Scientists once thought that life spontaneously arose from nonliving things. It took extensive experimentation and the invention of new technology to confirm the tenets that now make up the cell theory. Now, we don't even question that cells are the basic units of life and only come from preexisting cells. What technology had the biggest impact on the development of the cell theory? (LS.2c)
Question 3 options:


centrifuge


electrophoresis


microscope


telescope

Answers

Answer 1
Answer is microscope
Answer 2
The best answer for this question is microscope

Related Questions

2. Which is probably most responsible for the
formation of this landform? sc.6.E.6.1

wind

water

plants

animals

Answers

According to the given statement wind is probably most responsible for the formation of this landform.

What is Land formations?

The four main categories of landforms are plains, plateaus, hills, and mountains. Landforms include things like rivers, lakes, buttes, canyons, basins, and valleys.

An earthly feature that is a part of the terrain is referred to as a landform. There are four main categories of landforms: mountains, hills, plateaus, and plains. Valleys, buttes, canyons, and basins are examples of minor landforms.

Mountains and hills can be pushed up by the Earth's tectonic plate movement. Valleys and canyons can be formed by erosion brought on by water and wind. The duration of these procedures can reach millions of years.

Underwater mountain ranges and seabed basins are examples of landforms that can exist. In the South Pacific lies the Mariana Trench, the world's deepest landform.

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The technology in the picture produces which energy conversion?
Quo
27
O A. Chemical energy to kinetic energy
O B. Kinetic energy to electrical energy
C. Thermal energy to kinetic energy
D. Light energy to electrical energy

Answers

Answer: B. Kinetic energy to electrical energy

Explanation:

The picture above depicts a hydro-electric power station where flowing water is used to generate electricity. It works by directing water to push against turbines which then turn and generate electricity through a generator connected to the turbines.

It is therefore converting the kinetic (motion) energy of the water to electrical energy that is generated by the generator.

Light energy to electrical energy.


What is the most important part of the cell after the Nucleus?​

Answers

I think its the cell membrane.

Ribosomes it is the Protoss factories of the cell

which of the following structures in a plant cell is responsible for the production of food​

Answers

Answer:

chloroplast

Explanation:

Chloroplasts are specialized organelles found only in plants and some types of algae. These organelles carry out the process of photosynthesis, which turns water, carbon dioxide, and light energy into nutrients from which the plant can obtain energy. There can be over one hundred chloroplasts in certain plant cells.

Chloroplasts are disk-shaped organelles that are surrounded by a double membrane. The outer membrane forms the external surface of the chloroplast and is relatively permeable to small molecules, allowing substances entry into the organelle. The inner membrane lies just beneath the outer membrane and is less permeable to external substances.

Between the outer and inner membrane is a thin intermembrane space that is about 10-20 nanometers wide. The center of the chloroplast that is enclosed by the double membrane is a fluid matrix called the stroma (you can think of this like the cytoplasm of the chloroplast).

Within the stroma, there are many structures called thylakoids, which look like flattened disks. Thylakoids are stacked on top of one another in vascular plants in stacks called grand. Thylakoids have a high concentration of chlorophyll and carotenoids, which are pigments that capture light energy from the sun. The molecule chlorophyll is also what gives plants their green color.

What is the theory which explains how
mammals wound up living in the oceans?
A. They migrated gradually from land.
B. They evolved from fish.
C. Aquatic dinosaurs became present day whales.

Answers

Answer:

B. They evolved from fish

Explanation:

most land dinos couldn't de-evolve into fish so They didn't migrate gradually from land and all Aquatic dinosaurs became extinct

Which of the following is not a step in the mass production of an organic substrate in a fermentor?

Select one:
a. Inoculate the sterile media in the growth vessel with the microbe of interest.
b. Adjust the environmental conditions for optimal growth of the organism.
c. Add enzymes to catalyze all required steps in the process.
d. Harvest cells and purify the product.
e. Remove waste products and dispose responsibly.

