Pasteur used tipped and untipped sterilized S-shaped flaks of broth in an attempt to​

Answers

Answer 1

Answer:

Show that life can only come from life (rather than spontaneous generation)

Explanation:

Pasteur boiled a broth in a flask with an S-shaped neck. Thebend in the neck prevented particles from the air reaching the broth, but still allowed air to get in.  No bacteria grew in the flask.  

When the flask neck was broken so that particles could get inside, the broth became cloudy, showing that microorganisms were only able to grow from other living things from the outside, and not spontaneously from nothing


Related Questions

In a particular organism, scientists notice that cells are dying at a higher rate than normal. Upon further examination, they find that these cells die after they became filled with large lipids and protein of many different sizes. what do you predict is the reason for the cells death apex

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Answer: lysosomes are malfunctioning so molecules targeted for destruction are not being removed.

Summarize how a single change at cellular level can impact the entire body

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Answer: A single change at a cellular level can change the way our entire body reacts, functions, and develops. Maintaining homeostasis is vital for our bodies to preform its necessary functions, without constant balance our bodies are unable to properly preform consequently, resulting in sickness and even death.

Explanation:

I used my biology book.

The body has different levels of organization based on structures and functions. The cellular level is the smallest and the basic level of the organization that consists of cells that are capable of division.

A single change at a cellular level can impact the entire body as:

Cellular levels consist of cells of different shapes, sizes and functions. Similar cells make up the tissue to perform functions.

A single change can alter the homeostasis of the cell and can bring about a larger impact on the body organization as maintenance of temperature is very important for the living process.

The whole body depends upon the cells for instructions of the growth, functioning, signalling and transportation.

Therefore, a single change at the cellular level can alter the entire body.

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2. What are 3 examples of lipids and what functions do they serve in organisms' bodies?

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Answer:

Examples of lipids include fats, oils, waxes, certain vitamins

The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.

Which labels would correctly model photosynthesis?

Answers

Answer:

A. Carbon dioxide

B. Light energy

C. Oxygen

D. Glucose

E. Water

Explanation:

The  model for photosynthesis is the sun in the form of solar energy where the carbon dioxide along with gets formed in  the leaves where it is kitchen  of the leaves along with the carbon dioxide gets removed out.

What is the primary source of energy ?

The primary source of energy is the sun which will help in the production of biomass.

A. Carbon dioxide

B. Solar energy

C. Oxygen

D. Stomata

The photosynthesis is the unit where the solar energy is the producers energy used by the producers. Carbon dioxide is the gas that is the used to the plants that is synthesizing plants food.

Leaves have the stomata where the food is being synthesized  where the chlorophyll containing pigment is helpful in making where the food is being synthesized.

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How does the Golgi Body and Plasma membrane work together ?

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Answer/Explanation:

The Golgi body is a system of flattened sacs that is involved in the packaging, modification, and transport of proteins. It is particularly important for proteins that have to be transported outside of the cell.

Proteins from the Golgi that are to leave the cell are transported in vesicles. When they reach the membrane, the vesicles fuse with it and release the proteins outside of the cell

Why are there fewer tuskless elephants born after the war (ages 10-20 years old)?

Answers

Evolution of the elephants

Elephant tusks are either present or absent due to genetics, specifically the existence of key genes that regulate tusk growth. Environmental elements, however, can also affect the proportion of tuskless elephants in a population.

Elephants are frequently hunted down during conflicts or wars for their ivory tusks, which are highly sought-after on the illicit market. Over time, the population of elephants with tusks may decline as a result of this selective hunting of those with them.

The age range of 10 to 20 years old is essential because it coincides with the period of time when elephants usually begin to grow their tusks. Around the age of 6 to 8 years, young elephants may start developing their tusks, and by the time they are 10 to 20 years old, their tusks should typically be more noticeable and developed.

It is possible that many young elephants with developing tusks will be killed if a conflict or a period of rampant poaching takes place during this crucial time, which will reduce the number of tusked elephants in the population. After such a conflict or a period of heavy poaching, there can be a larger percentage of tuskless elephants between the ages of 10 and 20.

