Which of the following tools was responsible for advancing our knowledge of cells over the past 400 years?

Answers

Answer 1

Answer: This is life science right? If it is the answer is the microscope

Explanation:

Answer 2
Has to be a microscope Ong

Related Questions

PLEASE ANSWER REVIEW SHEET BELOW!! DUE IN AN HOUR, GIVING OUT BRAINLIEST!!

Answers

Answer:

1. rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius.

2. cant see picc

3. biceps/ triceps?

4.to move bones in opposite directions, pairs of muscles must work in opposition.

5. bicep/ tricep

6. bicep contracts tricep relaxes

7.Both of the muscles need to be equally developed to maintain normal functions.

Explanation:

Which statements always apply to the process of diffusion? Check all that apply.

Molecules move from high concentrations to low concentrations.
Molecules move from inside of the cell to outside of the cell.
Diffusion requires proteins in the cell membrane.
Molecules are evenly distributed at the end.
Diffusion requires energy.

Answers

Answer:

A & D??

Explanation:

Yes, I also agree with the answer being A and D

Asexually produced offspring are genetically
1. identical to the parent
2. different from the parent
3. different from each other
4. formed by two parents

Answers

1. identical to the parent

the answer is 1.) identical to the parent , because when an organism is produced asexually it is a piece of the parent that is separated.

The urinary bladder has to hold and store urine until it is released. What would you predict about the urinary bladder’s structure knowing this about its function?

Answers

Answer:

The bladder's structure is elastic/stretchy in order to expand and decrease for the amount of urine stored.

Yeah he’s right even though I didn’t answer still god bless you!!!

compare the circulatory system of a plant and animal

plz help do not copy off anything because this is a unit test

Answers

Answer:

The circulatory system is the method of transport in plants and animals. Animals must have nutrients and oxygen reach every cell in their body. Plants must have nutrients and carbon dioxide reach every cell in their “body.” Both plants and animals must also have waste products removed from their systems.

Explanation:

You are gonna have to change the wording a little but thats ok! An y'know what? I have the same answer on one of my past test we did like a week ago!

Answer:

In plants, there is a conducting tissue that is located in the veins. Inside, there are xylem cells that conduct water and minerals upward from roots to leaves and phloem that conducts food. Plants have only water solutions flowing through the tubing. Animals can have one of two kinds of circulatory systems: open or closed. In animals, each blood vessel in the network is responsible for transporting nutrients and oxygen to cells and for removing wastes and carbon dioxide from cells.

Explanation:

Which best describes the relationship between chromosomes, genes, and inherited traits?
A Genes and chromosomes both carry DNA that determine inherited traits from parents to offspring.

B Genes are located within chromosomes. Genes determine the passing and expression of inherited traits from parent to offspring.

C Chromosomes are located within genes. Chromosomes determine genetic code for inherited traits from parent to offspring.

D Genes are controlled by chromosomes. Chromosomes create mutations and new genes that are passed from parent to offspring.

Answers

B Genes are located within chromosomes. Genes determine the passing and expression of inherited traits from parent to offspring.

Genes are located within the chromosomes. Genes determine the passing and expression of the inherited traits from parents to the offspring. Thus, the correct option is B.

What are Genes?

Gene is the basic unit of heredity and the molecular gene in the nucleus is a sequence of nucleotides in the form of DNA, which undergoes transcription to produce a functional RNA. The molecular genes are of two types: protein-coding genes and noncoding genes. The protein-coding gene undergoes translation to produce functional proteins from RNA.

Chromosomes are present on the DNA molecule which contain the genes. Genes determine the expression of traits in an organism and are transmitted from the parents to their offspring.


Therefore, the correct option is B.

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How would sound be affected if there was no matter to vibrate?

The sound would have a higher pitch.

The sound would have a lower pitch.

The sound would be louder.

There would be no sound

Answers

Answer:

There will be no sound.

Without vibration sound will not be produced.

no sound i think lol

im guessing i need points lololll

help I need help and fast cuz I gotta turn this in in like 54 minutes

Answers

Answer:

1803: Dalton presented his chemical combination theory

1897: Thomson discovered electrons

1922: Bohr earned the Nobel prize for his work on the structure of atoms

1926: Schrodinger formulated the wave equation

Explanation:

describe and explain experiences/connections from outside of school related to our learning goal: I can use characteristics to organize Bacteria, Archaea, and Eukaryote.

Answers

Answer:

Explanation: An experience I had outside of school related to biology is; I was at the park a long time ago, when i noticed something in the ground, it was a fossil of a bird and it was engraved inside of the concrete.

He is correct

God bless you!!!

STATES OF MATTER 2 usa testprep

Answers

Answer:

Air is a gas

water is a liquid

sand is solid

Definite shape is a solid

No definite shape is a gas

Explanation:

I hope this helps.

A student is analyzing data that compare the change in the total number of wading bird nests in the Everglades to the change in rainfall. Wading birds feed primarily on fish. Fewer nests were observed in dry years than wet years.

What is a reasonable inference about the relationship between wading bird reproductive success and water depth in the Everglades?

Answers

Higher water levels cause more birds

The reasonable inference about the relationship between wading bird reproductive success and water depth in the Everglades is the prey density and the vulnerability of prey to capture.

What is wading bird?

Waders, also known as shorebirds, are birds of the order Charadriiformes that forage for food crawling or burrowing in the mud and sand, typically small arthropods such as aquatic insects or crustaceans.

The sandpipers, snipes, and phalaropes family is a diverse group of waders that includes curlews, godwits, turnstones, sandpipers, woodcock, snipe, and phalaropes.

Shorebirds generally wade in shallow water, while others feed on rocky shores.

Prey availability, which includes both prey density and prey vulnerability to capture, can have a significant impact on wading bird foraging success and habitat preference.

Thus, due to availability of more prey in the wet area, the density of these birds are more in that particular area.

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This is my cat but literally no one in my family knows what type of breed she is, she was always really small and finally started to actually grow about a year ago, her eyes are green also they are really pretty, I think she’s pretty young b/c she tends to have a lot of energy and do more then our old black cat, we had an older cat who looked exactly like her but was way bigger, anyone know how to be able to figure out what kind of breed she is?


(I don’t knowwhat kind of subject this would be- so ima put a random one that has to do with science, sry if it’s the wrong one!)

Answers

Browse Breeds. If you want to try to take a guess at your dog's breed yourself, try to browse some breeds to figure it out. ...

Ask Your Vet. As you probably already know, your veterinarian is a doggy expert! ...

mark as brainliest pls

Answer:

It's bread

Explanation:

BREAD CAT

A group of scientists wanted to investigate how populations of organisms can change over time. They decided to study a population of birds on the Galapagos Islands exposed to extreme conditions of drought.

Which of the following would be the best hypothesis to test how the birds might adapt to these conditions over time?
A.Birds exposed to extreme drought will become less attractive over time.
B.Extreme drought conditions could cause bird species to become extinct.
C.If birds are exposed to extreme drought then their beak size will quickly change overnight.
D.Birds might breed with other species and adapt to these conditions.

Answers

Answer:

I Dont think it would be D. Breeding with other species is possible, but extremely rare. I Think its most likely C, because C shows an adaptation, their beak changing in size. They might be changing so that their beaks are strong enough to break through plants or ground and drink the water from it. There might also be other reasons, that is just my prediction. If it gets too harsh, however, there might not be a way to adapt to it and they may go extinct. But as i said i think it would be C.

I think the answer is either d or b. D because the birds would have to learn to adapt to it making their offspring have features that help them survive. And b because if they do t find out how to survive they will die and eventually become extinct. Making my final answer be b and/or d.

Where do mammals live in the world?

what type of ecosystems do they live in?

What are some of their physical characteristics ?

What are their typical eating habits?

Are they social creatures or do they like to travel alone?

Why are these animals categorised together?

What are their similarities and differences?

Any other interesting facts are welcome!

Thank You!

Answers

Answer:

we are mammals that should help

Explanation:

A girl has her eyes shut and is standing inside a brightly lit room. What happens to her pupils when she opens her eyes? Why?

Answers

Answer:

When you open yours eyes in a brightly lighted area to a dark room (such as a cinema hall), you experience difficulty in seeing objects for a short while slowly, your vision is improved. This improvement is called dark adaptation. This change is due to (a) regeneration of the visual purple (or rhodopsin), the pigment of the rods, which was earlier broken down due to bright light, and (b) dilation of the pupil permitting more light to enter the eyes.

The pupil will constrict. Bright light will contract the muscles of the iris.

What is structure of an eye?

An eye is a spherical structure responsible for vision.

An eye consists of three main layers:

Outer layer: It consists of cornea and sclera. Cornea extends into a membrane like structure called conjunctiva.Middle layer: This layer contains iris, ciliary body and choroid.Inner layer: Consists of retina where an inverted image of the object is formed. The optic nerve carries the visual information to brain.

Two fluids namely aqueous humour and vitreous humour are present which maintain the shape of an eye.

The coloured part of an eye is called iris. It regulates the intensity of the light entering to the eye by controlling the diameter of a pupil (small aperture in the iris).

The lens of an eye is biconvex. It directs the light to the retina.

Therefore, eye is a crucial sensory organ.

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The change in the instruction caused the protein to _________.

-Be incomplete
-No longer exist
-Have the same structure

Answers

Answer:

have the same structure

Explanation:

because if protein is not good how to we get another type of structure

Which structure does a eukaryotic cell have that a prokaryotic does not
A). Ribosome
B). Flagellum
C). Cytoplasm
D). Nucleus

Answers

Answer:

D) Nucleus

Explanation:

answer nucleus

Answer:

I think D maybe

Describe the function of the lungs in the respiratory system

Enter your answer in the space provided

please do not copy off anything because this is a unit test please help me 100 points

Answers

Answer:

Functions of the lungs are:

1) It is the most vital organ in the respiratory system for gaseous exchange in the body.

2)It is the organ which oxygenates the deoxygenated blood from the Pulmonary arteries.

3) The lungs’ main role is to bring in air from the atmosphere and pass oxygen into the bloodstream. From there, it circulates to the rest of the body.

In one or two sentences, compare and contrast the legs of a vertebrate with the legs of an invertebrate.
plssssss no copy and pastes

Answers

Answer:

vertebrate probably has more strength and support while the invertebrate probably has more soft and stuff.

Vertebrates are have well developed and long bones in legs and hands. Whereas, invertebrates have soft short and fragile bones and nerves in legs and hands.

What are vertebrates?

Vertebrata, which means chordates with backbones, is the subphylum of animals that includes all types of animals. The majority of the Chordata, phylum, are vertebrates.

Underneath skin and muscle is where the vertebrate skeleton resides. The brain and spinal cord are enclosed by the skull and vertebral bones, while the heart and other internal organs are shielded by the ribs. The interior core of the legs is made up of long bones.

Exoskeletal material covers almost all exterior features on vertebrates, as well as a few internal ones. These structures include the body, legs, fore and hind digestive tracts, some respiratory surfaces, eyes, mouthparts, antennae, and antennae.

Invertebrates have no vertebral column and are have not developed bones or muscles inside. Insects, mollusks, cnidarians  etc. belongs to this class. Their legs have  no muscle tissues and long vertical bones.

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Were does all the energy start from ALL the organisms

Answers

Answer:

The sun

Explanation:

The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.

Answer:

from sun all the energy starts from All the organisms it is the fact that scientist had proven it

Animals use a variety of behaviors to increase the chance of survival for their offspring. Which also doubles as a territorial behavior?

A. Birds use nests to lay eggs and raise their young before they are ready to fly.

B. Sea turtles lay their eggs in sandy nests to keep them hidden from predators and to regulate their temperature.

C. Koalas and other marsupials carry their young on their bodies as they travel.

D. Bison travel in herds and surround calves when a predator is nearby in order to protect them from any attacks.
IM BRGGINH

Answers

I think it’s b because it says territorial and not how they protect there young’s, b also does say that but it also talks about the territory and how they protect there eggs underneath sand for them to stay hidden so it’s territorial. I thinks at least

What animals are in Washington D.C

Answers

Answer:

240 species of birds, 29 mammals, 21 reptiles, 19 amphibians, and 78 species of fish

Explanation:

Answer:

Mammals · Bats · Beavers · Black bears, black bears multiple languages · Bobcats · Cougars, cougars multiple languages · Coyotes · Deer · Elk ...

Guys help me out ;-; Diana and Kinsey are put in charge of choosing a mascot for their basketball team. There are fifteen players on the team, but Diana and Kinsey survey only the five players on the starting lineup about their favorite mascot.

Which best describes this error in data collection?

A. The data are inadequate.
B. The data are false.
C. The data were recorded incorrectly.
D. The data cannot be reproduced.

Answers

probably a, the data is too less to come to a conclusion
A :) . Also inadequate. good luck and sorry if im late

Mitosis involves ___________. (Check all that apply.)

Group of answer choices


growth


diffusion


reproduction


development


Help please!

Answers

growth and development
all of the above, they are all correct if you understand mitosis

Which of the following fits in all of the missing boxes? HINT: The answer is the same for all boxes which have a question mark.

A.weathering and erosion B.compact and cement C.cooling and hardening D. heat and pressure​

Answers

I think it’s C, cooling and hardening, but I might be wrong. If it’s wrong then I’m sorry.

Answer:

A weathering and erosion.

Explanation:

Because all of them have to be weathering and/or erosion

In which bottles did fermentation occur? How do you know this?

