Answer:
Because the Pollution and oil from streets and dirt, etc... on land would be washed down to or brought to the low collection point of the watershed therefor the fresh rain would be cleaner than the collection of polluted dirty water
Explanation:
Whích DNA strand is complementaryto the DNA strand TAC CTA AGT GCA
A. ATG GAT TCA CGT
B. GTA TAG ACT TGC
C. GGG CAG CAG GAT
D. TCA CGT GAT ATG
Answer: A
Explanation:
G is opposed to C
And C is opposed to G
T is opposed to A
And A is opposed to T
As an embryo developed, identical cells give rise to specialized cells that platform different functions.
Answer:
As an embryo develops, identical cells give rise to specialized cells that perform different functions.
Explanation:
As an embryo develops, the cells divide, giving new ones. As the cells grow and continue to reproduce themselves, they differentiate, becoming specialized cells. These cells will be located in a particular part of the embryo and will perform a specific function. The shape, size, and organelles vary according to their role.
Which model of replication did the actual results of the Meselson-Stahl experiment support? Explain your answer.
Answer:
Semi-conservative replication
Explanation:
After the double-helix discovery of Watson and Crick, there were three possible models about the DNI replication:
The Conservative model stated that the two strands of DNI together were the template of another new molecule. The final product was the original double-stranded molecule and the new molecule. The semi-conservative model stated that the original DNI molecule separated into two strands, and each of them served as a template for the synthesis of a new complementary strand. The replication product would be two double-stranded DNA molecules, each carrying an original strand a new one. The Dispersive moles stated that the replication product would be two molecules made by a mixture of segments of the original and the new molecules.Meselson and Stahl joined to discover which of the models was the correct one. To do it they used E. coli and Nitrogen isotopes.
First, they extracted DNI from bacteria grown in a medium with N¹⁴ and got its density band by centrifugation. Then they grew bacteria in a medium with N¹⁵, extracted their DNI molecules, centrifugated them, and got the density band, which was heavier than the firsts ones. The researchers then transferred bacteria grown in medium with N¹⁵ to a medium with N¹⁴, and they allowed only one replication process to occur. DNI was extracted and centrifugated again, and a new band appeared. This band was an intermediate form between bands of DNI-N¹⁵ and DNI-N¹⁴.This event eliminated the conservative model. If this model were correct, the expected result would be to get two bands: one corresponding to the density DNI-N¹⁵ and the other corresponding to the density DNI-N¹⁴.
Bacteria grown in a medium with N¹⁵ and then transferred to a medium with N¹⁴ were finally allowed to replicate twice. Their DNI was extracted and centrifugated. The result was two bands: one of them coincided with the intermediate band, and the other one with the DNI-N¹⁴.This result was conclusive because if the dispersal model were correct, these two bands should not appear, as all the DNI strands would have part of the original molecule.
With this experiment, Meselson and Stahl proved that the correct replication model was the semi-conservative one.
Which example is classified as a body fossil?
Answer:
The fossils of bones, teeth, and shells are called body fossils.
Explanation:
A Varroa mite attaches to a honeybee and feeds on the bee's blood. However, the mite does not cause the bee to die. Which best describes the relationship between the mite and the bee?
A. Predation
B. Mutualism
C. Cooperation
D. Parasitism
Answer:
Parasitism
Explanation:
There is no mutual relationship (also meaning no cooperation, which I do not think is a type of relationship), the mite isn't "eating" the honeybee, so not predation. Therefore, parasitism, when one creature benefits at the expense of the other creature.
A metabolic waste of algae that can be recycled for use in cellular respiration is A.oxygen
B.sodium
C.organic acid
D.carbon dioxide
In North American forest, two species of birds, nuthatches and brown creepers, forage on the same trees for insects. Brown creepers feed on insects near the bottom of the tree trunk, while nuthatches feed on insects in the top part of the tree. The difference in foraging behavior most likely affects the nuthatches and brown creepers by: allowing birds to avoid many types of predators allowing birds to avoid many types of predators reducing competition between the birds for resources reducing competition between the birds for resources preventing the birds from interbreeding with each other preventing the birds from interbreeding with each other establishing dominance between the birds for nesting sites
Answer:
The correct answer is - reducing competition between the birds for resources.
Explanation:
In this ecosystem, the two species of birds brown creepers and nuthatches share habitat in the same tree for their food resources are insects. Brown creepers feed on resources on the bottom of the tree whereas nuthatches feed on the top of the tree.
By this, they avoid competition between these two birds for the same food resources in the same tree. The competition would be more if both have depended on the insects all over the tree.
Groundwater is taken up through a tree's roots so the tree can grow. Which sequence correctly
shows how the water the plant is using will cycle though the water cycle and become groundwater
again?
respiration → condensation → precipitation → groundwater
condensation precipitation groundwater → transpiration
transpiration → condensation → precipitation → groundwater
condensation → precipitation → groundwater → respiration
Answer:
condensation, precipitation, groundwater → transpiration
Explanation:
I hope it will help you
What could be the reasons that a desert ecosystem can support less populations.
What are the adaptations of bottle-nosed dolphins that allows them to thrive in the marine biome?
narrow body to cut through waves
they can attach themselves to the sea floor during storms
they secrete gases to float in the water
paddle-like flippers for swimming
Had to repost because of the people sending links
NO LINKS
Answer:
A and D
Explanation:
Dolphins have a narrow, torpedo-shaped body to swim easily through water. Their strong, paddle-like flippers also aid in strong swimming.
However dolphins do not secrete gases or attach themselves to the bottom of the sea, so the answers are A and D.
Good luck ^^
Narrow-body to cut through waves and paddle-like flippers for swimming are the adaptations of bottle-nosed dolphins.
What are adaptations?Adaptations are specific phenotypes features (or traits) that confer an advantage in a given environment.
Adaptation can enhance the survival and reproduction rate of an organism.In the case of dolphins, adaptations helped them to survive in an aquatic environment.In conclusion, narrow-body to cut through waves and paddle-like flippers for swimming are the adaptations of bottle-nosed dolphins.
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how does sugar affect Co2 production in yeast
Explanation:
When yeasts eat sugar and turn it into energy, they also produce carbon dioxide.
2- Clasifica los siguientes sistemas en abierto, cerrado o aislado:
a. una cazata de helado c. una lata de arvejas e. un vaso con jugo
b. una bolsa de 1kg de arroz sin abrir d. un termómetro f. un perro
3- Clasifica los siguientes sistemas en homogéneo y heterogéneo e indica el número de fases:
a. limonada con hielo c. agua y aceite e. agua gasificada
b. agua y acetona d. tierra, arena y piedras f. café con leche
4- En un laboratorio se realiza un experimento para estudiar la flotabilidad de cuerpos
en el agua.
a. Indica qué partes componen el sistema y cuál es el ambiente.
b. Clasifica el sistema como abierto, cerrado o aislado.
c. ¿En qué estado físico está cada componente del sistema?
d. ¿Cuántas fases tiene?
e. ¿Es homogéneo o heterogéneo?
5- El recipiente de la imagen tiene agua coloreada y está tapado.
a. Identifica qué partes componen el sistema.
b. Clasifica el sistema en abierto, cerrado o aislado.
c. ¿El sistema es homogéneo o heterogéneo?
d. Si enfriamos el recipiente hasta obtener hielo,
¿cambiará la masa del sistema? Justifica
6- Se está estudiando la vida de los peces en una pecera que se encuentra encima de una mesa en el laboratorio.
a. Dibuje lo descrito arriba y señale cuál es el sistema, el límite y cuál es el ambiente.
b. Clasifique el sistema según la interacción con el ambiente, justificando su respuesta.
c. ¿Es homogéneo o heterogéneo?
Answer:
Las respuestas se dan a continuación.
Explicación:
1) Una búsqueda de helado y un vaso con jugo es un sistema abierto, un perro es un sistema aislado mientras que una bolsa de 1 kg de arroz sin abrir, un termómetro y una lata de guisantes es un sistema cerrado.
2) la limonada con hielo, el agua carbonatada, el agua en acetona y el café con leche son sistemas homogéneos mientras que el agua y el aceite, la tierra, la arena y las piedras son sistemas heterogéneos.
3) El recipiente de la imagen tiene agua coloreada y está tapado.
B. el sistema está cerrado.
C. El sistema es homogéneo.
D. Si enfriamos el recipiente a hielo, la masa del sistema no cambiará.
4- Se estudia la vida de los peces en una pecera que se encuentra sobre una mesa en el laboratorio.
a. El sistema es abierto y el medio ambiente es acuático.
B. Es un sistema heterogéneo.
Is Biotechnology ethical ? Why is it or why is it not ?
Answer:
yes , biology is ethical.
Explanation:
Ethical issues that arise from modern bio technologies include the availability and use of privileged information, potential for ecological harm, access to new drugs and treatments, and the idea of interfering with nature
_______________, such as bacteria, breakdown dead organisms and release nutrients back into the soil.
A. Producers
B. Decomposers
Answer:
B. Decomposers
Explanation:
i hope this helps ;)
Decomposers,such as bacteria, breakdown dead organisms and release nutrients back into the soil.
plz answer this question what is it
Answer:
option(D) is right answer
Explanation:
because human takes oxygen and plants take carbon dioxide
Answer:
well, what we can do here is eliminate what we know. It's not A, because ALL living organisms reproduce. (examples include humans, cows, plants, etc.) for now, until we see the other answers, we will skip b. It can't be C, because on a trusted website, it states that the unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory. ... All organisms are made up of one or more cells.
If we take a look at D, It could be true because in another trusted website, it states that Oxygen helps organisms grow, reproduce, and turn food into energy. ... Although other animals may use different organs to breathe with, they all get oxygen into their bodies through respiration. So, Looking back up to B, it seems less likely now that we've viewed everything. D is the answer, I wasn't paying attention earlier, haha.
Hope this helps! brainliest is appreciated :)why is the same of cell membrane is equal in both plant cell and animal cell
Answer:
When the cell duplicates it still has the same exact membrane so when it is done duplicating it should have the same exact amount of membrane
Explanation:
What does the phrase "water loss control" mean?
Read the excerpt from "Water Efficiency Strategies."
Water Loss Control—National studies indicate that, on
average, 14 percent of the water treated by water systems is lost
to leaks. Some water systems have reported water losses
exceeding 60 percent. Accounting for water and minimizing
water loss are critical functions for any water utility that wants to
be sustainable
o preventing water from being wasted due to leaks
O limiting the number of household sinks and toilets
O limiting use of dishwashers and washing machines
O preventing pipes from rusting and growing mold
Answer: Answer: preventing water from being wasted due to leaks
Explanation:
Water loss control has to do with the efforts which involves managing leakage to low levels.
From the excerpt, we can infer from the information given that 14 percent of the water treated by water systems is lost due to leaks. Therefore, the phrase "water loss control" simply means how water loss will be minimize.
The phrase "water loss control" means preventing water from being wasted due to leaks.
What is Water loss control ?A water loss control program helps to identify real or physical losses of water from the water system and. apparent losses, the water that is consumed but not accounted for.
Water loss control includes
utility efforts to manage leakage to economically low levels, andreducing metering and billing errors such that reliable measures of customer consumption are attained and sufficient revenue is garnered by the water utility.To know more about Water loss control here
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Why did Darwin see savage competition as a creative process?
Answer: According to Darwin theory of evolution the struggle for existence is considered as major part for competition among living things.
Explanation:
Coexisting species that belong to the same genera compete for same kind of resources for their survival. Some phenotypic variations gives an survival advantage over others. The superior ones dominate the inferior ones and compete for resources. The one who receives the resources like mates, food, shelter, and others the chances of survival also increases considerably.
