When pyruvic acid loses carbon dioxide it becomes what acid?
Answer:
Acetyl CoA
Explanation:
After glycolysis but prior to the beginning of the citric acid cycle (also called the Kreb's cycle), pyruvic acid (pyruvate) loses a molecule of carbon dioxide. The resulting molecule is called Acetyl CoA. This is called pyruvate oxidation and is an important intermediate step in aerobic respiration.
Some one pls help need done fast
6. Jayden recently learned that the atmosphere is made of gases. Which is NOT a way in which
gases are helpful to life on Earth?
A. It provides carbon monoxide to help plants grow
B. It protects us from the Sun's harmful rays
C. It allows us to breathe
D. It protects us from meteors
It’s earth and space science
Answer:
B
Explanation:
It protects us from harmful rays
What is a muskeg? land form, mineral, animal, swamp, plzzz help me on this question I can't figure it out.
Answer:
a North American swamp or bog consisting of a mixture of water and partly dead vegetation, frequently covered by a layer of sphagnum or other mosses.
Explanation:
Answer:
Swamp
Explanation:
I guess
If you are looking at an object that measures 0.5 mm and the image you see is 10 mm long. Your friend is looking at an object that is 0.1 mm long using the same magnification. What is the size of image does your friend see?
The size of the image seen by a friend has been 2 mm.
What is magnification?Magnification can be given as the process of enlarging the image to a degree unlike the physical and the apparent size. The use of magnification glass has been forming the enlargement of the images or objects.
The magnification can be given as:
m = v/u
Where, m = magnification, v = object height, and u = image height
The size of the object (v) = 0.5 mm
The size of the image seen (u) = 10 mm
The magnification (m) of the image seen by a person has been:
m = 0.5 mm / 10 mm
m = 0.05
The image seen by a friend of the object (u) of 0.1 mm with a magnification (m) of 0.05 is:
0.05 = 0.1 mm/ u
u = 0.1 mm/0.05
u = 2 mm
Thus, the size of the image seen by a friend with the magnification same as the person has been 2 mm.
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Identify What two words are used to describe
the number of cells in an organism?
Does anyone know all the answers???
Answer:
no sorry
Explanation:
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:
Help if you good at biology!!
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
what is the key to stabilizing global population?
A student is given a small amount of unknown tan-colored liquid substance. This unknown liquid is placed into a glass of water and mixed. Despite mixing, the tan liquid remains separated from the water and collects as a large droplet at the top. Which of the macromolecule groups is this liquid MOST likely to be a member of?
A.
proteins
B.
carbohydrates
C.
nucleic acids
D.
lipids
Which of the following best describes the flow of energy through a food chain
Answer:
C.Energy flows from primary producers to consumers, in one direction only.
Explanation:
your welcome
The one that best describes the flow of energy through a food chain is energy flows from primary producers to consumers, in One Direction only. The correct option is c.
What is food chain?A food chain is a linear network of links in a food web that begins with producer organisms and ends with an top predator, detritivores, or decomposer species.
A food chain also shows how organisms are related to one another through the food they consume. Every level of a food chain corresponds to a distinct trophic level.
Food chains are significant because they reveal the intricate relationships that exist within ecosystems.
They can show how each organism is dependent on another for survival. Food chains also show what happens when a problem occurs and a producer or consumer is lost. Entire communities can crumble.
Thus, the correct option is c.
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Your question seems incomplete, the missing options are:
a. Energy flows between primary producers and consumers, in either direction
b. energy flows from consumers to primary producers, in One Direction only
c. energy flows from primary producers to consumers, in One Direction only
d. energy flows between primary producers and consumers, in an endless cycle
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
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
According to the chart on the content page, which biological molecules have carbons in a ring shape as a part of their structure?
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.
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.
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.
What molecule makes up 3/4 of the Earth's surface and all life could not survive without it?
Answer:
Ozone
Explanation:
Ozone is a molecule made up of three atoms of oxygen. It works a lot like sunscreen, blocking out harmful ultraviolet (UV) rays from the sun. In recent years, the amount of ozone in the atmosphere has decreased. So will the Earth, and all of the life on it, get sunburned?
