im hispanic but put it in english and then i could help you for sure i promise ill edit my answer and everything solo pongalo en ingles por favor
When purified virulent pneumococci DNA was introduced to avirulent pneumococci, Avery and his colleagues observed _____. Multiple choice question. no death in test animals only growth of avirulent pneumococci, indicating DNA was NOT the agent of transformation death of test mice growth of virulent pneumococci, indicating DNA was the agent of transformation
Answer:
death of test mice, growth of virulent pneumococci, indicating DNA was the agent of transformation
Explanation:
In an experiment conducted by three scientists namely: Oswald Avery, Colin MacLeod and Maclyn McCarty in 1944, it was proven that DNA is the substance that causes transformation in bacteria as opposed to proteins.
In this experiment, Avery and his colleagues combined a dead but virulent strain of Streptococcus pneumoniae & a living but avirulent strain of the same bacterium and inserted into a living rat. They found out that the test specimen (rat) died and observed the growth of the virulent pneumococci.
This suggests that the virulent strain of bacteria has transferred its virulent DNA via transformation into the avirulent strain to kill the rat. Hence, indicating DNA as the agent of transformation.
Describe movement of molecules to maintain a healthy cell environment. Explain in details
Answer:
Very necessary for its survival.
Explanation:
Movement of molecules is very important to maintain a healthy cell environment because some molecules are required by the cell for its growth and development. Some molecules moves inside the cell environment through a semi-permeable membrane such as glucose, oxygen, potassium etc while on the other hand, some molecules are removed from the cell which are waste materials such as carbondioxide etc. If these waste materials are not removed from the cell, it greatly damaged the cell.
What do you notice about the speed of electrons through the short circuit?
No picture, no observation = no way to answer this.
Please help the picture is above I’ll mark as brainliest.
Answer: The last one im pretty sure.
Explanation:
CAN u pLZZ help me anwser my question
Scientists often look for similar genes in very dissimilar organisms as evidence that they are related.
O True
False
Answer:
True
Explanation:
Javier investigated what happens when Earth's plates meet. He found that as Earth's plates meet at plate boundaries and interact, they move in three different ways. The ways they interact produce changes on land and on the ocean floor. What are the kinds of boundaries that plates form? Label each plate boundary with the correct type from the choices below.
Answer:
I. Divergent
II. Convergent
III. Transforming
Explanation:
The crust is the outermost layer of the earth. It is divided into many plates that move over the mantle. Nowadays, there are six different bigger plates and twelve that are smaller. These plates are limited by three types of ridges or borders that differ in the movement they produce.
Boundaries types:
I. Divergent: New crust is created by the rising molten materials coming from the mantle. Two plates separate, and the stream of hot material creates a new seabed between them. It occurs an expansion of the sea bottom. As old plates get separated, the new and young crust instantaneously gets formed. The emerging mantle occupies the space left by the separation of the two plates. This process occurs along with an underwater mountain range, known as the mid-oceanic ridge or divergent ridge. An example of this is the ridge located in the middle of the Atlantic Ocean, extending from Greenlander to the southernmost point of South America.
II. Convergent. Collision area between two plates. Two oceanic plates might collide, or one oceanic plate with a continental one. In this last case, the oceanic crust sinks under the continental plate, and magma rises to the surface by crevices. The thicker and older plate subduces under the other plate. The Himalayas and Los Andes are examples of these collisions. Also, collisions create volcanic arches and continental arches.
III. Transforming. The plates slide laterally with each other, and they are usually called faults. It is associated, in general, with the oceanic ridge, although it might also occur in the continental plate. No rocky material is either destroyed or formed. When the plates move and produce a displacement of one transforming limits from side to side, earthquakes occur. The movement breaks the crust and originates pronounced fractures. The San Andrés fault is an example of this plate ridges.
The kinds of boundaries that plates form is the fact that seismic activity takes place at the three known types of plate boundaries called divergent, convergent, and transform.
What happens when Earth's plates meet?If two tectonic plates meet, they create a kind of convergent plate boundary.One converging plates often shift or move below the other, in an act known as subduction.
