Answers
Answer:
The theory of spontaneous generation suggested that the living organisms can come from inanimate objects, however, it is an obsolete theory that is disproved by many experiments. The very first experiment that disapproved it was the experiment by Francesco Redi in 1668.
He demonstrated that maggots come from the eggs of flies instead of rotting meat. He placed raw meat inside of every jar. Half the jars he left open and the other half, he covered with mesh. In open jars, he found maggots after some time but covered jars have no maggots. That proved that the maggots come from eggs of flies rather than rotten meat.
The presence of flies on the meat is responsible for the production of maggots in meat.
This experiment disproves the theory of spontaneous generation because maggots are produced from the flies not the rotten meat. According to spontaneous generation, living organisms are formed or develop from nonliving matter.
So by performing this experiment we can see that maggots are formed when the flies feed on the rotten meat otherwise no maggots are present if the flies are not present there so that's why we can conclude that this experiment rejects the theory of spontaneous generation.
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Related Questions
Which statement best describes the kinds of questions science can answer ?
Answers
Answer:
option A
Science can answer only questions about the natural world
Explanation:
Science is a discipline which on the basis of implementation of experimentation procedure that can mimic the experimental setup resembling that of natural world. Therefore, is capable of answer questions about the natural phenomenas occurring in the natural world.
Answer:
option A.
Explanation:
That's because Science mainly deals with the study of the structure and behaviour of the physical and natural world through observation and experiments.
What is the end product of the process of respiration? *
A. glucose and oxygen
B. water and carbon dioxide
Answers
Answer:
B. carbon dioxide and water
Explanation:
Respiration is a process that animals and plants undergo to create energy to grow, move and sustain life.
The equation for cellular respiration is:
glucose + oxygen —> ATP + carbon dioxide + water
The organisms use glucose from food and oxygen to create ATP (useable energy), carbon dioxide and water.
Therefore, the answer is B. Carbon dioxide and water. Glucose and oxygen are not the end results, they are used to make the end results.
Answer:
B. water and carbon dioxide
Which two types of clouds extend vertically through the troposphere?
Answers
, and
cumulonimbus clouds
That would be my best guess, hope you get everything you needed :)
Use the rose experiment to answer the question. What are the independent and dependent variables?
Answers
Answer:
Independent Variable - Amount of Light;
Dependent Variable - Plant Growth;
Controlled Variables - temperature, soil, container, and humidity
Explanation:
Independent Variable - Amount of Light;
Dependent Variable - Plant Growth;
Controlled Variables - temperature, soil, container, and humidity
1. Plants need light for it growth and development. By studying photosynthesis and chlorophyll one can recognizes two factors: measure of light and development of a plant.
The adjustment in light influences the development of a plant. Both the two factors are measurable.
Cause-Independent Variable: measure of light
Impact Dependent Variable: development of plant
2. Plants have stems that become upward and roots that become descending. Become familiar with geotropism.
Answer:
The rose experiment is not a specific experiment but refers to a general example used to explain the concept of variables in an experiment. In this example, let's say we want to study the effect of fertilizer on the growth of roses.
The independent variable in this experiment is the fertilizer. It is the variable that is manipulated or changed by the experimenter. In other words, the experimenter decides how much fertilizer to apply to each group of roses.
The dependent variable in this experiment is the growth of the roses. It is the variable that is being measured and affected by the independent variable. In this case, the experimenter measures the height, number of leaves, and number of flowers for each group of roses, and this data is used to determine if the fertilizer had any effect on the growth of the roses.
Therefore, in the rose experiment, the independent variable is the amount of fertilizer applied to each group of roses, and the dependent variable is the growth of the roses, measured by their height, number of leaves, and number of flowers.
Why is this important to make new DNA?
Answers
Answer: DNA is vital for all living beings – even plants. It is important for inheritance, coding for proteins and the genetic instruction guide for life and its processes. DNA holds the instructions for an organism's or each cell's development and reproduction and ultimately death. so it is important
Which is the SI unit for length
Answers
Answer:
The Meter.
