Fireflies emit light. The production of light by an organism is called bioluminescence. To generate visible light, cells in a firefly's tail produce thousands of luciferase enzymes. Luciferase binds to a chemical called luciferin. Once bound, the luciferase enzyme speeds up a chemical reaction that combines an oxygen molecule and luciferin to produce oxyluciferin. This reaction requires energy and releases light. Which of the following best describes how the luciferase enzyme speeds up the chemical reaction? F Luciferase increases the amount of time the light is visible. G Luciferase decreases the amount of energy required for the reaction to start. H Luciferase increases the number of sites on luciferin that must bind to oxygen. J Luciferase decreases the temperature of the environment inside the body of the firefly.
Answers
Answer:
Fireflies emit light. The production of light by an organism is called bioluminescence. To generate visible light, cells in a firefly's tail produce thousands of luciferase enzymes. Luciferase binds to a chemical called luciferin. Once bound, the luciferase enzyme speeds up a chemical reaction that combines an oxygen molecule and luciferin to produce oxyluciferin. This reaction requires energy and releases light. Which of the following best describes how the luciferase enzyme speeds up the chemical reaction?
Explanation:
b
The description that best describes how the luciferase enzyme speeds up the chemical reaction is - Luciferase decreases the amount of energy required for the reaction to start.
Fireflies generate a chemical reaction that allows their body to emit light, inside their body. This light generation is called bioluminescence. This process involves various steps:
Oxygen binds with calcium, luciferin chemical with ATP to make oxyluciferin.In the body of fireflies, there is the production of an enzyme called luciferase.This chemical reaction takes place in presence of luciferase that speeds up this reaction by decreasing the activation energy of the reaction.At the end of the reaction body of fireflies light up.Thus, the correct answer is - Luciferase decreases the amount of energy required for the reaction to start.
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Related Questions
isolation occurs when two species occupy different habitats within the same geographical range.
Answers
Question:
_____ isolation occurs when two species occupy different habitats within the same geographical range.
Answer:
Habitat
Explanation:
Habitat isolation occurs when individuals in two populations are separated geographically. For example by a river or a mountain range. These organisms are much less likely to interact with each other and attempt to reproduce.
Habitat isolation is a barrier to gene flow (mixing of genes in two populations) and is a mechanism of speciation.
Is the cheek cell a eukaryote or prokaryote?
How do you know?
Please show how you know I give Brainlest
Answers
Answer: Eukaryote.
Explanation: Eukaryote cells are cells that make up an organism with multicellular properties. Like for example a cat, a human, and a raccoon all have Eukaryote cells because they are not unicellular.
True or False
Waste released by the respiratory system is only carbon dioxide
Answers
Answer:
False
Explanation: Carbon Dioxide and Water are the only two waste products released by respiration.
]
In these chemical compounds, C is for carbon, O is for oxygen, N is for nitrogen, and K is for potassium.
Which chemical compound is most likely inorganic?
O H₂O
OCH1
Answers
Answer:
the firt one.
Explanation:
it lacks the thing that makes organic things.
ahaha<3 still more questions luv
Answers
Answer:
organism, the leopard frog is an organism made up of other tissues and organs.
Why are ion channels necessary to transport ions into or out of a cell?
Answers
Answer:
Ions carry electric charges and are not soluble in the lipid bilayer of the cell membrane.
Explanation:
I found it on google lol
Ions are too large molecules to diffuse through the cell membrane hence require some proteins to facilitate their transport. Ions channels helps in transporting the ions through the cell membrane and the flow of current through the membrane.
What are ion channels?
Ion channels are the type of transport proteins which are present in the cell membrane that facilitates the movement of ions through the membrane. Cell membrane is selectively permeable in nature and thus does not allow many molecules to transport through it.
Ion channels facilitates the passive movement of ions across the cell membrane and are essential for cell survival. Ion-channels helps in elucidating the structure-function mechanisms of the proteins present in the membrane. Ion channels help in creating ion gradient and moving charge through the membrane.
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Carrie is conducting an experiment on a solution. The solution’s initial pH is 10. Then, as Carrie gradually adds Compound X into the solution, the pH decreases to 5. Which is the most likely identity of Compound X? *
Answers
Answer:
Compound X must be an acid
Explanation:
Acids have a lower pH than alkaline solutions. When you add an acid to a solution, the pH drops, as has happened here. If the pH did not change, we would assume compound X was neutral. If the pH increased, we would assume compound X was even more alkaline than pH 10.
which one of the followin is not an organic compound
Answers
There is no option/choice to choose
Choose all the answers that apply.