The new magma (molten rock) tend to increase and may erupt to create volcanoes.
Learn more about Earth's plates from
https://brainly.com/question/1162125
please help will mark brainliest
They overgrazed on the parks vegetation and grasses.
Which pie graph is shaded to best represent the approximate percentage of time that humans have existed during Earth’s entire history?
Answer: I chose D and got it right just always choose the smallest one their hope this helps yall
Explanation:
Atividade de Português
Answer:
1- C
2-
3- C
4- C
Explanation:
Humanity faces a great number of environmental challenges, including: resource depletion, ecosystem service deterioration, pollution, biodiversity loss and climate change. Technology and research have both had positive and negative effects on the environment. Evaluate the impact of scientific research and technology on the environment. What are some ways that scientific research has harmed the environment. Choose ALL that apply. A) Research has led to the depletion of natural resources. Eliminate B) Air, water, heat and noise pollution can all be caused by producing and using technology. C) Scientific research has led to widespread increases in carbon emissions which has led to global climate change. D) Scientific research has caused widespread habitat disturbance and destruction as scientists have invaded ecosystems. E) Manufacturing technology creates large amounts of waste, and used computers and electronics get thrown out when they break or become outdated.
Answer:
Option B and E and D
Explanation:
Technological advancement has led to growth of industries and manufacturing units and hence the net production of goods. This has led to the use of natural resources and release of pollution of all forms. Environmental research leads to intrusion into niche habitats and hence causes its destruction.
Option B, D and E are correct
Help Brainliest to anyone who answers me ASAP!!!
Which scenario is an example of a negative feedback loop?
A.
When body temperature increases, sweat is produced as a cooling agent to lower body temperature.
B.
In some parts of the world, birth rates are far exceeding death rates, which has led to overpopulation.
C.
Ice reflects sunlight much better than water. A warmer atmosphere is turning ice to water, which is absorbing more of the Sun’s energy.
D.
A warmer atmosphere is leading to warmer oceans. A warm ocean releases more carbon dioxide, which traps more heat in Earth’s atmosphere.
Answer:
A)
Explanation:
Question has been asked before so I know the answer.
When ocean water freezes this leaves behind water that is saltier and denser.
True or false ?
Answer:
trye
Explanation:
it just is
Which of the following is NOT one of Darwin's conditions for natural selection to occur?
Answer:b
Explanation:
Question 2 of 10
What is the term for the condition of the atmosphere in a given area at a
given time?
A Weather
B. Latitude
C Climate
D. Altitude
SUBMIT
Need ASAP
Answer:
A .Weather
Explanation:
The state of atmosphere over an area at any point of time is known as weather. It is the state of the atmosphere over short periods of time. ... Precipitation, humidity, temperature, pressure, cloudiness, and wind are the basic atmospheric conditions that make up the weather of a region.
Explain how this mutation will result in competition within the population that is linked to the idea of survival of the fittest.
Answer:
Survival of the fittest, term made famous in the fifth edition (published in 1869) of On the Origin of Species by British naturalist Charles Darwin, which suggested that organisms best adjusted to their environment are the most successful in surviving and reproducing. Darwin borrowed the term from English sociologist and philosopher Herbert Spencer, who first used it in his 1864 book Principles of Biology. (Spencer came up with the phrase only after reading Darwin’s work.)
Herbert Spencer's Principles of Biology (1864) first introduced the expression “survival of the fittest.”
Survival of the fittestQUICK FACTSKEY PEOPLEAlfred Russel WallaceHerbert SpencerRELATED TOPICSAdaptationNatural selectionDarwinian fitnessUse in evolutionary theoryDarwin did not consider the process of evolution as the survival of the fittest; he regarded it as survival of the fitter, because the “struggle for existence” (a term he took from English economist and demographer Thomas Malthus) is relative and thus not absolute. Instead, the winners with respect to species within ecosystems could become losers with a change of circumstances. For example, fossil evidence supports the notion that the mammoth (Mammuthus) was more fit during the most recent ice age (which ended roughly 11,700 years ago), but it became less fit as humans hunted it and the world’s climate warmed; fossil evidence suggests that the mammoth succumbed to extinction a few thousand years later.
