Answer:
Where a star ends up at the end of its life depends on the mass it was born with. Stars that have a lot of mass may end their lives as black holes or neutron stars. A low or medium mass star (with mass less than about 8 times the mass of our Sun) will become a white dwarf.
The initial mass of the star with which it was born will determine how the star will end its life cycle.
What are black holes, neutron stars, and white dwarfs?
Black holes are regions in space with an extremely high pull of gravitational force which cannot even be escaped by light. Black holes are formed when the central core of a dying star collapses in itself.
Neutron stars on the other hand are extremely dense dead stars. Neutron stars are extremely bright objects, unlike black holes. Black holes are extremely dark because they trap any surrounding light while neutron stars emit light.
The massive stars in the universe end up as neutron stars or black holes. A star that has a low or medium mass ends up as a white dwarf.
A white dwarf is a dying star with a mass comparable to the mass of our sun but a size comparable to the size of the earth. Thus they have high mass and low dimensions.
Therefore, the factor that determines what a star will end up as is its mass when it was born.
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which of those identifies the part of the DNA segment label x
Answer:
I need a picture
Explanation:
Which statement correctly describes how the mitochondrial uncoupling agent valinomycin inhibits oxidative phosphorylation without collapsing the proton (H+) gradient across the inner mitochondrial membrane?
a. Valinomycin carries Kt into the mitochondrial matrix, reducing the electrical component of the electrochemical gradient across the inner mitochondrial membrane.
b. Valinomycin carries Ht into the mitochondrial matrix, decreasing the mitochondrial membrane potential without generating ATP.
c. Valinomycin is a complex I inhibitor that prevents NADH oxidation and the pumping of H+ into the intermembrane space.
d. Valinomycin is an ATP synthase inhibitor that prevents H+ from moving down its concentration gradient into the matrix.
Answer:
a. Valinomycin carries Kt into the mitochondrial matrix, reducing the electrical component of the electrochemical gradient across the inner mitochondrial membrane.
Explanation:
Oxidative phosphorylation is a process by which cells generate ATP (the energy coin of the cells) by coupling an electrochemical potential gradient across the inner mitochondrial membrane created by the electron transport chain to phosphorylation of ADP. Moreover, an ionophore is a molecule that reversibly binds ions. Ionophores are often involved in the movement of ions across the cell membrane. Valinomycin is an ionophore that mediates the transport of potassium (K+) ions down a concentration gradient, which is capable of disrupting the gradient across the membrane by modifying the K+ gradient. Valinomycin binds to K+ ions and enables them to pass more rapidly across the mitochondrial inner membrane, thereby neutralizing the excess of negative charge inside the mitochondrial matrix and thus slowing ATP synthesis.
Is a plant that has the natural ability to protect itself against predation a genetically engineered organism
Answer:
No, genetically engineered organisms are engineered by humans. The plant evolved to be this way.
Explanation:
Answer:
If it's a natural ability for the plant, it's probably not genetically engineered. It depends on the plant species/fruit.
Explanation:
Predation: A biological interaction where one organism, the predator, kills and eats another organism, its prey.
Genetically Engineered Organism: An animal, plant, or microbe whose DNA has been altered using genetic engineering techniques.
In most cases with let's say a pepper plant, the plant will produce a chemical compound called capsaicin. This is what makes the peppers spicy. It really just depends on the plant we're talking about.
Do skeletal muscles work alone?
Oran fills in the table below to organize information about the gas laws.
Gas law
Gay-Lussac's
Boyle's
Charles's
Constant
1
3
5
Changing
2
4
6
In which numbered cells should he place pressure?
O 2, 4, and 5
O 1, 4, and 6
O2, 3, and 5
O 1, 3, and 6
The correct option is D.) 1, 3, and 6 because pressure is the changing factor in Gay-Lussac's Law, the constant factor in Boyle's Law, and the changing factor in Charles's Law.
Gay-Lussac's Law states that the pressure of a given quantity of gas held at constant volume is directly proportional to the Kelvin temperature which means the pressure of a gas increases as the temperature increases, and decreases as the temperature decreases.
Boyles Law states that the pressure of a gas is inversely proportional to its volume that means as the volume of a gas increases, the pressure of the gas decreases, and vice versa.
Charles's law is a basic physical law that states that the volume of a given amount of gas at a constant pressure is directly proportional to its absolute temperature. This means that when the temperature of a gas increases, its volume also increases, and vice versa.
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A population is a collection of all the types of organisms in an area.
Please select the best answer from the choices provided
ОТ
OF
Put
the following in order to show how seafloor spreading occurs. 1 New ocean floor is added to Earth's surface. 2 New crust slowly moves away from the ridge. 3 Magma oozes out of the rift valley. 4 Magma rises from the mantle. 5 Magma cools and forms new crust.?
Answer:
yes
Explanation:
6. Examine the specimen in the photograph below. a. Explain the origin of the two circular openings on this specimen. ____________________________________________________________ b. Tell what sort of organism most likely made these circular openings, and why they are located in this particular place on the specimen. ____________________________________________________________ ____________________________________________________________ c. What might have caused the light-colored circular patches near the top edge and on the left side of this specimen
Why are phytoplankton essential to aquatic life zones?
=Answer:Phytoplankton are essential to aquatic life zones because: they provide the basis of food chains. Log in for more information. Added 5/22/2016 9:52:12 AM This answer has been confirmed as correct and helpful.
Explanation:
Which is not a form of precipitation?
Please help ASAP
A Snow
B Fog
C Sleet
D Hail
Answer:
B: Fog
Explanation:
The four types of precipitation are snow, rain, sleet, and hail. Fog is technically a cloud.
What is an example of a problem that a chemical engineer solves.
Answer:
Well, it would be easier if I had choices, but here's what I found:
"Chemical engineers also develop solutions to environmental problems, such as pollution control and remediation. And yes, they process chemicals, which are used to make or improve just about everything you see around you.""Another source mentioned that they use chemistry to solve everyday problems. They also help make [them] as environmentally safe as possible, and eliminate as much waste as they can."Hope this helps! :)
How does the washing of hands help prevent a societal problem
Answer:
It reduces the spread of disease.
Explanation:
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Which is not a fossil fuel
Group of answer choices
coal
nuclear
natural gas
Petroleum
Natural gas is not a fossil fuel
hope it is helpful to you
Please help.What would you expect to occur if you were to repeatedly lift 25 pounds over your head for 1 minute,
rest for 1 minute, and then repeat the exercise? Why do you expect this outcome?
Answer:
Strengthen the arms.
Explanation:
If a person repeatedly lift 25 pounds of weight over the head for 1 minute and then rest for 1 minute, the outcome of this exercise is to strengthen the muscles of the arms. The lifting of weight with the help of arms, the muscles of the arms will get stronger and increase occurs in the width of the arms. This exercise done by bodybuilders to get their arms stronger as well as athlete for stronger arms and hand muscles so the outcome of lifting the weight will leads to the increase in the strength of the arms.
NEED HELP PLZ!!! ASAP!! (someone else deleted my question)
Which of the following happens during a solar eclipse?
The moon appears red.
The moon casts a shadow on Earth.
Earth, the moon, and the sun form a triangle.
Earth comes between the sun and the moon.
Ok so I'm Confused, that last answer- Shouldn't that say the moon comes between the sun and the earth? This is what it says on my test instead..
Answer:
C
Explanation:
In a solar eclipse the moon crosses in front of the sun, casting a shadow on the Earth.
Explanation:
may be helpful
the moon casts a shadow on earth
Indicate whether the statements below are TRUE or FALSE.
1. You work with two sugars. Glucose (MW = 180 Da) and Sucrose (MW= 342 Da). You make various solutions of each sugar separately and compare them. When you compare two 1-liter solutions containing these sugars at a 10mM concentration, there are more molecules of sucrose in 1 liter because its MW is higher than that of glucose.
2. When you compare two solutions at the same percentage concentration (e.g. 1%), the molarity (= concentration in mole/liter) is higher for glucose because the molecular weight of glucose is lower.
3. When you have 1 liter of a solution containing 90g of glucose, you must use 171g of sucrose to make a 1-liter sucrose solution with the same molar concentration.
Answer:
Hello! Your answer would be, BELOW
Explanation:
1: TRUE
2: TRUE
3: FALSE
Hope I helped! Ask me anything if you have questions! Brainiest plz. Hope You make a 100%! Have a nice day! -Amelia♥
What is the greatest source of carbon that enters the ocean
from the atmosphere?
a
carbon monoxide
w
b carbon dioxide
C
bicarbonate ions
Answer:
c.)carbon dioxide
Explanation:
Most carbon enters the ocean when carbon dioxide in the atmosphere dissolves in ocean water. When carbon dioxide dissolves in water (H2O), it forms an acid called carbonic acid (H2CO3). The reaction is given by the equation: CO2 + H2O ↔ H2CO3.
I would like a pretty fast answer, please.
Scientists once thought that life spontaneously arose from nonliving things. It took extensive experimentation and the invention of new technology to confirm the tenets that now make up the cell theory. Now, we don't even question that cells are the basic units of life and only come from preexisting cells. What technology had the biggest impact on the development of the cell theory?
A) centrifuge
B) electrophoresis
C) microscope
D) telescope
Answer:
Microscope.
Explanation:
Microscopes were extremely influential in the development of cell theory, as they allow us to see down to the level of cells and observe them. Through process of elimination, we know it cannot be a telescope (used for observing large, far away objects) or a centrifuge (separates substances based on density). Electrophoresis is moreso used for DNA, and not for the entire cells.