How does an ATP molecule release
energy for cells?
A. hydrolysis
B. breaking the bond between the 2nd and 3rd phosphate
C. removing the ribose sugar
Answer:
B
Explanation:
when one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released.
The ATP molecule releases energy for cells by breaking the weak phosphate bond and converting it to ADP. This process is called A. hydrolysis.
What is the hydrolysis of ATP? Our body requires energy to perform various body activities and functions. This includes muscle contraction, digestion, transportation of molecules etc. This energy comes from the breakdown of ATP. The ATP molecule that is generated during the respiration process is broken down into ADP. This process is called the hydrolysis of ATP. The energy that is released during the breakdown of ATP is used to perform the required functions. Out of the three phosphate bonds, the weak phosphate bond is broken down to fulfil the energy needs of the body.Thus, whenever the cell requires energy, the ATP is broken down into ADP by the process of hydrolysis.
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List 3 main functions of the cutaneous membrane (skin).
Answer:
The cutaneous membrane is the technical term for our skin. The skin's primary role is to help protect the rest of the body's tissues and organs from physical damage such as abrasions, chemical damage such as detergents, and biological damage from microorganisms.
Explanation:
What is the term for a structure that has no use in an organism?
A.Homologuos
B.Index
C.Vestigial
D.Sedimentary
The answer you're looking for is C. Vestigial.
Vestigial structures are structures that have no clear purpose and tend to be leftover pieces from a previous ancestor.
Hope this helps; have a great day!
who invented Napiers bone and when
Answer:
John Napier (1550-1617), matemático escocés, inventó dos ábacos multiplicativos que se conocen con los nombres de "huesos de Napier" y "promptuario" respectivamente. Se dieron a conocer en el año 1617 y suponen una aportación fundamental en la historia del desarrollo de los aparatos de cálculo.
Explanation:
Answer:
Explanation:
John Napier a Scottish mathematician invented a calculating device in 1614.
What is the DNA sequence that was used for synthesizing this mRNA sequence? A.TTTgctatactatagtac ...
Answer:
The generated mRNA sequence will be AAACGAUAUGAUAUCAUG...
Explanation:
DNA consists of nucleotides, which are composed of nitrogenous bases that are called Adenine (A), Thymine (T), Guanine (G) and Cytosine (C). These nitrogenous bases must pair with each other for the DNA molecule to be formed. In DNA, Adenine only pairs with Timine, while Guanine only pairs with Cytosine. In this case, we can say that the nitrogenous bases pair with other bases that are complementary to them.
The mRNA is formed from the DNA and the enzyme that produces the mRNA, uses the sequence of nitrogenous base pairs of DNA to produce the mRNA, however, the mRNA does not have the Thymine base, but the Uracil (U) base that pairs with Adenina. In this case, when the DNA contains the Adenine base, the mRNA produced will present the Uracil base. When the DNA has the Guanine base, the mRNA will have the cytosine base.
Thus, a DNA with the base sequence TTTgctatactatagtac will present an mRNA with the base sequence AAACGAUAUGAUAUCAUG ...
D: ATGTCTATACTAGCTTTT
The maintenance of a self-sustaining ecosystem requires a
A.soil that is acidic
B.constant temperature
C.greater numberof herbivores than producers
D.cycling of materials between organisms and their environment
i need help please????
Answer:
a
Explanation:
Write a sentence with the word Fetal period
Please help !!