Darwin’s theory of evolution by natural selection entailed three crucial elements: variation, reproduction, and heritability. Variations in the physical features of organisms that tend to benefit an individual (or a species) in the struggle for existence are preserved and passed on (or selected), because the individuals (or species) that have them tend to survive. The success or failure of a given variation is not known when it emerges; it is known only retrospectively, after organisms that possess it either grow and mature and pass it to their own offspring or fail to mature and reproduce.
Importantly, Darwin was influenced by the thinking of English physicist and mathematician Isaac Newton, whose system emphasized experimentation, mathematics, and logic over subjective sense experience. During Darwin’s time, his evolutionary theory was an attempt to construct a similar system for the living world, a frontier not yet crossed in the biological sciences.
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Some philosophers and scientists have suggested that the notion of survival of the fittest is an example of circular reasoning—that is, a tautology (a statement framed in such a way that it cannot be falsified without inconsistency). In tautologies, any true statements that follow are a matter of definition. Indeed, describing those that survive as the fittest is similar to stating that those that survive survive. British philosopher Karl Popper considered “survival of the fittest” self-evident at first; however, he changed his mind after realizing that Darwin posited variation axiomatically; that is, Darwin noted that all individuals did not start with the same set of characters (or traits). Therefore, the forces affecting survival did not weigh on individuals and species equally; there were always variations, some of which would prove favourable and confer fitness over others.
Explanation:
please give this answer as brainliest answer
water is warmers by the sun and ?
Answer:and then it evaporates into the atmosphere
Explanation:
ESTOS ALIMENTOS DULCES AZUCARADOS NO SÓLO SON MALOS PARA LA SALUD,SINOQUE YANDIEN PUEDEN SER E________.AMENUDO SE DISFRASAN CON NOMBRES QUE PUEDEN SER S________ ,
La respuesta correcta para esta pregunta abierta es la siguiente.
Desafortunadamente, no anexaste opciones o incisos para responder la pregunta. Sin embargo, podemos comentar lo siguiente.
ESTOS ALIMENTOS DULCES AZUCARADOS NO SÓLO SON MALOS PARA LA SALUD, SINO QUE TAMBIEN PUEDEN SER ENGAÑOSOS. A MENUDO SE DISFRAZAN CON NOMBRES QUE PUEDEN SER SABROSOS.
Es muy importante que seas cuidadoso con los alimentos que consumes como parte de tu alimentación. Muchas empresas, a través de sus marcas, comparten publicidad engañosa para atraer más clientes bajo la promesa de alimentos sabrosos y nutritivos. Y la verdad es que no. Te están engañando.
No hay nada como basar tu dieta diaria en frutas, verduras y un equilibrio entre proteínas, carbohidratos, azúcares naturales y grasas.
Si es necesario, consulta a tu médico o a un nutriólogo para que te expliquen qué tan malo pueden ser los alimentos con muchos químicos.
¿Son sabrosos? Sí, pero también están llenos de sal, grasas, azúcares en excesos que le hacen mucho daño a tu salud.
En México ya existe una ley que obliga a todos los productos colocar unas etiquetas de color negro con blanco en todos los productos con la leyenda: "exceso de sodio," "exceso en grasas," exceso en azúcar."
Esto, con el propósito de que la gente se entere antes de comprarlos.
Of the following, which statement is false?
A) Biotic factors are living things
B) A biome is a major regional or global community of organisms
C) An example of an abiotic factor is sunlight
D) Heterotrophs can make their own food
E) Other:
Answer:
D) Heterotrophs can make their own food
Answer:
d is your answer it's definitely d
In an energy pyramid, up to 10% of energy is transferred between trophic levels. Suppose the producer level has 50,000 J. Approximately how much energy is available to the next level, the primary consumer, in this energy pyramid?
Answer: 5,000
Explanation:So it is the 10% law, this is an example 10,000 for the first animal, 1,000 for the second and 100 for the third. So for 50,000 it would be 5,000 for the next
Choose all the right answers. All plant and animal cells have: cellulose cytoplasm nucleus cell wall membrane
Answer:
cytoplasm
Explanation:
I rlly hope this helps. its what I remember but goodluck
Answer:
hope this helps
Explanation:
Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane.
An oak tree falls in a forest. It kills some ants and stops grass from growing
below it. What type of disturbance is this?
O A. Secondary
O B. Primary
O C. Cyclical
O D. Small
Answer:
This is O D. Small type of disturbance.
Explanation:
Small-scale biological disturbance.
Answer:
O D. small
Explanation:
In ecology a disturbance is an event that causes a change in the environment. There are small-scale disturbances and high-magnitude disturbances. Small-scale disturbances are typically driven by biological processes -for example the fall of a tree- while high magnitude disturbances are typically driven by physical processes -for example, storms-. Small-scale disturbances as single-tree blowdowns are very important to create and maintain diversity and heterogeneity in the forest.
Hope this helps! can i get brainlest please Thanks!
Which of the following structures are NOT involved in asexual reproduction?
A. Gametes B. Roots C. Stem D. Tuber
Answer:
Which of the following structures are not involved in asexual reproduction? Gametes.
Explanation:
So option A. Have a great summer. This is the correct answer.
What does biodiversity mean?
O
same organisms at each level
different organisms at all levels
O differences within one species
similarities within one species
Answer:
Biodiversity is a kind of variation of animals, or plant species within a given habitat
Explanation:
Which of the following is not a concern associated with fossil fuel dependence?
A. global warming
B. rising prices
C. increased competition
D.increased development
Please select the best answer from the choices provided
Answer:
D. increased development
Explanation:
I compared answers with others and found out d is correct. trust me :)
Which of the following correctly describes the arrangement of the phospholipids in the lipid bilayer of the cell membrane? *
Phospholipids line up head to head, so the phosphate heads are separated from water.
Phospholipids line up head to tail, because opposites attract.
Phospholipids line up tail to tail, so the fatty acid tails are separated from water.
Phospholipids line up with no pattern, because they're molecules which move randomly.
Answer:
Two layers of phospholipids where the outer layer has the hydrophilic heads facing toward the outside of the cell and the inner layer have the hydrophobic tails facing toward the inside of the cell.
Describe how an ecosystem with high biodiversity might look compared to an ecosystem with low biodiversity.
Answer:
High biodiversity, with many species present, is good. It usually means that an ecosystem is healthy and relatively undisturbed by humans. Low biodiversity is characteristic of an unhealthy or degraded environment. A mown lawn in a city park is an example of an ecosystem with low biodiversity.
¿ Como recuperarías la Dieta Prehispánica y las tradiciones alimentarias que nos heredaron nuestros antepasados?
Answer:
A través de la literatura,
Explicación:
Recuperaríamos la Dieta Prehispánica y las tradiciones alimentarias que nuestros antepasados nos heredaron a través del estudio de su escritura sobre el plano de la dieta y los alimentos que consumen. Al adoptar la Dieta Prehispánica, podemos mejorar nuestra salud y recuperar nuestras tradiciones. También obtenemos tradiciones alimentarias que estuvieron presentes en la Dieta Prehispánica debido a la literatura escrita por las personas presentes en ese momento por lo que los documentos escritos ayudan a recuperar la Dieta Prehispánica y las tradiciones alimentarias.
PLEASE HELP!!!! How do you think cell phones affect attention in class? Describe an experiment you could perform to test your hypothesis. Include your hypothesis, operational definitions of your independent and dependent variables, who your participants would be, and how you would randomly assign them to experimental or control groups.
Which of the following is most likely to form when hot magma rises up as tectonic plates move apart below the ocean
1.mid-ocean ridge
2.fault
3.trenches
4.subduction zone
Answer:
A. Mid-ocean Ridge.Explanation:
A mid-ocean ridge a mid-oceanic ridges are underground mountain formed by tectonic plates.
Identify the main floral organs
of a flower.