The cell wall _____.
A.) is thick and rigid
B.) is made of cellulose
C.) does not allow the transport of chemicals
D.) is only present in animal cells
E.) supports and protects the cell
Answers
Answer:
The cell wall is thick and rigid, made of cellulose, and supports and protects the cell.
Describe the differences and similarities between mitosis and binary fission.
Answers
Answer:
Binary fission is a method of asexual reproduction which single-celled organisms, usually prokaryotes, use to create a copy of themselves. Another term for the process is cellular cloning. Mitosis is cell division that results in two identical daughter cells and is primarily used for growth of an organism.
Explanation:
Binary fission has been known as method of asexual reproduction which single-celled organisms, usually prokaryotes, use to create a copy of themselves. Another term for the process is cellular cloning.
What is mitosis?Mitosis is cell division that results in two identical daughter cells and is primarily used for growth of an organism.Chromosomes are generally seen below a mild microscope best for the duration of the metaphase of molecular division.
The chromosomes are separated by a structure called the mitotic spindle. A chromosome is a lengthy DNA molecule with component or all of the genetic material of an organism. In maximum chromosomes the very lengthy skinny DNA fibers are lined with packaging proteins; in eukaryotic cells the maximum vital of those proteins are the histones.
These proteins, aided by chaperone proteins, bind to and condense the DNA molecule to keep its integrity. These chromosomes show a complicated third-dimensional structure, which performs a large position in transcriptional regulation. Chromosomes are generally seen below a mild microscope best for the duration of the metaphase of molecular division.
Therefore, Binary fission has been known as method of asexual reproduction which single-celled organisms, usually prokaryotes, use to create a copy of themselves. Another term for the process is cellular cloning.
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Which of these best explains the impact of radiation on the geosphere?
Land is heated up by the sun's energy.
Water is heated up by the sun's energy.
Water heats up the air surrounding it.
Land heats up the air surrounding it.
Answers
Answer:
I need points
Explanation:
Yeet
What type of mutation would result (nonsense, missense, silent,
Frame-Shift)
Answers
Answer:
Nonsense missense silent
which tissue provides support for rhubarb
Answers
Answer:
I think the answer is sclerenchyma tissue
What are the three steps scientists take to evaluate a scientific explanation?
Answers
Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions.
Which of the following correctly differentiates between the science in the time of Aristotle and science in the time of Galileo?
a) In Galileo's time, science was more like philosophy, whereas in Aristotle's time, it involved objective, empirical test.
b) In Aristotle's time, science was more like philosophy, whereas in Galileo's time, it involved objective, empirical test.
c) In Galileo's time, science was practiced only by great thinkers, whereas in Aristotle's time, it could be practiced by anyone.
d) In Aristotle's time, science was practiced only by great thinkers, whereas in Galileo's time, it could be practiced by anyone.
Answers
Answer:
the answer is b i believe:)
Explanation:
hope this helps love:))
Fats,waxes, oils and steroids are all examples of which macromolecule
Answers
Answer:
Fats, waxes, oils and steroids are all examples of macromolecule " lipids "
How much time does it take a person to walk 8 km east at a velocity of 4 km/h
Answers
Answer:
it takes 2 hours
Explanation:
brainlyest?
Answer:
2 hours
Explanation:
Time = Distance ÷ Speed
What happens when self-determination mechanisms break down?
Answers
Answer:
When self-determination mechanisms break down it mistakes self-tissue as foreign agents and pathogens. This results is Auto-Immune disease.
HOPE THIS HELPS!
When the self-determination mechanisms break down, the body misinterprets its own tissues as foreign antigens, which activates the autoimmune mechanisms to destroy the body's own cells, mistaking them for foreign factors, this happens mainly in mantle autoimmune diseases.
Autoimmune diseases are a group of diseases in which tissue damage is caused by a humoral or cell-mediated immune response to a person's own antigens.
What are antigens ?In immunology, an antigen (Ag) is a molecule or molecular structure or any foreign particle or pollen grain that can bind to a specific antibody or T-cell receptor. The presence of antigens in the body can trigger an immune response. The term antigen originally referred to a substance that is a generator of antibodies. Antigens can be proteins, peptides (chains of amino acids), polysaccharides (chains of monosaccharides/simple sugars), lipids or nucleic acids. Antigens are recognized by antigen receptors, including antibodies and T-cell receptors.
