Why do biologists measure the number of trophic levels in an ecosystem?
A. To find new treatments for diseases
B. To make it helpful for humans
C. To see if it has any food chains
D. To check its stability and health
Answer:
I think it's D
They measure the number of trophic levels to check its stability and health
If there are 10 chromosomes in a particular cell at the start of prophase. How many will be present in the same cell after cytokinesis has occurred? Explain why you think so?
Answer:
10
Explanation:
assuming it goes through mitosis, the chromosomes are doubled and during mitosis the sister chromosomes are separated so the daughter cell has 10 chromosomes
WILL GIVE BRAINIEST!!Scientists use models of earthquakes to (5 points)
change their location
stop them from occurring
understand the process
increase the waves formed in the process
Answer:
C. Understand the process
Explanation:
When scientists create models of earthquakes, they are trying to learn more about them to try and keep people safe in the event that one does happen. It is practically impossible to change the location of an earthquake or stop it from occuring, since earthquakes are caused by the movement of massive continental plates. Scientists also definitely do not want to increase the waves formed in the process, as this would contribute to the damage. Therefore, the correct answer is choice C, understand the process. Hope this helps!
Scientists use models of earthquakes, so as to: C. understand the process.
What is an earthquake?An earthquake simply refers to a sudden, natural shaking of the ground, due to movements within the Earth's crust and upper mantle (lithosphere) which typically creates seismic waves.
In order to have a better understanding of the features of an earthquake and the processes that are associated with, scientists generally use models of earthquake.
In conclusion, earthquake models are simulations which can be used by scientists to better understand the process.
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Is knowing about physical and chemical changes of food important for a molecular gastronomy chef?
Answer: Yes,
Explanation:
Molecular gastronomy can be defined as a scientific discipline that involves the study of physical and chemical processes that may occur while cooking food. The chefs who are concerned with molecular gastronomy apply their scientific knowledge while cooking. They observe and experiment the change in food appearance, color and fragrance after cooking and try to improve the three parameters to attract the customers.
Which two hypotheses can be supported with quantitative data?
Answer:
People who eat low-protein diets are more likely to have less muscle mass.
Eating less salt lowers blood pressure over time.
A semipermeable membrane has a 2 percent salt solution on one side and a
15 percent salt solution on the other side. What will most likely occur?
A. Osmosis of water from a low concentration of salt to a high
concentration
B. Osmosis of water from a high concentration of salt to a low
concentration
c. Active transport of salt until all the salt is concentrated on one
side
D. Facilitated diffusion of salt until both concentrations are equal
Answer:
A
Explanation:
Water naturally travels from a low solute concentration to a high solute concentrated.
The correct answer is B. Osmosis of water from a high concentration of salt to a low concentration. This is due to the process of osmosis, which is the movement of water molecules from an area of low solute concentration to an area of high solute concentration.
What is the context of it ?In this case, the high salt concentration is on one side of the semipermeable membrane and the low salt concentration is on the other side. Therefore, water molecules will move from the side with a higher salt concentration to the side with a lower salt concentration, resulting in the osmosis of water from a high salt concentration to a low concentration.
The other options are incorrect because they do not accurately describe the process that occurs. Option A is incorrect because it states that osmosis will occur from low to high concentration, which is the opposite of what occurs in this situation.
Option C is incorrect because active transport requires energy and is used to move molecules against a concentration gradient, which is not happening here. Option D is incorrect because facilitated diffusion does not require energy and is used to move molecules down a concentration gradient, which is not happening here.
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A type of cellular transport is shown. Which description best identifies this type of cellular transport? Your answer: Osmosis, because energy is being used to move molecules with the concentration gradient. Active transport, because energy is being used to move molecules against the concentration gradient. Facilitated diffusion, because energy is being used to move molecules with the concentration gradient
Answer:
Active transport, because energy is being used to move molecules against the concentration gradient.
Explanation:
This picture shows active transport. That just means that energy is being used (in this case, ATP) to move molecules against their gradient (meaning, from low to high concentration). Molecules "naturally" diffuse from high-->low concentration, so to move in the opposite direction requires energy input. You can tell this because there are only 2 molecules on the top side of the membrane, but on the bottom side there are 13.
Why not A: This is not necessarily water, as in osmosis, and it's not going with the gradient.
Why not C: This is not facilitated diffusion, because molecules are going against, not with, their concentration gradient.
The description that best identifies this type of cellular transport is: Active transport, because energy is being used to move molecules against the concentration gradient.
WHAT IS ACTIVE TRANSPORT:Active transport is a type of transport that requires the input of energy in form of ATP. This is because the movement of molecules is against a concentration gradient. According to the diagram in this question, molecules are being moved into the cell with an input of ATP (energy).Therefore, the description that best identifies this type of cellular transport is: Active transport, because energy is being used to move molecules against the concentration gradient.
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Read the article and use the information to answer the question that follows. Changing Theories Explain Lamarck's ideas about how organisms changed over time.
Answer:
Lamarck thought that organisms came into being through spontaneous generation
He thought they changed from simple organisms to more complex organisms because they had an innate drive to become more complex and perfect
Lamarck thought that when organisms changed their behaviors in response to a changing environment, their bodies changed. When they used a part of their bodies more, it changed accordingly. When they used a part of their bodies less, it shrank
Explanation:
Cuz I took the L for y’all
Answer:Lamarck thought that organisms came into being through spontaneous generation
He thought they changed from simple organisms to more complex organisms because they had an innate drive to become more complex and perfect
Lamarck thought that when organisms changed their behaviors in response to a changing environment, their bodies changed. When they used a part of their bodies more, it changed accordingly. When they used a part of their bodies less, it shrank
Explanation:
Secondhand smoke only affects those who already smoke, due to increased smoke Innalati
4. (3.08 LC)
What factor best determines whether a person gets cancer? (2 points)
Maternal genes alone determine whether a peson gets cancer.
Paternal genes alone determine whether a person gets cancer.
A combination of environmental and genetic factors cause cancer.
Environmental factors alone determine whether any type of cancer occurs.
The narrator calls stem cells extraordinary. Why does she use this term to describe these cells?
Answer:
Stem cells are called extraordinary by the narrator because stems cells which is mostly gotten from bone marrow is use in medicine for regeneration and repair of damaged tissues and organs. It is use to correct part of organs that is not working properly. It has been use for treatment of diseases over the years.
Explanation:
Stem cells are special human cells that have the ability to develop into some specialized cells which can be used to regenerate and repair damaged tissues and organs.
Stem cells can be use to replace tissues that has been damaged through diseases and it has been use for treatment of different type of diseases over the years.
Answer:
All cells reproduce to make new cells. However, stem cells actually form many different types of cells. Adult stem cells can also repair tissues in the body.
Explanation:
answer on edmentum.
Help me answer these photosynthesis and cell respiration
Energy Distribution provides utilities, which are
career advancement opportunities.
services provided to people and organizations.
materials provided to people and organizations.
products for commercial consumption first.
Answer:
services provided to people and organizations
Energy Distribution provides utilities, which are products for commercial consumption first.
How Energy Distribution provide utilities?The most common media used to distribute energy are steam, air, hydronics and electricity.
These form of media creates products like electric power that offer services and career advancement opportunities.
Whereas hydronics provides utilities to people and organizations.
Hence Energy Distribution provide utilities to products for commercial consumption first.
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Hormone disruptors called phthalates are found in many detergents, perfumes, cosmetics, baby powders, body lotions for adults and babies, sunscreens, hair sprays, deodorants, soaps, nail polishes, shampoos for adults and babies, and the coatings on many timed-release drugs.
Your answer:
True
False
Answer:true
Explanation:
I just took the test
Helpp !
The nervous system interacts with the endocrine system by _
O A. translating messages from endocrine cells
O B. sending neurotransmitters to endocrine target cells
O C. sending neurotransmitters to neuroendocrine cells
D. receiving messages from hormones
Answer:
B. sending neurotransmitters to endocrine target cells
Explanation:
Your endocrine system works closely with your brain and central nervous system to control the creation of specific hormones and enzymes.
define the general difference between an autotroph and a heterotroph
Answer:
Explanation:
If we break down the word autotroph, auto means “self” and troph means "feeding" or nourishment. However, when we break the word heterotroph, we get hetero- meaning other, and troph meaning feeders.
This is the critical difference between these two groups. Autotrophs synthesize or make their own food whereas, heterotrophs cannot make their own food thus have to rely on others by eating or absorbing others. For example, plants are autotrophs because they can make their own food using photosynthesis, whereas, humans are heterotrophs because we have to eat others to survive.
Answer:
autotrophs are organisms that can produce their own food from the substances around them using light or chemical energy
heterotrophs cannot synthesize their own food and rely on other organisms plants and animals for nutrition
Explanation:
Write one scientific question about the organism in the photo.
Answer:
Please attach the photo of the organism.
