Answer:
Plants, animals and, fungi.
Explanation:
Through the process of ecological succession in the development of vegetation in an area over time, have reached a steady state.
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1. A student conducted research about the roles of molecules in metabolic processes
such as digestion. She found one experiment that revealed the following about a
certain molecule:
• The molecule can break down proteins into amino acids.
• The molecule itself can be broken down into amino acids.
• The molecule is found in high concentrations in the small intestines of humans.
The molecule is most likely-
Answer:
Enzyme- Peptidase/protease
Explanation:
According to this question, a student is conducting an experiment to determine the roles of molecules in metabolic processes such as digestion. Based on what she found out that the molecule, which itself can be broken down into amino acids, can also break down proteins into amino acids, this suggests that the molecule being described is a PROTEOLYTIC ENZYME.
This is because an enzyme is made up of proteins which can be denatured or broken down into its simplest unit (amino acids) and also, a substance that breaks down amino acid is said to be PROTEOLYTIC.
However, another observation that the molecule is found in high concentrations in the small intestine was made, hence, the enzyme is a PEPTIDASE OR PROTEASE, which are secreted into the small intestine by the pancreas to aid digestion of proteins.
How is a high mass star formed
Answer:
From Red Giant to Supernova: The Evolutionary Path ofHigh Mass Stars. Oncestars that are 5 times or moremassive than our Sun reach the red giant phase, their core temperature increases as carbon atoms are formed from the fusion of helium atoms. ... When the core contains essentially just iron, fusion in the core ceases.
Answer:
Educators' Corner
Background: Life Cycles of Stars
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The Life Cycles of Stars: How Supernovae Are Formed
It is very poetic to say that we are made from the dust of the stars. Amazingly, it's also true! Much of our bodies, and our planet, are made of elements that were created in the explosions of massive stars. Let's examine exactly how this can be.
Life Cycles of Stars
A star's life cycle is determined by its mass. The larger its mass, the shorter its life cycle. A star's mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born. Over time, the hydrogen gas in the nebula is pulled together by gravity and it begins to spin. As the gas spins faster, it heats up and becomes as a protostar. Eventually the temperature reaches 15,000,000 degrees and nuclear fusion occurs in the cloud's core. The cloud begins to glow brightly, contracts a little, and becomes stable. It is now a main sequence star and will remain in this stage, shining for millions to billions of years to come. This is the stage our Sun is at right now.
As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts. The outer shell of the star, which is still mostly hydrogen, starts to expand. As it expands, it cools and glows red. The star has now reached the red giant phase. It is red because it is cooler than it was in the main sequence star stage and it is a giant because the outer shell has expanded outward. In the core of the red giant, helium fuses into carbon. All stars evolve the same way up to the red giant phase. The amount of mass a star has determines which of the following life cycle paths it will take from there.
diagram of the life cycles of low and high-mass stars
The life cycle of a low mass star (left oval) and a high mass star (right oval).
The illustration above compares the different evolutionary paths low-mass stars (like our Sun) and high-mass stars take after the red giant phase. For low-mass stars (left hand side), after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.
On the right of the illustration is the life cycle of a massive star (10 times or more the size of our Sun). Like low-mass stars, high-mass stars are born in nebulae and evolve and live in the Main Sequence. However, their life cycles start to differ after the red giant phase. A massive star will undergo a supernova explosion. If the remnant of the explosion is 1.4 to about 3 times as massive as our Sun, it will become a neutron star. The core of a massive star that has more than roughly 3 times the mass of our Sun after the explosion will do something quite different. The force of gravity overcomes the nuclear forces which keep protons and neutrons from combining. The core is thus swallowed by its own gravity. It has now become a black hole which readily attracts any matter and energy that comes near it. What happens between the red giant phase and the supernova explosion is described below.
Butterfly shows complete metamorphosis.
True or False
Answer:
True
Explanation:
........(◕ᴗ◕✿).........
Answer:
True!
Explanation:
There are four stages: egg, larva, pupa, and adult!
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How does phosphorus normally enter the atmosphere?
a)respiration
b)transpiration
c)bacteria fixation
d)It does not enter the atmosphere.
The answer is d, it does not enter the atmosphere.
What percentage of people rank public speaking as their number one fear in life?
41%
50%
O 15%
0 95%
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4. What material passes through a hole of a strainer when sieving
is used to separate mixtures?
Answer:
Explanation:
A strainer is a device that is used to remove foreign/specific "dirt" from a liquid (usually when flowing). Strainers usually have holes just like a sieve except that this time, it separates dirt (tiny solids) from the liquid unlike a sieve that separates solid particles of different sizes.
It should however be noted that sometimes the strainer is designed to remove a valuable "dirt" from the flowing liquid.
Very small particles such as fine flour particles can pass through the hole of the strainer.
Those particles which are smaller in size of the hole of the strainer can pass through it while on the other hand, large particles can pass through it. Sieving allows the fine flour particles to pass through the holes of the sieve but prevent or stops the bigger particles from entering the sieve so we can conclude that very small particles can pass through the hole of the strainer but the large particles can't.
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Which organisms release carbon dioxide as waste?
consumers only
consumers and decomposers
producers and decomposers
producers only
Answer: B
Explanation:
Consumers and decomposers are different types of organisms capable of releasing carbon dioxide as waste.
What are decomposers?Decomposers are organisms that obtain their food from dead organic material (dead plants, dead animals, etc).
Conversely, consumers are another classification of organisms which cannot synthesize their own food sources.In conclusion, consumers and decomposers are organisms capable of releasing carbon dioxide as waste.
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What are some methods scientists have discovered that can stop a virus from spreading in its host? (Choose all that apply)
destroy the RNA polymerase altogether
prohibit the RNA polymerase from starting initiation
stop the RNA polymerase from moving along the DNA strand.
use antibiotics to destroy the RNA polymerase before initiation
Answer:
destroy the RNA polymerase altogether
prohibit the RNA polymerase from starting initiation
stop the RNA polymerase from moving along the DNA strand.
These are the correct answers
Explanation:
A virus can be stopped from spreading in its host by destroying the RNA polymerase altogether, Prohibition so the RNA polymerase from the starting initiation, and by stopping the RNA polymerase from moving along the DNA strand. Thus, the correct options are A, B, and C.
What is a Virus?A virus is a sub-microscopic organism, which is an infectious agent that replicates only when present inside the living cells of an organism by using its replication machinery. Viruses infect all the life forms, from animals and plants to the microorganisms, such as bacteria and archaea.
Viruses can be stopped from spreading in the host body by destroying the RNA polymerase, this RNA polymerase is responsible for the multiplication of RNA from host DNA in an organism. By prohibiting the activity of RNA polymerase from initiating the replication the multiplication of viruses can be stopped. This RNA polymerase moves along the host DNA and forms new strands for the replication purpose.
Therefore, A, B, and C all are correct options.
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Help if you good at biology!!
Tobias found a rock that has a mass of 475kg. He placed it in 2000ml of water and the water rose to 2025ml. What is it’s density?
Given parameters:
Mass of rock Tobias found = 475kg
Volume of initial water = 2000mL
New volume = 2025mL
Unknown:
Density = ?
Solution:
Density is the mass per unit volume of a substance.
Mathematically;
Density = [tex]\frac{mass}{volume}[/tex]
Volume of rock = New volume - Initial volume = 2025 - 2000 = 25mL
Now let us convert the mass to g;
1000g = 1kg
So; 475kg will be 475000g
So;
Density of stone = [tex]\frac{475000}{25}[/tex] = 19000g/mL or 19000g/cm³
A primitive eukaryote was discovered that displayed a unique nucleic acid as its genetic material. Analysis provided the following information: (a) The general X-ray diffraction pattern is similar to that of DNA but with somewhat different dimensions and more irregularity. (b) A major hyperchromic shift is evident upon heating and monitoring UV absorption at 260 nm. (c) Base-composition analysis reveals four bases in the following proportions. Note that xanthine and hypoxanthine are both purines. (d) About 75 percent of the sugars are deoxyribose, while 25 percent are ribose. Part A Based on these findings, which characteristics does this unique nucleic acid have
Answer:
c and d
Explanation:
(C) Even though this option seem incomplete, the information revealed also shows it's unique.
One characteristic this nucleic acid has that is different from other nucleic acid is the purines. The purines in both DNA and RNA are adenine and guanine while this nucleic acid has xanthine and hypoxanthine which are the found in the tissues and fluids of other organisms.
(d) Also, it's nucleotide has a mixture of two types of ribose sugars which is unusual because a DNA molecule has deoxyribose sugar while a RNA molecule has a ribose sugar - none of the two nucleic acids have a mixture of both types of sugar.
An example of a renewable resource is
Answer:
solar energy
Explanation:
wind energy too
what is the key to stabilizing global population?
Fish are sensitive to many environmental variables: dissolved oxygen, light, temperature, pH, clarity of water, food supply, presence of predators, etc. Fish will be attracted to different locations in a lake, based on its mix of variables.
Imagine you want to conduct an experiment to understand how just one of these variables differs in a local lake, depending on its depth. This lake reaches a depth of 17 meters. For this activity:
Pick a variable that might change as you go deeper in the lake on a given day.
Do a little research on that variable to determine how you might measure it in a lake.
Use the template below to outline an experiment to investigate this variable in the lake by depth. For each part, simply answer the question in parentheses to create your outline.
Type your response to each field in the space below that field:
Title: (Enter a brief, descriptive title. Hint: Sometimes it’s best to do this last.)
Purpose: (Why are you doing this experiment?)
Hypothesis: (What do you predict from this experiment and why?)
Procedure/Method: (How will you specifically carry out your experiment to test your prediction?)
Observations: (What specifically would you look for and record?)
Data analysis: (With this kind of data, what would be the best way to present it?)
Conclusion: [No need to enter anything here for now.]
References: (List any references you used to design the experiment. Note that for a full experiment write-up you’d also list any references you used while carrying out the experiment or in analyzing your results.)
Answer and Explanation:
Variable: dissolved oxygen
Title: Oxygen variation as a water quality indicator.
Purpose: To study how dissolved oxygen varies with depth
Hypothesis: The percentage of dissolved oxygen will decrease as depth increases.
Procedure/Method:
Selection of sampling spots, according to the morphometry of the lake, different depth, water currents inputs and outputs, aquatic vegetation, and lake type of use. In each spot water samples will be taken using a Niskin bottle. The sample will be taken from different depth: 5 meters deep, 10 meters deep, and 15 meters deep (photic zone).Dissolved oxygen (DO) will be measured in each sample, by using a multiparameter sensor. In a field sheet to evaluate the parameter, the %DO by site and depth will be recorded.Observations:
%DO in each site and depth will be recorded in order to analyze how it varies with depth.
Data analysis:
According to different indicators of water quality in a lake, the observed %DO will be compared and analyzed to evaluate the sanity state of the lake water. Example of valuation scale,
NORMAL index: Oxygen concentration in the water column is found to be sufficient for the fish survivalREGULAR: Decrease in oxygen concentration at greater depth, values below saturation in the backgroundCRITICAL: Null oxygen concentration in all or part of the column profile of water. Probable fish mortality events.According to the taken data, observations on the study site will be taken, such as the variation in oxygen concentration as it gets deeper, until reaching hypoxia level, where fishes can not survive. Data can be presented in tables and in graphs, in both cases comparing sampling sites and depth, making a focus on the valuation scale.
Conclusion:
Association of the oxygen variation with the sanity state of the lake, microbiology decomposition processes at different depths, eutrophication state, among others.
References:
- Quality monitoring in San Roque waters. INA-CIRSA. 02/26/2013
- Quality Monitoring Program of Water from Los Molinos Reservoir. Articulation and Institutional Synergy for the Water Resources Preservation. Cossavella A, Bazan R. 2018
- Limnology course. Córdoba National University, UNC, 2018
How can some thing as massive as a Pacific plate move
Answer:
convection currents
Explanation:
convection currents in the Earths mantle allow the tectonic plates to slide and grind up against each other.
I need a short personal paragraph on clean neighborhood for work.
All of us live in a neighbourhood or surrounding. We must keep our surroundings neat and clean. This will help us to live a healthy life. Keeping our surroundings clean will only help in the betterment of society. Waste or garbage should not be thrown anywhere, but only in trash bins. Throwing garbage all over the place will dirty our surroundings, pollute the environment. Controlling the use of plastic bags will help to keep our surroundings clean. One should use recycled and eco-friendly products like paper or jute bags instead of others. Littering causes land, air and water pollution. Greener surroundings look beautiful and reduce pollution. Dirtying our surroundings will cause harm to us. So, keep the surroundings clean, live happy and healthy lives.
HOPE IT HELPS YOU .Analyze your results. Which type of liquid will prevent the apple from turning brown?
Answer:
Lemon
Explanation:
The process in which the exposed "interior" of an apple becomes/turns brown is caused by enzymatic actions in the apple. This browning reaction occurs in many fruits and tubers (like banana and yam). This process requires oxygen to proceed and hence can be restricted by the presence of an antioxidant. Ascorbic acid is an antioxidant that can assist in countering the effect of the oxygen molecules in this browning.