Answers

ANSWER :

Which of the following is not a step in the mass production of an organic substrate in a fermentor?

I think E. To remove waste products and dispose responsibly.

------lol--------

Scraping the inside of her cheek with a toothpick, a student was able to collect and view several identical cells on a microscope slide. This suggests the inside of her cheek shows which level of organization?

Select one:

Tissue.

Organ.

Organism.

Organ system.

Answers

Answer:

Tissue

Explanation:

Tissues are made of the same cells that all have the same function.

Experts and above ONLY
To answer this u have to be expert, ace or genius level

25 PTS PLEASE HELP QUICK
(not related to the question but please add thx i want friends)
OK THX THE QUESTION IS BELOW

Answers

Answer:

Honestly I know this is unrelated to the images but I'd like to share with you.

Explanation:

Just have an open mind. (also the first image you put in the question is unable to open)

Plate motion occurs as a consequence of convection in Earth's
crust
mantle
core

Answers

The movement of these tectonic plates is most likely caused by convection currents in the molten rock beneath the crust of the Earth. The immediate consequences of this tectonic shift are earthquakes and volcanic eruptions.

What effect does this plate movement have?

Mountains will grow where plates converge or push together, and continents will split and oceans will form when plates pull apart or diverge. The Earth's geography has changed significantly over the span of millions of years as a result of the continents passively drifting with the plates.

What causes the mantle's plates to move?

The plates fit tightly against one another and lie on the heated, molten rock of the Earth's mantle like fragments of a split shell.

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Regarding living organisms, what is the most distinctive characteristic of a habitat?

Answers

Answer:

They refer to one species or individual.

Reproduction  of same specie is the most  distinctive  characteristic  of a habitat

Reproduction  is the ability of an organism to produce offsprings of its  same kind of which when that offspring grows and mature produces  newer offspring in turn.  Other characteristics such as Movement , Respiration, Nutrition, irritability, Growth,Excretion,Death can be experienced by all living things in thier spoecific ways. The only distinctive characteristic is Reproduction because every habitat will contain specific type of organism that will have features to adapt to that habitat.

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6. Use your understanding of the Big Idea to explain which cell below converts the most
food into energy and why. Justify your answer.

Answers

Answer:

cell B

Explanation:

it has more mitochondria therefore more metabolism

Bunnies: Black fur is dominant to white fur. Use the letter “B” and “b” to answer the following questions.

6. Complete the punnet square to show the possible offspring of a true-breeding black rabbit and a true-breeding white rabbit. (true breeding parents are homozygous, know this for the test!)

7. What ratio would you see in the F1 genotypes?





8. What ratio would you see in the F1 phenotypes?



9. If you crossed two of these offspring, what would this generation be called?



10. Cross two offspring from the F1 generation. (Complete your Punnett square on scratch paper)

a. genotypes:

b. phenotypes:

Answers

Answer:

they are all 100% heterogenous ,,their genotype is Bb,, their prototype is black fur

Explanation:

look at my demonstration

[0.01]Ethan began making a model to show the processes which resulted in the formation of oceans.
Sea floor
spreading
Earth's
plates meet
?
Which of the following would be the next step in the process?
Crust is broken down
Earth's crust moves
O Earth's plates meet
O sea floor spreading

20 Points plz help

Answers

Earth place meets I think?????

In primary mutant screens, A) mutant flies are identified by morphology and then the mutant genes are isolated and studied. B) mutant flies are created by RNAi using random RNA sequences and then the genes affected identified. C) mutant flies are created by gain-of-function expression of random genes. D) two mutant flies are mated to determine if there is an effect on morphology.

Answers

Answer:

A) mutant flies are identified by morphology and then the mutant genes are isolated and studied.