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Consider the following events that take place when rip
currents occur.
Which list shows the order of events in the productie
rip currents?
A. Waves travel to the beach.
B. Waves are trapped by the sandbars.
C. Waves reach the shore and go back to the ocean.
D. Waves speed up and flow between the sandbars.
E. Waves are broken by the sandbars.
O A, B, C, D, E
O A, D, C, B, E
O A, E, C, B, D
O A, E, C, D,B
Answers
Answer:
Its C, I took the quiz.Explanation:
Sorry this is lateAnswer:
c
Explanation:
9. The table below lists three characteristics of an atom of an element.
Number of Protons
Number of Neutrons
Number of Valance Electrons
37
48
1
An atom of which element is described by the data in the table?
A Radon (Rn)
B Cadmium (Cd)
C Rubidium (Rb)
D Astatine (At)
Answers
Answer:
C. Rubidium
Explanation:
Rubidium has 37 protons
Answer: Rubidium (Rb)
Explanation: just did it and got it right
Every living thing is made up of one or more _____
Answers
Answer:
cells is the correct answer
What do rabbit, deer, and squirrel have in common?
Answers
Answer: A nucleus and fur, eyes, limbs, a mouth, a spine, a nose, lungs, heart, organs, liver, vains, blood probably more
Explanation:
Answer:
they can live in the forest.
they drink water.
they breath.
they bleed.
they can see.
they can jump.
they can eat.
they only eat plants.
they have fur.
they can be the same color.
they can be small.
they all run.
they all make noise.
they can make baby's.
they can sleep.
I'm so tired why am I here... just to suffer?
A potassium ion (K+) would most likely bond with
Answers
Please let me know if this helped :)
Help guys I need this ASAP
Answers
Answer:
Probably A
Explanation:
A population of frogs in a pond began with 67 individuals. Over one year, the population changed to 53.
Which are two possible reasons for the change within the frog population?
emigration or increase in death rate
emigration or increase in birth rate
immigration or decrease in death rate
immigration or increase in birth rate
PLZ HURRYYYY 20 POINTS
Answers
Answer:
A. emigration or increase in death rate
Explanation:
i just took the test and got it rigt lol
The two possible reasons for the change within frog population is emigration or increase in the death rate. Thus, the correct option is A.
What factors affect the population?The major factors which affect the population of a species are birth rate, death rate, and migration of the species.
Birth rate is the number of individuals born in a population in a particular time period. Birth rate adds more individuals to a population.
Death rate is the number of individuals die in a population in a particular time period. Death rate decreases the population number.
Immigration is the number of individuals which enter a population.
Emigration is the number of individuals which migrate out of a population.
Therefore, the correct option is A.
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animals store most of their excess energy reserves as_____,and this is explained because______.
Answers
An ionic bond is formed as the result of a
Answers
Answer:
as a result of an atom, typically a metal, losing an electron, and becomes a positive ion or cation
Which of these is an example of a connection between Earth systems? Choose the correct answer.
ice melting on a lake
O deer drinking from a stream
O a robin hatching from an egg
O minerals forming under Earth's surface
Answers
Answer:
minerals forming underneath the earth's surface
Explanation: this is correct because I researched about it
The examples of connections between Earth systems are as follows:
Ice melting on a lake. Deer drinking from a stream.A robin hatching from an egg.Minerals form under Earth's surface.Thus, all the above options are correct.
What is the Earth system?The Earth system may be defined as all those processes that deal with physical, chemical, and biological interactions.
This system also consists of the land, oceans, atmosphere, and poles and includes the planet's natural cycles such as carbon, water, nitrogen, phosphorus, sulfur, and other cycles, and deep Earth processes.
The melting of ice on a lake is the physical transformation on the earth's surface. Deer drinking from a stream is the interaction of a living being with an abiotic factor.
A robin hatching from an egg is a biological process. While minerals forming under Earth's surface is a deep earth process.
Therefore, all the above options are correct for this question.
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carbon has three naturally occurring isotopes: carbon 12, carbon 13, carbon-14 which of these statement are true about carbon and its isotopes
Answers
i honestly do not know but my guess is they are different types of carbon used for different things
Explanation:
Which of the following is a central idea of cell theory? (5 points)
All living things are made of at least two cells.
O Cells cannot live alone as single organisms.
O All living things have five or more types of cells.
Cells are the basic unit of structure and function in living things.