Biodiversity
3
Scientists at a university laboratory study plants in a certain forested region to determine if any of the plants have a medicinal
benefit. The region has recently experienced a decrease in the number of plant species available for medical research. Which of the
following changes has most likely caused this change in biodiversity?
OA.
a prolonged period of increased rainfall
ОВ.
the introduction of an invasive predator species
OC.
decreased rate of animal reproduction
OD. increased rate of deforestation
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Answer: I don’t know, I need this one too
Explanation:
Answer:
D.
Explanation:
and i just guessed
We have concluded that the spiders have different traits for silk flexibility because the offspring inherited different combinations of gene versions from their parents.
The evidence supports this claim because . . .
The is concluded that spider silk flexibility varies because their offspring inherited different combinations of gene versions from their parents, demonstrating that spider silk quality is dependent on the gene present in it.
What is the significance of the spider's silk?The quality of the spider silk is genetic, and due to this, some of the spiders do produce high-quality silk while others produce average or poor-quality silk, but the silk has many applications in various fields, such as biomedical fields such as in tissue engineering, drug delivery, and wound healing, due to its biocompatible, non-toxic properties.
Hence, it is concluded that spider silk flexibility varies because their offspring inherited different combinations of gene versions from their parents, demonstrating that spider silk quality is dependent on the gene present in it.
Learn more about the spider's silk here.
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¿Qué sucede si una célula se encuentra en la fase G0 del ciclo celular? ¿qué células nunca salen de esta fase?
Answer:
las células en fase G0 no se dividen. Un ejemplo de células en fase G0 son las neuronas y las células del músculo de corazón
Explanation:
El ciclo celular es una serie de eventos asociados al crecimiento y división de una célula. El ciclo celular consta de una fase de crecimiento o 'interfase' (la cual a su vez se divide en 3 fases: la fase G1, S y G2) y la fase de división celular (la cual a su vez se divide en mitosis y citocinesis). Sin embargo, hay células que no entran en fase G1 y en lugar de ello se dirigen a un estadio celular conocido como fase G0. La fase G0 es una es un estadio en el cual se encuentran células maduras que no se dividen hasta recibir un estímulo/señal que dispare la entrada de la célula en fase G1, donde la célula sintetiza los ARN mensajeros y proteínas necesarios para las etapas celulares posteriores que conducen a la división celular. Las células en fase G0 no crecen, pero poseen un metabolismo activo. Ejemplos de células en fase G0 incluyen las neuronas, células musculares poli-nucleadas, hepatocitos, etc. (es decir, células maduras y post-mitóticas que son incapaces de reproducirse).
Which statement is not true about chicken-pox?
Answer:
where is your statements
Molds and Mushrooms are examples of organisms in the Kingdom Fungi. Therefore, these organisms would share characteristics such as...
A. Bacteria-like and eukaryotic
B. Heterotrophic and multicellular
C. Heterotrophic and prokaryotic
D. Protest like and autotrophic
Answer:
a
Explanation:
A person who is interested in the hypothalamus and its functions might pursue a career in (3 points)
a
neuroscience
b
gene therapy
c
endocrinology
d
sports medicine
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:
Does myostatin defiency make you grow muscle faster then normal?
Answer:
Deficiency in myostatin resulted in increased muscle mass (1, 6, 15–18), but that this increase was not accompanied by a proportionate increase in force generation.
Explanation:
These findings clearly indicate that the increase in muscle mass of myostatin mutant animals confers no strength advantage over wild-type controls.
Hope this helps!
OBJECTIVE TEST
1. Which of the following statements about science is not correct?
A. Science has made life comfortable for man
B. Science has provided answers to all questions raised by humans concerning nature
C. Science has made the world look smaller
D. Science has shown the best way of solving problems
Answer:
c. Science has made the world look smaller
Explanation:
Honestly speaking, science has definetly made the word a larger and better place.
Easy points: Is this a good paragraph for my biology class??The question was why is it important for soil to contain nitrogen, phosphorus, magnesium, and potassium.
Soil is one of the main sources of nutrients needed by plants in order to grow. Nitrogen is used by plants for leaf growth and green color. Without nitrogen in the soil, the plant wouldn’t grow tall and produce enough food.Phosphorus is used by plants to help form new roots, make seeds, fruit and flowers.This is crucial because crops take up phosphorus only from the soil solution.Potassium helps plants form strong stems and fast growth. It also increases disease resistance.It triggers activation of enzymes and is essential for production of ATP. Magnesium is the central core of the chlorophyll molecule in the plant’s tissue. If Mg is deficient, the shortage of chlorophyll results in poor and stunted growth.
Answer:
It makes the roots absorb the nutrients easier
Explanation:
the roots of the plant are meant to absorb water and nutrients for the plants to manufacture food easly and to grow, the soil contain nutrients for the plants to absorb them.