Explanation:

The visualization of mutant flies is done with an experiment, where drosophila flies, also known as fruit flies, are captured and placed in closed bottles. The bottles have a mixture of banana and agar so that the flies can feed for a period of 15 days. During these 15 days, the flies made several crosses and over time, it will be possible to identify the appearance of mutant flies as a result of the number of crosses made inside the bottle. The mutant flies will be identified when the researcher is able to observe flies with legs, eyes and wings in different numbers than what is presented in a normal fly.

After being identified by their different morphology, the mutant flies will have their mutant genes isolated and studied.

What makes the phenomenon of moon phases difficult to see or imagine?

Answers

Answer:

Lunar Phases.

Explanation:

Lunar phases are created by changing angles of the earth, the moon, and the sun, as the moon orbits the earth.

Can a person have DID (Dissociative Identity Disorder) and BPD (Borderline Personality Disorder) at the same time?

Answers

Answer:

Yes, it is possible for a person to have both DID and BPD at the same time. According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), a person can be diagnosed with both disorders if they meet the criteria for both.

Explanation:

The state of a medium helps determine the speed of sound passing through medium

Answers

True. The speed at which sound travels through a medium is determined by the properties of that medium.

What do you mean by sound?

Sound is a type of energy made by vibrations that travel through the air or another medium, like water. It is sensed by our ears and interpreted by our brains. Sound is made up of waves that have different frequencies, which determine the pitch and loudness of a sound.

Factors such as temperature, pressure, composition, and density can all affect the speed of sound in the medium. For example, sound travels faster through warmer air than through colder air, and faster through denser materials than through less dense materials.

Hence, the statement is True.

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Complete question:

The state of a medium helps determine the speed of sound passing through medium.

State True or False.

Can someone help me with this

Answers

6.The signal strength, or "loudness," of a signal over time at different frequencies contained in a specific waveform is visually represented in a spectrogram.

What purpose does a spectrogram serve?

The signal strength, or "loudness," of a signal over time at different frequencies contained in a specific waveform is represented visually in a spectrogram. One can observe how energy levels change over time in addition to determining whether there is more or less energy, for instance, at 2 Hz vs. 10 Hz.

How should a spectrogram be read?

The vertical axis or y-axis of the spectrogram view shows frequency in Hertz, the horizontal axis or x-axis denotes time (exactly like in the waveform display), and brightness denotes amplitude. The sine wave is represented by the bright orange curve while the background is black, which represents silence.

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What does the area beneath a velocity-time graph represent?


The average speed

The average velocity

The distance travelled

Answers

The average velocity

Why does the moon appear differently thoughout the month?
A. The light generated from the moon turns on and off throughout the month.
B. The moon is orbiting the earth over the month and our view of the sunlit side changes.
C. The moon is orbiting the sun and our view of the sunlit side changes throughout the month.
D. The light reflected from the Earth's lights at different angles cause us to see it differently

Answers

Answer:

The moon moves through space in two ways: It revolves around Earth and also rotates on its own axis. The moon rotates once on its axis in the same time that it takes to revolve once around Earth. The changing relative positions of the moon, Earth, and sun cause the phases of the moon.

Explanation:

B.

Answer:

The moon moves through space in two ways: It revolves around Earth and also rotates on its own axis. The moon rotates once on its axis in the same time that it takes to revolve once around Earth. The changing relative positions of the moon, Earth, and sun cause the phases of the moon.

give that guy brainlyest l^l^l

Explanation:

ATP is used by the
a.muscles
b.entire body
c.organs

Answers

Answer:

a.muscles

Explanation:

ATP is used in the muscles

Which of the following events would decrease competition for resources in an ecosystem?
A- a fire has killed off a portion of the vegetation
B- a drought reduces the amount of water available to an ecosystem
C- a disease reduces the population of rabbits in a grassland area
D- many offspring are produced in a single year

Answers

Answer:

C. A disease reduces the population of rabbits in a grassland area

Explanation:

If a disease reduces the size of a rabbit population, there will be a decreased amount of competition for resources.

Less rabbits means that there will be less competition, since there will be more food available.