Explanation:
explain what part of the day condensation usually occurs and why
Answer:
Condensation is the formation of liquid drops of water from water vapor. ... Condensation in the atmosphere usually occurs as a parcel of rising air expands and cools to the point where some of the water vapor molecules clump together faster than they are torn apart from their thermal energy
Explanation:
Which explains why the reflex reaction is important in certain situations?
O A. Motor neurons cannot form action potentials.
O B. The brain has no control over motor neurons.
O C. Interneurons are too slow at sending signals through the spinal
cord.
O D. Sensory neurons do not use neurotransmitters to send signals.
Answer:
Answer:c
Explanation:
The reflex reaction is important in certain situations because interneurons are very slow to send signals through the spinal cord.
What is the reflex?The reflex is an automatic (read immediate and constant) bodily reaction to stimulation. According to Pieron, the reflex corresponds to any activity or variation of activity of an effector (muscle, gland, etc.)
With this information, we can conclude that the reflex reaction is important in certain situations because interneurons are very slow to send signals through the spinal cord.
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The hip bone of a whale and the appendix of a human are referred to as ______because they have little current importance but were important in the
ancestors of these organisms.
A.embryological structures
B.homologous structures
C.vestigial structures
D.mystery structures
E.analogous structures
Which climatic zone is always hot and humid? arid, tropical wet, temperate continental, Mediterranean
Answer:tropical wet, is the anwers
Explanation:
The tropical wet climate zone is the climate zone that is consistently hot and humid. This climate zone is characterized by year-round high temperatures and high humidity, with average temperatures of 80°F (27°C) or more, and annual precipitation of 59 inches (1,500 mm) or more.
What is tropical wet climate zone?The tropical wet climate zone is a type of climate that can be found in areas close to the equator. It is distinguished by high temperature, year-round high humidity and abundant rainfall. Equatorial climate or tropical rainforest climate are other names for this climate zone.
One of the most ecologically diverse regions on Earth is the tropical wet climate zone, which is also an important supplier of natural resources such as timber, fruits and medicinal plants. Deforestation, climate change, and other human activities also pose threats to the region, and they have the potential to have major impacts on the natural and economic systems that depend on this climate zone.
Therefore, the tropical wet climate zone is the climate zone that is consistently hot and humid.
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Many people place bat boxes on their property to provide housing that attracts insect -eating bats. Explain how this activity has a positive effect on the environment.
Answer:
Bat boxes at homes provide housing to insect-eating bats which has two major positive effects on the environment:
Bat boxes provide bats a natural habitat and they act as natural pest control in the environment. They are very helpful for reducing or controlling the population of mosquito and balance the food chain in the environment.Bat is known as very good pollinators which helps in the pollination of flowers or spread their seeds. So bat boxes at home increase pollination in nearby areas and increase biodiversity in the environment.Hence, bat boxes at houses have a positive effect on the environment.
An experiment was designed to investigate the effect of caffeine on the rate of the
heartbeat of fruit flies. Two populations of fruit flies were grown in a lab. Both
populations were raised drinking the same type of water and the same type of food.
Both populations were exposed to the same amount of light and regulated
temperature at 20 degrees Celsius. The fruit flies' heartbeats were then monitored
at two hour intervals. The fruit flies of population one were given caffeine five
minutes before their heartbeat was checked. The fruit flies of population two
were not given any caffeine.
what is the control variable
what is the expirimental group
what is the independent variable
Name a controlled variable or constant
was quantitive or qualitative data collected
What is the original source of energy for gasoline?
O plants
O Sun
O petroleum
O fossil fuels
Answer:
Sun
Explanation:
Why anaerobic respiration is rapid than aerobic respiration
Answer:
The amount of pressure that is released.
Explanations:
Aerobic respiration is known as a major advantage, base of the amount of energy it releases. Aerobic respiration releases more energy than anaerobic respiration, causing it to become more rapid.
Answer:
Anaerobic respiration is a shorter process than aerobic respiration so a complete cycle of anaerobic respiration is shorter than one of aerobic respiration.
Explanation:
Aerobic respiration involves three stages: glycolysis (the breakdown of glucose into pyruvate), the Krebs cycle (the breakdown of pyruvate into carbon dioxide and hydrogen), and the electron transport chain (hydrogen produced in the Krebs cycle bonding to oxygen to form water).