Answer parts A, B, C, D
Photo Attached
a). a microRNA (miRNA) is a small non-coding RNA involved in transcriptional and post transcriptional regulation of gene expression. Given the mRNA molecule below, suggest an example of a complementary 10 nucleotide miRNA. circle or highlight the sequence on the mRNA template to which your miRNA will bind, give the complementary 10 nucleotide sequence and clearly label the orientation of the miRNA molecule.
mRNA region: 5’-GUAGUACUGAUGGUCCAGUACGUGCUAGGUCGCUAGUAGUUCGAUGCAGUAUUAU-3’
b). what is the consequence of this miRNA binding to the mRNA above?
c). what happens when the miRNA is not completely complementary to the mRNA it is attached to?
d). what is one theory explaining the evolution of the RNAi pathway? what important research function has RNAi served since its discovery?
Answer:
b
Explanation:
PLEASE HELP I HAVE AN EXAM !!!
For one meiotic division all four daughter sperm cells that are produced have the wrong number of chromosomes; two cells have one extra chromosome while the other two are each missing a chromosome. During which phase of meiosis did the problem most likely occur? What is this problem called?
Answer:
Nondisjunction occurs during anaphase I of meiosis I
Explanation:
Brainliest Please?
state two functions of muscles found in the alimentary canal of mammals
In which of the following scenarios does skin help to maintain body temperature?
O When jumping into cold water, one's skin releases body heat into the water.
O While walking during a hot summer day, sweat on the skin evaporates and cools the body.
O After accidentally touching a hot cookie sheet, a blister forms on one's finger where all the heat entered the body.
After a long run, an Olympic athlete stretches out her arms and legs.
Answer:
B
Explanation:
While walking during a hot summer day, sweat on the skin evaporates and cools the body.
Describe how and why this happens (try to do an easy description)
A comet in space continues to move without slowing down or slowing up.
Answer:
because there is no force acting in the comet making it able to go on forever without change in its path or speed
explanation
newton's first law
According to the EPA, what are three benefits to geothermal heat pumps?
Answer:
Environmentally Friendly. Geothermal energy is more environmentally friendly than conventional fuel sources such as coal and other fossil fuels.Renewable.Reliable. ..
Explanation:
Speciation that involves the formation of many different species from one
common ancestor is called
A. linear adaptation
B. adaptive radiation
C. gradual speciation
D. natural selection
Answer: adaptive radiation
Explanation:
Return to the MyPlate food plan calculator, and make an eating plan for someone whose weight and age are different from yours. You can change the person’s age, gender, and activity level. How does this checklist differ from yours? Why do you think the person’s energy needs are different?
Answer:
Increase consumption of food to increase weight.
Explanation:
There is my friend who is very weak and thin about 52 kg weight and he is one year older than me. I wanted to increase his weight up to 70 kg so I will recommend him to eat more nutritive food having large amount of proteins because proteins made muscles in the body. I suggest him to eat more food and exercise regularly to have a muscular body. The checklist is different from my checklist due to different goals. I wanted to lower my weight and increases the weight of my friend. My friend's energy needs are different from mine due to different goals to achieve.
Answer:
Males generally need more calories than females. Because men have an overall larger body in both height and weight, they need to consume more calories. For a male who is 20 years old, 5 feet and 10 inches, weighs 198 pounds, and has moderate physical activity, he should consume about 2,800 calories per day. That is about 1,000 calories more than my average caloric intake. To consume that many calories, he should eat 2 ½ cups of fruit, 3 ½ cups of vegetables, 7 ounces of protein, 3 cups of dairy, and 10 ounces of grains per day.
Explanation:
Imagine that fully functioning kidneys have been successfully created through bioengineering. What data analysis would measure the effectiveness of bioengineered organs in improving access to organ transplants among diverse groups of people, and what evidence would be needed to demonstrate that bioengineered organs have improved access
Answer:
The correct data analysis and evidence is:
Analysis: Compare the percentage of different ethnic groups who receive kidney transplants before and after bioengineered kidneys are available.
Evidence: A greater percentage of African Americans, Asians, and Pacific Islanders, and Hispanic/Latinos receive transplants after bioengineered kidneys are available compared to before
Explanation:
Bioengineered organs may be used to repair organs that have been destroyed. If the bioengineered organs are identical to the initial ones, transplantation rejection may be reduced.
So, to assess the effectiveness of organ donation adoption in people of various ethnicities, we should compare the percentage of people of various ethnicities receiving organ transplants before and after bioengineered organs became viable, and look for signs of a higher percentage of people of various ethnicities receiving organ transplantation after bioengineered organs became available.
The number of different species living in a defined area is known as which of the following?
• bioconcentration
• habitat
• preserve
• biodiversity
Answer:biodiversity
Answer:
Biodiversity
Explanation:
"Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity. "
- wiki
Please help I will give brainliest. If you do not know the answer than please do not respond and waste my points.
1. A 2.G 3.D 4.I 5.B
how many corals are dead in the Caribbean?
Answer:
over 50 percent of the world's coral reefs have died in the last 30 years and up to 90 percent may die within the next century—very few pristine coral reefs still exist. The impact of our changing climate on coral reefs was manifested by the third global bleaching event in 2015/16.
Explanation: