Answer:
b=atoms
Explanation:
An atom of a certain element has 18 protons, 18 electrons, and a mass number
of 40. At room temperature this element is a very stable gas. How many
neutrons are in this atom?
Record your answer and fill in the bubbles on your answer document. Be sure
to use the correct place value.
Answer:
40-18 = 22
Explanation:
The mass number is the sum of the neutrons and protons. You know you have 18 protons and a mass number of 40.
A _____ is a substance that speeds up a chemical reaction without being used up in the reaction
Answer:
An enzyme is a substance that speeds up a chemical reaction without being used up in the reaction.
Answer:
Catalyst
Explanation:
One example of a catalyst is yeast, it helps speed up the process of bread becoming fluffy, for example
In which situation would osmosis most likely occur
The case in which osmosis occurs is that when there is a selective permeable membrane is present and it allows only selective substances to pass through the channel.
What is osmosis?Osmosis is the process in which molecules of the solvent pass via a semipermeable membrane from a lower concentrations to higher concentration or from less concentrated solution to high concentrated solution. In the process of osmosis movement of water takes place.
There are mainly three types of osmosis and these are hypertonic, hypotonic, and isotonic. The process of osmosis is passive transport as water moves from low solute concentration to high solute concentration.
Osmosis is also known as diffusion of water or solvent via a membrane which allows only selective substance to go across the channel. The process of osmosis does not require ATP because it is a passive process.
Therefore,The case in which osmosis occurs is that when there is a selective permeable membrane is present and it allows only selective substances to pass through the channel.
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the half life of carbon-14 is 5730 years. a corpse is pulled from a bog and tested for C-14 beta radiation. the amount of radiation is 75% of the normal amount coming from living things. how long has the corpse been in the bog?
Answer:
%67
Explanation:
Rocks, temperature and water are what part of the environment?
Answer:Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.
Explanation:
I need help please !
Answer:
14. f. diffusion
15. a. excreting waste
16. b. exocytosis
17. a, endocytosis
Explanation:
14. The movement of molecules from a high concentration to a low concentration is diffusion. Active transport uses energy to move molecules against their concentration gradient (from low to high). Osmosis specifically refers to water molecules. Endocytosis is the movement of molecules inside the cells via the cell membrane engulfing it.
15. The membrane controls the substances that enter and exit the cell, therefore it is involved in excreting waste products from inside the cell.
16/17 Endocytosis is engulfing substances to bring them inside the cell. Exocytosis is the reverse process, where substances exit the cell by fusing with the cell membrane. The movement of molecules from a high concentration to a low concentration is diffusion. Osmosis specifically refers to water molecules.
more____in our atmosphere make our planet
Answer:
Explanation:
Name 3 some sources of C02.
Answer:
I am not 100% sure i can't remember but i believe it coal, oil, and natural gas. but I might be wrong.
Answer:
liquid gas and solid
Explanation:
because you can freeze water you can turn water into gas and you can have it regular
In photosynthesis what are the 2 major reactions that take place
Answer:While the mechanisms of photosynthesis are complex, the overall reaction occurs as follows: carbon dioxide + sunlight + water ---> glucose (sugar) + molecular oxygen. Photosynthesis takes place through several steps which occur during two stages: the light phase and the dark phase. Stage One: Light Reactions
Explanation:
eh it called google
Answer: light-dependent reactions and the Calvin cycle
Explanation:
(light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.
According to Chargaff's rule, base pairing in DNA should resemble which of the following?
A = T; C = G
A = C; T = G
A = G; T = U
A = U; C = G
The Char gaff rule is all about the number of adenine is equal to the number of thymine and with that the number of cytosine is equal to the number of guanine. The correct answer is option B.
What are the types of bonds that are present in between these nitrogenous bases ?The kind of bonds that are present in these nitrogenous bases are hydrogen bonds. A binds with T with two hydrogen bonds and C binds with G through 3 hydrogen bonds.
It is all about that the number of purines is equal to the number of pyrimidines. The number of adenine molecule are present totally in equivalence to the number of thymine molecules.
The number of guanine molecules are present in the molecule of DNA are totally in numbers to the cytosine. In place of thymine uracil is present which is present in RNA.
Therefore, The Char gaff rule is all about the number of adenine is equal to the number ofThe Char gaff rule is all about the number of adenine is equal to the number of thymine and with that the number of cytosine is equal to the number of guanine. The correct answer is option B.
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Thoughts on Pokémon?
Answer: i like pokemon ;)
Explanation:
Answer:
Pokémon is a thing that you enjoy more if you grow up with it
Explanation:
Which two of the three elements have SIMILAR CHEMICAL PROPERTIES (valence electrons)?
1. Li - Na - Mg
2. F - Br - O
3. P - As - Se
4. Ra - Ba - Cs
Answer:
1. Li - Na
2. F - Br
3. P - As
4. Ra - Ba
Which of the following are supported by many
observations?
hypotheses
laws
theories
Answer:
laws.
Explanation:
hypothesis is an educated guess
therous are ideas
and laws are supported by observations. like newton's law.
