Explain how pasteur's experiment supported the idea that cells only come from other cells. Explain how it failed to support the idea of spontaneous generation.

Answers

Answer 1

Answer:

Pasteur and Tyndall Louis Pasteur's 1859 experiment is widely seen as having settled the question of spontaneous generation. He boiled a meat broth in a swan neck flask. ... When the flask was turned so that particles could fall down the bends, the broth quickly became clouded.

Explanation:


Related Questions

what are the steps in the digestion of protein​

Answers

answer - Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains

Explanation:

Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.

hope it helps!

HELP PLEASE
need to find the average for the values

Answers

Answer:

Average for zero: 51.1

Average for two: 76.3

Average for four: 87.4

Average for six: 103.3

Blank 1: 51.1

Blank 2: 76.3

Blank 3: 87.4

Blank 4: 103.3

Explanation:

The above answers gave the average of each of the set of numbers.

To calculate the average of a set of numbers, It is done by simply summing the numbers and then dividing the numbers by the total number of values in that set of numbers.

From the data given, zero, two, four and six all have their set of numbers. So, with those values, the average was calculated.

If f(x) = 3x - 1 and g(x) = x + 2, find (f- g)(x).
Rrgggggg

Answers

Answer:

(f - g)(x) = 2x - 3

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Combining Like Terms

Explanation:

Step 1: Define

f(x) = 3x - 1

g(x) = x + 2

(f - g)(x) is f(x) - g(x)

Step 2: Evaluate

Substitute:                    (f - g)(x) = 3x - 1 - (x + 2)Distribute -1:                 (f - g)(x) = 3x - 1 - x - 2Combine like terms:    (f - g)(x) = 2x - 3

Which of the following is a molecule?
A. Argon
B. Water
C. Nitrogen
D. Uranium

Answers

Answer:

Argon- a chemical element

Water- polar molecule

Nitrogen- chemical compound

Uranium- chemical element

Hope this helps! :)

Please give brainliest

:)

Explanation:

In conclusion B. water is a molecule

Where are many critical biodiversity hotspots located?

Answers

Answer:

Tropical forests are typically biodiversity hotspots and are usually filled with endemic species. The Upper Amazonia/Guyana Shield, the Congo Basin, and the New Guinea/Melanesian Islands have the highest number of endemic terrestrial (land-living) species on Earth

Explanation:

hope this helped:)

Which of the following is true of the water at the bottom of the ocean?
It contains the most salt.
It is particularly rich in nutrients.
It will be the warmest water in the region.
There are very few organisms that can survive there.

Answers

Answer: it is particularly rich in nutrients

Explanation:

Bacterial disease is caused by the multiplication of bacteria in a patient. How do pathogenic bacteria harm a patient?

Answers

Answer:

Host Susceptibility

Resistance to bacterial infections is enhanced by phagocytic cells and an intact immune system. Initial resistance is due to nonspecific mechanisms. Specific immunity develops over time. Susceptibility to some infections is higher in the very young and the very old and in immunosuppressed patients.

Bacterial Infectivity

Bacterial infectivity results from a disturbance in the balance between bacterial virulence and host resistance. The “objective” of bacteria is to multiply rather than to cause disease; it is in the best interest of the bacteria not to kill the host.

Host Resistance

Numerous physical and chemical attributes of the host protect against bacterial infection. These defenses include the antibacterial factors in secretions covering mucosal surfaces and rapid rate of replacement of skin and mucosal epithelial cells. Once the surface of the body is penetrated, bacteria encounter an environment virtually devoid of free iron needed for growth, which requires many of them to scavenge for this essential element. Bacteria invading tissues encounter phagocytic cells that recognize them as foreign, and through a complex signaling mechanism involving interleukins, eicosanoids, and complement, mediate an inflammatory response in which many lymphoid cells participate.

Genetic and Molecular Basis for Virulence

Bacterial virulence factors may be encoded on chromosomal, plasmid, transposon, or temperate bacteriophage DNA; virulence factor genes on transposons or temperate bacteriophage DNA may integrate into the bacterial chromosome.

Host-mediated Pathogenesis

In certain infections (e.g., tuberculosis), tissue damage results from the toxic mediators released by lymphoid cells rather than from bacterial toxins.

Intracellular Growth

Some bacteria (e.g., Rickettsia species) can grow only within eukaryotic cells, whereas others (e.g., Salmonella species) invade cells but do not require them for growth. Most pathogenic bacteria multiply in tissue fluids and not in host cells.

Virulence Factors

Virulence factors help bacteria to (1) invade the host, (2) cause disease, and (3) evade host defenses. The following are types of virulence factors:

Adherence Factors: Many pathogenic bacteria colonize mucosal sites by using pili (fimbriae) to adhere to cells.

Invasion Factors: Surface components that allow the bacterium to invade host cells can be encoded on plasmids, but more often are on the chromosome.

Capsules: Many bacteria are surrounded by capsules that protect them from opsonization and phagocytosis.

Endotoxins: The lipopolysaccharide endotoxins on Gram-negative bacteria cause fever, changes in blood pressure, inflammation, lethal shock, and many other toxic events.

Exotoxins: Exotoxins include several types of protein toxins and enzymes produced and/or secreted from pathogenic bacteria. Major categories include cytotoxins, neurotoxins, and enterotoxins.

Siderophores: Siderophores are iron-binding factors that allow some bacteria to compete with the host for iron, which is bound to hemoglobin, transferrin, and lactoferrin.

Explanation:

What type of speciation results in hybrids of the 2 species?

Answers

Answer:

Alloploidy results when two species mate to produce viable offspring. In the example shown, a normal gamete from one species fuses with a polyploidy gamete from another. Two matings are necessary to produce viable offspring. The cultivated forms of wheat, cotton, and tobacco plants are all allopolyploids.

Explanation:

in chemical reactions, bonds blank in reactants.

Answers

in chemical reactions, bonds break in reactants

What are the Complementary DNA base pairs: GGGCCATATAG. What are the Complementary DNA base pairs: ATTGGCCTAGC

Answers

Answer:

CCCGGTATATC

TAACCGGATCG

Explanation:

G and C are complimentary; T and A are complimentary

Just swap each letter following that rule :)

how larvae of fish get nutrition

Answers

Answer:

The larval period of fish development is certainly the most complex from the aspect of nutrition. During this period, the digestive tract is not fully phisiologicaly developed.

Explanation:

The nutrition of larvae is largely based on the consumption of zooplankton. Such food must be distributed to larvae 10-24 times a day.

Galileo and newton both study the night sky. Galileo study Jupiter and its moons. Newton study the gravitational force that held the planets in orbit. Which of these statements best explains why the two scientist propose different theories about the solar system?

a. both scientist had different interests.
b. both scientist lacked scientific evidence.
c. they wanted to be the first to discover new planets.
d. they wanted to contradict each other‘s theories.

Answers

Answer:

a. both scientists had different interests.

Explanation:

Newton focused in physics for the most part and the study of what we know now as Newton's laws

while Gallileo focused on planets and astrology

A. They’re both discovering different things

identify the type of mutation shown in the diagram, with respect to chromosome 20

Answers

I think is Insertion since that other part of the chromosome( the gray) was added to the current chromosome( the yellow).

how do organelles interact in the production and use of hemoglobin found in theses cells

Answers

Answer:

B

Explanation:

Answer:B

Explanation:

What would happen to a cell if its cytoplasm contains 97% water and 3% solute and it is placed into a container that has a solution of 92% water and 8% solute?

Answers

The cell would probably get smaller

A cell if its cytoplasm contains 97% water and 3% solute and it is placed into a container that has a solution of 92% water and 8% solute - cell will lose water and shrink.

A hypertonic solution, the solution has a lower water concentration than the cell cytosol, and water moves out of the cell until both solutions are isotonic

if you place a cell in a hypertonic solution, the cell shrinksit loses water as due to osmosis water moves from a higher concentration inside the cell to a lower concentration outsideThe water will move out of the cell to try to equalize.

Thus, A cell if its cytoplasm contains 97% water and 3% solute and it is placed into a container that has a solution of 92% water and 8% solute - cell will lose water and shrink.

Learn more:

https://brainly.com/question/18968473

HELP, 100 POINTS!