Use the scenario to answer the following question. A forest ecosystem is home to mountain lions, coyotes, bobcats and deer. The deer eat grass. The mountain tions, coyotes, and babcats eat deer. Hunters began killing large numbers of mountain lions, coyotes, and bobcats. About twenty years later, the deer population had largely increased. The teacher asked the students to explain why the population of deer had a large increase in population size. Which student's argument MOST accurately explains the increase in the deer population? A Student 4: The deer population increased because with fewer mountain lions, coyotes, and babcats there was less competition within the deer population. B. Student 1The number of deer increased because deer populations are always increasing, even when there are mountain lions, coyotes, and bobcats preying on them. Student 3: The number of deer increased because with fewer mountain lions, coyotes, and bobcats, the deer had more food available to eat. D Student 2: The number of deer increased because without mountain , coyotes, and bobcats, the deer longer and had more offspring that also lived longer,
Answer:
A. student 4
Explanation:
The population of deer increase because with fewer mountain lions, coyotes and bobcats there was less competition within the deer population
The correct statement is that; The number of deer increased because without mountain , coyotes, and bobcats, the deer lived longer and had more offspring that also lived longer."
What is food chain?The food chain describes the feeding relationships that exists in nature. Now this ecosystem has the food chain; grass ---> Deer ----> babcats ---> coyotes ----> mountain lions.
Now we are also told that the mountain lions eat the the bobcats and the hunters are killing the mountain lions, coyotes, and bobcats, the predators of the deer hence been removed hence the deer population multiplies.
Therefore, the correct statement is that; The number of deer increased because without mountain , coyotes, and bobcats, the deer lived longer and had more offspring that also lived longer."
Learn more about food chain: https://brainly.com/question/9904853
Which of these best describes fossils ?
A .nonexistent
B. Easily formed
C. Important and rare
D.common and unhelpful
Answer:
C
Explanation:
The above graph shows vertebrate diversity in terms of total
number of species. Which of the vertebrate classes listed in
the graph would have the BEST chance of at least some of
the species surviving a major environmental change?
A:bony fish
B:birds
C:sharks, rays
D: mammals
Answer: a
Explanation:
Answer:
a
Explanation:
As a runner begins to run a race, his or her respiration rate will increase. The runner begins to breathe deeper and at a rapid rate. In addition, the heart beats more quickly. This will result in more oxygen and nutrients delivered to the muscle cells. Which three body systems are working together to help out the muscle cells?
Answer:
respiratory system
circulatory system
digestive system
Please help me. The question is “ Which Tube will experience the greatest loss of water? Claim: Tube #___ will have the greatest amount of water loss. the options are Tube 1, Tube 2 & Tube 3.
The second section of the question is. Reasoning and evidence: Tube ___ will have the greatest amount of water loss because ___________ (give evidence from date above and explain it). (Hint:Osmosis).
I will give brainliest to whoever helps me answer this question.
Answer:
It is Tube 3
Explanation:
This is because the beaker has a lower water potential then the others. Since the dialysis tube holds 100% water and the beaker holds 40% of water, water will move out of the bag to the beaker. Because of the low water potential on the beaker
Pollutants concentrated in the northern part of the Gulf of Mexico often create a dead zone. A dead zone is an area of an aquatic ecosystem that does not have enough oxygen to support sea life. Some of the chemicals that cause the Gulf dead zone come from as far away as Montana. Use this information and what you know of United States geography to select the statement that BEST explains how pollutants from Montana have an impact in the Gulf of Mexico.
Answer and Explanation:
Hello. You did not present the answer options, but we can say that Montana pollutants have an impact on the Gulf of Mexico, due to the Mississippi River. That's because Montana and the Mississippi River are in the same hydrographic basin, which causes Montana pollutants to reach the Mississippi River, which takes these pollutants to the Gulf of Mexico, as the Mississippi River flows into the Gulf of Mexico.
Therefore, we can say that Montana pollutants are easily taken to the Gulf of Mexico and this impacts marine life in an influential way.
Imma give u brainliest
If anyone answer these questions
Answer:
it is to do with something called angular moment. Gravity is the central force in the Universe, because it is the only one which has a significant pull over large distances.
5:Orbits are the result of a perfect balance between the forward motion of a body in space, such as a planet or moon, and the pull of gravity on it from another body in space, such as a large planet or star. ... These forces of inertia and gravity have to be perfectly balanced for an orbit to happen.
6;Gravity is the force that keeps planets in orbit around the Sun.
7.gravity
The dynamics of a rotating body is of course controlled by forces like gravity. Kepler's laws are a direct consequence of gravity
8.Rather, the term is derived from the concept of the tide "springing forth." Spring tides occur twice each lunar month all year long, without regard to the season. Seven days after a spring tide, the sun and moon are at right angles to each other
9.Neap tides occur halfway between each new and full moon – at the first quarter and last quarter moon phase – when the sun and moon are at right angles as seen from Earth.