For example, there would be less competition in a rabbit population of 10 rabbits compared to one of 20 rabbits. This is because there are less rabbits competing for food.

So, the correct answer is C. A disease reduces the population of rabbits in a grassland area

The events that would bring decrease competition for resources in an ecosystem is C. A disease reduces the population of rabbits in a grassland area.

What is an an ecosystem?

An ecosystem  can be regarded as geographic area, consisting of  organism as well as weather.

There is usually competition in an eco system for food and other resources however, disease can reduces the population which in turn reduces completion.

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JUUKCRD Runcud ligule liidulu yet
Juryapuddle
gaphakathi. Atholakala emadolobheni nasemakhaya okwenza sonke sithi
ambili ngenxanxathela yezitolo phambili". Asingayishiyi eyamathuba emisebenzi
lelwa bona abangomakhelwane ukuze bangagibeli kumoseke imali. Aphephile
anzekile, asiwagcine enjalo.
Umsebenzi Owenziwa Ngemva Kokufunda
Fundisisa imibuzo uthole ulwazi, uhlolisise, uncome, uqhathanise uze uthole
izimpendulo ezifanele.
Imibuzo
ke niphendule le mibuzo sizwe!
Okunjani lokhu okulandelayo:
Udukathole
Undabamlonyeni
• Udedangendlale Ugedisizungu
Ujikanelanga
• Inxanxathela
• Isiminyaminya
Esinedolo
e​

Answers

Answer:

jakulin mo Ako or yung titi mo

Describe the process of spermatogensis

Answers

Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. This process starts with the mitotic division of the stem cells located close to the basement membrane of the tubules.

Question 2 (1 point)
Which particle has the electric field point Away from the particle?
3
Proton
Neutron
Electron
Megatron

Answers

Hey did you ever find out the answer because I'm really stuck.

WILL GOVE BRAINLIEST

Canyons, sinkholes, and caves are all landforms that are directly formed by which process? (HINT: In all three landforms, sediments have been carried away.)

A.) erosion
B.) deposition
C.) mechanical weathering
D.) chemical weathering

Answers

Answer A erosion

Explanation: erosion is where water floods land to form mountains, streams, and lakes

Answer:

They are all formed by erosion. Erosion can move sediment through water, ice, or wind. They are all eroded away. A.) Erosion

Hope this Helps!

17. If most other species on Earth aren't monogamous, why are humans expected to be?

Answers

Many species are. Specifically, those species in which the male invests a significant amount of energy and time in providing for the offspring (rather than just fertilizing the female’s eggs and leaving). Humans definitely fall into the category. However, humans (like other monogamous animals) display what is called a “mixed strategy,” whereby each member of the pair tries to monopolize the parental investment of the other parent (to improve the chances for survival of their own offspring) while also remaining alert to (for males) sexual/reproductive opportunities with other females, or (for females) the chance to get resources (in the form of food, protection, etc.) from other males.

Of course, human cultural developments over thousands of years have shaped many variations on this basic theme. But the basic underlying logic remains the same. As evolutionary biologist Lynne Saxon put it, “monogamy is a compromise in which the winners are the offspring.”

That said, monogamy is by no means the rule across our entire species. In fact, a majority of societies around the world at least ALLOW men to have more than one wife. (A few allow women to have more than one husband.) The societies that allow for polygamy tend to be smaller than the ones where monogamy is the ideal, leading to a mistaken impression that our whole species is monogamous. But in fact, humans have devised a number of different sexual/reproductive strategies, across different cultural settings. Often it’s monogamy, for the simple reason that monogamy usually gives children the best chance of survival.
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Related questions (More answers below)

Explain the suns role in generating ocean currents

Answers

Answer:

sun and then river fresh water changes salt concentration in the ocean which contributes to currents

Explanation:

sun evaporates some ocean water

this increases water salt concentration

then when

river fresh water comes in the ocean

salt concentration in water changes

this contributes to ocean currents

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Based on the discussion in your text, which of the following strategies would effectively
reduce prejudice between groups?

Answers

Are there possible answers to this question bc if not then I don’t know what you discussed in class so I can’t help you

Researchers determine the population of phytoplankton in an area of the ocean is significantly decreased compared
to the previous year. What can they conclude from this observation? (1 point)
The plankton as a carbon sink will be less than expected, but the plankton as a carbon source will
be greater than expected.
The plankton as a carbon sink and as a carbon source in the area will be less than expected.
The plankton as a carbon sink will be greater than expected, but the plankton as a carbon source
will be less than expected.
O The plankton as a carbon sink and as a carbon source in the area will be greater than expected.

Answers

This information might be used to draw the conclusion that there will be fewer plankton in the region than is typical both as a carbon source and sink, hence B is the appropriate response to this question.

What is phytoplankton?

The kind of organisms that live in watery habitats are known as phytoplankton.

These species are autotrophic in nature and are the producers of this ecosystem. These creatures share a characteristic with terrestrial plants in that they both contain chlorophyll.

Therefore, if the phytoplankton population falls in the coming year, it means that the region's carbon supply and sink will be less than anticipated.

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lbert uses FedEx in a scheme to defraud Global Sales Company by obtaining merchandise to which he is not entitled. -Found guilty of mail fraud, Elbert can be punished by jumprisonment for up to fifty years. b. imprisonment for up to twenty years and/or fines. Pages c. fines up to $5 million, d. none of the choices. What was the goal of this revolution that took place in China from 1966-1976 Which expression results in a rational number? What volume of oxygen is needed to completely react with 171.9 g of S8 at STP?S8(s) +1202(g) 8S03(1)All chan answer to this please A jar contains 6 blue gumballs, 4 yellow gumballs, and 8 red gumballs. What is the probability of choosing a yellow gumball and then a red gumball if the first gumball is placed back into the jar before the second is chosen? Ques below: please answer that Which element should be provided in an introduction paragraph? 2. In the context of the passage, what is fair? How were the accusations made against the Scottsboro Boys an example of a flawed criminal justice system, and the overall unfair treatment of African Americans? What steps have been taken to ensure that the criminal justice system is fair? Cite evidence from this text, your own experience, and other literature, art, or history in your answer. SelectWhich of the following are examples of how the three branches of government employ a system of checks and balances? - The Supreme Court has the authority to review and declare laws passed by congress unconstitutional. -Congress has the power to order the military to ignore a presidential order.-The president has the authority to nominate Supreme Court justices but they must be approved by senate. -The president can veto laws passed by Congress that he or she feels are not in the best interest of the nation. An ice cream store offers waffle cones or sugar cones. Each is equally likely to be chosen. Which of the following models could be used to simulate this situation?(HINT: Choose the model with the same number of possible outcomes as cone choices.)Group of answer choicesA rolling a 6-sided number cubeB spinning a spinner with 3 equal sectionsC flipping a coinD using a random number generator that generates numbers 1 through 9 What were Lincolns thoughts about slavery when he became President?He would keep slavery in place if it meant saving the Union.He wanted to end slavery, regardless of how it might affect the Union.He feared that freeing the slaves would cause some states in the North to secede.Despite enormous political pressure, he never changed his mind about slavery. One limitation of the Query Designer is that you can't use it for. A) multiple-table queries. B) certain types of complex queries. C) action queries HELP HELP HELP HELP HELP What happens when governments control or dominate a national economy? Describe what everyday life would have in the time of the Ancient Egyptian society been like a Priest? Which stage of the product life cycle requires marketers to pay particular attention to the distribution of their product Max Planck and Albert Einstein developed the idea that light is energy radiated at the speed of light in the form of wave packets of energycalled. A. high energy wavesB. electromagnetic wavesC. photonsD. clusters Troy walked 85 meters. Rico walked 29 meters.How much farther did Troy walk than Rico? What artist created this work of art? Explain (in detail), how it was created.