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.
Which organism is the most closely related to humans? Explain.
Answer:
Chimpanzee
Explanation:
It is the closest to humans
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.
Stem cells in plants are referred to as?
1. merimex
2. meristems
3. stalk stem cells
4. special stem cells
Flowes come in red, blue and purple colors. Cross 2 purple flowers what percent of the offspring will be blue
The process by which organisms with favorable traits pass them onto offspring is called...
A. Mutations
B. Natural selection
C. Adaptations
D. Fitness
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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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:
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! :)
(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.
I need help with 5 science questions :)
Answer:
1. . For example, lake trout are native to the Great Lakes, but are considered to be an invasive species in Yellowstone Lake in Wyoming because they compete with native cutthroat trout for habitat.
2. Japan
3. Kudzu was introduced from Japan to the United States at the Philadelphia Centennial Exposition in 1876 as an ornamental and a forage crop plant. The Civilian Conservation Corps and southern farmers planted kudzu to reduce soil erosion.
4. Kudzu grows out of control quickly, spreading through runners (stems that root at the tip when in contact with moist soil), rhizomes and by vines that root at the nodes to form new plants. Once established, kudzu grows at a rate of one foot per day with mature vines as long as 100 feet.
5. Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Severe mammal declines in Everglades National Park have been linked to Burmese pythons. ... Raccoons and opossums often forage for food near the water's edge, which is a habitat frequented by pythons in search of prey.
Explanation:
hope this help bae
The white blood cells in the lungs release protease. Suggest the function of this enzyme in the white blood cells in the lungs.
( Pls don't answer for points. Serious answers only )
Answer: Protease is an enzyme which causes break down of proteins by converting them into smaller polypeptides or amino acids.
Explanation:
Proteases are the enzymes that are necessary for the functioning of the lungs. They cause the regeneration and repair of white blood cells as protease can digest connective tissue elements. They are responsible for generating an inflammation response during infection caused by a pathogen. Thus prevents lung infection. Inhibition of the anti-proteolytic mechanism is essential for the controlling microbial infection and lung inflammation.
why breeding sows and boars should come from good mothers. (pls no long explaining)
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
Match each relationship description to the correct corresponding relationship
Answer:
where is the entire question??
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:
Meaning of all of these words below (Will be appreciated! I really need help! 30points!!! ^^):
autotroph, heterotroph, producer, consumer, herbivore, carnivore, omnivore, scavenger, ecosystem, population, community, terrestrial ecosystem, marine ecosystem, aquatic ecosystem, biotic factor, abiotic factor, predator, prey, predation, competition, carrying capacity, limiting factor, decomposer
Autotroph: organism that is able to form a neutral organic substances heterotroph: an animal that can't make its own food supply producer: a person, company, or country that makes, grows and supplies goods consumer: a person or thing that eats or uses something herbivor: animal that eats off of plants carnivore: animal that eats meat or skin omnivore: animal that eats both plants and meat scavenger: a person who looks for missing items ecosystem: where organisms call home population: the number of people/living things in one area community: a group of people living around the same place terrestrial ecosystem: group of living organisms living on a land-based area marine ecosystem: under the sea where the salt levels are really high aquatic ecosystem: ecosystem of a body of water biotic factor: a non living part of an ecosystem that shapes an environment abiotic factor: non living physical and chemical elements in the ecosystem predator: an animal hunting for another animal to eat prey: the animal victim of a predator predation: the preying of one animal on others competition: an event or contest that people compete in carrying capacity: a species' average population size limiting factor : anything that is a population size decomposer: an organism that breaks down chemical
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phew that was a lot. I hope you have a great day!!
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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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
Deforestation leads to environmental imbalance. Give reason.
Answer: Well, deforestation is cutting down trees, and many arboreal animals live in those trees. So if they have no proper shelter, they would have no place for personal activities such as breeding, feeding etc. And without those important activities that they have to do everyday, the population of arboreal animals will keep on decreasing until they go extinct. Though that's not the only problem. The herbivores won't get anything to eat, hence not letting the omnivores or carnivores get their food. As you can see, deforestation can create a huge environmental imbalance.
Is the following cell a plant of an animal cell? How do you know? Plant cell because there is a cell wall and a chloroplast O Plant cell because there is a large vacuole and a cell wall 0 Animal cell because there is a cell membrane and no chloroplasts O Animal cell because it has a cell wall and a a large vacuole
Answer:
A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane.
Explanation:
Which of the following is evidence of Continental Drift?
Shape of the continents
Distribution of fossils
Distribution of geological features
All of these
None of these
Answer:
All of these
Explanation:
If you put all of the continents together, they fit like a puzzle. If you look at mountains and match these when they are put together, mountains will be in similar places. The fossils found in Antarctica were fossils from warm climates. That could only be if all continents used to be one!
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
HACER CLIC AQUÍ PARA LA VERSIÓN PARA PROFESIONALES
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.
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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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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List 4 viruses and the diseases they cause (1 disease per virus) please help!!!!
How do scientists use fossils to study climate?
PLS HELP
Answer:
Many small organisms can be preserved within these layers of sediment through time. The changing abundances of these fossils through time can tell us whether a change in the environment or climate was gradual or abrupt. Studying fossil pollen and other fossils helps scientists to learn more about climate change.
Answer:
How do scientists use fossils to study climate?
Answer=
Fossils are used by scientists to study climate.The changing abundances of these fossils through time can tell us whether a change in the environment or climate was gradual or abrupt. Studying fossil pollen and other fossils helps scientists to learn more about climate change.
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A student used a microscope to study four members of the phylum Ciliophora. Members of
this phylum move when propelled by hundreds of tiny cilia.
Paramecium
caudatum
Paramecium
aurelia
Os
ALLA
3220
Paramecium
bursaria
Paramecium
multimicronucleatum
VIITTEITA
Although these organisms belong to the same phylum, they are classified as different -
A families
B species
C kingdoms
D orders
Answer:
A
Explanation:
Makes the most sense
Although these organisms belong to the same phylum, they are classified as different families. Thus, option A is correct.
What is family?The family structure that is being described in the description above is step family structure. The step family is being formed by which one family ends with divorce and the individual is likely to get remarried, creating a blended or step family that is associated with two families that are separated.
Family of choice refers to the concept of family is intended to capture the commitment of chosen, not fixed, care and support. A family of choice is also known as chosen family and found family. It is a family that is made up of intentionally by chosing the members for love and support rather than blood. Basically, family of choice is that one in which people chose their member intentionally.
Therefore, Although these organisms belong to the same phylum, they are classified as different families. Thus, option A is correct.
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Marine iguanas feed on seaweed. Seaweed contains starch Starch is digested by enzymes in the digestive system. Explain why the shape of an enzyme is important for digestion.
Answer: The enzyme is a catalyst that speed up the rate of the reaction.
Explanation:
The enzyme can be defined as the protein that is involved in the catalytic activity of the reaction. The shape of the enzyme is important as it determines to which substrate it binds to. The enzyme is specific to the substrate and binds to a specific kind of substrate. During the digestion process the enzyme binds to the specific substrate like protein, carbohydrates, fats, and other biomolecules present in the food to simplify the digestion process. Starch is digested into maltose by the enzyme salivary amylase in the mouth.
Make a key out of this picture, in other words differentiate between each.
Answer:
They are different due to their colour, number of petals, and shape of petals.
Explanation:
These flowers are different from one another because of their colour, number of petals, and shape of petals. Some flowers are pink in colour, some are white and others are yellow in colour. Some has five petals whereas some has four petals. Some petals of flowers has circular shape, some petals has pointed shape, while others are 'W' shape.