Answer: RNA polymerase is the enzyme that transcribes DNA into RNA.
Explanation:
plz help me u have to match the word with the defineition BRAINLIESTTTTTTTT and u must do all of them or u will get reported
Answer:
i am so sorry
good luck
Explanation:
Las estructuras que facilitan la union de las venas y arteriasel intercambio gaseosos entre los dintistos tejidos y la sangre que circula se denominan.....
Answer:
Intercambio de oxígeno y dióxido de carbono
Por
Rebecca Dezube
, MD, MHS, Johns Hopkins University
Última revisión completa jun. 2019
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La principal función del aparato respiratorio es inhalar oxígeno y eliminar dióxido de carbono. El oxígeno inhalado penetra en los pulmones y alcanza los alvéolos. Las capas de células que revisten los alvéolos y los capilares circundantes se disponen ocupando el espesor de una sola célula y están en contacto estrecho unas con otras. Esta barrera entre el aire y la sangre tiene un grosor aproximado de una micra (1/10 000 cm). El oxígeno atraviesa rápidamente esta barrera aire–sangre y llega hasta la sangre que circula por los capilares. Igualmente, el dióxido de carbono pasa de la sangre al interior de los alvéolos, desde donde es exhalado al exterior.
La sangre oxigenada circula desde los pulmones por las venas pulmonares y, al llegar al lado izquierdo del corazón, es bombeada hacia el resto del organismo (véase Función del corazón). La sangre con déficit de oxígeno y cargada de dióxido de carbono vuelve al lado derecho del corazón a través de dos grandes venas: la vena cava inferior y la vena cava superior. A continuación, la sangre es impulsada a través de la arteria pulmonar hacia los pulmones, donde recoge el oxígeno y libera el dióxido de carbono.
Intercambio de gases entre las alveolas y los capilares
Para mantener la absorción de oxígeno y la emisión de dióxido de carbono, entran y salen de los pulmones entre 5 y 8 L de aire por minuto, y cada minuto se transfiere alrededor del 30% de cada litro (cerca de tres décimos de galón) de oxígeno desde los alvéolos hasta la sangre, aun cuando la persona esté en reposo. Al mismo tiempo, un volumen similar de dióxido de carbono pasa de la sangre a los alvéolos y es exhalado. Durante el ejercicio, es posible respirar más de 100 L de aire por minuto y extraer de este aire 3 L de oxígeno por minuto. La velocidad de entrada del oxígeno en el organismo es una medida importante de la cantidad total de energía consumida por este. La inspiración y la espiración se llevan a cabo gracias a los músculos respiratorios.
PLS HELP
On the image, which letter represents the enzyme?
Answer:The correct answer is B
Explanation:
I hope this helps you out!
From the image, the letter that represents the enzyme is B.
Enzymes are substances, made up of proteins, which are capable of speeding up the metabolic reactions in the human body.
There is a theory that explains the mechanism of action of enzymes. This is called the enzyme lock and key theory.
This theory states that enzymes bind to substrates temporarily forming enzyme-substrate complex that appears like the fitting of a lock and key.
This simply means that the same way a particular key can only fit into a particular lock is the same way a particular substrate must combine with a particular enzyme for a reaction to occur.
From the diagram,
B represents the enzyme with an active site which must fit into a substrate
A represents the substrate.
Therefore, the the letter that represents the enzyme is B.
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Which step is meiosis is shown in the image below ?
Anaphase I of meiosis in shown in this image.
What do you mean by meiosis?Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells.
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Like mitosis, meiosis also has distinct stages called prophase, metaphase, anaphase, and telophase.
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The process by which organisms with favorable traits pass them onto offspring is called...
A. Mutations
B. Natural selection
C. Adaptations
D. Fitness
what is environment?
Answer:
the surroundings or conditions in which a person, animal, or plant lives or operates.
Explanation:
Answer:
An enviroment is an ecosytem made up of all living things.
(50 Points)
Select the correct location on the image.
In pea plants, white seed coat is a recessive trait and gray seed coat is a dominant trait. Which offspring have a white seed coat?
The highlighted ones are the answers to chose from (There is only one)
Answer:
gg
Explanation:
Not 50 pts but... recessive usually means it's the tiny letters.
Dominant traits have capital letter GG or Gg, so the dominant trait is going to show as the phenotype.
Which organism is the most closely related to humans? Explain.
Answer:
Chimpanzee
Explanation:
It is the closest to humans
Flowes come in red, blue and purple colors. Cross 2 purple flowers what percent of the offspring will be blue
9. If the concentration of water inside a cell is lower then outside the cell, what will be the net
movement of water molecules be? *
(1 Point)
a) Into the cell.
b) Out of the cell.
Answer:
a) Into the cell.
Explanation:
The water molecules outside the cell would move into the cell until there is no net movement of water molecules. This process is known as osmosis.
Osmosis is the movement of molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane until the concentrations across the membrane are equal. That is, there is no net movement of molecules across the membrane.
Match each relationship description to the correct corresponding relationship
Answer:
where is the entire question??
The carbon cycle ensures that carbon is not lost. Which is another important benefit of the carbon cycle
Answer: The carbon cycle helps regulate Earth's temperature.
Which of the following factors is most likely to contribute to gene flow between the
two geese populations?
Answer:
D.migration
Explanation:
The factor that should be contributing to gene flow between the two geese populations is migration.
What is migration?It is the movement that should be moved to another place. It can be the large people, or animals.
So based on this, we can conclude that the factor that should be contribute to gene flow between the two geese populations is migration.
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Why is it important for gametes to go through meiosis
Answer: Because Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occ Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.ur, as it results in the formation of gametes (sperm and eggs). Hope this helps have a awesome day/night❤️✨
Explanation:
HELP ASAP ILL MARK BRAINLIEST
Which choice gives the order of a chain of events that show cause and effect relationships that results from human activity?
A. increased carbon dioxide in the atmosphere; increased water vapor in the atmosphere; increase in severe storms; increase flooding
B. increased water vapor in the atmosphere; increase in severe storms; increased carbon dioxide in the atmosphere; increase flooding
C. increased water vapor in the atmosphere; increased carbon dioxide in the atmosphere; increase in severe storms; increase flooding
D. increased carbon dioxide in the atmosphere; increase flooding; increased water vapor in the atmosphere; increase in severe storms
Answer:
D
Explanation
carbon dioxide is enhanced by human activity as it icrease it leads to many consequences so B and C are canceled
increasing carbon dioxide does not increase the water vapor immediatly
so A is canceled
so the left answer will be D
The choice that provides the ordering of the chain of events should be option D where the carbon dioxide should be increased.
What is carbon dioxide?It should be treated as colorless and nonflammable gas at the normal temperature and the pressure. Also it comprise of one carbon atom and 2 oxygen atoms. Here it should be enhanced by the human activity due to which the flooding should be increased, water vapor is also increased also the storms too.
Therefore, the option d is correct.
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For a long time scientists have studied the cells of complex organisms. Scientists have discovered that
Answer:
Qweers
Explanation:
Fggs
Scientists have discovered the function of the cell of complex organisms according to their structure.
What is a living cell?The fundamental building blocks of form and operation in living things are cells. This implies that cells make up an organism's components and carry out all of its operations and functions.
The cell membrane, the nucleus, and the cytoplasm are the three primary components of a cell.
They provide the body structure, absorb nutrients from meals, turn those nutrients into energy, and perform certain tasks.
Therefore after a long studied scientist discovered the function of the cell, which perform to do many processes inside the cell of complex organisms.
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Which of the following occurs during mitosis but
not during meiosis I ?
(A) The chromosomes are pulled to opposite
poles of the spindle apparatus.
(B) The chromatids of each chromosome are
separated.
(C) The nuclear envelope breaks down.
(D) Both synapsis and crossing-over take place.
(E) The diploid number of chromosomes is
reduced to the haploid number.
Answer:
B) The chromatids of each chromosome are separated.
The chromatids of each chromosome being separated doesn't occur in
meiosis I.
Meiosis is a type of cell division that produces four unique daughter cells
as a result of it undergoing two rounds of cell division. It is the cell division
that produces sperm and egg cells.
The meiosis I stage involves the resegregation of the chromosomes in the
diploid cell which has previously undergone division. This then produces
four haploid daughter cells which have unique features.
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why breeding sows and boars should come from good mothers. (pls no long explaining)
Study the illustration below of the plate tectonics affecting the continent of Africa. Divergent plates are causing the East African Rift Zone to spread. This area is a deep valley surrounded by mountains, similar to a mid-ocean ridge. What do you predict will eventually happen at the East African Rift Zone?
African plate tectonics showing the Eurasian Plate, Arabian Plate, Indian Plate and African Plate (Nubian) and (Somalian). A rift zone is shown extending from the edge of the Arabian Plate through the Indian Plate and extending into the African Plate (Somalian).
© 2015, Brooklyn College
Lake Victoria will shrink and disappear as all of the plates converge.
The African plate will grow larger as all of the plates converge.
Water from the Gulf of Aden and the Indian Ocean will flow into the rift and flood the area.
The Indian Ocean will shrink and disappear as the Rift Zone gets larger.
Answer:
C
Explanation:
took the test
The things that you will predict will eventually happen at the East African Rift Zone are the Water from the Gulf of Aden and the Indian Ocean will flow into the rift and flood the area. Thus, the correct option for this question is C.
