Answer:
A. small star is formed in the center of the shrinking cloud. The star begins to do fusion
Explanation:
what chemical reaction takes place between an egg shell and vinegar ?
Answer:
The reaction of the eggshell in vinegar is an acid-base reaction. When you submerge an egg in vinegar, the shell dissolves, leaving the inner semi-permeable membrane intact. Vinegar (acid) breaks apart the solid calcium carbonate crystals (base) in the eggshell into their calcium and carbonate parts.
Explanation:
The reaction of the eggshell in vinegar is an acid-base reaction. When you submerge an egg in vinegar, the shell dissolves, leaving the inner semi-permeable membrane intact.
Vinegar (acid) breaks apart the solid calcium carbonate crystals (base) in the eggshell into their calcium and carbonate parts.
What is an example of an acid-base reaction?A salt is a product of an acid-base reaction and is made up of the cation from the base and the anion from the acid. Hydrochloric acid reacts with sodium hydroxide to form sodium chloride (a salt) and water.
Thus, it is type of acid base reaction.
To learn more about acid-base reaction click here:
https://brainly.com/question/15220646
Rivers and streams are biodiverse ecosystems that are sensitive to change.
Please select the best answer from the choices provided
A. True
B. False
It is true that river and streams ecosystem are sensitive to change.
Frequent droughts and shifting precipitation patterns lower water levels in river, lake and streams.It leave less water to dilute pollutants.High temperature cause more frequent algal bloom and reduce dissolved oxygen levels, It can cause death of fishes and can do significant harm to ecosystem.What do you understand by ecosystem?Ecosystem is a geographical area where both the abiotic and biotic factors interact.Abiotic factors include Sunlight, Water, AirBiotic factors include Animals and Plants.
To know more about ecosystem here
https://brainly.com/question/13979184
#SPJ2
Which of the following is an example of diffusion?
A water freezing into ice
B sugar dissolving in a glass of water
C rain falling from the sky
D a stone sinking to the bottom of a lake
A sugar cube is gently dissolved in a glass of still water. Diffusion is the process by which water molecules and sugar molecules interact. By swirling the water with a spoon, we can hasten the diffusion. Thus, option B is correct.
What is the diffusion?Due to the motion of the sugar molecules around the water molecules, sugar dissolves in water. Overall, it exhibits a diffusion mechanism as sugar atoms mix with water atoms.
Sugar will dissolve in water when added to it with a stirring motion. Diffusion is to blame for this, as the sugar will flow down a gradient of concentration.
Diffusion data from sugar solutions, or solutions with no polymer present, suggested that a free water behavior should only be anticipated after a bilayer has covered the sugar molecule.
Therefore, sugar dissolving in a glass of water is an example of diffusion.
Learn more about diffusion here:
https://brainly.com/question/13513898
#SPJ2
How are the molecules in photosynthesis and cellular respiration similar?
The two processes are similar in that they both produce energy, albeit in two different forms. They are different in that photosynthesis assembles the glucose molecule, while cellular respiration takes it apart
Biological molecules can be broken down by ______
reactions, where a molecule of _______
between the monomers.
breaks the bond
1. water
2. polymers
3. oxygen
4. ethanol
5. catalases
6. hydrogen
7. nitrogen
8. hydrolysis
Answer:
Biological molecules can be broken down by 8. hydrolysis reactions where a molecule of 1. water between the monomers breaks the bond.
Hope this helps girly!!
If you do intense exercises can you run out of oxygen why or why not?
Explanation:
Oxygen does not enter the body except due to some diseases and loss of consciousness, and then the patient uses a ready-made ventilator
(viewpoint)
What is the ozone layer?
A. thin layer in the lower atmosphere that protects Earth from ultraviolet rays
B. thin layer in the upper atmosphere that protects Earth from ultraviolet rays
C. thin layer in the upper atmosphere that protects Earth from supersonic rays
D. thin layer in the lower atmosphere that protects Earth from supersonic rays
Answer:
B. thin layer in the upper atmosphere that protects Earth from ultraviolet rays
why does she feel pain
which is smallest to largest form?
human tissue, human cell, bacterial cell, virus, human organ, human organ system.
Answer:
Explanation:
virus, bacterial cell, human cell, human tissue, human organ, human organ system.
The smallest to largest forms in the order:
VirusBacterial cellHuman cellHuman tissueHuman organHuman organ system.The Virus comes first as it is much smaller than the Bacterial cell and can be
viewed with an electron microscope which has a higher magnification
Cells are the smallest unit of life and they aggregate to form tissues . The
tissues then aggregate to form organs and organs to organ system which is
why the human cell comes next followed by the Human tissue, Human organ
and lastly Human Organ systems.
Read more on https://brainly.com/question/18540902
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:
How many time can you revive?
Answer:
0
we are not cats
Which skill are you using when you use your five senses to gather information
Answer:
Observing: Using the five senses to learn about an object or event, or to collect information about an object.
Measuring: Determining the length, area, volume, mass, or temperature to describe and quantify objects.
Photosynthesis is undergone by plants to produce a usable food source. Which of
the following organelles is needed for photosynthesis to take place?
Nucleus
Chloroplast
Ribosomes
Mitochondria
Answer:
Chloroplast
Explanation:
Chloroplasts are organelles found in green plants. They are the sites of photosynthesis. Chloroplasts contain chlorophyll, a photosynthetic pigment that traps light energy. This energy is used to power a series of reactions that convert water and carbon dioxide into sugars.
Freehahhaahahhagagagsgsgsgsg
Answer:Freehahhaahahhagagagsgsgsgsgsg
Explanation:
Freehahhaahahhagagagsgsgsgsgsg
Answer: Thank You for the Free Points, Brother! :)
Explanation: Free yayayyayahah
A(n) _____________ is all the living and nonliving things in a particular area that interact with one another
Answer:
ecosystem
Explanation:
hope this helps
A(n) ecosystem is all the living and nonliving things in a particular area that interact with one another.
What is an ecosystem?A(n) ecosystem is all the living and nonliving things in a particular area that interact with one another. An ecosystem includes the living organisms (plants, animals, and microbes) and the nonliving components (water, air, and soil) that make up the environment in a specific area.
These living and nonliving components of an ecosystem interact with one another, forming complex relationships and feedback loops that help to sustain the ecosystem over time. Ecosystems can vary in size from small ponds to vast oceans, and they can be found in a wide range of environments, from deserts to rainforests.
Learn more about Ecosystem here:
https://brainly.com/question/1673533
#SPJ3
The diagram above represents an animal cell. What is the function of X?
It controls energy released.
It regulates the transport of materials.
It produces proteins.
It synthesizes cellulose.
Answer:
X in the diagram represents the cell membrane and performs the function of regulates the transport of materials.
Explanation:
The cell membrane, marked with X in the diagram, is a lipid bilayer with hydrophobic properties, which acts as a semi-permeable membrane to the passage of substances.
This membrane, that covers the cell and keeps it isolated from the extracellular space, has the function of controlling or regulating the passage of materials from the extracellular to the intracellular space, as well as the exit of substances from the interior of the cell. To fulfill this function it has several alternatives of transmembrane transport.
The other options are not correct because:
The cell membrane does not control the energy released. Protein synthesis occurs in the rugged endoplasmic reticulum. Cellulose synthesis occurs inside the cell, a process dependent on photosynthesis.Answer: it regulates the transport of materials
Explanation:
The excretory system disposes waste through the stomach.
True or False?
Answer:
False.
Explanation:
Actually the stomach isn't part of the excretory system, it's part of the digestive system. The organs of the excretory system include the kidneys, large intestine, liver, skin, and lungs. The kidneys (also part of the urinary system) filter out blood from waste. The large intestine's job is to eliminate solid waste that remains after food is digested and water is extracted from the indigestible matter. The liver breaks down many substances in the blood, including toxins. Sweat glands in the skin secrete a fluid waste called sweat or perspiration; however, its primary functions are temperature control and pheromone release. The lungs (also in the respiratory system) excrete some waste products, such as carbon dioxide and water.
Hope this helps!
Help!?! With this osmosis question
Answer:
( c. ) to an area of lower concentration between sugar molecules in the bottom of a beaker.
Explanation:
"Osmosis is a process which solvent such as water in most of the cases, moves from its higher concentration to its lower concentration when two concentrations are separated by a semipermeable membrane or differentially permeable membrane. " - Naqada
"As a result of osmosis, the concentration on both sides of a membrane becomes equal. In the option c) of the question sugar molecules in the beaker is not separated by a semipermeable membrane thus osmosis will not occur." - Naqada
Sorry if I am wrong and correct me, hope this helps. Have an amazing day.
Answer:
Translate the below
Explanation:
你操了，现在我们是男朋友，你好，爱
tu mama se baña con chanclas
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.
If you want to learn more, you can read:
https://brainly.com/question/9052564
If you want to learn more, you can read:
What are the electrons in the outermost energy level called?
Answer:
The outermost energy level that (in the ground state of the atom) contains electrons is called the "valence shell" of the atom. These valence electrons are responsible for all chemical bonds between atoms.
Explanation:
Dehydration reactions remove two _____
atoms and one
______ atom, the equivalent of a water molecule.
1. water
2. polymers
3. oxygen
4. ethanol
5. catalases
6. hydrogen
7. nitrogen
8. hydrolysis
Answer:
2 Hydrogen atoms and 1 oxygen atom.
Explanation:
The chemical makeup of Water ([tex]H_{2}O[/tex]) is 2 Hydrogens and 1 oxygen. These atoms are removed from each other when dehydration occurs.
g The first phase of the Calvin cycle is the (a)_____ phase. During this phase, a single CO2 molecule located in the (b)______ of the chloroplast gets fixed with (bonds with) a CO2-acceptor molecule called (c)_____ . This is a (d)_____ (number)-carbon molecule, which becomes an unstable 6-carbon molecule once it is carboxylated by CO2. This unstable molecule immediately splits into (e)______ (number) 3-carbon molecules called (f)_____ , which are the products of this phase of the Calvin cycle.
Answer:
a) Carbon fixation phase
b) stroma
c) Ribulose bisphosphate (RuBP)
d) 5-carbon molecule
e) two carbon molecules
f) glycerate-3-phosphate (GP)
Explanation:
In the Calvin cycle (also named C3 cycle or Calvin-Benson cycle), the CO2 is reduced in a cyclic process, where the first stable reaction product is 3-phosphoglyceric acid (3-PGA), a 3-C molecule, and the CO2 acceptor molecule is Ribulose bisphosphate (i.e., Ribulose 1, 5-diphosphate). The CO2 enters the chloroplast by passing through the stomata and diffusing into the stroma of the chloroplast, which is the site where sugar is synthesized. The Rubisco enzyme or RuBP carboxylase catalyzes the first step of the cycle (i.e., the attachment of CO2 to RuBP). The result of this reaction is an unstable 6C molecule, which breaks down into two 3C molecules named glycerate-3-phosphate (GP).
Select the correct answer. Which alignment of the Sun, Moon, and Earth causes a lunar eclipse?
Answer:
A; The sun, then earth, and lastly
the moon
Explanation:
Answer:
A
Explanation:
How do the three types of neurons work together?
Answer:
Sensory neurons receive impulses and carry them from the sense organs to the spinal cord or brain. Interneurons connect sensory and motor neurons and interpret the impulse. Motor neurons carry impulses from the brain and spinal cord to muscles or glands.
Explanation:
Three types of neurons are:-
Sensory neuronsMotor neuronsInterneuronsWork of Neurons?Sensory neurons receive impulses and carry them from the sense organs to the spinal cord or brain. Interneurons connect sensory and motor neurons and interpret the impulse. Motor neurons carry impulses from the brain and spinal cord to muscles or glands.What are neurons?Neurons , also know as nerve cells, send and receive signals from the brain .These are the fundamental units of the brain and nervous system.To know more about neurons here
https://brainly.com/question/24217914
#SPJ2
the concept of doing whatever it takes to make sure our planet continues to support life as we know is called
Answer:
The answer would be Photosynthic
Explanation:
Because of its water, Earth is home to millions of species of plants and animals. The things that live on Earth have changed its surface greatly. For example, early cyanobacteria changed the air and gave it oxygen. The living part of Earth's surface is called the "biosphere".
The following statement compares different starches: Because it is branched and can be broken down to ________ by multiple enzymes at the same time, _________ is digested more quickly than _________. The following statement compares different starches: Because it is branched and can be broken down to ________ by multiple enzymes at the same time, _________ is digested more quickly than _________. lactose; amylose; amylopectin fructose; cellulose; amylopectin monosaccharides; amylopectin; amylose simple sugars; cellulose; amylose amylopectin; amylose; glycogen
Answer:
monosaccharides
amylopectin
amylose
Explanation:
Monosaccharides is any of the class of sugars such that it cannot be hydrolysed into a simpler sugar.
Amylopectin is the non-crystallizable form of starch that consists of a branch of polysaccharide chains.
Amylose is the crystallizable form of starch that consists of an unbranched polysaccharide chains
The following statement compares different starches: Because it is branched and can be broken down to monosaccharides by multiple enzymes at the same time, amylopectin is digested more quickly than amylose.
What is the purpose of cellular respiration ?
Plz answer ASAP got a test due
Answer:
To withdraw ATP from food
Explanation:
What is DNA Isolation?
Multiple Choice
copying of the DNA molecule
the extraction of DNA from viruses or cells
the rupturing of the DNA molecule
measuring the DNA molecule for transport
the moving of DNA from one cell to another
Answer:
Explanation:
To late?
what is the meaning of condition
Answer:
The existing state or state of health
Explanation:
rna and dna are which type of macromolecule
Answer:
Nucleic Acids
Explanation:
They are made of Nucleic Acids