Explanation:
explain the role microbiologist play in researching and treating the disease
Answers
Answer:
Microbiologists are essential in helping us to treat diseases. Many work as biomedical scientists in hospitals and laboratories: testing samples of body tissue, blood and fluids to diagnose infections, monitor treatments or track disease outbreaks.
What metal is Earth's core mostly made of? a.)copper b.)titanium c.)iron d.)gold
Answers
Answer:
C. Iron
Explanation:
Unlike the mineral-rich crust and mantle, the core is made almost entirely of metal—specifically, iron and nickel. The shorthand used for the core's iron-nickel alloys is simply the elements' chemical symbols—NiFe. Elements that dissolve in iron, called siderophiles, are also found in the core.
I hope this helped ;)
Answer:
Iron
Explanation:
The earth's core is mostly made up of iron and has a radius of about 760 miles. It is surrounded by a liquid outer core composed of a nickel-iron alloy.
which statement best describes how genes are able to produce a organism's traits? A. Genes have versions called alleles, which produce different traits. B. Genes exit the nucleus and go to ribosomes, where proteins form. C. Genes contain codes that specify proteins, which produce traits. D. Genes unwind and become templates, where amino acids can line up.
Answers
Answer:
C
Explanation:
The genes contain codes that specify proteins, which produce traits.
Genes contain codes that specify proteins, which produce traits best describes how genes are able to produce a organism's traits.
What is a gene?Genes are segments of DNA that contain the instructions for making proteins, which are complex molecules that perform a wide variety of functions in the body. Proteins are made up of chains of amino acids, and the specific sequence of these amino acids is determined by the code contained in a gene. Different versions of a gene, called alleles, can produce different sequences of amino acids and therefore different proteins, which can lead to different traits in an organism.
Genes are found in the nucleus of cells, and the process of making proteins begins when a gene is transcribed into a molecule called RNA. This RNA molecule exits the nucleus and goes to ribosomes, which are the site of protein synthesis. At the ribosomes, the RNA molecule serves as a template for the synthesis of a protein, with the specific sequence of amino acids being determined by the code contained in the RNA molecule. The protein is then folded into its characteristic shape, which allows it to perform its specific function in the body.
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Observations have led to all of the following except ___.
Answers
Answer: experimentation and then conversion of experiments into theories
Observations lead to form hypothesis and then deduction which are proved statistically by experiments
A researcher investigates a recently discovered species of plant. The plant has vascular tissues and exhibits a sporophyte and a gametophyte
generation, but lacks seeds. How should the researcher classify the plant?
Answers
Answer;
pteridophyte
Explanation;
Pteridophyte are vascular plants in the phylum plants that reproduce by releasing spores rather than seeds.Other characteristics of pteridophyte includes;
They show alternation of generations, that is the sporophyte generation and gametophyte generation are observed.Sporophytes has true roots, stem and leavesSporangia are produced in groups on sporophyllsHospital patients often receive medications, nutrients, and water intravenously (IV), which means they are injected directly into the patient’s veins through a needle. IV fluid is not pure water, but is instead a saline solution (water containing NaCl). What do you think is the appropriate NaCl concentration for IV fluid? Why?
Answers
Answer:
The answer to the following question is given below.
Explanation:
Saline includes 9 g NaCl dissolved in 1 liter of distilled water utilized primarily for sick people with moisturization.
This NaCl concentration has been presumed to be the physiologic concentration necessary for the restoration of vitamins and minerals by the body to control a suitable osmotic balance.
NaCl is mainly used to cover up the salt missing. In order to help nerves function properly, our bodies do require sodium.
The explanation regarding appropriate NaCl concentration for IV fluid is explained below:
The following information should be considered:
Saline involved 9 g NaCl that dissolved in 1 liter of distilled water utilized primarily for sick people with moisturization. This NaCl concentration has been assumed to be the physiologic concentration significant for the restoration of vitamins and minerals via the body to control a suitable osmotic balance. NaCl is mainly used to cover up the salt missing.Learn more: https://brainly.com/question/20492533?referrer=searchResults
What is a reasonable action that provides safer water for communities?
Answers
Answer:
1.Improve sanitation facilities by providing toilets and latrines that flush into a sewer or safe enclosure.
2.Promote good hygiene habits through education. ...
3.Implement rainwater harvesting systems to collect and store rainwater for drinking or recharging underground aquifers.
DNA carries the instructions to make _____.
Answers
Answer:
They make new sells in your body.
Answer:
Proteins
Explanation:
DNA carries the instructions to make PROTEINS.
This problem leads you through the derivation of a corrected equation for RF in yeast tetrad analysis that takes into account double crossover (DCO) meioses. A yeast strain that cannot grow in the absence of the amino acid histidine (his−) is mated with a yeast strain that cannot grow in the absence of the amino acid lysine (lys−). Among the 400 unordered tetrads resulting from this mating, 233 were PD, 11 were NPD, and 156 were T.
a. What types of spores are in the PD, NPD, and T tetrads?
b. Are the his and lys genes linked? How do you know?
c. Using the simple equation RF = 100 × [NPD +(1/2)T]/total tetrads, calculate the distance in mapunits between the his and lys genes.
d. If you think about all the kinds of meiotic eventsthat could occur (refer to Fig. 5.24), you can see that the calculation you did in part (c) may substantially underestimate RF. What kinds of meioses (NCO, SCO, or DCO) generated each of the tetrad types in this cross?
e. What incorrect assumptions does the simple RFequation you used in part (c) make about themeiotic events producing each type of tetrad? Whencould these assumptions nevertheless be correct?
f. Use your answers to part (d) to determine thenumber of NCO, SCO, and DCO meioses thatgenerated the 400 tetrads.
g. Use your answers to part (f) to write a generalequation that relates the number of DCO meiosesto the number of the various tetrad types. Thenwrite another general equation that computes thenumber of SCO meioses as a function of the number of the various tetrad types.
h. Based on your answer to part (f), calculate theaverage number of crossovers per meiosis (m)between his and lys.
i. Use your answer to (h) to write an equation for min terms of NCO, SCO, and DCO meioses.
j. What is the relationship between RF and m?
k. Use your answer to part (j) to write a corrected equation for RF in terms of SCO, DCO, and NCO meioses. l. Using your answer to part (g), rewrite the corrected RF equation from part (k) in terms of the numbersof the various tetrad types.
m. The equation you just wrote in part (l) is a corrected equation for RF that takes into account doublecrossovers that would otherwise have been missed. Use this improved formula to calculate a moreaccurate distance between the his and lys genes than the one you calculated in part (c).
Answers
Answer:
d and e
Explanation:
The T allele codes for tall stems in pea plants and the tallele codes for short stems. Which of the
following are possible genotypes for the offspring from a cross of Tt x tt?
a TT and tt
b. Tt
C. TT and Tt
d. Tt and tt
Answers
Answer:
D Tt and tt
Explanation:
In one punnet square you will have Tyler in the other three will be tt
Hope this helped if not please contact me so I can explain :)
It is difficult to determine a definition for life that is suitable for all situations. Instead of defining life, biologists have decided to _____.
Answers
Answer:
Describe the characteristics of life
The extract of which gymnosperm seed is used to help improve memory?
Answers
Answer:
Ginkgo
Explanation:
Ginkgo improves memory and enhance circulation and metabolism in the brain.
Answer:
ginkgo
Explanation:
ginkgo seed is used to help improve memory
can someone answer this question plz
i will make you brainlist
Answers
Answer:
Explanation:
In carbon cycle, carbon is just being recycled from one thing to other. For example, here we can see that green plants are part of carbon cycle because they go through photosynthesis, a process through with plants take in Carbon dioxide. The carbon is then used to make molecules such as carbohydrates and proteins, and are part of structural support to plant cells as well. Now when this organism (the organism could be an animal or plant) dies, the bacteria decomposes the organic matter (the dead body) and through respiration the carbon dioxide is released back into the environment.
Another way carbon recycles is that animals, plants, and microorganisms all respire (breathe out) CO2 thus carbon dioxide is added to the environment.