This theory makes the assumption that there was greater poaching or selective hunting occurring during the conflict, which would have a disproportionately negative effect on elephants with tusks. In order to provide a more comprehensive knowledge of the issue, additional examination of local conditions and data would be required. The individual situations and variables affecting elephant populations can differ.

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Which concept is not a part of the theory of evolution?
A. Present-day species developed from earlier species.
B. Some species die out when environmental changes occur.
C. Complex organisms develop from simple organisms over time.
D. Change occurs according to the needs of an individual organism to survive.

Answers

Answer:

D. Change occurs according to the needs of an individual organism to survive.

Which component of nerve cells contains the nucleus? (1 point)

dendrite

axon

neuron

cell body

Answers

Answer:
The answer is the cell body

Explanation:
The nucleus is the main control center, and the cell body is very gooey on the inside so the cell wants to protect the nucleus so we can live.

The nucleus is present in the cell body.

Nerve cell:

Nerve cell is a basic unit of communication. Each nerve cell contains axon, cell body, dendrites and terminal branches. There are about 85 to 200 billion neurons present.

Neurons are surrounded by a cell membrane.Neurons have a nucleus that contains a gene.It also have cytoplasm, mitochondria and other cell organelle.

Neurons are of different types:

Unipolar neuronBipolar neuronMultipolar neuron

Neurons are the chemical messenger. They contain nucleus which contain genetic material. Mitochondria produces energy. Neurons contain specialized structures and chemicals. They contain some specialized structures (synapse) and chemicals called neurotransmitter.

Therefore, The nucleus is present in the cell body.

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The concentration of urea in g per 100 cm3 in part A is 0.03, and in part C is 2.00.
How many times more concentrated is the urea in part C compared with part A?

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0.03/2.00 its very easy

The movement of ocean currents around the globe? Check all that apply. Strong winds force warm water to sink to the ocean floor. The Coriolis effect causes warm and cold water to mix. Cool dense water sinks to the ocean floor. Warm water replaces cool surface water. Wind blowing parallel to the shore causes upwelling of cool water.

Answers

Answer:

Explanation:

3,4,5

Answer:

3,4 and five

Explanation:

The chemical reaction equation of photosyntesis is shown here:
6CO2 + 6H2O → C6H12O6

What information is not given in this equation.

A)It does not show if the reaction is reversible or not reversible.

B)It does not show the reactants needed for the reaction.

C)It does not show that photosynthesis consists of many separate steps.

D)It does not show the number of molecules required to produce glucose.

Answers

Answer:

C

Explanation:

C appears to be the best answer but I think a better answer would be that it didn't include another product which is oxygen. So unless it is late and my brain is not function, I would say that should be the answer. But otherwise, since it is not there, C is the best one I think.

The chemical reaction equation of photosynthesis is shown here:

6CO2 + 6H2O → C6H12O6, C)It does not show that photosynthesis consists of many separate steps. Thus option "C" is correct.

What is photosynthesis?

The chemical reaction of photosynthesis is given as follows;

6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)

Therefore, six molecules of gaseous carbon dioxide (CO₂) combine with six molecules of liquid water (H₂O) in the presence of energy from Sunlight  to produce  one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)

The 6O₂ is the gaseous oxygen produced as a byproduct of photosynthesis

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By which process does the blue ink spread through the jelly?

Answers

Answer:

Diffusion

Explanation:

Diffusion is the process through which the ink is dissolved into the water. It plays an important role in transferring of the solution from area of low concentration to the higher concentration.

What groups of organisms are most in danger of extinction?

A. Those with small population
B. Those that migrate or need special habitats
C. Those with large populations that breed quickly
D. Both a and b

Answers

Explanation:

D.Both a and B

As organisms with small population and those who migrate and need special habitat are most in danger of extinction.

The group of organisms that are in danger of extinction is those that have small populations and those that migrate or need special habits. So the correct option is D.

