance is described here?
A gene on chromosome 2 in mice can cause males to lose their hair earlier than females.

Answers

Answer:Mice can be male without Y chromosome ... Ward’s work is “a lovely example of how you can lose even a really important gene,” she says. ... don’t have Eif2s3y genes on their Y chromosomes.

Explanation:

Beaches are monitored to protect public health. Waterborne pathogens can cause illnesses. Which of the following ways can pathogens enter coastal waters?
Leaking sewer pipes and untreated wastewater
Precipitation through the water cycle
The changing of low tide to high tide
Through the interactions of marine organisms and plants

Answers

Waterborne pathogens can enter coastal waters via leaking sewer pipes and untreated wastewater.

Sewage and untreated wastewaters are filled with microbes some of which are capable of causing diseases to humans and livestock if given the opportunity. Hence, the seeping of these waters into coastal water is a risk to humans who might want to swim or make use of coastal waters.

Precipitation, changing of tides and the interactions of marine organisms and plants will ordinarily not form pathways through which pathogens can gain access to coastal waters.

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why did active transport need energy?&where it get it from?​

Answers

Answer:

Active transport needs energy because it is not a passive process.The molecules has to go against the concentration gradient.Hence, it requires energy to be carried out by the carrier proteins.

The answer is not full but I hope it helps

Sofia’s favorite meal is breakfast, and she is careful to include healthy components along with her favorite foods. She knows breakfast helps to keep her energy levels up until lunch. Sophia's digestive system helps her body get energy from food. How do the nutrients from food get to the body's cells? A. The nutrients are distributed by the digestive system to the parts of the body that need them. B. The nutrients are picked up and transported around the body by blood from the circulatory system. C. The nutrients are absorbed directly into the cells that need them. D. The circulatory system brings nutrients to the digestive system to be processed for the cells.

Answers

Answer: c

Explanation:because it needs cells I think…

The nutrients from the food get to the cells of the body by the action of two organ systems i.e. the digestive system and the circulatory system.

What is the role of the digestive system?

The digestive system may be defined as a type of organ system that significantly deals with the breakdown of food substances into simpler components that can easily be consumed by the body.

According to the context of the question, the food that we eat reaches the stomach through the esophagus where multiple enzymes perform their roles. After the stomach, the food may be passed to the small intestine which is absorbed here and then the nutrients assimilate in the blood.

Through the blood, the nutrient can be transported around the body by blood from the circulatory system. Thus, the correct option for this question is B.

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Which of the following statements is TRUE if Joel and Karen are doing exactly the same things, but Joel has a higher metabolic rate than Karen?

Answers

Answer:

a. Joel burns more calories than Karen.

Explanation: is correct

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