BIOLOGY COLLEGE

How do you dry specimen that would be view under scanning electron microscope​

Answers

Answer 1
Answer:

Answer:

are coated with a thin layer of metal (usually gold or gold-palladium). The metal coating makes samples conductive

Related Questions

Nicolaus Copernicus revolutionized astronomy by:discovering the first planet proposing that the sun revolves around the earth stating that the sun is the center of the solar system tracking the movement of the planets and stars
Major centers concerned with autonomic control of breathing, blood pressure, heart rate, and digestive activities are located in the A) medulla oblongata. B) pons. C) midbrain. D) diencephalons. E) cerebellum.
Answer the questions.1. Can a bird have a nest? 2. Can a bird have a house? 3. Can a bird have a truck?
“I do not need to use a citation if I paraphrase because I put it in my own words.”Why is this statement inappropriate?
Solar energy is used to produce energy-rich compounds in which structure?A.AB.BC.CD.D

What is the term for a fruit that develops from tissues other than the ovary?simple fruit
aggregate fruit
multiple fruit
accessory fruit

Answers

The correct answer is D. Accessory fruit

Explanation.

Fruits are structures that develop from the fertilized ovary of plants and that contain the seed of it, this includes simple, aggregate and multiple fruits. However, there is one type of fruits that do not develop from ovary but from other tissues that are usually near the ovary, these fruits are called accessory or pseudo fruits as they do not fit completely the definition of regular fruits, this includes fruits such as strawberries or pineapples that develop from tissues different to the ovary.

Answer:

the correct answer is accessory fruit

Explanation:

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Determine if the equations represent synthesis reaction, decomposition reaction, single displacement reaction, or double displacement reactions .

Answers

The reaction of calciumsulfate is double displacement reaction, the reaction of copper and oxygen is synthesis reaction. The reaction of copper oxide and oxygen is single displacement reaction.

What is chemical reaction?

When atoms establish or break chemicalbonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

Combination, decomposition, single-replacement, double-replacement, and combustion are the five fundamental types of chemicalreactions. You can classify a reaction into one of these groups by looking at the reactants and products.

Calcium sulphate undergoes a doubledisplacement reaction, whereas copper and oxygen undergo a synthesis reaction. Copper oxide and carbon is single  displacement reaction.

Thus, first is double displacement reaction, second is synthesis reaction, as well as third reaction is single displacement reaction.

For more details regarding chemical reaction, visit:

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it’s moral to preserve because you need to take care of there habitats instead of resorting them

Answer:talk about how fascinating Nature is in all of the good qualities it’s good to preserve nature for animals and to make the world last longer with things like pollution and go on from there

Explanation:

If a DNA molecule was a spiral staircase, what would the steps of the staircase be?​

Answers

Answer:

Nitrogenous bases

Explanation:

DNA is a nucleic acid molecule that acts as the genetic material of the organisms. The structure of DNA is made of two strands of nucleotides that are linked together and form a helical structure. The helical structure is known as the double-helical model with a ladder-like appearance.

The backbone of the ladder is composed of the sugar and phosphate groups at alternate positions whereas the staircase of the ladder are made of the different type of nitrogenous bases (A, G, T, C)  joined by the hydrogen bond.

Thus, Nitrogenous bases is the correct answer.

A student studies art and learned that he has several layers including inner and outer cores the student will make a model of the inner and outer cores of earth which model would be most like earths actual inner and outer cores A: A pool of liquid inside a solid metal ball. B: Metal ball with a slightly smaller solid metal ball inside it. C: A solid metal ball in the middle of a pool of liquid. D: A pool of one type of liquid in the middle of a pool of another type of liquid

Answers

Answer:

C: A solid metal ball in the middle of a pool of liquid.

Explanation:

Since the student is studying the earth, the core area is made up of a solid metal ball in the middle of a pool of a liquid.

  • The core is the inner most part of the earth.
  • It exists in the middle of the earth.
  • The core is divide into two layers; inner core and outer core.
  • The inner core is a solid ball of metal.
  • The outer core is a liquid metal under high temperature and pressure.

The evolution of new organs usually builds on preexisting structures that are modified in form and sometimes function. The embryos of fish, amphibians, reptiles, birds, and mammals all have pharyngeal pouches or gill slits. These pouches develop into gills in adult fish and they are used to absorb oxygen from their watery environment. These same pouches become parts of the in_________ humans. a) eyes and lungs
b) ear and throat
c) eyes and nose
d) lungs and heart

Answers

Answer:

lungs and heart

Explanation:

lungs and heart is the answer because human lungs is use for gas exchange during respiration or while you breathe. When humans breathe, the lungs absorb oxygen from the inhaled sir into the blood and carbondioxide leaves the blood when we breathe out. The heart pumps the blood, and oxygenated blood are carried in the blood when air is inhaled and carbondioxide leaves the blood when you exhale. The blood carries nutrients and oxygenated blood. Therefore, lungs and heart work hand in hand in absorbtion of oxygen from it's environment.
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Based on each person's statements, identify which of the following you AGREE with, and then explain your reasoning. Courtney: “It is obvious that everything that eats plants would die but all the other organisms on the island would be okay.” Jose: “Courtney I think the organisms that eat plants would just learn to eat other things. So initially they might decline in numbers but eventually, their numbers would increase back to their current amount.”Raquan: “I have to disagree with both of you. I think that all of the organisms on the island would die, because at some point even the mammals who don’t eat plants directly would ultimately discover that what they usually ate has already died.” Mike: “I kind of agree with Courtney, except I don’t think that all of the things that eat plants will die. I think the things that eat both plants and animals would live and only those that can’t or won’t eat animals will die.” Keisha: “Mike is right. I would add that since there are fewer things for the larger mammals to eat that we would ultimately see fewer of them on the island.” Alex: “I argue that organisms that eat plants would learn to swim so they can eat the seaweed and algae in the water.”Plzz explain your reasoning!!
4. What is population density?​
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