Answer:
Hi.. Ok lets start with animals.....Animals give out carbon dioxide during the breathing process and obtain oxygen.The carbon dioxide given out by the animals is obtained by green plants which use it on addition to chlorophyll water and light energy to make their own food.When animals die they decompose to form micro organisms...The micro organisms add nutrients to the soil thus promoting the growth of plants.I think it is the foodchain
True or false. Introduction of exotic species has beneficial biological and economic effects
Answers
Answer:
false
Explanation:
they have afect them by altering the envirament the nature
Which level of organization is best represented by the liver?
Answers
Answer:
Organ level– an organ is a structure composed of at least two different tissue types that perform a specific function within the body. Examples include the brain, stomach, and liver. Complex functions begin to emerge at this level.
Explanation:
suppose you are desigining a device to transmit information wirelessly. what part of the em spectrum will your device broadcast in and why ?
Answers
Identify whether the changes to biodiversity are natural or due to human intervention.
A mass extinction occurs after
several volcanic eruptions.
A species of wasp is outcompeted
by several other species and
goes extinct.
A population of grubs decreases
as the population of moles, a
predator of grubs, increases.
A species of wildflower goes
extinct after land is cleared
for agriculture.
Three populations of migratory fish
decline after the construction of
a hydroelectric dam.
The number of offspring produced
by a population of frogs decreases
after pesticides enter their pond.
Natural
Human Intervention
Answers
Gastroparesis is a condition that causes a partial paralysis of the stomach the stomach has reduced ability
Answers
Explain the effect of temperature and pH on enzyme action.
Needs to be done ASAP.
Answers
Answer:
enzymes loose their form in both unsuitable ph and temprature.
Explanation:
at very high tempratures enzyme molecules denatures due to high speed movements, at low tempratures enzymes works too slow to be useful enough.
low ph solotions contain lot of H+ and high ph solutions have few H+ , and the number of these H+ ions have polar effects on enzymes. some Enzymes like pepsin works perfect in acidic environment ( ph=2) while others might work at high ph or average ph( like Trypsin works well at ph=7).
What are alien species?
Answers
The iodine changes color in the presence of
A starch
A hydrocarbon
A sugar
A protein
Answers
Answer:
The answer is starch.
A student observed a dying plant in the corner of their science classroom. They learned the process of Photosynthesis and Cellular Respiration already in class. The students were trying to remember the correct chemical equation for the process. In order for the plant to be successfully creating its own food which chemical equation did the student write correctly?
Answers
Answer:
The general chemical equation for photosynthesis is
6CO2 +6 H20 → C6H1206 + 602,
Where CO2 is carbon dioxide, H20 is water, C6H12O6 is glucose, and O2 as oxygen a byproduct.
the process begins with the splitting of water molecules-Photolysis.
2H20 +2 NADP + 8 Photons → NADPH + 2H+2 O. Photons is sunlight that splits the water molecules.
Cellular respiration is the reverse of the process which is the
C6H1206 +6 O2 → 6H20 +6 CO2 +ATPs.
ATPs is the chief product, while C02 is the byproduct.
Explanation:
What does it mean when you have a dream and it comes true
Answers
Answer:
Read below.
Explanation:
When you have a dream that predicts the future, it is called a mantic dream. Your body senses what's going to happen next in the future. When you go to sleep, your mind tells you that that certain event is going to happen in the future.
Answer:
it's called a deja vu
Explanation:
Its the feeling that you have lived through something already, it can be an action or something you feel you have seen before. ;)
How does transferring energy into a container of magnetic marbles affect the speed by shaking the container gently?
Answers
By the transfer of energy into a container of magnetic marbles the speed changes because of kinetic energy produced by the shaking of container gently. This will lead to phase changes.
What is kinetic energy?All the phase changes in a system are accompanied by the change in the energy of a system. These include transfer of kinetic energy to a system. Changes from a more-ordered state to a less-ordered state are endothermic reactions. Changes from a less-ordered state to a more-ordered state are always exothermic reactions.
A phase change in a system takes place when a matter changes from one state to another state. These changes occur when sufficient amount of energy is supplied to the system or lost from the system. Phase changes also occur when the pressure on the system is changed.
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