Explain which sound wave has the greatest amplitude?
A
Wave A because the compressions and rarefactions are more similar, so it has a larger amplitude.
B
Wave A because the rarefactions are more tightly packed, giving it a greater frequency
C
Wave B because the tightly packed compressions give it a longer wavelength.
D
Wave B because the compressions are more tightly packed, giving it a larger amplitude
D
Wave B because the compressions are more tightly packed, giving it a larger amplitude
Why does a lot of rain form over West Ferris?
Answer:
This idea helps explain why more rain forms over West Ferris than East Ferris.Therefore, when explain that water vapor condenses higher in the atmosphere, they are actually explaining that water vapor condenses high in the troposphere, which is relatively low in the atmosphere.
Asexual reproduction is observed in………………..
(a) cow
(b) buffalo
(c) sponge
(d) hen
Which refers to the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound?
Which of the following is the best representation of the limiting factors affecting the elk population in this ecosystem?
O Number of scavengers, number of wolves, number of scientists studying Yellowstone.
Number of scavengers, and harshness of winter
Number of wolves, and harshness of winter.
The elk have no limiting factors
Answer:
Number of wolves, and harshness of winter.
Explanation: I took the test
The combination of factors that is capable of limiting the population of elk in an ecosystem would be the number of wolves and the harshness of winter.
The limiting factors of a population are those factors that hinder the population of an organism from increasing unlimitedly. In other words, limiting factors hinder populations from reaching their biotic potentials.
Limiting factors can be density-dependent if they have correlations with the density of species or density-independent if they have no correlation with an organism's density.
Wolves generally prey on elks, so they limit the growth of elk's population in an ecosystem. A harsh winter will also limit the overall growth of the population of elk in an ecosystem.
Scavengers cannot be a limiting factor to elk's population because they only feed on carcasses.
More on population limiting factors can be found here: https://brainly.com/question/24077456
Which of Newton’s laws explains why the balls did not remain in the container at the end of the ramp?
Newton’s Law of inertia
Newton’s Law of force, mass, acceleration
Newton’s law of Action/ Reaction
Newton’s law of gravity
Answer:Newton's first law
Explanation:
Friction and gravitational pull are common unbalanced forces that change the motion of objects on the Earth. Friction acts on objects to slow them down, such as a ball rolling across something like a carpet or sand.
2. Is food a limiting factor for plants? Why or Why not?
Answer:
hope it helps!!
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Which statement best describes the breakdown of food in the digestive system?
Carbohydrate digestion starts in the stomach and protein digestion starts in the stomach.
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.
Carbohydrate digestion starts in the esophagus and protein digestion starts in the small intestine.
Carbohydrate digestion starts in the small intestine and protein digestion starts in the esophagus.
Answer:
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach
Explanation:
Salivary amylase is an enzyme found in the mouth it breaks down starch (a carbohydrate) into maltose. protease is the enzyme that breaks down proteins and its found in the stomach .
Answer:
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach
Explanation:
Which of the following is something that all living organisms have in common ?
A.) They all contain at least one cell .
B.)They all need a source of oxygen .
C.) They all use other organisms for food .
D.)They all find mates to reproduce .
Explanation:
B is absolutely correct answer.
HELP PLEASE
Which of the following is a result of continental drift?
It causes climate change, which puts selective pressure on organisms.
It results in intentional introduction of invasive species, leading to competition.
It causes the buildup of atmospheric carbon, leading to climate change.
It results in habitat fragmentation, due to construction of new buildings.
list the 6 main functions of sugar in food preparation and give a brief description of how it is used in this capacity
Answer:
Although the main reason for the use of sugar is its sweet taste, sugar has many other functions in food technology. The most important among these are that added sugar in foods acts as a sweetener, preservative, texture modifier, fermentation substrate, flavouring and colouring agent, bulking agent.
Explanation: i dont think this the main... but hope it helps :)
Many years ago a scientist Group E plants that produce wrinkled peas the peas from the plants produce new plants that also produce wrinkled peas the scientist concluded that something in the para plan will be transmitted to the next generation this discovery is known as
Answer:
This discovery is known as heredity.
Explanation:
In the question above, we can see an example of heredity, which is the process where a trait is passed from an ascendant to a descendant. As seen above, the wrinkled seed is a characteristic that was passed on to a plant through its parent, the plant that gave rise to it. The characteristics passed by heredity are transmitted through the continuous transfer of genetic material, present in the DNA. Since the descendants have the DNA of their parents, it is possible that the characteristics are transmitted as the generations advance.
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.