On the other hand, anaerobic respiration has fewer stages. Anaerobic means 'without oxygen', and so the process takes place without needing any oxygen. In anaerobic respiration, glucose is broken down into pyruvate, just like in aerobic respiration, however due to the lack of oxygen, that pyruvate is broken down into either lactic acid (e.g. in humans), or ethanol (e.g. in yeast). This process is called fermentation, and it doesn't take as long as the Krebs cycle and the electron transport chain, so that's why anaerobic respiration is more rapid than aerobic respiration.
HELPPPP
can someone tell me 2 producers, 2 primary consumers, 2 secondary consumers, 2 tertiary consumers and 2 quaternary consumers in a freshwater lake.
Answer:
hope it helped
Explanation:
2 producers are bacteria and algae
2 primary consumers are microscopic zooplankton and snails
2 secondary consumers are fish and stonefly
2 tertiary consumers are eels and trouts
2 quaternary consumers are some very large birds like the eagle and other big fishes like shark or reptiles like crocodiles and so on
Answer:
2 producers are bacteria and algae
2 primary consumers are microscopic zooplankton and snails
2 secondary consumers are fish and stonefly
2 tertiary consumers are eels and trouts
2 quaternary consumers are some very large birds like the eagle and other big fishes like shark or reptiles like crocodiles and so on
Which of the following factors will most likely limit the light-dependent reactions of photosynthesis?
A. Light intensity and light quality
B. Temperature and light intensity
C. Carbon dioxide concentration and light quality
D. Carbon dioxide concentration and temperature
Answer:
C
Explanation:
L 2.2.4 Quiz: Translation
Which amino acid chain will be formed by the codons shown below?
GUC CUU CCG
Messenger
Second base in codon
RNA Codons U
c
A
G
UUU UCU UAU UGU
UUC)
Phe
UCC UAC
}Tyr
UGC)
Cys
с
U
Ser
UUA
Leu
UCA
UAA Stop UGA Stop A
UUG UCG
UAG Stop UGG Trp G
CUU CCU CAU CGU
U
CUC CCC
His
CAC CGC
Leu Pro
CUA CCA CAA
Gin
CGA
CUG CCG CAG CGG
AUU ACU AAU
Asn
AGU
AUC
Ser
lle ACC AAC) AGC
A
Thr
AUA ACA AAA
AUGStart Me ACG
Lys
AGA
AAG) AGG
Arg
GUU GCU GAU GGU
GUC GCC
Asp
GAC, GGC
G
Val
с
Ala
GUA GCA GAA
Gly
Glu
GGA
GUG GCG GAG) GGG
Arg
First base in codon
POCO POCO POCO 20co
Third base in codon
O A. Leu His Ser
O B. Val Leu Pro
O C. Pro Val Pro
O D. Val Pro Pro
Answer:
uuu ucu uau ugu uuc) phe ucc uac }tyr ugc) cys
Answer:
The answer is Val Leu Pro
A wave with a height of 5 feet and a wavelength of 15 feet has a wave base of __
Answer:
The answer is 7.5 feet.
Explanation:
When a wave has a height of 5 feet and a wavelength of 15 feet then it has a wave base of 7.5 feet. Wave base is equal to the half of the wavelength so if you consider your wavelength to be 15 feet then it is divided into 2 that would give you answer of 7.5 feet.
I hope I helped, please correct me if I'm wrong!
Indicate whether each source is reliable or unreliable.
a goverment website
a university professor’s personal blog
a commercial website
an online peer-reviewed science journal
Answer:
Reliable
Unreliable
Unreliable
Reliable
Explanation:
Government websites use the domain suffix (.gov) which demonstrates that the information being provided is from the federal government (reliable).
Blogs are not reliable, especially if they are personal (unreliable)
While some commercial websites could be right, some can skew the truth to fit their perspective or lie for financial gain (unreliable)
Peer reviewed science journals provide studies and experiments, and use real examples (reliable)
A student made a model of an onion skin cell she viewed using a microscope. The scale is 1:500.The students cell model has a length of 15cm. How many centimeters is the real cells length?
Answer:
Length of the real cells = 7500 cm
Explanation:
A scale model is a physical representation of an object that has the same aspects as that of the object.
A scale model can be used in fields like engineering, film making, salesmanship, etc
Length of the student's cell model = 15 cm
The scale is [tex]1:500[/tex]
So,
Length of the student's cell model / Length of the real cells = [tex]1:500[/tex]
15 / Length of the real cells = [tex]1:500[/tex]
Length of the real cells = 15 × 500 = 7500 cm
Answer:
7500 cm
Explanation:
we in the same grade problem i am on this test
