The lac operon is known to be able to undergoes negative and positive control.
The diagram based on the 4 table arrangement is filled up below (Right to left);
In the presence of arabinose: initiator, activator, yes, yes.In the absence of arabinose: initiator and operator, repressor, no, no.
If a mutation prevents arabinose from biding to AraC: initiator and operator, repressor, no, no.
If arabinose is present but a mutation and AraD enzyme renders it non-functional: initiator, activator, yes, no.
The metabolism of the sugar arabinose is known to be influenced by an operon that is said to undergo both positive control and negative control.
Transcription of the ara operon is lead by the regulatory protein AraC, which then bound to the DNA.
When arabinose is present, it binds to AraC, and both parts of the AraC dimer are then also bound to the initiator, making transcription to move foreword.
When arabinose is absent, one part of the AraC dimer is often bounded to the initiator, while the other part is bounded to the operator, thereby hindering transcription.
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Now you'll examine an operon that undergoes negative and positive control. The ara operon in E. coli codes for enzymes that metabolize the sugar arabinose, which E. coli can use for energy. As you can see in the diagram, the regulatory protein AraC can act as both an activator and a repressor of the ara operon.
Use the diagram above to fill in the table.
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how is the scientific method used in earth science (it was due yesterday)
Answer: The steps used in scientific methods are to ask a question, form a hypothesis, test the hypothesis, analyze the results, draw conclusions, and communicate results. A controlled experiment tests only one factor at a time so that scientists can determine the effects of changes to just that one factor.
Answer:
The scientific method is the gold standard for exploring our natural world. You might have learned about it in school, but here’s a quick reminder: It’s the process that scientists use to understand everything from animal behavior to the forces that shape our planet—including climate change.
A piano player uses her hands for brief quick movements. Which muscle fiber type would you therefore predict to be predominant in these muscles
For brief quick movements, which muscle fiber type would you therefore predict to be predominant in these muscles...Fast twitch muscle fiber type.
There are three types of muscle tissue. 1. Cardiac 2. Smooth 3. skeletal muscles. The skeletal muscle are involved in voluntary movements of the body.
Since the player uses her hand in a voluntary way of movement, therefore she makes use of her skeletal muscles.
With regards to the skeletal muscles, there are two types with regards to speed, we have the slow twitch and the fast-twitch.
The fast-twitch muscle fiber aids in fast movement of the body but for shorter periods compared to the slow twitch.
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Find density if mass equal 400lb volume 20
Answer:
just use the formula d=m/v and plug in the numbers to solve the equation
Explanation:
in translation, the dehydration synthesis reaction is catalyzed by which enzyme?
Answer:
hydrolysis
Explanation:
hydrolysis is the reverse of dehydration because it breaks a covenant bond by adding a water molecule
hope this was helpful ☆☆
In translation, the dehydration synthesis reaction is catalyzed by DNA polymerase enzyme. Therefore, the correct option is B.
What is DNA polymerase?DNA polymerases are a group of enzymes that are responsible for catalyzing the synthesis of DNA. Their main function is to replicate the DNA. These enzymes work in pairs and a responsible for replicating two strands of DNA in a tandem. DNA polymerases α and δ are primarily responsible for nuclear DNA replication. There are at least 15 DNA polymerases known to exist in humans.
Translation is the process by which the genetic code carried by mRNA is decoded to produce a specific sequence of amino acids that will form a protein. This process involves the ribosome, which is responsible for assembling the protein chain by joining amino acids in a specific order dictated by the mRNA sequence. Therefore, the correct option is B.
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The question is incomplete, but most probably the complete question is,
In translation, the dehydration synthesis reaction is catalyzed by which enzyme?
A. Ribosome
B. DNA polymerase
C. Peptide
D. RNA polymerase
E. Ligase
F. Topoisomerase
NEED URGENT HELP!
A. What are three things that can create microclimates?
B. What characteristics of these things help create a microclimate?
Topography (height), large bodies of water and urban areas can create microclimates
in a hot place, if theres a mountain there, the top of the mountain can be cold
cement in an urban area can absorb a lot of heat during the day and then release it at night
valleys can have cold air
3. How are the long DNA molecules found in eukaryotes packed into short chromosomes?
Explanation:
DNA is tightly wound around histones,forming nucleosomes. Nucleosomes are tightly coiled and supercoiled to form chromosomes.
how much blood is filtered by the kidneys each day?
Answer:
Many times a day, your blood circulates through your kidneys.
Explanation:
Approximately 170 liters per day and 7 liters per hour. About 150 quarts of blood are filtered by your kidneys in a single day relavent to 44 gallons. The tubules are responsible for returning water and other substances to your blood following their filtering through your glomeruli. Approximately one or two quarts of the water becomes urine.
12. What biological organisms are in topsoil?
decaying and living plant and animal life
fossil remains from millions of years ago
nutrients from basic building material
Kard soil, clay, and large rocks
Answer:
Many of the millions of organisms that live in the soil, including bacteria, fungi, insects, and earthworms, are known as decomposers. They live on the remains of dead plants and animals and break down these organic remains into simple chemicals that are released into the soil.
Explanation:
two impacts of climate change on agriculture.
Answer:
OKAY FIRST IMPACT:
Crops either get to much sunlight during droughts or to much water during floods
SECOND IMPACT:
Crops may not have the right amount of nutrients or vitamins because of heat produced by the sun every day
BRAINLIST ???
what insects don't have piercing and sucking mouth parts?
.
Answer:
lice
Explanation:
they bite and chew on their host skin
What type or piece of material culture do you think gives the most information about your society? Why?
Help meeeeeeeeeeeeee
Answer:
1)sunlight and co2
2)oxygen and ?
Explanation:
Explain why diseases result in symtoms
Select the correct pair of classes that are categorized under superclass Pisces.
a) Cyclostomata and Osteichthyes
b) Osteichthyes and Chondrichthyes
c) Agnatha and Gnathostomata
d) Cyclostomata and Chondrichthyes
Answer:
d
Explanation:
because it is the answer
Which of the following is (are) part of a systemic immune response?
I. A fever
II. An increase in white blood cells in the body
III. An inflammatory response
I only
II only
III only
I and II only
I, II, and III
Answer:
l, ll, and lll.
Explanation:
what part of the autonomic nervous system is represented in the given image?
gene expression is determined by several factors, including
Hi! Thanks for asking your question here on Brainly!
Answer:
Chemicals in the body of a living organism is one of the many factors determined in gene expression.
Explanation:
The presence of drugs and/or chemicals in a living organism's environment, this can also influence gene expression in the organism.
Hope this helps :D Happy Holidays!
Expressivity can be impacted by a number of elements, such as genetic make-up, exposure to dangerous chemical substances, other environmental effects, and age.
What are the factors that affect gene expression?The level of transcription is where the majority of control over gene expression is exerted, and this is mostly due to the fact that proteins bind to certain locations on DNA.
It is possible for environmental elements such as nutrition, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens to have an effect on which of an animal's genes are expressed, which in turn has an effect on the animal's phenotype.
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throughout the ___________, a healthy dietary pattern can help minimize diet-related chronic disease risk.
Answer:
pregancy
Explanation:
Throughout the life, a healthy dietary pattern can help minimize diet-related chronic disease risk.
What are chronic diseases?Chronic diseases are those who required long term treatments.
Examples are cancer, heart diseases, diabetes, or any disability.
These diseases need treatments in phases or sometimes the treatment is lifetime.
To avoid chronic diseases, we should follow a healthy lifestyle.
Thus, the fill in the blank is life.