What is plate tectonics?Tectonic plates are the types of crustal plates that are gigantic pieces of the Earth's crust and uppermost mantle. A crustal plate may be defined as a type of large block or tabular section of the lithosphere that significantly reacts to tectonic forces as a unit and moves as such.
The movement of the crustal plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent, where plates move apart; and transform, where plates move sideways in relation to each other. Due to this, the water from the Gulf of Aden and the Indian Ocean will flow into the rift and flood the area.
Therefore, the correct option for this question is C.
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justify that fluorine cannot exist monoatomic from nature
Answer:
Due to incomplete outermost shell.
Explanation:
Fluorine cannot exist monoatomic in nature because of its incomplete outermost shell. This incomplete outermost shell makes Fluorine more reactive and it can only be stable if it makes bond with other atoms through sharing of electron i. e. covalent bond or by complete transfer of electron i. e. ionic bond. This bond making completes its outermost shell and the Fluorine attain stability so that's why the Fluorine cannot exists in monoatomic in nature.
When an enzyme was added that destroyed carbohydrates from the heat-
killed S strain and added to the live R strain, did transformation occur? (Did
transformation happen without the carbohydrates?)
Yes or No
Cancer is caused by out of control
Answer:
what do you mean by that?
Explanation:
Answer:
Cancer is caused by mutated, or out of control, cells
Explanation:
This picture shows examples of a cross section of human skin.
The integumentary system could best be compared to-
Answer:
i don"t know sorry
Explanation:
ask some one
tornadoes occur because a ___ air collides with ___ air. Please help!!
Flowers without petals are called_____
a-complete flowers.
b-eudicot flowers.
c-incomplete flowers.
d-monocot flowers.
Answer:
Letter A.
hope it help ❤️
What is the difference in the function of the glycoprotein structures of an HIV virion and the cilia of an animal cell?
The function of the glycoprotein structures of an HIV virion is the envelope glycoprotein (Env) performs two functions that are very crucial for replication cycle of HIV and these are
binding to a receptor and a coreceptor by using one of its two noncovalently associated subunitsfusing with the plasma cell membranes,which is mediated by the otherThe functions of the cilia of an animal cell are
to move water relative to the cell in a regular movement of the cilialocomotion is the other important function of ciliaWhat is the main difference between function of cilia and glycoprotein structures of an HIV virion?The main function of the cilia is locomotion and sensory function and the main functions of glycoprotein structure of an HIV virion is binding to a receptor and fusing with the plasma cell membranes.
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1. How are the structures of DNA in prokaryotes and eukaryotes the same?
The DNA is packaged into several linear chromosomes.
They both have a singular circular chromosome.
They both have a sugar and a phosphate group backbone.
The DNA histones are present in the nucleosomes.
2. How are the structures of DNA in prokaryotes and eukaryotes different?
Prokaryotes have DNA in circular chromosomes, and eukaryotes have linear chromosomes.
Prokaryotes have DNA in linear chromosomes, and eukaryotes have circular chromosomes.
DNA in prokaryotes is circular and lacks sugar and phosphate backbones.
DNA in eukaryotes is circular and lacks sugar and phosphate backbones.
Answer:
1. Option C, They both have a sugar and a phosphate group backbone
2. Option A, Prokaryotes have DNA in circular chromosomes, and eukaryotes have linear chromosomes.
Explanation:
1. Both the circular and linear DNAs in prokaryotes and eukaryotes respectively are made up of sugar-phosphate backbone. However, the arrangement is different due to which they have different shapes. Thus, option C is correct
2. Eukaryotes have multiple linear DNAs while prokaryotes have circular DNA having simplified structure.
Thus, option A is correct
What are several ways that humans alter the natural habitat?
Answer:
cuting trees, killing animals, and pollution.
Answer:
"Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water."
Explanation:
sources: nationalgeographic
If a diploid cell has 20 chromosomes, how many chromosomes will be in its haploid cell? If a germ cell has 10 chromosomes, how many chromosomes will be in its somatic cells? If a cell in G1 phase has 4 chromosomes, how many chromosomes will it have by the end of meiosis? If an unknown cell is going through mitosis, is it a germ cell or a somatic cell? By the time an unknown cell finishes meiosis, is it a haploid or somatic cell?
Answer:
20
Explanation:
I'm randomly guessed
The three domain system resulted in dividing all life into three ____, called ___, ___, and ____.
Answer:
systems
Archaea
Bacteria
Eukarya
Explanation:
The three domain system resulted in dividing all life into three systems, called Archaea, Bacteria, and Eukarya.
Hope this helps! :)