Answer:
The average abortion occurs at the beginning of fetal period
Explanation:
no explanation
Hell p please
Directions: Explain where each part of the directional terms are
located:
A. Body planes
1. Sagittal
2. Mid-sagittal
3. Coronal/frontal
4. Transverse/horizontal
B. Directional terms
1. Superior
2. Inferior
3. Anterior
4. Ventral
5. Posterior
6. Dorsal
7. Medial
8. Lateral
9. Proximal
10. Distal
11. Superficial
12. Deep
C. Body cavities
1. Dorsal
2. Cranial
3. Spinal
4. Thoracic
5. Abdominal
6. Pelvic
D. Quadrants
1. Right upper quadrant (RUQ)
2. Left upper quadrant (LUQ)
3. Right lower quadrant (RLQ)
4. Left lower quadrant (LLQ)
Answer:
A. Body planes
1. Sagittal: cut along the lengthwise plane of the body. divides left and right parts.
2. Mid-sagittal: cut exactly down the median. divides left and right parts equally. (would cut vertically down the nose)
3. Coronal/frontal: divides the body into anterior and posterior parts
4. Transverse/horizontal:cut along the lengthwise plane. divides anterior and posterior. (coronal section)
B. Directional terms
1. Superior: toward the head end or upper part of a body structure. above. (AKA cranial or cephalad) The face is superior to the neck.
2. Inferior: away from the head end or toward the lower part of a structure or the body. (AKA caudal) The navel is inferior to the chin.
3. Anterior: toward or at the front of the body. (AKA ventral). The windpipe (trachea) is anterior to the esophagus.
5. Posterior: toward or at the backside of the body. (AKA dorsal). The heart is posterior to the sternum.
7. Medial: toward or at the midline of the body. The bridge of the nose is medial to the eyes.
8. Lateral:away from the midline of the body. The eyes are lateral to the nose.
9. Proximal: close to the origin of the body part or point of attachment of a limb.
10. Distal: farther from the origin of a body part or the point of attachment of a limb. the foot is distal to the knee.
11. Superficial: toward or at the body surface. (AKA external). The skin is superficial to the muscles.
12. Deep:away from the body surface (AKA internal). The intestines are deep to the spine.
C. Body cavities
1. Dorsal: consists of two subdivisions which are continuous with each other: cranial cavity and spinal cavity
2. Cranial: space inside the skull
3. Spinal: extends from cranial cavity almost to the end of the vertebral column. protected by the vertebrae
4. Thoracic: separated from rest of ventral cavity by the diaphragm. contain heart, lungs, etc that are protected by the rib cage
5. Abdominal: contains stomach, liver, intestines, etc
6. Pelvic: contains reproductive organs, bladder, and rectum
D. Quadrants :
1. Right upper quadrant (RUQ): Lobe of the liver is located and gallbladder. contains liver, gallbladder, small and large intestines
2. Left upper quadrant (LUQ): Main portion of the stomach. contains stomach, pancreas, spleen, small and large intestines
3. Right lower quadrant (RLQ): The Cecum, appendix, and part of the small intestine are located. contains small and large intestines, appendix, female ovary and uterus, bladder.
4. Left lower quadrant (LLQ): Descending colon. Contains small and large intestines, female ovary and uterus, bladder
describe a receptor molecule
Answer:
receptors are chemical structures, composed of protein, that receive and transduce signals that may be integrated into biological systems
Explanation:
Answer:
a protein which binds to a specific molecule. The molecule it binds is known as the ligand. A ligand may be any molecule, from inorganic minerals to organism-created proteins, hormones, and neurotransmitters.
Gressel the Goblin is making an inventory of Darklord Ganondorf’s treasure horde following a raid by some violent fellow named link. The horde now contains only 2150 gems (as in $). Gressel notices that there were twice as many green-gems (worth 1) as blue-gems (worth 5) and 13 fewer blue gems than red-gems (worth 20). How many red, blue and green gems are there remaining in the horde?
➥ Let the number of blue gems be x, green gems be 2x and red gems be x + 13.
According to question,
5x + 1 × 2x + 20(x + 13) = 2150
On solving equation, we get
27x + 260 = 2150
27x = 2150 - 260
27x = 1890
x = 1890/27 = 70 blue gems.
2 × 70 = 140 green gems.
70 + 13 = 83 red gems.
Hence, We have 70 blue gems, 140 green gems and 83 red gems.
helpppppp pleaseeeeeee