Answer:
laws and theories
Explanation:
bc i just answered it
Why is mass a better unit for measuring matter than weight?*
Because mass can change, but weight doesn't
Because mass is constant, while weight depends on gravity.
Because it makes more sense.
Answer:
Because mass is constant, while weight depends on gravity.
Explanation:
For example, your mass on Earth will be the same as your mass on planet Mars. Your weight however, will change depending on the force of gravity exerted on you.
How are plant and animal cells different in size and shape
Answer:
plant cells are rectangular while animal cells are spherical
Explanation:
plant cells are mostly rectangular due to the cell walls morphing them into that shape while animal cells are more sphere like in order to save space
Hope this helped
3. How do you make new cells?
Answer:
New cells are created from a process called cell division. The new cells are produced when a cell, called the mother cell, divides into new cells called daughter cells. When two daughter cells have the same number of chromosomes as the original cell, the process is called mitosis
Explanation:
will give brainliest
Which is not a statement of the Cell Theory?
Cells are the basic unit of life
All cells come from pre-existing cells
All living things are made of cells
All cells are prokaryotic and eukaryotic
Answer:
the last option is your answer
Answer:
All Cells are prokaryotic and eukaryotic.
Explanation:
the other 3 are the statements of cell theory
Cells reproduce by splitting in half, a process called cell division. What do cells need to do between divisions to make sure that they don’t just get smaller and smaller?
Answer:
Grow
Explanation:
Before every cell division, cells replicate their DNA to pass on to the daughter cells. They also grow in size and replicate their organelles to ensure that each daughter cell has sufficient resources to carry out all the activities necessary for its function. They also ensure there are sufficient nutrients to perform their tasts.
Cells only need to grow in size and contents before each cell division so as to avoid getting smaller in size with successive divisions.
Each of the daughter cells produced during mitotic cell division goes through an interphase period. The interphase period is divided into 3:
G1 phase: a period characterized by cell growth. An increase in size and volume of content is achieved in this stage.S phase: a period characterized by the synthesis of DNA. The amount of genetic materials (DNA) doubles up in this stage, whereas, the chromosome number remains constant.G2 phase: a phase in which protein is synthesized. After this stage, the cell is ready to pass through a period of division.Without going through the stages above, a cell will simply go into a dormant phase which is essentially a resting phase.
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Which of these best describes a climax community?*
Answer:
A very stable community
Explanation:
A.P.E.X
describe some home or business technologies that use spectrometric equipment to analyze the atmosphere or temperature.
Some home/business technologies that use spectrometric equipment are ;
Home security systems like fire alarms and Air conditioning systemThe fire alarms and air conditioners found in our homes are triggered when the temperature of the atmosphere changes from been too cold to been too hot or vice versa.
Home technologies that respond to changes in the environment or atmosphere are equipped with some level of communication technology which enables them to respond to changes in the environment via automation. The communication technology found in these home appliances makes use of spectrometric equipment ( measures changes of light wavelength across the electromagnetic spectrum )
Hence we can conclude that Some home/business technologies that use spectrometric equipment are ; Home security systems like fire alarms and Air conditioning system
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How many types of bones are there?
1.) 1
2.) 2
3.) 3
4.) 4
5.) 5
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
There are 5 types of bones and they would be flat, long, short, irregular, and sesamoid.
multicellular, do not move, have a cell wall, have a nucleus and other organelles, have no
chloroplasts, heterotrophs
When do enzymes stop reacting to the substrates?
Answer:
If the reaction is divalent metal ion-dependent, you can stop the reaction by adding an excess of EDTA to bind the metal.
You can kill the protein by adding perchloric acid, then precipitate the perchlorate with an equivalent amount of potassium carbonate, leaving nothing but carbonic acid in the supernatant, which bubbles off as carbon dioxide. Centrifuge the sample and take the supernatant to analyze for the product.
A rather slow method is ultrafiltration, using a micro-centrifugal ultrafilter (e.g. Microcon) with a molecular weigh cutoff smaller than the molecular weight of the enzyme. This can be done at 4oC to slow down the reaction during the separation.
Explanation:
During which stage of the life cycle is a star a ball of gas and dust?
Answer:
The sixth stage in a low mass stars life, the remains of the red giant is a glowing ball of gas about the size of earth. Nuclear fusion has stopped and the gas begins to cool.
Please help I’ll give brainlest
Answer:
Independent: the type of humming bird food
Dependent: the amount of humming birds that come to the feeder
Explanation:
Which of the following statements is true for a molecule that is phosphorylated?
A) It has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate.
B) It has a decreased chemical energy and is less likely to provide energy for cellular work.
C) It has been oxidized as a result of a redox reaction involving the gain of an inorganic phosphate .
D) It has increased chemical potential energy that may be used to do cellular work.
Answer:
The correct appropriate is Option D.
Explanation:
The phosphorylation mechanism of both a chemical compound, either through inorganic phosphate conversion other than by phosphate conversion from yet another biological phosphate. Those have improved chemical energy capacity which could be used to do cellular function.Some other possible alternatives are not connected to the situation described. So, the solution above is the right one.