Lemon contains a good amount of ascorbic acid which can assist in counteracting the effect of oxygen and prevent the browning from taking place.
Because the Earth is tilted on its rotational axis, both the Northern and Southern Hemispheres experience seasons. As the Earth revolves around the Sun, the angle at which sunlight hits each of these hemispheres changes.
The Sun appears _______ in the sky and for a _______ period of time each day during winter than it does during summer.
A.
higher; shorter
B.
lower; shorter
C.
higher; longer
D.
lower; longer
Answer:
b
Explanation:
-Also this is science- Which substance would heat up the most during a sunny day, and why?
Air, because it needs the most amount of energy to raise its temperature.
Seawater, because it needs the least amount of energy to raise its temperature.
Sand on the shore, because it has a relatively low specific heat.
Fresh water, because it has high specific heat
Answer: C.
Explanation: Sand because solid molecules are the closest together, and thus causing heat to transfer the fastest.
Answer: C.
Explanation: Sand because solid molecules are the closest together, and thus causing heat to transfer the fastest.
Identify biological changes that occurs to a human persons
An animal's growth rate is determined by
O many genes
O one specific gene
O only factors not related to genetics like feed
depends on the animal
How do clastic sedimentary rocks form?
Fragments of rock are squeezed and cemented together.
Plant and animal remains are squeezed and cemented together.
Solid chemicals in water harden and form rocks.
Lava cools and hardens into rock.
Answer:
Fragments of rock are squeezed and cemented together.
Explanation:
Answer:
Fragments of rock are squeezed and cemented together.
Explanation:k12 and did the quiz
What is accretion?
PLEASE HELPPPPP!!!
Answer:
b is the answer accretion means to add or to increase
Answer:
its b
Explanation:
i have the same test
Which statement best describes weather?
A The temperature is increasing as the cloud cover decreases.
B Wind speeds are greatest during the spring.
C Since 1970, yearly rainfall averages are lower than usual.
D Flash flooding has increased in many areas during the last few decades
Which best matches objects that a scientist would include on a list describing a forest ecosystem?
Answer:
A
Explanation:
Edg 2021
According to the chart on the content page, which biological molecules have carbons in a ring shape as a part of their structure?
What is the length of the x component of the vector shown below?
a. 3
b. 5
c. 0
d. 1
(I know that it isn't C)
Answer:
Im pretty sure its 3
Explanation:
What is the length of the x component of the vector shown below?
a. 3
b. 5
c. 0
d. 1
(I know that it isn't C)
Answer:
Its D 1 for A pex
Explanation:
Both of the people are s - tupid
Describe the relationship between particle motion, temperature, and thermal energy.
Answer:
The average energy of motion of particles in a substance is its kinetic energy. Therefore, temperature is the measure of the average kinetic energy of the particles of a substance. The thermal energy of the substance is the total energy of the substance.
Explanation:
We want to explain the relationship between particle motion, temperature, and thermal energy.
First, let's explain the relationship between thermal energy and temperature.
When we have a given object, as we give it thermal energy (there are different ways, like radiation, conduction, etc) the temperature of the object increases.
So we can say that the temperature is a measure of the stored thermal energy.
Now, the relation between temperature and particle motion is more interesting.
As we increase the temperature of a given object, the increase in energy (again, the temperature is related to energy) comes from an increase in the kinetic energy of the particles that make the object.
Thus, when we increase the temperature of something, the particles that conform it move more (remember that the kinetic energy is related to the velocity of the particles). This is why we usually see an increase in the volume when we heat up something.
And also this is why most elements have more volume in the gas phase than in the liquid phase, for example.
These are the relations between thermal energy, temperature and particle motion.
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have this done correctly for brainliest
Answer:
1-vacuole
2-
3-chloroplasts
4-cytoskeleton
5-Mitochondrion
6-Nucleus
7-make the proteins for teh cell
8-plant cells have two additional organelles, cell walls and chloroplasts
Explanation:
I hope this helps you
What is true about radioactive isotopes of an atom?
They are less stable.
They are more abundant.
They are more scarce.
They are more stable.
Different isotopes of the same element have the same number of protons in their atomic nuclei but differing numbers of neutrons. Radioisotopes are radioactive isotopes of an element. They can also be defined as atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.
Answer: This is the answer :D sorry im late
Explanation: