briefly explain the slide preparation for Dark and bright field microscope ​

Answers

Answer 1

Answer:

dhehfhsghfgwhgf

Explanation:

Answer 2

hshsbdidjhdhshshsbsbs


Related Questions

Give several reasons why the cane toads can be so disastrous for native species. In other words, what are the reasons why they are such successful invaders

Answers

Answer:

They reproduce so quickly and largely to occupy the areasb)They spread everywhere in Australia c)They produce poison component in skin which cause native species dead. For example, the steroids, which affect heart muscles, will kills the western native cats in 20 minutesd)They do not have natural enemies e)People think cane toads are petsf)Anything that moved and smaller than cane toad was potential prey2. Describe what might happen to the ecosystem where the toads invade.a)Because the cane grub and beetle cannot satisfy their requirement of food, they eat everything, the ecosystem will damageb)They live in the people’s garden and house, which influences people’s daily lifec)The gland is poisonous, which causes people dead, especially for babies and young childrend)They will hurt people’s eyese)They need native animals

Explanation:

HOPE IT HELPS :D

why still humans have hair on body ?​

Answers

Answer:

Hair is important for maintaining skin health, as each hair follicle has blood vessels, nerves, and fat around it. Hair follicles are rich in stem cells that promote healing of the skin — helpful if you have a cut or wound. Hair also keeps a person warm and protects the skin from sun damage.

Explanation:

this might help

Answer:

See below

Explanation:

Humans have hair on their bodies to prevent infections from entering the body. Lets take nose hair for example, while you breathe in and out threw your nose, any airborne virus may be caught and tangles in your nose hair, thus making it near impossible to enter your body, it is still possible though to enter the body.

Hair is important for maintaining skin health, as each hair follicle has blood vessels, nerves, and fat around it. Hair follicles are rich in stem cells that promote healing of the skin — helpful if you have a cut or wound. Hair also keeps a person warm and protects the skin from sun damage

While humans have developed clothing and other means of keeping warm, the hair found on the head serves primarily as a source of heat insulation and cooling (when sweat evaporates from soaked hair) as well as protection from ultra-violet radiation exposure. The function of hair in other locations is debated.

57:55
Where are rain gauges located?
a. on or near the ground
b. one meter above the ground
C. on weather balloons
d. on satellites
Please select the best answer from the choices provided
A
B
Ο Ο Ο Ο
С
D
Mark this and return
Save and Exit
Next
Submit

Answers

Answer:

A rain gauges are located on the ground

examine the image shown here. These two species shown are pollinators and the flowering plant that they feed upon. Which statements accurately describe the interaction between these two groups?



A)Natural selection put pressures on the pollinator to increase its fitness over generations.

B)Heterozygote advantage provided a mechanism for species to become better fit for within their environment.

C)Convergent evolution caused the proboscis of the pollinator to mechanically fit with the flower of the other species.

D)The pollen of one species increased the mutation rate of the pollinator species so that they were more adapted to their flower.

E)Coevolution provided a mechanism for these two species to put selective pressures on each other to shape the pollinator structures.

Answers

Coevolution refers to the existing relationship between two species, and the selective pressures that each of them imposes on the other. These pressures result in both species evolving together in the same direction.

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

When the interaction between two species is so strengthened that each population exerts a selective strength over the other one, simultaneous adjustments occur, resulting in Coevolution.

Coevolution is the biological relationship existing between two or more species that interact and adapt to each other.

Coevolution is the mechanism by which coadaptation can be explained.

Coadaptation refers to reciprocal genetic changes in species that interact.

This is due to the selective pressures that each of them imposes on the other. Coadaptation is what can be seen or observed.

For coevolution to exist, there must be phenotypic variation and heritability. Coevolution can be specific or diffuse.

Specific or strict coevolution involves two species in interaction in which the evolution of each one responds to selective pressures applied by the other species.

The correct option is E) Coevolution provided a mechanism for these two species to put selective pressures on each other to shape the pollinator structures.

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Answer:

A & E

A.) Natural selection put pressures on the pollinator to increase its fitness over generations.

E.)  Coevolution provided a mechanism for these two species to put selective pressures on each other to shape the pollinator structures.

Explanation:

Spinocerebellar tract axons carry sensory information into the cerebellum by the ________________

Posterior lobe

Inferior cerebellar peduncle

Middle cerebellar peduncle

Superior cerebellar peduncle

Anterior lobe

Answers

Spinocerebellar tract axons carry sensory information into the cerebellum by the inferior cerebellar peduncle. This peduncle contains afferent and efferent tracts of the cerebellum.

The cerebral peduncles are responsible for learning motor skills, refining motor movements, etc.

The inferior cerebellar peduncle (also called the restiform body) is a thick strand that connects the cerebellum to other parts of the nervous system.

This peduncle (inferior cerebellar peduncle) is located ventromedially to the middle cerebellar peduncle.

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Does anyone understand this???

Answers

The farther something is from a light source, the dimmer the light will appear on that surface. This is analogous to the separation between the slinky’s layers

Baby geese following a human is an example of:
Operant conditioning
Trial and error
Imprinting
Insight

Answers

Imprinting is the correct answer

Animals right after birth or hatching engage in a sort of intrinsic learning called imprinting . Baby geese, a human, is an example of imprinting. Therefore, option C is correct.

What is imprinting ?

An animal's imprinting refers to a crucial early stage of its life when it builds attachments and creates a sense of its own identity. Mammals and birds have a pre-programmed urge to imprint on their mothers from birth.

Animals right after birth or hatching engage in a sort of intrinsic learning called imprinting to recognize their caregiver for care, food, and protection. As a result, they can grow behavioral patterns that are unique to their species for socializing, mating, and surviving.

In order to continue its evolutionary survival, the child recognizes its mother through oral tactile memory throughout the imprinting and following latching stages of emotional and neurobehavioral development.

Thus, option C is correct.

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A mutagenic process that alters the chromosome segment by repeating one or more segments is referred to as
Group of answer choices

deletion.

duplication.

crossing over.

substitution.

Answers

Answer:

The answer is duplication

Which of the following are unique to eukaryotic cells? [mark all correct answers] a. DNA b. Nucleus c. Mitochondria d. Rough and smooth endoplasmic reticulum e. Golgi complex

Answers

Answer: B, C, D, E

Explanation: DNA is found in all cells, but nuclei, mitochondria, both types of ER's, and Golgi complexes are only found in eukaryote cells.

The following that is unique to eukaryotic cells are:  Nucleus c. Mitochondria d. Rough and smooth endoplasmic reticulum e. Golgi complex.

What is a eukaryotic cell?

A eukaryotic cell is one in which all cell organelle is present, and it is present in higher plants and animals. It has distinctive organs and functions are also divided.

Thus, the correct option is b. Nucleus c. Mitochondria d. Rough and smooth endoplasmic reticulum e.

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The heart is an example of which level of organization within an organism?
cell
organ
tissue
organ system

Answers

The heart is an example of an organ.

Using spray cans with large concentrations of VOCs has no impact on air quality.

True
False

Answers

Answer:

It is false. It does have an impact on the air because VOC are stuff like perfumes, paint, and scented items with pollution source

Explanation:

also i got it right on the test

You are able to extract mitochondria from the cell and remove the outer membrane. You want to show that the mitochondria can still produce ATP if placed in the right solution. The solution should be isotonic, but at what pH

Answers

Answer:

Low PH

Explanation:

The high external acid concentration causes an increase in H+ in the inter membrane space leading to increased ATP production by ATP synthetase.

Mitochondrial production of ATP requires a concentration gradient of H+, with a high concentration at the inter membrane space and a low concentration in the matrix. The inner membrane is impermeable to H+, but the outer membrane of the mitochondria will allow H+ to pass through. Thus, placing mitochondria in a low pH buffer produces a H+ gradient that can generate ATP through ATP synthetase.

What is the main difference between a child and a teenager?

Answers

Answer:

puberty

Explanation:

Answer:

A child is a kid that is in a learning age. a child might say anything that does not make any sense. However, a teenager must be learned on how to behave. A teen must talk sense able things and not like a kid.

Explanation:

Hoped this helped.

Marking as brainliest!

Answers

Answer:

A) Ionic Compound Formula: LiBr

B) Ionic Compound Formula: MgCl2

Ionic Compound Name: Magnesium Chloride

C) Cation: Cu+2

Anion: F-1

Ionic Compound Name: Copper (II) Flouride

D) Cation: Fe+3

Anion: O-2

Ionic Compound Formula: Fe2O3

Explanation:

I hope these answers help. If there is any that's wrong please tell me.

Heat from the sun travels to earth by what

Answers

Answer:

Heat from the sun travels to earth by Electromagnetic Radiation.

Where do the building materials for cells come from?

Answers

Cells get raw materials- including water, oxygen, minerals and other nutrients from the foods you eat. They let in raw materials through the cell membrane: the thin, elastic structure that forms the border of each cell.

1. What are the three components of a nucleotide (Remember only the nitrogen bases
change between nucleotides). Draw all four nucleotides below:

Answers

Answer:

adenine, cytosine, guanine or thymine

Explanation:

Nucleotides are made up of 3 parts. The first is a distinct nitrogenous base, which is adenine, cytosine, guanine or thymine. In RNA, thymine is replaced by uracil. These nitrogenous bases are either purines or pyrimidines.

please help me what hotspot is it

Answers

Answer: i am not 100% sure what it is, but i think its those gray dots

Explanation:

Answer:

Mitochondria

Explanation:

How does soil affect the surface of the earth

Answers

The type of soil varies from place to place on our planet and can even vary from one place to another in your own backyard. Soil erosion, caused by wind and rain, can change land by wearing down mountains, creating valleys, making rivers appear and disappear.

When neurons/nerves are cut, the cells cannot deliver neurotransmitters. Explain how this may affect the body:

Answers

Answer:

Nerve: When a nerve is cut, both the nerve and the insulation are broken. Injury to a nerve can stop the transmission of signals to and from the brain, preventing muscles from working and causing loss of feeling in the area supplied by that nerve.

Neuron: An injury to a neuron can stop the signals transmitted to and from the brain, causing muscles to not work properly or a loss of feeling in an injured area. Nerve injuries can impact the brain, the spinal cord, and peripheral nerves.

Explanation: hope this helps :)

Carbohydrates and fats both

Answers

Answer:

They are both used for energy

The process of mitosis plays an important role in which of the following? Check all that apply.
cell death
cell replacement
cell regeneration
cell growth and development

Answers

Answer:

2,3,4

Mitosis is the reason we can grow, heal wounds, and replace damaged cells

Answer:

b,c,d

Explanation:

edge

Which of the following was NOT common practice during the Green Revolution? A. using large amounts of manmade fertilizer B. using large amounts of water C. decreased frequency of cropping D. using large amounts of pesticides​

Answers

Decreased frequency of cropping was not a common practice during the

Green Revolution.

The Green revolution occurred between the 1950s and 1960s and involved

the increase in agricultural products through the adoption of various

techniques and mechanisms.

The techniques included using of fertilizer, pesticides and herbicides to clear

weeds and pests for optimal growth. There was also an increase in the

frequency of cropping and not a decrease.

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Superweeds: Due to new genetic engineering technology, scientists have been able to alter the DNA in corn, soybeans, and cotton to make them resistant to the chemical herbicides used to kill weeds. Consequently, millions of acres of United States farmland have been regularly sprayed with herbicides, leading to the development of a herbicide tolerance in weeds. Producers must now use larger amounts of herbicides and find new, stronger chemicals to fight off the herbicide-tolerant weeds.

What was the initial factor that led to the development of herbicide-resistant weeds?

Group of answer choices

artificial selection

spontaneous reproduction

genetic engineering

genetic cloning

Answers

Answer:

Genetic engineering

Explanation:

I NEED HELP FAST, I HAVE 5 MINS TO FINISH THIS. I WILL GIVE BRAINLEST TO WHOEVER IS RIGHT.

The table below compares two types of respiration in animals.
Respiration Types -
Type A:
Water Produced: Yes
Kreb's Cycle Involved: Yes

Type B:
Water Produced: No
Kreb's Cycle Involved: No

Which statement is correct about Type A and Type B respiration?
A. Type A respiration does not produce ATP, but Type B respiration produces ATP.
B. Type A respiration produces ATP, but Type B respiration does not produce ATP.
C. Type A respiration produces lactic acid, but Type B respiration does not produce lactic acid.
D. Type A respiration does not produce lactic acid, but Type B respiration produces lactic acid.