Identify one source of carbon that can be found in each of these four spheres: atmosphere (air), geosphere (land), biosphere (living organisms) and hydrosphere (water).

The mitochondria has been described as the engine of the cell. Why is this a fitting nickname? How is this organelle involved in the process of cellular respiration?

Describe the process of photosynthesis in plants. Why is this process important to animals and humans?

How are the processes of cellular respiration, photosynthesis and carbon cycle related to each other?

Explain how one of the processes discussed in this module (photosynthesis, cellular respiration or the carbon cycle) apply to both the Law of Conservation of Matter and Law of Conservation of Energy.

Answers

Answer:

1.Mitochondria is considered as the power house of the cell as it helps in producing large amount of energy in the form of ATP (adenosine triphosphate) that is used in driving various cellular activities.

2.Through a process called photosynthesis, plants use energy in sunlight to turn a gas called carbon dioxide and water into sugar. Plants then use this sugar to grow. At the same time, plants produce a gas called oxygen as a waste product, which is lucky for us and other animals because we need oxygen to breathe!

3.Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.

4.Cellular respiration uses oxygen and has it's waste product of carbon dioxide (CO2). How does photosynthesis demonstrate the law of conservation? ... The AMOUNT of carbon-dioxide atoms released by respiration are EXACTLY EQUAL to the atoms of these materials contained in the oxygen and carbon converted.The Law of Conservation of Matter states that matter cannot be created or destroyed. The carbon cycle is an example of the Law because the same carbon atoms are being recycled through the carbon cycle. ... Carbon is used for energy, and some is stored for growth.

Discuss the roles of the enzymes secreted by the pancreas during digestion.

Answers

During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.

What have researchers found a correlation between with respect to black holes? HELP PLEASE QUICK

Answers

Answer: It’s A I think

Explanation:

I have no idea. Its Not D, im pretty sure. And I dont think it’s B. So it’s either A or C, and I think it’s A.

Answer: A

Explanation: just took the quiz and got it right

Which of the following pair of codons both code for serine?







a
ACA and AUC
b
UCG and GCU
c
GCC and UGG
d
AGC and UCC

Answers

Answer: The answer would be D.

Explanation: I took the test and i got D. Sorry if that’s wrong

What created the solar system? *
The Big Bang
A dust cloud
O O O O
O Nebula
A shooting star

Answers

Answer: dust cloud

Explanation:

dust condensed after asteroid collisions at the kepler belt  


Where are instructions for making cell parts found in a cell?

Answers

Answer:

The nucleus contains nearly all the cell's DNA and with it the coded instructions for making proteins and other important molecules in a cell

Hope it's help ^_^

Which of the following is NOT a property of water?
O A) It is a good solvent.
OB) It is denser when frozen than when liquid.
OC) It resists temperature changes.
OD) it is cohesive.
O El It can be found as a solid. liquid. or gas.

Answers

Answer:

It is denser when frozen than when liquid.

Explanation:

Ice is actually less dense than water. The lattice arrangement of ice allows water molecules to be more spread out than in a liquid, making ice less dense than water.

Hope that helps.

e a sports
is in the trash

Answers

Answer:

K

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Answer:

and now you're trash

Explanation:

food is important for growing amd repairing in the body. ny which process is food broken down into nutrient molecules​

Answers

Answer:

Digestion proper, which is the mechanical and chemical breakdown of food into particles/molecules small enough to pass into the blood. Absorption is the passage of food monomers into the blood stream. Assimilation is the passage of the food molecules into body cells.

What is the coriollis effect

Answers

Answer:

The Coriolis effect is defined as how a moving object seems to veer toward the right in the Northern hemisphere and left in the Southern hemisphere.

Explanation:

Please give brainliest!

Which layer affects the oceanic and continental plates here on Earth?

Answers

Answer:

lithosphere

Explanation:

plz help for brainlyist​

Answers

Answer:

1,3

2, organs

3, i do not know

4, i do not know

PLEASEEE HELPPPPP!!!!!!!
which aquatic ecosystem is the most commercially exploited for seafood and minerals.

Answers

Answer:

The coral reefs of the Caribbean are thought to be under threat

Explanation:

Overfishing threatens over 60 percent of Caribbean coral reefs. Declines in coral cover and increases in algal cover have been observed across the region. This analysis identified about one-third of Caribbean reefs at high threat from overfishing pressure and about 30 percent at medium threat.