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Explain why bacteria and archaea are prokaryotic cells and all other organisms are eukaryotic cells
Answer:
Archaea and bacterial cells lack organelles or other internal membrane-bound structures. Therefore, unlike eukaryotes, archaea and bacteria do not have a nucleus separating their genetic material from the rest of the cell.
Explanation:
A goniometer measures __________. A. A joint's maximum range of motion B. A joint's minimum range of motion C. A joint's flexion D. Extension and hyperextension Please select the best answer from the choices provided. A B C D.
A goniometer measures __________..
Answer : A
Explanation : A joint's maximum range of motion
Hope this helps you!
Answer:
A. a joint's maximum range of motion
Explanation:
A goniometer is a device that is used to measure the maximum arc of motion made by a joint. The traditional goniometer consists of a protractor and two extending arms ,one of the arms is movable while the other one is stationary.To take measurements the center of the goniometer is aligned with the center of a joint. Then the arm of the goniometer is moved until it aligns with the limb that has been moved to a maximum position that the joint allows. The angle made between the two arms of the goniometer is measured in degrees and is the maximum range of motion of the joint.
When Emma first began dancing, her movements were ______ and awkward. Now, after several months of practice, Emma is able to produce fluid, smooth movements as a result of which of the following?
*all of the above is correct
Answer:
All of the above is the correct answer
Explanation:
how soon can a blood test detect pregnancy after conception
Answer:
5 weeks
Explanation:
I think so.
Pls mark as brainliest answer if it helps you
please help me.what are the insects with out siphoning mouth parts.? please help.
1. How does Air move in Earth's Atmosphere?
Answer:
Air in the atmosphere moves around the world in a pattern called global atmospheric circulation. ... When the air cools, it drops back to the ground, flows back towards the Equator, and warm again. The, now, warmed air rises again, and the pattern repeats. This pattern, known as convection, happens on a global scale.
The process of making sugars in the chloroplast is called??
Answer:
Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. ... The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.
how many chromosomes are in a typical human body cell?
Answer:
46 chromosomes
Explanation:
There are 46 chromosomes in a typical human body cell. (23 pairs of chromosomes)
how many chromosomes are in a typical human body cell?
Answer:-46 chromosomes
Explanation:-The normal number of chromosomes in every cell of a typical human body is a total of 46 chromosomes, or 23 pairs.
QUESTION 7
All of the following cells might be a product of meiosis EXCEPT?
OA) an egg
O B) a liver cell
OC) a spore
OD) a sperm cell
E) a gamete
Answer:
B) Liver Cell
Explanation:
An egg and a sperm cell are reproductive cells that are products of meiosis
A spore is produced by meiosis in the sporophyte
A gamete is produced through meiosis
What is a chemical reaction from your teeth
Explanation: Calcium phosphate and hydrogen ions undergo a reversible reaction with calcium ions, phosphoric acid and water. The products of the reaction are calcium ions, phosphoric acid and water. All of these exist in chemical equilibrium with the crystalline calcium phosphate.
Answer:
calcium ions, phosphoric acid and water
Explanation:
Calcium phosphate and hydrogen ions undergo a reversible reaction with calcium ions, phosphoric acid and water
how do you collect maple leaves in animal crossing
Answer:
Explanation:
Similarly to how Cherry Blossom Petals work during the Spring, you can get Maple Leaves by searching for a large orange leaf falling from the sky on your island during this limited period in the Autumn. It's random when and where these leaves will fall on your island, so always be on the look out for one to appear!
A filamentous decomposer with cellulose cell walls could be a(n) __________. View Available Hint(s) for Part A algae water mold fungus helminth
Answer:c
Explanation:
A filamentous decomposer with cellulose cell walls could be a water mold.
Where is amoebae found?Amoebae are found worldwide and are very common in soil, fresh water, and other habitats.
Do fungi have cell walls?
Fungal cells also contain mitochondria and a complex system of internal membranes, including the endoplasmic reticulum and Golgi apparatus.
Hence , B is correct option
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