Answers

Answer:

Bottle 2 and bottle 4

Explanation:

Whenever fermentation occurs the liquid experiences natural carbonation in a way. For example if you've ever seen a bottle of kombucha you'll see that it's constantly bubbly and it never stops bubbling. So the production of oxygen inflated the balloons.

In the bottle named as bottle 2 and bottle 4 is showing fermentation, as per the given scenario.

What is fermentation?

Fermentation is an anaerobic chemical process that breaks down molecules like glucose. More specifically, fermentation is the foaming that happens during the creation of wine and beer, a procedure that has been around for at least 10,000 years.

In the absence of oxygen, carbohydrates are broken down by the enzymes of microorganisms during fermentation.

Because they possess distinctive sets of metabolic genes, microorganisms like bacteria and fungus are able to develop enzymes that can break down various kinds of sugar compounds.

Although fermentation can result in a variety of products, the most prevalent ones are ethanol, lactic acid, carbon dioxide, and hydrogen gas.

Commercial applications for these materials include use in food, vitamins, medications, and industrial chemicals.

Thus, in bottle 2 and bottle 4, one can see the inflated balloon which can be an evidence of the fermentation taking place.

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The energy of electromagnetic waves, or _____ energy, can travel through the vacuum of space..

A) heat
B) thermal
C) radiant
D) chemical

Answers

Answer:

I believe it is radiant

Explanation:

Since radiation takes the form of electromagnetic waves (like the Sun's rays for example) it would make sense that radiant energy would be correct.

I hope this helps :)

Is this a scientific model? Use complete sentences to explain why or why not. A map showing the winter outlook for the United States

Answers

Answer:

Technically yes

Explanation:

A model of the motions of the sun, moon and earth (which you participated in last year) A model of predicting eclipses. Models that explain weather phenomena can be used to predict weather.

Why does a food web have two decomposer

Answers

the person above me is right

Answer:

Existe un último nivel en la cadena alimentaria que corresponde a los descomponedores. Estos actúan sobre los organismos muertos, degradan la materia orgánica y la transforman nuevamente en materia inorgánica devolviéndola al suelo (nitratos, nitritos, agua) y a la atmósfera (dióxido de carbono).

Explanation:

What other populations in Washington D.C. might be impacted by the release of wolves?

Answers

Answer:

Gray wolves for the reintroduction will be obtained from healthy Canadian ... wolf population as threatened and other members of the species

Explanation:

Other population in Washington D.C. that might be impacted by the release of wolves is the skunk and rodent population because the wolves will be looking for easy to catch food
Other Questions
Plz help and explain the answer From a creative cinematic viewpoint, why was it better that a production of The Lord of the Rings using human actors rather than simple animation did not take place until the 21st century? The sum of 24 and 3 times a number y is equal to 56 What are some reasons that harsh sentences actually increase the likelihood of future crime? Select all that apply.Criminals may believe the likelihood of getting caught twice for the same crime is remote.The imprisonment binge is simply unsustainable.Punishment may bring defiance.The stigma labels people.Some laws that are neutral on their face can disparately impact minority communities.Truth-in-sentencing laws are a get-tough measure designed to fight a rising crime rate. Which is the best definition to describe a transfer of energy? a)Changing energy from one form to anotherb)The ability to do work and cause changec)Stored energy or energy of positiond)The same form of energy moving from one place to another Mario measured the depth of the river as a function of time and graphed his findings. Use this graph to answer the following question.What is the maximum depth of the river?1 meter22 minutes10 meters9 minutes Which statement correctly demonstrates the relationship between cellular respiration and photosynthesis? A: The ATP produced by all cells during cellular respiration can be used by plant cells to produce water molecules during photosynthes B: The glucose produced by plant cells during photosynthesis can be used by all cells to produce ATP during cellular respiration. C: The oxygen produced by all cells during cellular respiration can be used by plant cells to produce glucose during photosynthesis.D: The water molecules produced by plant cells during photosynthesis can be used by all cells to produce oxygen during cellular O respiration. How is the product of 3 and 2 shown using integer tiles?ABCD Help as soon as possible please if the answer is correct Ill give brainliest It says find the product, then list the units. Please explain how to do this! Best explanation gets brainliest the total amount of power that a star radiates is called its Tes yourself the questions use was or were how much do players get fined for giving away a football What is w(53)is equal to write measure five safety measures can be taken to stay safe in social media the pen or the pencil are fine for the test. is it correct? Demand and supply (economics) Sean has a collection of combs. Each comb is worth $1.29. There are 15 total combs.What is the total value of his collection? Have you and he been buildinga small engine?Can someone please analyze the sentence above please. In order for work to be done, what three things are necessary?