What is the extinction of species?

In biology, extinction refers to the extinction or death of a species. Extinction happens when a species' numbers are reduced due to evolutionary changes in its members, such as genetic inbreeding, poor reproduction, and population decline, or due to environmental factors like habitat fragmentation, climate change, natural disasters, and overexploitation of the species for human use.

The majority of species that have ever existed on Earth have gone extinct, but the fossil record indicates five very significant extinctions, known as mass extinction events, each of which resulted in the extinction of enormous numbers of species. The bulk of extinctions, which happen continuously and are described as background extinctions, are separated from these glaring decreases in the variety by the term "mass extinction."

Therefore, the correct option is D.

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Dr. Kettlewelll predicted that clean forests would have _____________ colored moths, and polluted forests would have _________ colored moths.

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Answer:

Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.

Dr. Kettlewall predicted that clean forests would have light-colored moths and polluted forests would have dark-colored moths. This is an example of natural selection.

What is natural selection?

Natural selection is a phenomenon in which the fittest individual is chosen by nature. The animal can live and reproduce in that particular environment. An example is the peppered moth population.

The light-colored moths were found on the light-coloured bark, but their population started to decline after the pollution. In the polluted environment, they were easily chosen by predators. So only dark moths survived because they blended in with the polluted environment.

Following the end of the pollution, light colored moth increased again. Predators had a difficult time identifying the light moth because it blended in with the unpolluted environment. Hence, their population increases in unpolluted areas.

Hence, Dr. Kettlewall predicted that a clean forest would have a light-colored moth and a polluted forest would have a dark-colored moth.

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Most mammal cells divide at a rate of

Answers

Mammals have a slow rate of division that is between 12 and 24 hours. These cellular divisions are asynchronous. Zygotic transcription starts at the two-, four-, or eight-cell stage. Cleavage is holoblastic and rotational.

Please answer this.. please

Answers

Answer:

10.8 amu

Explanation:

11 * 0.80 = 8.8 (11 represents ion, 0.80 represents %)

10 * 0.20 = 2 (10 represents ion, 0.20 represents %)

8.8 + 2 = 10.8 amu

Which pair of properties apply to both mechanical and electromagnetic waves?

A.
Both waves carry energy and refract

B.
Both waves are longitudinal and refract

C.
Both waves are transverse and carry matter from one place to another

D.
Both waves carry energy and do not need a medium to travel through

Answers

Answer:

A. Both waves carry energy and refract

Explanation:

There are two major types of waves viz; mechanical waves and electromagnetic eaves. Mechanical waves such as sound waves are waves that require a medium or matter to pass/travel through while electromagnetic waves like light waves do not strictly require a medium to travel i.e through vacuum.

Electromagnetic waves are transverse waves i.e their particles move perpendicularly to the direction of the wave while mechanical waves can either be transverse or longitudinal. All waves carry energy from one medium to another and are capable of refraction i.e. change of direction.

Therefore, both mechanical and electromagnetic waves carry energy and refract.

what transport moves ions?
- diffusion
- facilitated diffusion
- osmosis
- molecular pumps
- endocytosis
- exocytosis

Answers

Answer:

a facilitated diffusion

Sorry If I'm wrong

Facilitated diffusion

The fish in the first bowl couldn't have baby after baby after baby forever. The bowl filled up with fish and many fish died. A bowl this size can only keep three fish alive. What is it called when an area/home/ecosystem has a limit to the number of living things that can live there?

Answers

Answer: Carrying capacity

Explanation:

The carrying capacity can be defined as the ability of an ecosystem to sustain a particular number of members of the population of species in terms of availing resources for survival.

According to the given situation, the fish bowl is an ecosystem which can only sustain a particular number of fishes. Thus, the increase in the population of baby fishes was not supported by the fish bowl.

please helpppppp meeee

Answers

Answer:

what happened my friend is everything fine well 1 + 1 equals 2 got it?

Lolhow am I supposed to help there is nothing there

What would happen if the enzyme used for cellular respiration or photosynthesis to break after a few cycle? Why?

Answers

Answer:

Please mark as brainliest!!!

Explanation:

Cells face a related problem when they break down fuels, such as glucose, to produce ATP. If the cell’s supply of ATP is low, it would do well to break down glucose as quickly as possible, replenishing the ATP it needs to “keep the lights on.” If the supply of ATP is high, on the other hand, it might not be such a good idea to oxidize glucose at top speed. ATP is an unstable molecule, and if it sits around in the cell too long, it’s likely to spontaneously hydrolyze back to ADP. This is like the case of the melted ice cream sandwich: the cell has spent glucose to make ATP, and that ATP ends up going to waste.

It’s important for a cell to carefully match the activity of its fuel breakdown (pathways to its energy needs at a given moment. Here, we'll see how cells turn cellular respiration pathways “up” or “down” in response to ATP levels and other metabolic signals.

PLEASE HELP WILL MARK BRAIN


(ANSWER APPROPRIATELY)

Answers

Answer: If a land fertilizer were used on the algae it would severely damage the plant and suffocate it.

Explanation: Fertilizers are used by homeowners to maintain and improve landscape beauty and quality. In recent years, increased use of home lawn and garden fertilizers has caused concern about pollution of lakes and groundwater. Proper fertilizer application can enhance plant growth without polluting the environment. Yet, misuse of fertilizer may not only harm the environment—especially ground and surface water—but may in fact result in injury to landscape plants as well. The nutrient phosphorus harms clear, free water by creating algal blooms. This process, known as eutrophication, turns the water green, clouds the water, causes odor problems, and depletes the oxygen for fish and other species, effectively suffocating them.

Answer:

Well knowing that most fertilizers help algae grow, my prediction is that the algae expectantly grow at a high rate. The rain would also help the growth and might even get the algae in the water systems.

Explanation:

5. What bone does not join with any other bone and is part of the axial skeleton?

Answers

Answer:

Hyoid bone

Explanation:

Although it is not found in the skull, the hyoid bone is considered a component of the axial skeleton. The hyoid bone lies below the mandible in the front of the neck.

Answer:

The hyoid Bone

Explanation:

Although it is not found in the skull, the hyoid bone is considered a component of the axial skeleton.

In this phase the chromosones begein to un coil and form chromatin?
a. Telophase
b. Metaphase
c. Prophase
d. Anaphase​

Answers

Answer:telophase

Explanation:

Telopahse is the last phase of mitosis. The chromosomes uncoil then a membrane forms around them and the one cell splits into two cells.

Animals and plants that are unable to adapt to their environment will become

A- Prey
B- A new species
C- Extinct
D- Hungry

I think A or C

Answers

Explanation:

It really depends on how the question is phrased. Animals and plants that are unable to adapt to their enviroment will become- Hold it right there. How long will they be unadaptable? Is this forever? If so then yes, they will definately become extinct. If this is for a short amount of time then no, they will become prey, but there is also the fact that yes, they will become hungry. Because if they are not adapted then how are they gonna know the best sports for grub? Same thing for plants, if they can't adapt to the climate, they cannot produce food for themselves. Basically, if its a simple question then forget about everything else. It's Prey, because animals that can't adapt to their enviroment are immedietly in danger. Now if this question has more to it then I would go for C. But overall Just go with prey for now.

why is it important to understand the breakdown of water into its ions before learning about acidity

Answers

Acids and bases are important in living things because most enzymes can do their job only at a certain level of acidity. Cells secrete acids and bases to maintain the proper pH for enzymes to work. For example, every time you digest food, acids and bases are at work in your digestive system.

A statement of fact meant to explain an action or set of actions about nature .

A. Laws
B. Hypothesis ​

Answers

Answer:

A. Laws

Explanation:

Answer:

Laws

Explanation:

A hypothesis is a guess based off of background knowledge while laws are strictly facts.

enzyme activity can be affected by the following check all that apply

Answers

Answer:

enzyme activity is affected by many factors such as temperature, concentration and ph  note that enzymes work best within a certain ph ranges

Explanation:

Which of the following best describes the relationship between the shape of enzymes and the reactions they catalyze? (5 points)

Group of answer choices

The shape of an enzyme depends on the reaction that it needs to catalyze.

Enzymes with more active sites can catalyze several reactions at once.

The shape of an enzyme determines which reaction it can catalyze.

Enzymes change shape after they catalyze a reaction and become waste products.

Answers

Answer:

The shape of an enzyme determines which reaction it can catalyze.

Explanation:

Enzymes are regenerated at the end of the reaction.

Please help(due today)

Answers

Answer:

I would say A

Explanation:

it makes the most sense to me sorry if im wrong.

The answer would be A
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Ms. Chang fills gum and trinket machines in front of grocery stores. In the trinket machine, there are two types of trinkets: lockets and stickers. If Ms. Chang puts 15 lockets and 25 stickers in an empty machine, what is the ratio of stickers to all the trinkets in the machine? How much is 200 tens Can you guys help me with this angle problem for Geometry tysm 15= 3x15 what is x? What is the right answer? please answer....writing assignment for math Plsss helppppssssss me :< and explain thatttttt One car rental company charges $30 per day plus $0.25 per mile driven. A second company charges $40 per day plus $0.10 per mile driven. What is the minimum number of miles you must drive a one-day rental at the second company to be less expensive than the same rental at the first company? The group in the Roman government responsible for interpreting laws and judging cases was calledthe consul,C. the Assembly of Centuriesb.the praetorsd. the Senatea.Please select the best answer from the choices providedAB what do you feel after realizing that you have an important role in your family and in your community please help! i have no clue what i am looking at. ASAP PLEASE!Stomata are tiny openings found in plant leaves. Specialized cells known as guard cells surround the stomata and open and close the openings. When it is very hot, plants may close their stomata to prevent water loss. When plants close their stomata, what else is affected?Group of answer choicesPlants cannot take in water from the air.Plants cannot release glucose made in photosynthesis.Plants cannot take in the carbon dioxide they need for photosynthesis.Plants cannot take in the sunlight they need for photosynthesis. What was one of the main reasons American colonists rebelled againstthe British? Explain the differences between the structures of wind and insect pollinated plants and adjust the mark scheme. I need help on math What statements are true in the story? How did Spainseecolonizing and conversion? *DifferentSeparateA unified effortFirst come, first served La peiota de futbol es ____ la peiota de tenis y ____ que la peiota de bsquetbol A. Mas grande que menos pequea que B. Menos grande que mas pequea queC. Mas grande que mas pequea queD. Mas pequea que mas grande que Silver Enterprises has acquired All Gold Mining in a merger transaction. The following balance sheets represent the premerger book values for both firms: Silver Enterprises Current assets $ 10,000 Current liabilities $ 7,840 Other assets 3,100 Long-term debt 5,110 Net fixed assets 17,300 Equity 17,450 Total $ 30,400 Total $ 30,400 All Gold Mining Current assets $ 2,920 Current liabilities $ 2,620 Other assets 1,380 Long-term debt 0 Net fixed assets 6,110 Equity 7,790 Total $ 10,410 Total $ 10,410 Construct the balance sheet for the new corporation if the merger is treated as a purchase for accounting purposes. The market value of All Gold Mining's fixed assets is $7,510; the market values for current and other assets are the same as the book values. Assume that Silver Enterprises issues $14,660 in new long-term dept to finance the acquisition. A hospital administrator emailed an agenda to all the staff employees for an upcoming meeting. The agenda listed thepoints below.-Discuss the change in policy for dealing with patient privacy rights.-Discuss the possible solutions to overcrowding in the waiting rooms.-Discuss possible fundraising ideas for the purchase of a spectrophotometer.What part of the meeting is being effectively communicated to staff members?the timeliness of the meetingthe objectives of the meetingthe meeting minutesthe administrator's negotiation skills