Answers

Answer:

D

Explanation:

A is aerobic respiration

glucose + Oxygen ---> Water + CO2 +32 ATP

Krebs cycle takes place in mitochondrial matrix

ATP is synthesised during glycolysis, krebs cycle and oxidative phosphorylation in electron transport chain

B is anaerobic respiration

Glucose--> lactic acid + 2ATP

Krebs cycle doesn't take place

ATP is synthesised during glycolysis only

Answer:

D

Explanation:

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PLZ HELP I HAVE BEEN STUCK ON THIS AND ITS DUE SOON! HELP ASAP! I NEED THIS NAMED I need help naming Antibodies and Antigens
pls find a image and explain but have at lease 6 of theses and you can use them more then once,
1 heavy chain
2 light chain
3 Variable region
4 constant region
5 Antigen binding site
6 disulfide bridge
7 epitope
(you will get 100 points for helping me out!)

Answers

Answer:

1. Heavy chain is an antibody which consists only of two heavy chains and lacks the two light chains usually found in antibodies.

2. Light chain is the small polypeptide subunit of an antibody (immunoglobulin).

3. Variable region is the ends of the light and heavy chains

4. Constant region is determines the mechanism used to destroy antigen.

5. antigen binding site is the part of an antibody which recognizes an antigen, the antigen-binding site of an antibody.

6. disulfide bridge are formed by the oxidation of 2 thiol groups within Cys residues and in many extracellular proteins.

7. epitope is the specific piece of the antigen to which an antibody binds. The part of an antibody that binds to the epitope is called a paratope.

For each of the following situations, predict
whether the Hardy-Weinberg equilibrium
would be maintained after several generations.
Explain your reasoning.
(a) A population of long-tailed widow birds is
maintained at a local zoo.
(b) A population of birds lives on an isolated
island.
(c) Climate change is melting the polar ice
where polar bears live.
(d) A rat population lives in the subway system
in Toronto.

Answers

In a population of long-tailed widow birds is  maintained at a local zoo. The Hardy-Weinberg equilibrium  would be maintained after several generations if they receive proper care and management at the zoo.

A population of birds lives on an isolated  island, the Hardy-Weinberg equilibrium  would be maintained after several generations due to non-disturbed environment and no human interference.

Climate change is melting the polar ice  where polar bears live, the Hardy-Weinberg equilibrium  would be maintained after several generations if the melting of polar ice can be recovered or the polar bears go to the suitable place.

A rat population lives in the subway system  in Toronto, the Hardy-Weinberg equilibrium  would be maintained after many generations if the rat population gained less predator and more food.

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Si un teléfono fuera un ser vivo que parte sería la célula?

Answers

Answer:

TAL VEZ LOS PIXELES

PLS HELP

Why is DNA found in both the nucleus and in the mitochondria? What is the advantage of
doing this?

Answers

AnswerAll multi-cellular life forms have them. In some organisms the DNA that codes for the mitochondrion has been moved into the nucleus and become part of the DNA of the host cell, but in vertebrates the mitochondria keep their own DNA inside themselves.

Explanation:

Answer:

Mitochondria are found in all eukaryote organisms, unlike prokaryotes. Both nucleus and mitochondria have their own DNA. The DNA of mitochondria is called mitochondrial DNA. The mitochondrial DNA helps in the production of ATP that produces energy whereas the DNA in the nucleus is the genetic material of the cell.

Explanation:

The presence of DNA inside the mitochondria is because of the fact that mitochondria are believed to be a primitive bacterium that was consumed by a eukaryote and became an essential organelle of the eukaryotic cell. Today, mitochondria exist only inside a eukaryotic cell serving as the powerhouse of the cell and containing mitochondrial DNA containing 37 genes. Advantaged of DNA in both nucleus and mitochondria:Advantages of DNA found in mitochondria and nucleus are: 13 genes of mtDNA perform the function of oxidative phosphorylation.Other genes help in the formation of tRNA and ribosomes which helps in efficient protein synthesis and production of ATP.The presence of a high number of mtDNA in the cell helps in producing a great amount of energy for the functioning of the cell.

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I don’t get this can someone help?

Answers

Answer:

It’s mass!