A "healthy ecosystem" can also be described as:

Answers

Answer:

water and rocks; energy source, break down dead plants and animals, returning vital nutrients to the soil.

Explanation:

Which of the following factors most likely triggers arousal from hibernation?

A) the sun rising in the morning B)snow falling onto the ground
C) the environmental temperature dropping below 0 °C
D) a significant decrease in the animal's respiration rate

Answers

Answer:

A) the sun rising in the morning

Explanation:

In biology, hibernation refers to a physiological state where a plant or animal is metabolically inactive in the winter period (characterized by extreme cold). As far as the animal or plant is concerned, the cold weather during winter is an adverse condition, hence, they undergo hibernation in order to conserve their energy.

According to this question, arousal or wakening from hibernation would be triggered in the presence of heat source, which in this case is the SUN RISING IN THE MORNING.

Other Questions
whats 7, 6, 4, 10, 3 least to greatest Which positive lifestyle choice can reduce the risk of developing noncommunicable diseases?applying sunscreenusing insect repellantwashing hands frequentlycovering the mouth when sneezing Which group makes up the largest level of a trophic level pyramid? How is energy related to the change of state represented by the model? A. Atoms gain energy as a gas changes in a solid.B. Atoms gain energy as a gas changes in a liquid.C. Atoms lose energy as a gas changes in a solid.D. Atoms lose energy as a gas changes in a liquid. what are the three basic types of issues that arise in business finance? Need help geometric sequences see pic for details find the median for each set of data 4,12,7,6,10,5,11,8 which example is a weak base? ethyl alcohol, ammonia, potassium hydroxide or vinegar? Explain how growing personal income is related to economic conditions. A cardboard box, which weighs 0.6 pound when empty, is filled with 15 bags of beans and a 4-pound bag of rice. The total weight of the box and the contents inside it is 25.6 pounds. One way to represent this situation is with the equation 0.6 + 15b + 4 = 25.6. 1.In this situation, what does the solution to the equation represent? 2.Select all equations that are also equivalent to 0.6 + 15b + 4 = 25.6. Equation A: 15b + 4 = 25.6 Equation B: 15b + 4 = 25 Equation C: 3(0.6 + 15b + 4) = 76.8 Equation D: 15b = 25.6 Equation E: 15b = 21 I need to show my work for 6a = 36 Given f(x)=x3f(x)=x3, solve for xx when f(x)=2f(x)=2. For a Biology assignment, Lisa collected data on plant growth of a sunflower every week for 9 weeks. When Lisa first planted the sunflower, it was 10 centimeters tall. The time (in weeks) is plotted against the height (in centimeters) as shown below. Using the best-fit line, approximately how tall was the sunflower plant during the fifth week? 33 centimeters 34 centimeters 35 centimeters 30 centimeters distinguish between a mixture and solution Plzzz helpEnding of 14. Vas conmigo ? No, no puedo ir ___A.con nosotros B. Con ellosC. Contigo D. Conmigo Coca Cola is offering prizes under the caps of their sodas. Coca Cola claims that one in six game pieces wins a prize. The official rules of the contest states that the odds of winning a prize are 1:6. Is the claim one in six game pieces wins a prize correct? Why or why not? Choose the word or phrase that best completes each sentence.The Great Wall of China symbolized ______.The Qin dynasty standardized money to make trading and commerce more ___.The Qin dynasty unified the people with a standardized system of __________.The Qin dynasty abolished the system of ________________________________ for government positions. Fill in the missing mRNA bases sequence that corresponds to the DNA base sequence - CAC GTG GAC TGAFill in the missing amino acid sequence that corresponds to the DNA base sequence CAC GTG GAC TGA 4. Which action made George Childress significant to Texas history? A. wrote the Texas Declaration of independence B. led the attack on Goliad C. traveled to the United States seeking suppliesD. commanded the Texas army What are the rules for writingnames/formulas for ioniccompounds? Give exampleswhere you need to producethe formula from the nameAND the name from theformula. Make sure toinclude examples of transition metals andpolyatomic ions.