Answer:
The correct answer is option b. "repressible gene expression".
Explanation:
The trp operon is a classic example of a repressible gene expression. The trp operon controls the biosynthesis of tryptophan from an initial precursor by encoding five genes that translate to three enzymes. These enzymes act as regulators and tryptophan itself acts as the final regulator. Tryptophan inhibits its own production when it binds to the transcription regulator, therefore it is an example of a repressible gene expression.
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
a. a lipid molecule
b. an indicator
c. an ADP molecule
d. an enzyme
Answer:
D. .................................
What are two things that characterize the practice of science?
What type of reproduction involves one parent making identical copies of themselves?
A. Asexual
B. Sexual
C. Meiosis
D. Selective Breeding
Coca-Cola owns a massive fleet of delivery trucks that have contributed 3.7 million metric tons of greenhouse gases to the atmosphere so far. Coca-Cola
decided to change by investing in new trucks that use alternative energy to do their deliveries. Their goal is to reduce their carbon footprint by 25% by the year
2020. What's this an example of?
A. Corporate responsibility
B. Market-based approach
C. Government incentive
D. Tragedy of the Commons
Does anyone know all the answers?????
The difference between an exergonic and endergonic reaction is that and exergonic reaction results in a decrease in mass while and endergonic reaction results in an increase in mass.
Explanation:
A good was to remember the different reactions is the ex- means out and en- means in. Exergonic reactions release energy and endergonic reactions take energy in.
Which of the following statements is true?
Capillaries pass oxygen and waste between blood and cells.
Red blood cells fight disease.
People with type O blood can receive AB blood donations.
The left ventricle controls the heartbeat.
Answer: Capillaries pass oxygen and waste between blood and cells.
Explanation: Capillaries are very thin-walled tubes that connect the arteries to the veins. The walls of these tubes are only one cell thick. Capillaries are found everywhere in the body. These thin tubes allow the food, oxygen, and waste to move between the bloodstream and cells. Waste products pass into capillaries and are carried by the veins to be disposed of in other parts of the body. Capillaries are the only blood vessels thin enough for materials to pass back and forth between cells and blood.
Blood Capillaries pass oxygen and waste between blood and cells. Thus option A is correct.
What are the function of blood capillaries?Capillaries are small type of blood vessels where a single red blood cell can barely fit in them.
They involve in the connection of arteries and veins, facilitate the exchange of certain elements between blood and tissues.
They involve in exchange of oxygen, nutrients, and waste between blood and tissues by two major process called passive diffusion and pinocytosis.
In passive diffusion the movement of a substance from the region of higher concentration to the region of lower concentration occur.
In Pinocytosis, intake of small molecules by the cell of the body like fats and proteins.
The capillaries wall are composed up of endothelium which is a thin cell layer called and surrounded by another thin layer called a basement membrane.
Thus option A is correct.
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There are several ways to produce the amino acids that build a protein. What does this mean?
Answer: Some MRNA codons code for multiple amino acids. So they can produce amino acids many ways, that build a protein.
There are several ways to produce the amino acids that build a protein because the genetic code is DEGENERATE or REDUNDANT.
In a given messenger RNA (mRNA) sequence, the triplets of nucleotides or 'codons' indicate specific amino acids to be added during protein synthesis.
The genetic code is said to be 'degenerate' or 'redundant' because different codons may encode the same amino acid.
For example, both the AUC codon and AUA codon in mRNA specify isoleucine, so alterations (i.e., mutations) in the nucleotide sequence do not always alter the protein sequence.
In conclusion, there are several ways to produce the amino acids that build a protein because the genetic code is DEGENERATE or REDUNDANT.
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What makes up tissue?
A) a group of cells
B) a group of muscles
C) a group of organs
D) a group of organ systems
Answer:
A. A group of cells
Explanation:
Which of these is not a characteristic of all living things?
Answer:
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
Explanation:
hope this helps
You get brainly if u have right answer
Which correctly lists the three main ocean zones
Deep neritic surface
Intertidal deep surface
Neritic intertidal open ocean
Open ocean deep continental
They are the intertidal zone, neritic zone, and oceanic zone.
intertidal zone neritic zone and oceanic zone.
Explanation:
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Carbohydrate, Protein, and Fat Digestive Enzymes A key objective in this chapter is to identify the major enzymes in the digestion of carbohydrates, proteins, and fats as well as the organs that secrete them. This activity requires you to match the enzyme with the secreting organ. Drag the names of the enzymes to their respective bins, representing the appropriate secreting organ. Some organs secrete more than one enzyme. 1. pancreatic amylase2. pepsin3. salvary amylase4. gastnc lipase 5. pancreatic lipase6. trypsin 7. chymotrypsin8. carboxypeptidaseA. Salivary Glands B. Stomach C. Pancreas D. Small Intestine
Answer:
its C
Explanation:
The following enzymes are secreted by the organs listed below:
Salivary glands: salivary amylaseStomach: pepsinPancreas: pancreatic amylase, pancreatic lipase, trypsin, chymotrypsin, carboxypeptidaseSmall intestine: pancreatic lipase, trypsin, chymotrypsin, carboxypeptidaseSalivary amylase enzyme is secreted by the salivary glands and breaks down starch into maltose. Pepsin enzyme is secreted by the stomach and breaks down proteins into smaller polypeptides. Pancreatic amylase enzyme is secreted by the pancreas and breaks down starch into maltose. Gastric lipase enzyme is secreted by the stomach and breaks down fats into fatty acids and glycerol.
Pancreatic lipase enzyme is secreted by the pancreas and breaks down fats into fatty acids and glycerol. Trypsin enzyme is secreted by the pancreas and breaks down polypeptides into smaller polypeptides. Chymotrypsin enzyme is secreted by the pancreas and breaks down polypeptides into smaller polypeptides. Carboxypeptidase enzyme is secreted by the pancreas and breaks down polypeptides into amino acids.
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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)
How is cell differentiation different than mitosis?
Cell differentiation does not cause proliferation.
Cell differentiation produces cells with different gene expressions.
Cell differentiation only occurs after a wound.
Cell differentiation produces cells with different DNA.
Answer:
it should be produces cells with different gene expressions
The process of cell differentiation is different than mitosis by the mechanism that cell differentiation produces cells with different gene expressions. Thus, the correct option for this question is B.
What is Mitosis?Mitosis may be defined as a type of cell division that produces two genetically identical daughter cells from a parental cell. It generally synthesizes diploid daughter cells. This process of mitosis occurs in the eukaryotic cells.
The generation of specialized cell types is called cell differentiation. It is the process during which a cell ceases to divide and develops specialized structural elements and distinct functional properties due to different gene expressions.
After the termination of cell differentiation, cells are structurally and functionally specialized with respect to their functions.
Therefore, the process of cell differentiation produces cells with different gene expressions. Thus, the correct option for this question is B.
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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
Which part of an atom is responsible for absorbing energy and releasing it as colored light?
Answer:
The electron
Explanation:
The electron is responsible because it absorbs incoming energy by switching it's orbiting level one step higher and when releasing the given energy it jumps back to it's original orbiting level and emits visible light!
Answer: photons
Explanation: When an electron jumps from the second energy level to the first, it gives off energy by releasing light. The atom aborbes or emits the light in photons. Each photon has definite energy.
warning: i could be wrong so I'm sorry if i am incorrect.
What kind of energy is glucose converted to during cellular respiration?
what is the relationship between kinetic energy and speed
Answer:
The energy transferred is known as kinetic energy, and it depends on the mass and speed achieved.
This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed.
KE = 0.5 • m • v2
where m = mass of object
v = speed of object
That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four. For a threefold increase in speed, the kinetic energy will increase by a factor of nine.
The kinetic energy of an object is a function of its speed.
More specifically, the kinetic energy of an object is directly proportional to the square of the speed of the object.
Mathematically, the relationship between the 2 quantities can be represented such that:
Kinetic Energy = 1/2 x mass x velocity^2
Velocity refers to the speed in a particular direction.
Thus, for a 2 fold increase in speed, the kinetic energy of an object increases in 4 folds.
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What is found in a eukaryotic cell but not in a prokaryotic cell?
Answer:
Hey!
Your answer is a NUCLEUS
Explanation:
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. You could also say that they also lack MITOCHONDRIA, CHLOROPLASTS and VACUOLES (these are other possible options!)
I HOPE THIS HELPED YOU!Things eukaryotes have and prokaryotes don't are:-
A true nucleus.Membrane bound organelles.What are prokaryotes ?
Prokaryotes are organisms whose cells lack a nucleus and other organelles.
Prokaryotes are divided into two distinct groups:
The bacteria and the Archaea, which scientists believe have unique evolutionary lineages. Most prokaryotes are small, single-celled organisms that have a relatively simple structure.To know more about eukaryotes here
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Your airways are coated with a thin layer of liquid called ASL and a mucus gel layer, both which neutralize foreign particles to prevent infection. In people with
Cystic Fibrosis, a gene has an error, which causes the cells of the airways (lungs, etc) to have defective plasma membranes The ASL and mucus are much
thicker than usual near the defective cells, causing a lot of lung congestion because the defective cells allow too much salt into the cells Why would allowing too much salt into the cells create thicker ASL and mucus?
À. The increased salt in the cells makes the person thirsty, leading to thickened ASL and mucus in the lungs
B. The increased salt in the cells causes water from the airways to move into the cells by osmosis, thickening the ASL and mucus in the lungs.
C. The increased salt in the cells causes water from the cells to move into the airways, thickening the ASL and mucus in the lungs
D. The increased salt in the cells is absorbed by the cytoplasm of the cell causing water to leave the cells and enter the lungs,
Answer:
d
Explanation:
Are seasonal responses in plants triggered by temperature or by length of daylight
Answer:
Plants don't have sensation of time, at least that we know till now. However plants have different stimuli against the different environmental change i.e lack of water causing yellow and fall of leaves. Such seasonal responses are reaction to environmental changes rather than timeline.
PLEASE help
If anyone know which it is please tell
thank you
Answer:
Explanation:
Because there not like humans they don't move very much they still need water and sunlight though make sure they get sunlight daily and water weekly - for number9 !! hope its right
Answer:
6) Plants create photosynthesis to get energy, animals eat waste and other organisms.
7) Yes, the body does get all the energy from the sun. When we eat animals that eat plants, the energy from CR goes to the consumers.
8) No, CR is the result of photosynthesis, if no CR were around, photosynthesis could not begin.
9) Plants needs energy to help move things in and out of the cell. Plants also need energy to grow and reproduce.
Which scenarios is the best example of positive feedback?
Explanation:
As Body temperature decreases, your body begins to shiver and you begin to sweat.
please follow mewho was the 20th. president. think for your help...
Answer:
James A. Garfield
Explanation:
Short and Good To Know Facts
Married Lucretia Garfield
Died by assassination after 6 months of being in office
Vice president was Chester A. Arthur
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.
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.
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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)
Answer:
C. Rubidium
Explanation:
Rubidium has 37 protons
Answer: Rubidium (Rb)
Explanation: just did it and got it right
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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If you want to learn more, you can read:
How many time can you revive?
Answer:
0
we are not cats
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.
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