Explanation:

Because we are talking about weight here

if this isn’t correct srryyyy

have a good night :D

Other Questions
What you gonna bring when you go to trip and why? Help me pls Study the diagram of a desert food chain. What would most likely happen if the kangaroo rats were killed off and removed from the food chain?The number of snakes would increase. The number of cactus plants would increase. The number of foxes would be unaffected. The number of cactus plants would be unaffected. ASAP: Write a Summary of the story "The Brave Little Parrot" 50 points if interested!!Passage: Once, long ago, the Buddha was born as a little parrot. One day a storm fell upon his forest home. Lightning flashed, thunder crashed, and a dead tree, struck by lightning, burst into flames. Sparks leapt on the wind and soon the forest was ablaze. Terrified animals ran wildly in every direction, seeking safety from the flames and smoke."Fire! Fire!" cried the little parrot. "To the river!" Flapping his wings, he flung himself out into the fury of the storm and, rising higher, flew towards the safety of the river. But as he flew he could see that many animals were trapped, surrounded by the flames below, with no chance of escape.Suddenly a desperate idea, a way to save them, came to him. He darted to the river, dipped himself in the water, and flew back over the now raging fire. The heat rising up from the burning forest was like the heat of an oven. The thick smoke made breathing almost unbearable. A wall of flames shot up on one side, and then the other. Crackling flames leapt before him. Twisting and turning through the mad maze of fire, the little parrot flew bravely on. At last, when he was over the center of the forest, he shook his wings and released the few drops of water which still clung to his feathers. The tiny drops tumbled down like jewels into the heart of the blaze and vanished with a hissssssssss.Then the little parrot once more flew back through the flames and smoke to the river, dipped himself in the cool water, and flew back again over the burning forest. Back and forth he flew, time and time again, from the river to the forest, from the burning forest to the river. His feathers were charred. His feet were scorched. His lungs ached. His eyes, stung by smoke, turned red as coals. His mind spun dizzily as the spinning sparks. But still the little parrot flew on.At this time, some of the devasgods of a happy realmwere floating overhead in their cloud palaces of ivory and gold. They happened to look down. And they saw the little parrot flying among the flames. They pointed at him with perfect hands. Between mouthfuls of honeyed foods they exclaimed, "Look at that foolish bird! He's trying to put out a raging forest fire with a few sprinkles of water! How absurd!" And they laughed.But one of those gods, strangely moved, changed himself into a golden eagle and flew down, down towards the little parrot's fiery path.The little parrot was just nearing the flames again when the great eagle with eyes like molten gold appeared at his side. "Go back, little bird!" said the eagle in a solemn and majestic voice. "Your task is hopeless! A few drops of water can't put out a forest fire! Cease now and save yourselfbefore it is too late."But the little parrot only continued to fly on through the smoke and flames. He could hear the great eagle flying above him as the heat grew fiercer, calling out, "Stop, foolish little parrot! Save yourself! Save yourself!" What is the place value in the 9 in the decimal 409.5 Read the following description of a play:In a play set during the civil rights era, an African Americanfather and a white father in the same southern town areemployed at a local factory.Which is an example of a plot development that might result from this play'shistorical context?O A. The men's wives become friends through church, forcing them toget to know each other.B. The men's children help them learn to perform their jobs better.O C. The men confront their own prejudices about race when they mustwork togetherD. The men start a business together to employ their formercolleagues. true or false Air pressure is highest at the bottom of a tornado's funnel? what is the estimated body surface area difference between a premature neonate and that of an older child Find the value of x.54if you could explain how you got the answers i would appreciate so i can know how to do it frl 3 You are observing a population of squirrels that have red or black fur. Coat color in these squirrels is determined by one gene with two alleles, where red is dominant to black. In your population, you count 100 squirrels and find 84 red squirrels and 16 black squirrels. What is the frequency of the black fur allele [tex]70 \times 20[/tex]I need help please Help help help help help help discuss the changes that occur in John Proctors character, from the beginning of the play to the end. 12 out of 15 soccer players attended practice. What percentage of soccer players attended practice? How do I figure out the area of a problem with a graph through: -1,4 and 0,0 point slope arol is writing an argumentative essay for his high school paper. Read his claim. Classes should not begin before 9 a.m. Which statements provide the best evidence to support his claim Please explain how to solve this: Which characteristics best describe Aaron Douglass's painting, Song of theTowers?O A. Realistic and detailedO B. Still and peacefulO C. Abstract and geometricO D. Exaggerated and humorous Please, if you can answer this, answer my other similar ones as well. I appreciate any help so much! Find the slope of the line shown below.