An index fossil will be more useful in dating the rock than ancient relative because carbon dating can be performed using the fossil which will give more accurate details rather than the relative dating performed using ancient relative.
Index fossil is any preserved remains of the plant or animal that is particularly useful for the dating purposes. It is useful for determining the geological periods. Most of the rocks that contain the index fossil are found in marine environment.
Carbon dating is the process of determining the age of ancient objects or fossils. In this the amount of radioactive carbon is measured as the rest forms of carbons stop being absorbed but radioactive carbon continues to decay even after an organism dies.
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Two objects with equal masses are in motion. Which object will have more kinetic energy?
(1 point)
O the object with the greater acceleration
O the object with the greater density
O the object with the greater speed
O the object with the greater volume
Jm
Answer: The object with the greater acceleration.
Explanation:
Answer:1. the object with the greater speed 2. The car is moving faster. 3.a car with a mass of 1,000 kg moving at 30 m/s 4. The wildlife keeper increases speed and catches the rabbit. 5. His kinetic energy increased for a while, then it became constant.
Explanation:i did it
What do geysers indicate about the temperature of Earth's interior? (science)
Answer: There is magma near by, hot temperatures.
A large, old tree deep in the forest was knocked down in a windstorm. As it fell, t pushed four other somewhat smaller trees down with it, opening up quite a
large patch of sunlight in an area that had been shady for many decades. What is most likely to happen in the sunny patch in terms of plant growth?
No plants will be able to grow in it until neighboring trees shade it more.
O Seeds of sun-loving plants will germinate and grow in it
O Primary succession will start vith very small plants or lichens.
O Shade-loving plants will grow in it. since is in the forest.
What is this Cell Called_________?
Answer: Plant cells
Explanation:
Answer:
plant cells
Explanation:
Which two statements explain why water is vital to sustaining a healthy ecosystem.
Answer:
clean fresh water is necessary for drinking and sanitation and it moves things like nutrients, pathogens and sediment in and out an ecosystem
when ecf [k ] decreases (hypokalemia), then which of the following will occur? group of answer choices renin secretion will decrease aldosterone secretion will decrease activity of the na /k atpase on collecting duct basolateral membranes will increase angiotensin ii levels will increase cortical collecting duct cells will decrease k secretion
A decrease in the extracellular K+ concentration leads to hyperpolarization of the cell membrane and can result in muscle weakness that is occasionally severe enough to cause paralysis, which occurs in patients with hypokalemic dRTA.
Conversely, hypokalemia inhibits aldosterone production. Small changes in plasma potassium have a greater effect on aldosterone than on renin secretion. In patients with essential hypertension, diuretic-induced changes in serum potassium concentrations may affect both renin and aldosterone secretion. You also need potassium for a healthy digestive system and bone health. Low potassium can affect these important functions in your body. Over time, low levels of potassium in your body can cause effects such as abnormal heart rhythms, muscle weakness, and even paralysis.
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how you can contribute and help to solve the problem on water crisis at present and in the future
Answer:
share water
Explanation:
Sharing water is an efficient way to increase justice and resilience. This is equally true for relationships between countries who share a river, lake, or groundwater aquifer. By managing it together, they are much better prepared for the increasingly erratic rainfall patterns and the growing number of droughts and floods that must be expected as the global temperature rises.
………….,,…….I need help with this I’m not very smart
Answer:
It is kind of sketchy, but this is how it should look. You can refine the dots. The way you find out to plot is through the previous table. If you look at this graph, you will notice that the Y (vertical line) is temperature, and the X (horizontal line) is time.
You would plot it like the time is X and the temperature is Y.
If you have any more questions, add it to the comments of this answer and I'll respond!
Can you please help me with this question thank you
Answer:
The error is "philosopher" at the end of the text
Explanation:
Match the letters with the main components involved in protein synthesis
The correct match of the letter with the main components of protein synthesis in the given diagram are: (A)- Translation; (B)- m-RNA; (C)- t-RNA; (D)- Ribosome; (E)- Anticodon and (F)- Codons.
Translation is the name of the process of formation of protein from the m-RNA strand. The process occurs in the cytoplasm of the cell where ribosomes are present. The m-RNA sequence is read by the anticodons on t-RNA and the correct amino acid is inserted into the polypeptide chain accordingly.
Ribosome is a nucleoprotein. It is the most important machinery for the synthesis of proteins. There are 2 subunits of protein a small and a large one. These subunits join together at the time of translation. There are two types of ribosomes: a 70S type ribosome and a 80S type ribosome.
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After being used by the major organs of the body, deoxygenated blood is transportedback to the right side of the heart by two large veins known as theand enters the, quickly passing by the openvalve, where blood then enters and fills thechamber.After filling, the cardiomyocytes contract, produce force on the blood and push openthevalve and allow blood to exit into theBlood now enters the circulation of the lung for gas exchange to occur. Onceoxygenated, blood returns to the heart from the lungs by way of four large vesselscalled the, blood then moves into theandpast the openvalve filling thechamber.From here, oxygenated blood is pushed past thevalve and intothewhere blood is pumped into the systemic circuit.
Deoxygenated blood is transported back to the heart by the superior and inferior vena cava, it enters the right atrium, and it passes the opened tricuspid atrioventricular valve to the right ventricle.
The cardiomyocytes of the right ventricle contract and push the blood through the pulmonary semilunar valves to the pulmonary arteries. The blood flows through the pulmonary system, where the gases are exchanged, and the blood is oxygenated.
Then the blood returns to the heart through the pulmonary veins to the left atrium and past the bicuspid atrioventricular valve to the left ventricle.
When the left ventricle contracts, the blood is pushed through the aortic semilunar valves into the aorta where it enters the systemic circulation.
Question 4(Multiple Choice Worth 2 points)
(01.01 LC)
Which of the following scenarios would most likely be considered pseudoscience?
OA team of scientists replicating another experiment.
O Generating a claim based on empirical evidence.
O The theory of relativity.
The belief that the stars determine our fate.
The belief that the stars determine our fate is a pseudoscience.
what is pseudoscience ?
pseudoscience can be defined as a combination of two words pseudo means genuine and science which indicate that its not genuine science or its fake science.
pseudoscience is works on opinion basis which are believed to be based on scientific method but actually these practices are not based on scientific method.
Pseudoscience involves explanations of beliefs, includes subjective ideas; Some errors includes Having contradictory information, Exaggerated and false claims, Reliance on bias rather than facts
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Use your periodic table of elements. Take any element from the first column, except for hydrogen and lithium, and answer the following questions:
What is the element's name and symbol?
Is it a metal, nonmetal, or metalloid?
Which family does it belong to?
How many protons, neutrons, and electrons does its neutral atom have?
Sodium is a soft metal. It has the property of being tarnishes when comes in contact with air. The atomic number of sodium is 11. The sodium metal is highly reactive in nature and hence cannot occur as a free metal.
Alkali metals are the elements that form alkali or bases when reacted with water. The alkali metal family consists of six elements. These are: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
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Answer:
What is the element's name and symbol?
The element's name is Sodium, on the periodic table its symbol is Na.
Is it a metal, nonmetal, or metalloid?
Sodium is an Metal
Which family does it belong to?
Sodium belongs to the family of Alkali Metals
How many protons, neutrons, and electrons does its neutral atom have?
Sodium has 11 protons, 11 neutrons, and 12 electrons
What is the phenotype of a black cat?A. blackB. bbC. BB or BbD. bb
We can assume that the black color of the cat is given by a dominant allele (B). We also have to consider that this is a tricky question, since they ask about the phenotype (trait, like color), instead of the genotype (alleles to a particular gene, like BB, Bb, or bb).
So the phenotype of a black cat is black, or the A answer option.
Hello, I need help with this. Please. I would very much appreciate it thank you
Why is sod valuable? a. loses fertility b. loses topsoilc. prevents soil erosion d. causes soil erosion
Sod or grass is valuable for an ecosystem because it prevents soil erosion, as stated in the
4. Chemical process that converts glucose wit
oxygen into energy (ATP) and carbon dioxide.
Cellular respiration is the process responsible for the conversion of glucose in the presence of oxygen into energy (ATP) as well as carbon dioxide.
Cellular respiration involves the breakdown of food materials inside the cell in order to release energy. Glucose is the substrate for the process of cellular respiration. The first stage of cellular respiration takes place in the cytoplasm. The glucose molecule is broken down through a series of enzyme-catalyzed reactions into two molecules of pyruvic acid, which is termed as Glycolysis.
The process of cellular respiration includes several bio-chemical reactions but it can be summarized in the form of following equation:-
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (ATP)
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You have a circular plasmid that is 5,000 bp long. After treating it with the ecori restriction enzyme, you loaded the plasmid dna in an agarose gel and ran gel electrophoresis. The results of the gel show two bands at the 2,000 and 3,000 bp marks on the ladder. How many ecori cut sites were present in the plasmid?.
Six ethanol-precipitated DNA fragments, ranging in size from 3,530 to 21,226 base pairs, make up the DNA/EcoRI Markers.
The method for calculating bp fragments is?Simply subtraction of the bp difference between the two REs yields the fragment size: 5198 bp - 5070 bp = 128 bp.Six ethanol-precipitated DNA fragments, ranging in size from 3,530 to 21,226 base pairs, make up the DNA/EcoRI Markers.When separating DNA fragments ranging in size from 100 bp to 25 kb, agarose gel electrophoresis is the most efficient method (1).Understanding the DNA's condition before to digestion is crucial. Plasmids are circular, and plasmids were the type of DNA employed in this experiment. One linear fragment results from a single circular incision. To obtain two linear pieces, like in Lane 2, you must cut it once more.To learn more about Plasmids refer to:
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If laci were mutated such that the lac repressor could no longer bind dna, what effect would this have on the regulation of the lac operon?.
The lac operon would be overexpressed and the repressor protein still wouldn't work correctly.
What does the lac operon's repressor do?The lac repressor protein is a tetramer made up of four identical subunits that prevents the lac operon from transcribing. The lacI gene, which is upstream of a lac operon it has its own promoter, produces the lac repressor.
What causes a repressor to be activated?Repressor. The met repressor is triggered when an amino corrosive binds to it. The repressor's presence on the Stranded dna prevents the creation of RNA. When the amino acid is absent, the repressor separates from the operator , RNA synthesis continues.
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What is the purpose of transcription?
The purpose of transcription is to create an mRNA copy of a gene, allowing the genetic material to leave the nucleus and go to the site where it can be assembled into a protein.
By severing the hydrogen bonds between the base pairs, an area of the DNA double helix is uncoiled by the enzyme DNA helicase.As exposed base pairs on the template DNA strands, complementary nucleotides from the nucleoplasm align up to them.Along the strand, the RNA polymerase enzyme forms phosphodiester linkages between neighbouring nucleotides.This procedure continues until the pre-mRNA is entirely produced and RNA polymerase reaches a stop codon.The mRNA strand then exits the nucleus after non-coding introns have been spliced out by the spliceosome's enzymes.describe the relationship between the functions of endosymbiotic organelles and their free-living ancestral counterparts
All organisms arose from a single common ancestor.
An endosymbiont or endobiont is any organism that lives inside the frame or cells of some other organism most often, though no longer continually, in a mutualistic relationship.
Bacterial endosymbionts result in dramatic phenotypes in their arthropod hosts, including cytoplasmic incompatibility, feminization, parthenogenesis, male killing, parasitoid protection, and pathogen blocking.
Endosymbionts, such as Wolbachia, Rickettsia, and Cardinium, are a type of bacteria generally located in arthropod species inclusive of bugs, spiders, crustaceans, and mites, in addition to other invertebrates along with filarial nematodesEndosymbiosis is a form of symbiosis in which the symbiont lives in the body of its host and the symbiont in an endosymbiosis is known as an endosymbiont.
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Which term matches this definition?
the study of living organisms
A. biology
B. geology
C. chemistry
D. astronomy
ITS A
Answer:
biology
biology studies living and no organism
Evaluate Clara's practices for the prevention of parasite infestation in the following scenario.
Last year, Clara lost thousands of dollars when her sheep herd was infested with tapeworms. She has
always been diligent about keeping the pens clean and ensuring a proper diet. She has also always given
her sheep plenty of freedom by allowing them to wander day and night, and she even protects them from
the hot weather by putting them out to graze in the cooler evening hours. She hopes that this year the
herd will be more fortunate.
I believe Clara's actions will lessen the parasite infestation. I also believe she might arrange for routine veterinary examinations of the sheep to make sure they are free of any parasites that might infect the entire flock.
Because producers can see the visibly ejected worms whereas they cannot see stomach worms, only their symptoms or eggs, tapeworms frequently cause greater anxiety among sheep and goat farmers than stomach worms (nematodes) (in the feces).
People and animals with spines that have intestines are home to tapeworms, which are flat, ribbon-shaped worms. One of three classes of parasitic worms, they are long, segmented worms from the class Cestoda.
The move-and-dose strategy won't frequently work because many sheep pastures can't produce hay. To control parasites in this situation, prophylactic deworming treatments must be given throughout the season.
Clara's activities will therefore reduce the parasite invasion, I can infer. To ensure that the sheep are free of any parasites that could infect the entire flock, she might arrange for routine veterinarian checks of the animals.
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Recessive lethal alleles tend to be more common than dominant lethal alleles in part because.
Dominant deadly alleles may not be displayed until adulthood, just as the phenotype of death may not be instantly manifested by the recessive fatal allele.
What are Recessive lethal alleles?When an organism possesses two copies of the deadly allele, a recessive lethal gene can code for either dominant or recessive features without actually causing death. Cystic fibrosis, sickle-cell anemia, and achondroplasia are a few examples of human disorders brought on by recessive lethal genes.Only dominant lethal alleles are inherited; only recessive deadly alleles can be passed down from parent to child.Both the homozygote and the heterozygote for the dominant lethal allele will exhibit the deadly phenotype if the mutation is triggered by that allele. The homozygote for the deadly allele will exhibit the lethal phenotype if the mutation is brought on by the recessive lethal allele. The majority of deadly genes are recessive.To learn more about recessive lethal alleles refer to :
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Which of the following observations would tell you that a cell is a prokaryotic cell? C. a flagellum D. DNA in the cytoplasm A. size of about 10 µm B. presence of a cell wall
Answer:
DNA in cytoplasm
Explanation:
As prokaryotes do not have a nucleus bounded by a nuclear membrane, the DNA will be prsent in the cytoplasm
In guinea pigs, rough coats (with lots of swirly cowlicks) are dominant over smooth coats. If a male homozygous dominant guinea pig is crossed with a female heterozygous guinea pig, what are the possible genotypes and phenotypes of the offspring? Complete the Punnett square and the percentages of rough and smooth coated offspring.
***Please follow all Punnett square rules to complete this question. (Letters and numbers, only)
Please use the following: Rough = R and Smooth = r
offspring 1 offspring 2
offspring 3 offspring 4
% rough
% smooth
Word Bank:
RR 50 rR 75 0 R R Rr RR rr25 Rr 100
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The children will have genotypes that are 1:1 RR and Rr. All of the phenotypes of the progeny will have coarse coats.
What is guinea pigs?Genotypes are the allelic components of an organism's genetic makeup. Phenotypes are the outward manifestations of an organism's physical characteristics. Two RR genotypes and two Rr genotypes are observed as a result.
As a result, the genotypes are 1:1 RR and Rr. All of the offspring have rough coat phenotypes since R stands for rough coats.
A few of the enticing characteristics of guinea pigs include their small size, mild temperament, and friendliness. They need particular care and consideration, though, just like all companion animals.
Therefore, The children will have genotypes that are 1:1 RR and Rr. All of the phenotypes of the progeny will have coarse coats.
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a person's red blood cells have both a and b antigens. the person has no anti-a or anti-b antibodies. what is ther person's blood type?
The person with both a and b antigens but no anti-a and anti-b antibodies has AB blood group.
The ABO system distinguishes 4 major blood types: Red blood cells in blood group A have A antigens and plasma blood group A has anti-B antibodies. Plasma blood group B has B antigens and anti-A antibodies. O - has no antigens, but the plasma blood group has both anti-A and anti-B antibodies. Blood group AB lacks antibodies but possesses both A and B antigens.
There are a total of 8 blood types, each of which can be either RhD positive or RhD negative. Sometimes a protein known as the RhD antigen, another antigen, is present in red blood cells. If RhD antigen is present, your blood group is specifically positive, and if it's not then the blood group is negative.
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The rate at which a specific allele for red flower color appears within a population is known as its.
The rate at which a particular allele manifests itself within a population is known as the allele frequency (or gene frequency). In population genetics, evolution is referred to be a shift in an allele's frequency within a population.
The term "prevalent allele" refers to what kind of allele?Wild-type alleles are the most abundant alleles in a population. true. Usually, recessive alleles result in an increase in the production of functional proteins. false. When heterozygous for a recessive illness allele, a person typically has 50% of the normal protein levels.
What does the name allele mean?The alternative form or variations of a gene are referred to as "alleles." Individuals inherit one allele from each parent for each autosomal gene, and we routinely classify the alleles. They are typically referred to as wild-type, mutant, aberrant, or normal alleles.
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In ____, Breanna Holbert became the first African American female elected as national FFA president.
A. 2016
B. 2018
C. 2019
D. 2020
What is molecular genetic manipulation
Please explain
Answer:
Molecular genetics is the manipulation of an organism's genome. There have been many uses of MG outside the farm gate for generating customised bacterial cultures. When MG is used in dairy animals, it results in transgenic animals with new traits that can't be achieved through standard breeding techniques. Inside the farm gate, MG plays a role in animal breeding. Causative mutations or linked genetic markers that cause phenotypic differences are being identified using MG. This approach aims to disseminate superior genetics to commercial farmers effectively and efficiently.