What 4 things do both eukaryotic and prokaryotes cells contain?
Answer:
Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment.
Explanation:
The similarities between the eukaryotic and prokaryotic cells are:
Cell membraneRibosomesDeoxyribonucleic acid (DNA)Cell wallEukaryotic cells are those cells that contains organelles that are membrane-bound. These cells are found in plants, animals, fungi, and protists.
Prokaryotic cells are those cells that does not contain membrane-bound organelles. The cell structure is simple with no definite nucleus.
There are four components that can be found in both the eukaryotic and prokaryotic cells. They include:
Cell membrane: This is a semi-peameable membrane that surrounds the cell.Ribosomes: They are structures that are specialized for protein synthesis.Deoxyribonucleic acid (DNA): This is a hereditary material.Cell wall: This contains cellulose that helps protect the cell.Learn more here:
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what word best describes the structure of a cell membrane
Answer:
Layered
Explanation:
Cell membranes are based on lipid bilayer. Plasma membranes consist of a lipid bilayer with proteins embedded in the bilayer. The principle lipids are phospholipids. A phospholipid molecules has a hydrophilic head with a phosphate group as part of its structure and two hydrophobic tails.
1. Which structure connects muscle to bone and allows force to be transmitted from the muscle to move the skeleton?
2. What is the muscle that pumps the blood throughout the body?
3. Which type of muscle is found in your digestive system?
4. What are skeletal muscles?
5. What are the three major types of muscles in the human body?
6. What is the strongest muscle of the human body?
7. What is the fastest muscle of the human body?
8. What do you know about muscle contraction and relaxation?
9. What are antagonistic muscle pairs?
10. During which process does the muscle generate a force? Is it contraction or relaxation?
1. The structure that connects muscle to bone and allows force to be transmitted from the muscle to move the skeleton is the Tendon. 2. The muscle that pumps the blood throughout the body is the Cardiac Muscle.3. The type of muscle found in the digestive system is the Smooth Muscle.
4. Skeletal muscles are the muscles that control the voluntary movements of the body. 5. The three major types of muscles in the human body are skeletal muscles, smooth muscles, and cardiac muscles.
6. The strongest muscle of the human body is the Masseter muscle.7. The fastest muscle of the human body is the eye muscle.
8. Muscle contraction is the process by which a muscle develops tension and produces force, whereas muscle relaxation is the process by which the muscle releases tension and becomes less forceful.
9. Antagonistic muscle pairs are a set of two muscles that have opposite functions and work together to control movement around a joint.
10. Muscle generates a force during muscle contraction.The process during which a muscle generates a force is muscle contraction.
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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
How is a molecule like glucose related to an organism?
Glucose is combined with oxygen and releases usable energy, carbon dioxide, and water. Cells can use that extra energy to power their functions. The energy isn't just floating around....ATP is the power molecule used by all the cells of an organism to power the secondary reactions that keep us alive. Hope this helps, if you need more calrafocation feel free to ask me in the comments!
A molecule of glucose that plays a vital role in the metabolism of the most of living organisms. Glucose is the 6 carbon molecule which plays the an important role in the metabolism cycle and the chain.
What is the molecule that is related to the glucose ?A molecule like glucose that is related to the glucose is the galactose which is also a sugar.
Glucose is a sugar that plays a vital role in the metabolism of most living organisms. It is manufactured by plants and certain bacteria and protists during photosynthesis. Glucose is the main source of chemical energy for cell functions in organisms from bacteria and plants to humans.
Photosynthesis requires the sunlight with carbon dioxide and water as the starting reactants. When the process completes, photosynthesis releases the oxygen and produces the carbohydrate molecules when the most commonly compound is glucose. These molecules contain the energy molecules that are living things that need to survive.
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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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All of the following occur in both DNA and RNA EXCEPT
a.four nitrogenous bases.
b. a phosphate-sugar backbone.
c. a double-stranded molecule.
d. All of these are found in both DNA and RNA.
Answer:
a
Explanation:
because there are only 2 bases that occur in both
Answer:
It is c
Explanation:
DNA is a double helix, RNA is a single strand
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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What percentage of people rank public speaking as their number one fear in life?
41%
50%
O 15%
0 95%
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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.