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.
Which of the following will most likely decrease genetic diversity?
А increased reproduction
B selective breeding
C mutations
D immigration
Selective breeding dangers reduced genetic diversity can result in certain insects or diseases attacking, which could be quite devastating. Thus, option B is correct.
What is the cause of selective breeding in genetic diversity?Selective breeding can contribute to a large reduction in the genetic diversity of farmed populations, endangering long-term evolutionary progress and limiting populations' ability to adjust to environmental changes.
Unknowingly selecting uncommon illness genes as part of a desirable characteristic might cause difficulties with particular organisms, such as the high prevalence of deafness in Dalmatian dogs.
Genetic diversity is typically reduced by selective breeding, since only a few individuals are employed to produce enormous numbers of offspring. The population's survivability may be impacted by this.
Therefore, selective breeding will most likely decrease genetic diversity.
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Bacteria are sensitive to certain antibiotics like chloramphenicol and streptomycin, which kill the bacteria by interfering with translation through mechanisms that affect the ribosome's ability to function. If a researcher were to culture populations of Archaea and then treat them with either of the previously mentioned antibiotics, what would be the predicted results
Answer:
Explanation:
Neither antibiotic will have an effect on Archaeon populations because their ribosomes are different from bacterial ribosomes.
The predicted result of this experiment is that Archaea do not show any response towards specific antibiotics.
What are Antibiotics?Antibiotics may be defined as a type of medication that inhibits the growth of microorganisms and fight against bacterial infections in humans or animals.
Due to the alterations in the structural and functional unit of ribosomes, none of the antibiotics causes any significant effect on the body of Archaea.
Therefore, it is well described above.
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What kind of connective tissue forms the superficial layer of all parts of a bone?
Answer:
compact bone am i correct
Answer:
compact bone
Explanation:
this is also called cortical bone,dense bone..in which the bony matrix is solidly filled with organic ground substance and inorganic salt,leaving only tiny space (lacunae) that contain the osteocytes,or bone cell....and both type are found in most bone.
What has to be done to remove asbestos?
Asbestos is not to be taken care of by non-professionals, it needs to be done with special equipment since it is so dangerous to unprotected humans
Which of these costs of using coal is a direct cost?
O A Cost of related pollution
B. Mining costs
O C. Cost of damage to common resources
O D. Human-health costs
Answer:
B. Mining costs
Explanation:
just did ap3x ;)
The costs of using coal is a direct cost that is Mining costs that is in option B as, the cost of related pollution is an indirect cost because it is not a direct expense associated with mining, but rather an expense that arises from the pollution that results from burning coal.
What is direct costs ?Direct costs are expenses that are directly tied to a specific activity or decision. In the case of coal, the direct costs would include the costs associated with mining, transporting, and processing coal. These costs are incurred as a result of the direct activity of extracting and utilizing coal.
Mining costs are a direct cost of using coal because they are expenses incurred directly as a result of the coal mining process. The mining costs would include expenses such as labor costs for miners, equipment costs for excavation and transportation, and other direct costs associated with the mining process.
Hence, The costs of using coal is a direct cost that is Mining costs that is in option B.
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A DNA triplet reads ATT. what is its corresponding mRNA codon?
1. ATT
2. TAA
3. UAA
4. AUU
Answer:
UAA
Explanation:
In RNA, U gets paired with T while T get paired with A
Hope this helps :)
Which statement explains why the structure of sickle cells differs from normal red blood cells?
A
The gene mutation affects protein synthesis.
B
The gene mutation prohibits DNA replication.
C
The gene mutation inhibits the cell’s ability to produce tRNA.
D
The gene mutation affects the cell’s ability to produce ATP.
Answer:
a
Explanation:
The structure of sickle cells differs from normal RBCs because of the gene mutation that affect the protein structure.
Sickle Cells:
These cells look like a crescent moon. They are unable to transport oxygen. This cause anemia in the patient.
It is an inherited disorder in which point mutation in the lead to the different protein structure. This results in the sickled RBCs.
Normal blood cells are round in shape and able to transport oxygen.
Therefore, the structure of sickle cells differs from normal RBCs because of the gene mutation that affect the protein structure.
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During photosynthesis, plants transform the energy in sunlight into chemical
energy by converting molecules of carbon dioxide and water into sugar and
oxygen molecules. What are two reasons scientists might use a model to
represent what happens during photosynthesis?
A. The molecules involved in photosynthesis are too small to see
with an optical microscope.
B. It is too dangerous to study the plants in which photosynthesis
occurs.
I c. Photosynthesis is too complex to be able to use experiments to
learn how it works.
D. The steps of photosynthesis occur too quickly to show each one
as it happens.
Answer:
A i am sorry if it is wrong
Explanation:
What uses bacteria to copy DNA?
O A. Nuclear transfer
O B. Gel electrophoresis
O C. Recombinant DNA technology
O D. Polymerase chain reaction
Answer:
C.
Explanation:
The method that uses bacteria to copy DNA is recombinant DNA Technology. To copy the DNA, the recombinant DNA method uses bacteria such as E. Coli whose plasmids are combined with various gene to produce the substance that is wanted.
Polymerase chain reaction uses bacteria to copy DNA.Therefore, the correct option is D.
What is polymerase chain reaction?Polymerase Chain Reaction is a laboratory technique used to amplify a specific DNA sequence, making many copies of it. The process involves repeated cycles of heating and cooling a reaction mixture containing the DNA template, primers, and a heat-stable DNA polymerase enzyme.
The DNA polymerase enzyme used in PCR is derived from a bacterium called Thermus aquaticus, which can withstand the high temperatures used in the reaction. By copying the DNA sequence multiple times, PCR enables researchers to study and analyze small amounts of DNA, such as those obtained from crime scenes or ancient fossils.Therefore, the correct option is D.
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QUESTION 1
How many pairs of ribs are in the human body?
O 6 pairs
O 12 pairs
O 9 pairs
O 16 pairs
QUESTION 2
Which facial bone forms the chin?
O The Mandible bone
O The Mandible & Maxillae bone
The Maxillae bone
O The Mandible, Maxillae & Zygomatic bone
Answer:
12 pairs
mandible
Explanation:
P Flag question
Question 3 Not yet answered Points out of 3.00
Fill in the equation with the missing pieces.
6
CO2 + 6
H2O + light
C6H12O6 +
6
02
Question 4 Not yet answered Points out of 1.00
P Flag question
What is the name of the item that plants need for nutrition that is
Select
Answer:
Co²+6H20+light =C6H12O6+O2
Explanation:
This is lysis reactionan so forms glucose and oxgen by water and co2
and in 2nd question plants need N² for growth
Help me with this question if your a good person and luvs your family
A consommé is a traditional soup made by _________ and ___________ stock.
Answer:
concentrating and clarifying stock.
Explanation:
just got it right on the mastery
Given the DNA template strand below type the complementary mRNA that would be made during transcription.
TATAGCGTACGGCTAT
Answer:
AUAUCGCAUGCCGAUA
Explanation:
Original DNA → T A C C A T G G A A C A A G T
Answer:
what do you mean
Explanation:
What is a real world example of enzymes being used?
Answer:
Enzymes are used in the food, agricultural, cosmetic, and pharmaceutical industries to control and speed up reactions in order to quickly and accurately obtain a valuable final product. Enzymes are crucial to making cheese, brewing beer, baking bread, extracting fruit juice, tanning leather, and much more.
Explanation:
yessir
Explain the difference between independent variables, dependent variables, and control variables.
Answer:
Independent: Purposely altered
Dependent: Changes with respect to the independent being altered
Controlled: Never changes
Explanation:
An independent variable is a variable in which does not rely on other pieces/variables of an experiment to assume a value. In other words, it does not change when other variables change. However, it can be changed intentionally by the scientist.
A dependent variable is a variable in which its change in value relies on other pieces/variables of an experiment to assume a value. So, if the indeoendent variable is changed, the dependent variable will change as well. The opposite is not true though - if the dependent variable changes (for whatever reason), the independent variable hasn't necessarily been changed.
A controlled variable is a variable that stays CONSTANT throughout an experiment. It is never changed, and nothing will change it. An example of a control variable is the number of participants in a study: no more participants are being added, and no participants are being removed. The number of participants remains STATIC throughout the study.
what part of DNA contains the genetic code
Answer:
Genetic Code. ... stored on one of the two strands of a DNA molecules as a linear, non-overlapping sequence of the nitrogenous bases Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). These are the "alphabet" of letters that are used to write the "code words".
DNA is the genetic material that has codes for genes that makes up the genotype and phenotype of an organism.
The genetic code is stored on the double helix of the DNA molecule.
They are arranged in a linear manner that does not overlap each other.
The code is represented by the alphabets of nitrogenous bases.
The purines adenine (A) and Guanine (G) and pyrimidines cytosine (C) and thymine (T) are found on the strands.
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Weathering – Decide whether the statement is an example of chemical or mechanical weathering. Write “M” for mechanical or “C” for chemical in the space provided.
____ 1. Mosses growing on the surface of rocks, producing pits in the rock.
____ 2. The wedging of tree roots along natural joints in granite outcrops.
____ 4. The oxidation of minerals that contain iron.
____ 5. Animal burrows in soil that let in water and air.
____ 6. Repeated freezing and thawing of water that cracks rock.
____ 7. The action of water, salt, and air on car fenders and panels.
____ 8. Acids from plant roots which break up rock.
____ 9. Formation of potholes in streets during severe winters.
____ 10. Lifted sections of sidewalk along tree-lined streets.
____ 11. A small rock falling from a cliff.
____ 12. Feldspar mixing with acidic groundwater and producing clay minerals.
____ 13. Halite in rocks dissolving in water.
Answer:
m
m
m
c
m
m
c
c
m
m
m
c
c
Explanation:
Describe how the mutation has effected the protein coded by this gene?
Answer:
By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition.
Why did the temperature change or not change during the reaction?
Answer:
When substances react and the temperature of the mixture decreases, the reaction is endothermic. ... If a reaction is exothermic, more energy is released when the bonds of the products are formed than it takes to break the bonds of the reactants. This is the reason for temperature change during a reaction.
Help me with this if your going to be successful when you grow up and take care of your moms and dads
Answer:
fjhsiorhgsjrghjoeshghwejg
Explanation:
Describe the main stages of mitopic division
Can you plz help me I don’t understand this
Answer:
The answer is A
Explanation:
The teeth grinds the food and that is physical and the saliva breaks down the molecules, so that is chemical
Compared to the distances between the planets of our solar system, the distances between stars are usually
A) much greater
B) much less
C about the same
Answer:
the distances are much greater
Explanation:
because stars have their own light and energy so they dont need to orbit planets or other stars.Planets dont have their own light so they need to orbit a star and a star is usually orbited by multiple planets (sorry for my bad english)
Give an example of interspecific competition.
PLEASE HURRY
Cells contain structures, called organelles, that carry out specific functions for the cell. Which of the following is NOT true regarding the theory of cells?
A. All living things are made up of one or more cells.
B. As the cell grows, so does the size of the organism.
C. Cells grow and respond to changes in their environment.
D. All cells are considered to be living.
Answer : B
because that statement is wrong.
-If you can please awsner both parts of the question in complete sentences!!
-Thank you for the help I really do appreciate it!♡!
2
What does the author describe in the passage?
A
the history of the Hoover Dam and its impachon the Southwest region
B
the development of different types of hydropower
C the political environment in America during the construction of the Hoover
Dam
improvements in irrigation along the Colorado River before the Hoover
Dam was built
Answer: A . the history of the Hoover Dam and its impact on the Southwest region.
Explanation:
This question is based on the article, ''The Hoover Dam'' by Michael Stahl. In it the author begins by describing what hydroelectricity is and how it came about.
The author then used the Hoover Dam to illustrate the points made about hydroelectricity by first giving a brief history of the construction of the dam and the sacrifices it took to build it. The impact the dam had on the area it supplies - the Southwest - was also analysed.
What is an observational study? How is it different from a controlled experiment?
Answer:
Observational study is when you observe your subject and take more notes rather that writing down quantitative data. Meanwhile, a controlled experiment is more quantitative.
Explanation: