Answers
Answer:
It should have taken over 2500 million years. This is owing to many natural disasters as well as the rotation of the planet, which resulted in the separation of landscapes.
Explanation:
Related Questions
Scientists have discovered a new marine bacterial species called Vibrio nuigii. They have isolated ten strains of this bacterium and determined their whole genome sequences. Only one of the strains (which the scientists named Vir1) is virulent and causes disease in oysters. Describe three ways in which the scientists could use their knowledge of the bacterial genome sequences to identify the genes responsible for virulence.
Answers
Answer:
1-by transfecting small interfering RNAs against target genes of interest
2-by using comparative genomics strategies in order to infer functional relationships among target genes of interest and homologous genes responsible for virulence in other bacteria (e.g., antibiotic resistance genes)
3- by inducing mutations through site-directed mutagenesis in order to study gene function (i.e., by examining the effects of knockout mutations)
Explanation:
Whole-genome sequencing (WGS), also known as complete genome sequencing, refers to Next Generation Sequencing technologies that allow the obtention of the entire genetic sequence of an organism/cell, which can be used as a reference genome to understand gene function, evolutionary relationships, etc. The information provided by WGS technologies allows making many different types of genetic analyses in order to understand gene function. First, the nucleotide reference sequence can be used to design complementary small interfering RNAs that trigger degradation of target messenger RNAs (mRNAs) by the RNA interference (RNAi) pathway, thereby inhibiting gene function (in this case, inhibiting genes associated with virulence in the bacterial strain). Second, a reference genome is required to perform bioinformatic data analyses in order to identify homologous genes associated with virulence in evolutionarily related bacteria, allowing identify, for example, antibiotic resistance genes or sequence polymorphisms (e.g., single nucleotide polymorphisms, SNPs) associated with gene function. Third, the information provided by a reference genome can also be used to trigger site-directed mutagenesis (for example, by using the highly precise CRISPR-Cas9 genome editing technology) in order to knock out specific genes of interest and thus analyze if the bacterial strain is still infectious.
para realizar un Proyecto debemos primero buscar la necesidad. ¿Por qué?
Answers
Answer:
necesitamos conocer cuales son los motivos que impulsan la fabricación/obtención del producto y/o servicio
Explanation:
Un proyecto se considera un esfuerzo temporario asociado a un conjunto de actividades las cuales son planificadas de antemano a fin de producir un determinado producto y/o servicio. Por ejemplo, en el área de biología molecular y biotecnología, un proyecto podría consistir en la planificación de las actividades necesarias para sintetizar una hormona en particular (insulina) utilizando plantas como biorreactores. Las etapas o fases por las cuales debe transitar cualquier proyecto de índole tecnológico son: 1-planteamiento de un problema: cual es la necesidad que impulsa el desarrollo del bien y/o servicio; 2-búsqueda de información relacionada al proyecto: en el ejemplo citado, cual es la especie de planta más factible de ser utilizada como biorreactor para producir insulina, cuales son los materiales requeridos para llevar a cabo este proceso, etc; 3-diseño y planificación del proyecto: cuales son los plazos estipulados para la puesta a punto del proyecto, cómo obtener los recursos necesario para llevar a cabo estas actividades, evaluación de los riesgos a los que se enfrenta el producto/servicio, etc; 4-construcción del proyecto: consiste en llevar a cabo las actividades delimitadas en el paso anterior, y 5-evaluación y divulgación: consiste en la obtención final del producto y/o servicio, como así también de las medidas de publicidad (divulgación) que tienen como objetivo crear un nicho de mercado para el producto/servicio.
16. Which process has most likely occurred when new traits appear in a species?
Answers
Mutations in these genes can produce new or altered traits, resulting in heritable differences (genetic variation) between organisms. ... Evolution occurs when these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift.
Mutations in genes produce new or altered traits, that leads to heritable differences (genetic variation) between organisms.
What is heredity?Heredity is defined as the sum of all biological processes through which particular characteristics are transmitted from parents to their offspring.
Evolution occurs when these heritable differences become more common in a population, either non randomly through natural selection or randomly through genetic drift.
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Based on your knowledge of roots and affixes which is most likely definition of the word microscopic?
Answers
Explanation:
Microscopy is the science of investigating small objects and structures using a microscope. ... Microscopic means being invisible to the eye unless aided by a microscope.
When O2 binds to heme in hemoglobin, the ion is drawn into the plane of the porphyrin causing a conformational change that is transmitted to adjacent subunits enhancing the for additional O2 binding. Group of answer choices Fe2 ; affinity Mg2 ; folding Mg2 ; planarity Fe3 ; affinity
Answers
Answer: Fe2 ; affinity
Explanation:
Hemoglobin is the specialised protein which are present in red blood cells which gives it the ability to carry oxygen to the tissues and return carbondioxide from the tissues to the lungs.
The hemoglobin is made up of
--> a heme group: this consists of a ferrous iron ( Fe2) and a surrounding porphyrin ring.
--> globin.
As the haemoglobin molecule loads and unloads oxygen (O2) the individual globin chains in the hemoglobin molecule move on each other. When oxygen is unloaded the beta chains are pulled apart, permitting entry of the metabolite 2,3-diphosphoglycerate resulting in a lower affinity of the molecule for oxygen and higher affinity for carbondioxide.
Also, when the partial pressure of oxygen (PO2) in the blood is high, the beta chains move close together, O2 binds to heme in hemoglobin, the ion Fe2 is drawn into the plane of the porphyrin causing a conformational change that is transmitted to adjacent subunits enhancing the AFFINITY for additional O2 binding.
Is this the right answer?
Answers
Answer:
Yes!
Explanation:
The sperm does ferbilaise the egg. So its Mendel and Gene
how does phagocytosis occur in the lungs?
Answers
Answer:
Phagocytic defense in the normal lung is shared principally by two kinds of cells - alveolar macrophages that reside on the air surface and roam the alveoli and PMNs that circulate in the intravascular space or are stored transiently in areas adjacent to the capillary-alveolar interface (marginated in capillaries)
Explanation:
mark brainliest pls
what are the two most common alkaline earth metals?
Answers
Answer:
CalciumMagnesiumExplanation:
stay safe healthy and happy..g in sickle cell anemia, there is a mutation in the beta subunit of hemoglobin where a glutamic acid is replaced with valine. How would that change affect the molecule
Answers
Answer and explanation:
Sickle cell anemia is a type of anemia that occurs because of a mutation in the HBB gene, which codifies for the beta subunit of hemoglobin, producing an abnormal beta-globin called Hemoglobin S o HbS. This anomalous beta subunit is a product of the replacement of the amino acid glutamic acid by the amino acid valine at position 6, resulting in a beta-globin that forms a long and rigid molecule turning red blood cells shape into a sickle one, condemning erythrocytes to a premature death (which will cause the anemia). Another complication patients with sickle cell anemia can have is the blocking of blood vessels because of the abnormal and rigid shape of their red blood cells.
An enzyme that breaks DNA, dispels the tension, and reseals the strand ahead of a DNA replication growing fork is called a(n):
Answers
Answer:
Topoisomerase
Explanation:
Topoisomerases are enzymes that produce changes in the topology of the DNA during replication, transcription, traduction, or reparation processes. They can cut one or both strands and in order to relieve torsional stresses in the supercoiled structure of DNA. With this, they help to maintain the chromosome's integrity. There are two types of topoisomerases: topoisomerase I (it cuts only one strand of DNA) and topoisomerase II (it is able to cut both strands of DNA).
holaaaa Soy nueva en brainly, no mentira solo cambie de usuario
Answers
Answer:
¡Hola! ¡Cómo estás! ¿Te gusta el dibujo de mi gato? XD
Explanation:
Que bien. Y brainliest porfavor?! :D
Various strains of bacteria are able to transfer genes to eukaryotic hosts. This process of horizontal gene transfer often results in the formation of enzymes in the host organism that assist in metabolic pathways. What is the most likely explanation for why bacterial genes are able to successfully transfer genes that produce enzymes in eukaryotic cells?
Answers
Answer:
Due to conjugation.
Explanation:
Bacterial genes are able to successfully transfer genes that produce enzymes in eukaryotic cells because of conjugation process. Conjugation is a process by which one bacterium transfers its genetic material or genes to another bacterium or cell through direct contact with it. During conjugation, the bacterial cells serves as the donor of the genetic material, and the eukaryotic cell serves as the recipient that receives the genes.
BEST ANSWER GETS BRAINLIEST!!!!!!!
When a substance shifts from one state of matter to another without changing its molecular composition, it undergoes a chemical change.
True
False
Answers
Answer:
false
Explanation:
because I have don't get be few job days people and of will am to a on in the next time we come in for our meeting tomorrow morning to get some the information on how we will be working with our current client on our own so I don't am the a to make do I get have job that I am not going the the process best I I'm you me the chain
Answer:
no it's false.
since chemical change require change in chemical composition of a substance
and mostly a new substance is formed during a chemical change .
and here no such thing is observed so it's not a chemical change
Who is your favorite singer and song.....
mine is Selena Gomez, Justin Bieber , Arianna Grande...
btw I am Indian
Answers
Crabs have paddle-like appendages to help them swim called
———————————————
Answers
Answer:
The correct answer is - Swimmerets.
Explanation:
Swimmerets are small paddle-like appendages that are modified pairs of legs near the rare. or attached to the abdomen. These paddle-like appendages are help crabs to swim and also helps in carrying and aerating eggs.
These are present in lobster, and shrimps as well as swimming crabs. These are the modification of the legs of the crabs in order to better swimming and brooding of the eggs.
what is not a function of the respiratory system?
A.
Inhaling and exhaling
B.
Removing carbon dioxide
C.
Providing lungs with nutrients
D.
Intaking oxygen
Answers
b
Explanation:
I don't know the explanation
Brendan made a diagram to compare and contrast the benefits of two types of social behavior.
The diagram shows 2 overlapping circles labeled Flocking and Herding. There is a z in Herding.
Which description belongs in the area marked "Z"?
reproduction
protection
foraging
hydrodynamic efficiency
please help this is an exam and its timeddddd
Answers
Answer:
Which description belongs in the area marked Z? Protection.
Explanation:
Have a great summer.
Herding is refer to as the act of bringing individual animals together into a group, maintaining the group, and moving the group from place to place or any combination of those. The description belongs in the area marked "Z" is foraging. Thus, the correct option is C.
What is flocking?A flocking is refer to as the large number of birds, especially those gathered together for the purpose of migration. For example, a large number of animals, especially sheep or goats kept together and migrate.
Foraging behavior includes all the methods by which an animal acquires and utilizes sources of energy and nutrients. This also includes the location and resources consumption, as well as their recapture and storage, within the context of the larger community.
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!!20 POINTS!!
Human use a (an) ____________ circulatory system to remove waste.
A. Open
B. Closed
C. Capillariy
D. Continuous
Answers
Answer:
its continuous
ALL organisms, living and non-living, in an ecosystem are made of matter. *
TRUE or FALSE
Answers
Answer:
False.
Explanation:
Matter is anything that has mass and takes up space. Therefore, nonliving things such as rocks, glaciers, stars, etc. are made of matter.
___________ is a body building food A gram B wheat C Rice D Tea
Answers
Answer:
c. Rice
Explanation:
Foods to eat include ( 7 ): Meats, poultry and fish: Sirloin steak, ground beef, pork tenderloin, venison, chicken breast, salmon, tilapia and cod. Dairy: Yogurt, cottage cheese, low-fat milk and cheese. Grains: Bread, cereal, crackers, oatmeal, quinoa, popcorn and rice.
source : https://www.healthline.com/nutrition/bodybuilding-meal-plan#:~:text=Foods%20to%20eat%20include%20(%207,%2C%20quinoa%2C%20popcorn%20and%20rice.
The common grackle is a species of robin-sized blackbirds that are common (hence the name) over most of the United States. Long tails are dominant to short tails. A female short-tailed grackle mates with a male long-tailed grackle that had one parent with a long tail and one parent with a short tail. Use the genetics vocabulary we went over this school year to complete the following statements. (answer1] percent of the genotype would have the same genotype as the male/father.
Answers
Answer:
LL
Ll
ll
Explanation :
have uh good day :)))
True or False; Carbohydrates and Proteins are organic and they contain CHO.
Answers
he conversion process where nitrogen gas combines with hydrogen to form ammonium ions, which is accomplished through the intense energy of lightening, or when air in the top layer of soil comes into contact with certain bacteria, is known as
Answers
Answer: The conversation process where nitrogen gas combines with hydrogen to form ammonium ions is known as THE ACTION OF THUNDERSTORMS while when air in the top layer of soil comes into contact with certain bacteria, nitrogen in the air is converted by NITROGEN- FIXING MICROORGANISMS.
Explanation:
About 79% of air is composed of gaseous nitrogen. However, only a few microorganism can make use of this nitrogen. The important sources of nitrogen for plants and most living organisms are the inorganic nitrogenous compounds in soil. In nature, nitrogen is constantly being removed from the soil and returned to it through the NITROGEN CYCLE
Conversation of gaseous Nitrogen into nitrogenous substances such as ammonium and amino-compouds are carried out by:
--> The action of thunderstorms, and
--> NITROGEN- fixing microorganisms.
During thunderstorms, Nitrogen reacts with oxygen to form nitric oxide. The nitric oxide is oxidizes to Nitrogen peroxide which dissolves in rainwater to form nitric and nitrous acid. When these acids enter the soil, they combine with mineral salts to form nitrates. The nitrates then, dissolve in soil water and are absorbed by the plants. These nitrates are converted into plant proteins and become part of the plant body.
Some microorganisms such as the Nitrogen fixing microorganisms are able to absorb nitrogen from the atmosphere and change it into amino-compouds and proteins. Examples of such microorganisms include:
--> the free living bacteria: these include the azotobacter and clostridium
--> the symbiotic bacteria: the rhizobium which is found in the root nodules of leguminous plants
For a majority of humans, one part of the ___ cortex is larger on the ___side of the brain than on the oppposite side.
Answers
g In transcription, the 3'-hydroxyl group of the growing RNA strand: Group of answer choices NONE OF THESE binds to the 5' ribose. attacks the outermost phosphorous group of the incoming nucleotide. ALL OF THESE attacks the 5' hydrogen of the incoming nucleotide. interacts with a positively charged metal ion in the active site.
Answers
Answer:
attacks the outermost phosphorous group of the incoming nucleotide.
Explanation:
Transcription is the biological process where RNA is formed. As you may already know, RNA is an extremely important nucleic acid for genetic processes and the production of proteins. The transcription has three steps that are called start, elongation and end. In the elongation phase, the RNA strand is growing, at this time, RNA polymerase, which is the enzyme responsible for RNA elaboration, places the nucleotides, in the RNA strand, in the 5' - 3' direction. This enzyme causes the hydroxyl, which makes up the nucleotide at the 3' end of the forming RNA, to attack the phosphorus present in the incoming ribonucleotide.
Hyperglycemia (elevated blood sugar levels), such as would happen in diabetics, can damage the glomeruli.
a. True
b. False
Answers
Answer:
True
Explanation:
Hyperglycemia which means high Glucose level in the blood as a result of lack of insulin can damage the glomeruli. This interfere with the function of the glomeruli. Normally glomeruli fiters blood and remove nutrients to form urine but hyperglycemia will affect it's negatively and will make protein to leak from the blood into the urine. This can also lead to glomeruli called glomerulosclerosis.
Identify how the physical barriers of the immune system protect the body against pathogens. Check all that apply.your nose produces oil to keep pathogens from entering the body through your noseskin contains tightly packed cellsskin is tough, flexible, and waterproofyou cough when a pathogen enters your mouthyou sneeze when a pathogen enters your nose
Answers
Answer:
Skin contains tightly packed cells.Skin is tough, flexible, and waterproof.You cough when a pathogen enters your mouth.You sneeze when a pathogen enters your nose.Explanation:
The physical barriers of the immune system prevent infections since they stop or expel any pathogen that enters the body. The skin with its cells tightly packed and characteristics, the endothelia, and mucous membrane, like the one in our nose, are physical barriers. They stop antigens from infecting our body since they can remove them by sneezing, coughing, or shedding.
Answer:
skin contains tightly packed cells
skin is tough, flexible, and waterproof
you cough when a pathogen enters your mouth
you sneeze when a pathogen enters your nose
Explanation:
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Words may be used more than once.
1. Excess numbers of these cells cause leukocytosis
2. These formed elements number 4,800 to 10,800 cells/mm3 of blood
3. Granulocytes and agranulocytes are classified as types of these cells
4. Excess of these cells cause polycythemia
5. Type of cell produced in response to erythropoietin
6. Cell fragments that form from the rupture of a megakaryocyte
7. Immature form of this cell is called a reticulocyte
8. Type of cell that is shaped like a biconcave disc
9. Type of cell that averages 5 million cells/mm3 of blood
10. Type of cell fragment involved in hemostasis
Answers
Answer:
The correct answer is -
1. Leukocyte is the cell that is present in excessive numbers of these cells cause leukocytosis
2. Leukocyte are normally formed elements number in the range of 4,800 to 10,800 cells/mm3 of blood
3. Granulocytes and agranulocytes are classified as types of Leukocyte cells that plays role in immunity
4. Erythrocyte cause polycythemia if present in excess
5. Erythrocyte is a type of cell produced in response to erythropoietin
6. Platelets are responsible for forming from the rupture of a megakaryocyte
7. reticulocyte Immature form of Erythrocyte
8. Erythrocyte is shaped like a biconcave disc
9. Erythrocyte averages 5 million cells/mm3 of blood
10. Platelet involved in hemostasis
You wouldn't be able to shower without this element!
Answers
Answer:
h²o or water
Explanation:
it says I need to have 25 or more characters so this is just my fill in
A high concentration of which substance is indicated by a green coloration of estuarine water?
A.
oxygen
B.
salt
C.
silt
D.
chlorophyll
Answers
Answer:
The most important light-absorbing substance in the oceans is chlorophyll, which phytoplankton use to produce carbon by photosynthesis. Due to this green pigment - chlorophyll - phytoplankton preferentially absorb the red and blue portions of the light spectrum (for photosynthesis) and reflect green light.