Answer: experimentation and then conversion of experiments into theories
Observations lead to form hypothesis and then deduction which are proved statistically by experiments
What are these panels used for?
O A. To produce a fission reaction
B. To create electricity from solar energy
O C. To transform energy from moving water
O D. To convert electricity into less usable energy
Answer: b
Explanation: I believe these are solar panels
Look at the following mutation: AUG-GUC-CCU-AAA → AUG-AGU-CCC-UAA-A. The base A was inserted following the start codon AUG. Describe how this mutation affects the encoded amino acid sequence.
Answer: Non sense mutation took place over here.
Explanation:
Mutation took place over here where, the base A was inserted in place of the start codon AUG.
This states that the last codon will code for a stop signal instead of amino acid.
This is a type of non sense mutation when the ribosome is stopped from reading a stretch of mRNA because a stop codon is present over there.
The original set of codon is replaced by the stop codon and the protein synthesis is stopped.
When there is an alteration in the genetic bases of codes that can lead to modification in the phenotype or the genotype of an organism is called a mutation.
The type of mutation that occurred in the given sequence is a non-sense mutation.
The mutation can be explained as:
The mutation changed the reading frame of the triplets from the second place after the AUG or the start codon.The last codon in the unmutated sequence AAA was for lysine (lys) but in the mutated sequence is changed to UAA (stop codon) which codes for the termination of the chain.The mutation in stop codons are called non-sense mutation and now it will signal for termination instead of coding for another amino acid.When the process of translation gets terminated and the ribosomes stop translating due to mutation then it is called a nonsense mutation.Therefore, the process will terminate due to replacement by a stop codon.
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The characteristics that best describe the tail of a phospholipid molecule are _____.
Answer:
Hydrophobic
Explanation:
phospholipids are amphyphilic which means they are both hydrophobic and hydrophilic .. the head is the part that loves water (hydrophilic) and the tail is the part that fears water ( hydrophobic)
What are the five necessary components of a DNA synthesis reaction?
Answer:
They are: substrates, template, primer and enzymes. Four deoxyribonucleotide triphosphates (dNTP's) are required for DNA synthesis (note the only difference between deoxyribonucleotides and ribonucleotides is the absence of an OH group at position 2' on the ribose ring). These are dATP, dGTP, dTTP and dCTP.
spanish:
Ellos son: sustratos, plantilla, imprimación y enzimas. Se requieren cuatro desoxirribonucleótidos trifosfatos (dNTP) para la síntesis de ADN (tenga en cuenta que la única diferencia entre desoxirribonucleótidos y ribonucleótidos es la ausencia de un grupo OH en la posición 2 'en el anillo de ribosa). Estos son dATP, dGTP, dTTP y dCTP.
Explanation:
hope it helps!!
What did you include in your response? Medications can be tested on cell cultures instead of being injected into patients unnecessarily. Cancer cells continue to grow in the cultures uncontrollably allowing scientists to test multiple medications on the cancer cells. Specific treatments that are shown to fight the growth of cancer cells in the culture can be used on patients. Cultures are safer to use than injections of unneeded medications into patients.
Answer:
The statements are correct.
Explanation:
Cell culture is a technique widely used in molecular biology where cell lines are grown in controlled conditions, thus allowing to make experiments and to test compounds that may result useful to treat diverse diseases, including cancer.
Immortalized cell lines are characterized for their ability to proliferate indefinitely which are derived from oncogenic tissues. In cancer research, these lines are used as models to test different drugs and to study cellular mechanisms associated with cancer progression including, among others, proliferation, invasiveness, vascularization, etc. In addition, the mechanisms associated with the death of cancer cells such as, for instance, apoptosis, may also be studied by using immortalized lines.
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).
Answer:
d and e
Explanation:
What is the meaning of morant system as used in rabbit keeping?
Answer:
the design of rabbit hutches is based on this system
Explanation:
it provides a mixture of grazing area and a solid floor for sleeping
Answer: Rabbits can be grazed outside when there is plenty of green grass. This system is known as the morant system and in this case, a morant hutch is used. A moran t22 hutch is a basketlike cage which is built and transferred to different grazing areas. Rabbits are omnivorous animals that eat many food types.
Would you expect the plants and animals present in the southeast of the U.S. To be similar or different to that of the plants and animals present in Northeast Africa?
Answer:
Different
Explanation:
The climatic conditions or weather conditions of the southeast of the United States are different to that of the northeast Africa. And because of this, the two zones are not expected to have the same type of animals.
For example, the weather conditions of the southeast of the United States are humid and thunderstorms, while that of the northeast Africa are hot and dry.
Are bats blind?Non scientific or scientific question?
Answer:Bats are not blind and can in fact see quite well using their eyes. While most bats do have advanced ears that give them a form of vision in the dark known as echolocation, these good ears does not require them to have bad eye
Describe the factors that impact the ability for a skeletal muscle fiber to reach tetany. How do these factors influence the difference in twitch force as the muscle moves from a single twitch to a state of tetanus?
Answer:
Tetanus is a very aggressive disease generated by clostridium tetani, this clostridium, which is a bactera, releases a toxin that generates tetanization of the muscle, where it contracts massively and simultaneously, remaining over time, similar to a contracture and very different from synchronized and sporadic contraction that requires locomotion or other physiological contractions.
The Tetanus toxin acts as a toxin for the muscle cells that make up the skeletal muscle fiber, which unfortunately leads to the progressive death of the patient who suffers from it.
In simple words, tetanus generates muscle spasms that are maintained over time, preventing the function of the organ, that is, of the muscles, immobilizing them and prohibiting them from other movements.
Patients who reach the target are affected by the diaphragm that contributes to respiration, therefore many of the tetanized patients die in a similar way to suffocation due to a constant spasm of the diaphragm.
Explanation:
The bacterium is found in sporulated form on the ground or on oxidized surfaces, that is why it is important to sterilize oxidized elements or to decontaminate them, and to apply the antithetical vaccine, which is what prevents them from suffering from said pathology.
In simple words, the great differences between a physiological contraction of muscle fibers and tetanized contractions is the time in which they occur, since tetanization lasts over time and physiological does not, and the power of contraction in tetanization is greater. , since the toxin of said bacterium potentiates the ionic channels thus generating an increase in the contractile capacity of the muscle fiber compared to the physiological or health situation.
In order for the toxin to have an effect, the bacteria must leave its sporulated state, release the toxin and the wound must be deep enough for the bacteria to enter the bloodstream, after which the toxin enters the myocytes that are muscle fiber cells intensifying muscle spasms by opening calcium channels in a longer period of time, calcium channels are those found in the REL of myocytes, which act as a reserve for this ion, triggering so that the Z lines of the sarcomeros definitively approach spasmodically by shortening the length of the sarcomero.
Question: What are the effects of fishing on the reef ecosystem?
Answer:
Additionally, certain types of fishing gear can inflict serious physical damage to coral reefs, sea grass beds, and other important marine habitats. Coral reef fisheries, though often relatively small in scale, may have disproportionately large impacts on the ecosystem if conducted unsustainable.
Explanation:
Explanation:
Additionally, certain types of fishing gear can inflict serious physical damage to coral reefs, seagrass beds, and other important marine habitats. Coral reef fisheries, though often relatively small in scale, may have disproportionately large impacts on the ecosystem if conducted unsustainably.
explain briefly the process of nutrition in amoeba
Explanation:
amoeba is an microscopic unicellular organism found in the moist soil ponds and lakes. When amoeba comes in contact with food ,it produces pseudopodia around the food particles the food get trapped in food vacuole. Digestive juices are secreted into the food vacuole to digest the food. The digested food is absorbed and used for production of energy. the undigested food present in the food vacuole, is expelled. from the amoeba, by the process of egestion
what chemical substances must be provided for aerobic respiration to take place inside the cell
Answer:
Oxygen
Explanation:
Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as byproducts. In cellular respiration, glucose and oxygen react to form ATP.
Hope it helps
A level in an energy pyramid is called a _______ level
Answer:
trophic
Explanation:
It's called a trophic level. Autotrophs are at bottom because they produce the food and then energy goes to herbivores and then carnivores.
Nerve cells are found in _____.
O plants
O trees
O humans
O grasses
Answer:
Humans
Explanation:
Because humans have nerve cells in them and not many things have this except for animals
Answer:
humans
Explanation:
Because humans have nerve cells and no other thing does except animals
What unusual cellular characteristic does N. locustae share with the protist Mixotricha paradoxa, the organism discussed in the article "A Russian Doll of Symbiosis?"
Answer: Both N.locustae and protist Mixotricha paradoxa do not have a mitochondria.
The mitochondria is a basic cell organelle that palys the role of energy generation for the cell.this energy generated is in the form of ATP.
The organism N. locustae tends to rely on it's host cell that is that grasshopper. This host cell is that in which N. locustae replicates inorder to get a supply of energy.
On the other hand,the organism Mixotricha paradoxa relies on the bacteria endosymbionts to be able to supply it with energy.
During replication, DNA _____.
Answer: is copied.
Explanation: During replication, DNA is copied.
Answer: is xeroxed.
Explanation:
During replication,DNA is xeroxed.
A plant with variegated (two-coloured) leaves was left in the sun for several hours. A piece of one of its leaves were then detached (removed) and tested for sugar.
Explain, as fully as you can, why the yellow region of the leaf had not produced sugar. (5 marks)
Will give brainliest
Please help
Answer:
It does not contain chlorophyll which is needed to absorb light or energy.
Answer:
The parts without chlorophyll do not photosynthesise, and so they do not make starch and the iodine does not change colour.
The green parts contain chlorophyll and photosynthesise to make starch.
The white part of the leaf does not contain chlorophyll, so does not photosynthesise.
Explanation:
2.
Morphology is the study of the.___
A- differences in the biochemistry of organisms
B-geographical distribution of fossils and living organisms
C- differences in the body forms of organisms
D- changes in the gene pools of populations over time
Answer:
c
Explanation:
morphology is the study of living organisms and the relationship between their body structures.
Morphology is the study of the differences in the body forms of organisms.
What is morphology?Morphology is an aspect of biology that deals with the study of organism structures or features or their compositions and how these structures interrelate with each other and the organism for effectiveness.
Therefore, Morphology is the study of the differences in the body forms of organisms.
Learn more about morphology below.
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23 POINTS PLS HELP
Use complete sentences to explain how the mass of oxygen is conserved during cellular respiration.
Answer:here you go
Explanation:
Contrapposto is defined as:
O a photographic print process using gum Arabic.
an asymmetrical arrangement of the human figure.
a German term to denote devotional images used to aid prayer.
diagonal lines the recede into fictive space.
Answer:
an asymmetrical arrangement of the human figure.
Explanation:
Contrapposto is an Italian term and it is use in visual art to describe
an asymmetrical arrangement of the human figure in which the line of the arms and shoulders contrasts with and balances the line of the hips and legs. It was an important sculptural development,it unveiling marks the first time in Western art that the human body is used to expression of relaxed physiological disposition.
The U.S. has sent unmanned spacecraft to _____ the planets in our solar system. A. all B. most C. some D. none of
Every planet in our solar system has been visited by an unmaned spacecraft sent by the United States. The launch years are given in this order
Venus (1962)Mars (1964)Mercury (1973)Jupiter (1977)Saturn (1977)Uranus (1977)Neptune (1977)Pluto (2006)Answer:c some
Explanation:
only a couple of planets have had unmanned spacecraft sent to them
Count then plot the total number of atoms in the reactants to total atoms in the products for the equation 2H₂ + O₂ ➜ 2H₂O
1 Reactant
2 Reactants
3 Reactants
4 Reactants
5 Reactants
6 Reactants
Answer:
welp its wrong i guess my bad
what are the three aspects of environment
Answer:
An environmental aspect is an element of an organisation's activities, products, and services that can interact with the environment. These can include discharges to water, emissions to air, waste and use of natural resources and materials.
Explanation:
HOPE IT HELPS :D
Answer: activities, products, and services
¿Cómo es el átomo, de acuerdo con el modelo de pudín de pasas?
Answer:
La respuesta correcta es "el átomo esta compuesto por electrones de carga negativa embebidos dentro de un protón positivo, tal como un pudín de pasas".
Explanation:
El modelo atómico de Thomson, también conocido como el modelo de pudín de pasas, describe el átomo como un elemento compuesto por electrones de carga negativa embebidos dentro de una nube de carga positiva, tal como un pudín de pasas. Thomson fue el científico que descubrió los electrones en 1904, año en el que no se tenía mucha información aún de la interacción de las partículas subatómicas. En el modelo atómico de Thomson los electrones estaban distribuidos uniformemente, flotando alrededor de una nube de carga positiva.
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Chan Hee is inflating a basketball using an air pump. He notices that the pump gets warm as he uses it. What is a good
hypothesis that could lead to new experimentation?
If there is no air in a basketball, then it is hard to play the game.
A basketball that is inflated bounces better than one that is not inflated.
If air in a pump is squeezed more, then the air gets hotter because energy is added to it.
Basketball is more fun to play than baseball because you have to move a lot more.
Answer:
If air in a pump is squeezed more, then the air gets hotter because energy is added to it.
Explanation:
A good hypothesis in the given case is that inflating basketball is getting warmer, the more it is pumped, and as a result, it would possess more heat or more friction due to all the air being pumped into the basketball at a single time.
hope this helped!
A colorimeter is an instrument used for chemical analysis by comparing a liquid’s color with standard colors. In an experiment, a scientist used two colorimeters and noted the readings. The first colorimeter showed consistent readings that were five points lower than the actual reading. The second colorimeter provided readings that were the same as the actual reading. Which two statements are implications of these readings?
1). The first colorimeter is reliable but not valid.
2). The second colorimeter is valid and reliable.
3). Both the colorimeters are reliable and valid.
4). The readings of the first colorimeter can be used without repeating the experiment.
5). The readings of the second colorimeter aren’t reliable and can’t be used for the experiment.
Answer:
The correct answers are option A and B
Explanation:
The first colorimeter is reliable because the the reading it is showing is same for all the times the experiment is done. Though the result obtained is wrong but it is reliable.
The second colorimeter is valid and reliable because it is showing the correct results again and again. This is valid result as it is giving the result same as that of actual readings.
Needed ASAP
The point where the lever rocks back and forth is called _______ or ________
Answer: the fulcrum
i don't know the other one
10. Which of the following groups of organisms are prokaryotic? (Choose all that apply)
Archaea
Or
Plants
Or bacteria
Or fungi
Answer:
Archaea bacteria
Explanation:
just search each answer choice asking if its eukaryotic or prokaryotic and it will tell you
Bacteria and Archaea are groups of organisms that are prokaryotic, which means that their cells do not have cellular organelles or a delimited nucleus in the cytoplasm.
The prokaryotic cell is characterized by not having a cell nucleus, therefore its ribosomes are smaller and its genetic material simpler.
Prokaryotes are, in most cases, unicellular microorganisms.
The bacteria is a unicellular and prokaryotic microorganism, which means that it does not have a nucleus, they are a few micrometers long and various shapes including spheres (cocci), rods (bacilli) and helices (spirils).
A diversity of unicellular microorganisms that make up the archaea kingdom lacking nuclei (prokaryotes) is known as archaea.
Their cells are surrounded by a covering (cell wall) made of various materials that give them high resistance against antibiotics or other harmful substances.
Therefore, we can conclude that bacteria and archaea are groups of organisms that are prokaryotic, which do not have a defined nucleus and or organelles surrounded by a membrane.
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Where do the spindle fibers attach?