The statement 'it has increased chemical potential energy that may be used to do cellular work.' is TRUE about a molecule that is phosphorylated (Option D).
Phosphorylation is a posttranslational protein modification that plays a fundamental role in many cellular processes.Phosphorylation increases the potential energy of a molecule by adding a phosphate group that contains a high-energy phosphate bond.The energy released by this phosphate bond can be used to drive many cellular processes.In conclusion, the statement 'it has increased chemical potential energy that may be used to do cellular work.' is TRUE about a molecule that is phosphorylated (Option D).
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Which of the following is an example of a non contact force
Answer:
Gravity, Electrostatic force, Magnetic force
Explanation:
A non-contact force is a force that is applied to an object by another object without contact. Gravity, electrostatic force, and magnetic force all don't need two objects to be touching in order for them to work.
On the other hand, an example of a contact force is friction, because it can only occur if two objects are touching. If you want to tell the difference between a contact and non-contact force, just ask yourself if it can occur if the two objects are not touching. If it can occur while two objects aren't touching, it is non-contact, and if it can't, it is contact.
All the options given describe a force that involves contact except for the force exerted by magnets. Thus, the correct option is C.
Magnetic force is the force exerted by magnets. It can be described as the effect exerted on a charged particle due to the magnetic field of the other particle.
It is a consequence of the electromagnetic force, which is caused due to the movement of electrically charged particles.
Two objects that are oppositely charged will have a magnetic force of attraction, whereas two objects that have the same charge will have a magnetic force of repulsion.
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Your question is incomplete. The full question probably might be:
Which of the following is an example of a non-contact force?
(a) The force exerted by us to lift a bucket
(b) push a stationary car
(c) The force exerted by magnets
(d) Force due to friction
1. How many food chains make up the food web?
2. Which organism is an herbivore?
3. Which organism is an autotroph?
4. Which organism is a third-order heterotroph? To what trophic level does that organism belong?
5. Which organism is an omnivore?
6. Which organisms belong to more than one food chain?
7. Which organism belongs to more than one trophic level?
8. What are decomposers? From which trophic levels are the organisms that decomposers feed on?
9. What does a pyramid of energy show about the amount of energy available at different trophic levels of a food chain?
10. Why do different trophic levels have different amounts of energy?
Answer:
A food web can be formed by more than one food chain, since the webs includes all possible interactions that can occur between individuals of different trophic levels.
Explanation:
Based on the scheme shown in the image
1. How many food chains make up the food web?This food network is made up of three food chains
Plant → Bird → SnakePlant → Insect → Bird → SnakePlant → insect → Frog → SnakeFood webs often include several food chains, since they are due to the interaction between organisms at different trophic levels, which actually happens within an ecosystem.
2. Which organism is an herbivore?In this case, both the insect and the bird are herbivorous organisms, since they feed of the producer, which is the plant.
3. Which organism is an autotroph?The only autotrophic organism is the plant, since it is capable of manufacturing its nutrients from sunlight and inorganic matter.
4. Which organism is a third-order heterotroph? To what trophic level does that organism belong?The third order heterotroph is the snake, since it feeds on other animals. The snake is a carnivore and can be a secondary or more commonly tertiary consumer, so it can be placed in the 3rd or 4th trophic level.
5. Which organism is an omnivore?According to the scheme proposed, the bird is omnivorous, since it feeds on both plants and insects.
6. Which organisms belong to more than one food chain?In this case, the plant, the insect, the bird and the snake are part of more than one food chain.
Plant → Bird → SnakePlant → Insect → Bird → SnakePlant → insect → Frog → Snake 7. Which organism belongs to more than one trophic level?The bird can be located in both the second and third trophic level, being a primary consumer —when it feeds on plants— or secondary, when it feeds on insects.
8. What are decomposers? From which trophic levels are the organisms that decomposers feed on?Decomposers are generally bacteria and fungi, organisms capable of degrading organic matter, thus enriching the soil. Decomposers can feed on any trophic level.
9. What does a pyramid of energy show about the amount of energy available at different trophic levels of a food chain?As the ascent of the pyramid occurs —or at the upper trophic level— the amount of energy available decreases. This is because from one trophic level to another only 10% of the energy can be used. If a plant has 5000 Kcal available, the herbivore that consumes it can only use 500 Kcal.
10. Why do different trophic levels have different amounts of energy?The main reason for the difference in energy in each trophic level is that energy is lost in each one of them, which the organisms use in their metabolism. A consequence of the metabolism is the loss of energy as heat, which is acquired by the environment.
if a star is moving towards earth it is
Answer:
a shooting star even thou its just a burning rock with a flame tail shooting across the sky XD
Explanation:
Answer:
A shooting star
Explanation:
As the human population grows, what happens to our natural-resource requirements?
They increase.
They decrease.
They do not change.
They go in cycles.
Answer:
A: They increase
Explanation:
Edge2021
As the human population grows, our natural-resource also increases which is denoted as option A.
What are Resources?This is referred to as a substance which enables an individual make profits or benefits.
When human population grows, wants also increases which will lead to an increase in the natural-resource requirements.
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