PLS HELP
According to the model represented in the diagram, which of the following would cause the cell to not express the lacZ, lacY, and lacA sequences?
A. Binding the RNA polymerase to the gene
B. Removing the Inducer
C. Preventing the repressor from binding to the lac operon
Answers
Answer:
the answer would be a
Explanation:
When the inducer is removed from the lac operon model, then this will result in hindering the expression of lacZ, lacY, and lacA sequence in the cell. Thus, the correct option is B.
What is lac operon?Lac operon is a model which contains genes that are involved in metabolism of the cell. The genes are expressed only when the lactose is present in the medium and glucose is absent. The lac operon is turned on and off in response to the glucose and lactose levels in the medium: catabolite activator protein (CAP) and lac repressor. The lac repressor is responsible for blocking the transcription of the operon.
The lac operon can be switched off i.e., the expression of genes can be stopped by removing the inducer molecule from the medium.
Therefore, the correct option is B.
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Related Questions
What is an observation of matter that is measured without changing the identity of the substance.
a. A physical Property
b. A chemical property
c. A physical change
d. A chemical change
Answers
Answer:
C.
A physical Change
Describe the three things that make an animal extinct.
Answers
Answer:
- It could be due to changes in climate. (Ex; ice age)
- Competition from other neighboring species.
- Invasive species taking over their habitat.
- Reduced food supplies.
- Sometimes, even a combination of everything above.
Explanation:
Explanation:
poaching, destruction of habitats, and climate change
this is the name for water outside of cells and makes up 1/3 of body fluid.
Answers
Answer:
Extracellular
Explanation:
Based upon the cladogram below, which of the following traits was derived at point C?
A. Legs
B. Mouth parts
C. Segmented body
D. Six Legs
Answers
D. Six Legs
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Explain why sometimes roots act as a source rather than a sink.
Answers
Answer:
Explanation:roots suck up nutrients
Roots can sometimes act as a source rather than a sink for glucose during unfavorable periods of growth.
What are sources/sinks?Sources are organs of plants where glucose is manufactured and sinks are organs of plants where glucose is stored.
Usually, the synthesis of glucose happens in leaves while some roots serve as storage organs for glucose.
When conditions are bad for glucose synthesis in leaves, storage roots sometimes become sources and send glucose to leaves for respiration.
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Prevention measures are difficult to determine for which nervous system issue?
Answers
Answer:
All of the above. is correct
Explanation:
Can someone help me fine the percentage and draw punnet square please i will give brainiest
Answers
Answer:
1. Tall - 100%
Short - 0%
2. Tall - 50%
Short - 50%
Please help
Sediments turn into solid rock through two different but related
processes. These processes are called compaction and chemical
weathering.*
O True
O False
Answers
Someone plz help me :(
Answers
Answer:
a. tissue
Explanation:
Which of the following is a function of the cerebellum?
Answers
Answer:
All of the above
Explanation:
Which of the following mutations would be most likely to have a harmful effect on an organism? (1 point)
Othere is not enough information to know whether a mutation would be harmful
O all mutations have a harmful effect on organisms
O a substitution of a thymine for an adenine
o a deletion of 3 bases near the center of a gene
Answers
Answer:
all mutations have a harmful effect on organisms
Explanation:
susie explains to her peer, "dominant traits disappear in the offspring of a hybridization while recessive traits will be inherited unchanged in hybridization." is susie correct?
Answers
Answer:
Not Correct
Explanation:
Dominant traits are those that are in herited unchanged in a hybridization, and Recessive traits become latent, or disappear in the offspring of a hybridization.
In which direction are nearly all galaxies moving relative to Earth?
Answers
Edwin Hubble discovered that most of the galaxies are moving away from us and away from each other. Hubble also discovered that there is a relationship between the distance to a galaxy and its speed. Hubble's law states that the farther away a galaxy is, the faster it is moving away from us.
easy question OK what is the power house of the cell :>>
Answers
Answer:
Mitochondria
Explanation:
Mitochondria is often called the powerhouse or energy factory of a cell as it produces energy(ATP) for the cell
list 2 facts about electromagnetic energy
Answers
Radio waves.
Microwaves.
Infrared radiation.
Visible light - all colors of the spectrum that we can see.
Ultraviolet light.
X-rays.
Gamma radiation.
What gene on plasmid act as a marker to select for the recombinant DNA
Answers
Genes that are preferably used in the plasmid need to be resistant from various antibiotic effects. The genes that are preferably used as selectable markers ( antibiotic resistant ) to select r DNA are: nptII, hpt, bar and gox.
What are markers ?Markers in the r DNA are actually the genes that are purposed to check if the nucleic acid sequence has been inherited in the host DNA or not.
Genes that are used in the markers need to be antibiotic resistant as it becomes easier to detect the plasmid containing bacteria when they are grown in the selectable culture media.
Thus nptII being resistant to amino glycoside antibiotics,gox to the glycophosphate and hpt gene to detect trans gene and bar in the self defense are selected most probably.
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Cells regulate both protein synthesis and protein activity. Discuss TWO specific mechanisms of protein regulation in eukaryotic cells.
Answers
Answer:
In 4 or more complete sentences, describe the process of protein synthesis and explain how transcription and translation creates protein."Alternative splicing or DNA packaging"
Explanation:
yw love :)
The two specific mechanisms of protein regulation in eukaryotic cells is DNA packaging and protein degradation.
TWO specific mechanisms of protein:DNA packaging: It loose or tight the chromatin that promoted or inhibited the transcription. Degradation of the protein: Proteases split down the proteins.Hence, The two specific mechanisms of protein regulation in eukaryotic cells is DNA packaging and protein degradation.
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the product of the light reactions of photosynthesis that gets used during
the Calvin cycle is
Answers
I don't know it can some one help me please
Plants have cells, tissues, organs, and systems that allow them to function as complete organisms. Which parts of a plant function as an organ?
A: root hairs
B: chlorophyll molecules
C: spores
D: leaves
Answers
Answer:
Leaves
Explanation:
Root hair=cell chlorophyll=molecues, spore=cell
How many genes do humans approximately have?
To make person, you need a cell from your mom called an and a cell from your dad called a
Around how many cells do you need to make a person
What determines the types of earlobes you have?
In how many ways can human genes combine in different ways?
What are the four chemicals that make up DNA?
What do you get if you combine a female horse with a male donkey?
Chromosomes are paired but genes are not (True/False)
. Does or doesn't mutation of genes help animals to survive in nature?
Answers
i is a perfect cube 2,3,8,14,15 for
The process by which the surface of a microorganism is covered with antibodies and complement, rendering it more likely to be phagocytized, is called
Answers
Answer:
Ya antes del fin del siglo XIX Ehrlich había usado el término "complemento" para designar la actividad del suero que podía complementar la capacidad de los anticuerpos específicos de lisar bacterias. Pero es Jules Bordet quien descubre (1895) este componente, caracterizado frente a los anticuerpos por su termolabilidad. En 1907 Ferrata comienza a caracterizar algunos de sus componentes recurriendo a métodos de diálisis. Por motivos meramente cronológicos, los componentes iban recibiendo denominaciones a base de números tras la letra "C" conforme se iban descubriendo. Por esta razón, su orden de actuación no guarda en general relación con su nomenclatura.
Explanation:
When heat-absorbing gases increase in the atmosphere, it leads to a phenomenon known as
energized climate change
enhanced greenhouse effect
negative global warming
positive feedback loop
Answers
Answer:
Enhanced Greenhouse effect
Explanation:
I took the test and got it right
After staring at a green and yellow object for approximately one minute, students were asked to turn to look at a
white wall. Within seconds, they were shocked to see the image of the object in red and blue. Which theory of color
vision helps explain what the students saw?
Answers
Opponent process theory of color vision explains why they saw the image in different colors.
Opponent process theory of color vision is defined as the way the human
visual system processes information about color in an opposite manner. The
color viewed are usually complementary to each other.
The opponent process cells are located in the thalamus and in the example
given, green and yellow were first seen before the complementary color
which are red and blue were seen after a while.
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All of a person's genes comprise the person's ______ and how these genes are expressed in the person's appearance or characteristics is the person's ______
Answers
Answer:
genotype, phenotype
Explanation:
what happens one and non-competitive inhibitor binds to an enzyme
Answers
Answer:
The competitive inhibitor binds to the active site and prevents the substrate from binding there.
Explanation:
The noncompetitive inhibitor binds to a different site on the enzyme; it doesn't block substrate binding, but it causes other changes in the enzyme so that it can no longer catalyze the reaction efficiently.
1. Urban sprawl can lead to a chain reaction of problems as the human population of a regions increases. Which of the following is a common problem of urbanization?
New roads into suburban areas can lead to less air pollution and traffic.
There are too many schools, and existing schools will longer be needed.
Most homes are built with poor materials or in dirty or unsafe living conditions.
Electricity lines serve the central city but may not go beyond the edges of the city
2. Which of the following is an impact of deforestation?
Decreased wildfires
Decreased pollution
Habitat fragmentation
More even-aged forests
Answers
Answer:
c for question 1
why the cheaper the better says the contractor
Explanation:
c for question 2
why animals have nowhere to go and live (have babies) so they just die
give brainlyist and tell me if im correct or wrong
The statement which represents a common problem of urbanization is that most homes are built with poor materials or in dirty or unsafe living conditions. Thus, the correct option for this question is C.
What is deforestation?Deforestation may be defined as the process of elimination of trees and forests for the purpose of urbanization and industrialization along with various human activities. It is the purposeful clearing of forested land.
The great impact of deforestation is that it decreased wildfires. When the number of trees gradually declines, the chances of forest fires and wildfires may also reduce with respect to time. But there is an ultimate increase in pollution that may be observed along with habitat defragmentation.
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a fern lives alongside a river
Answers
Answer:
[tex] the \: ferns \: habitat.[/tex]
Explanation:
The area where the ferns lives is called as fern's habitat
a
2. True or false: Behaviors must be either learned or instinctive.
True
False
g
Answers
Depends on the situation.
Answer:
False
Explanation:
False. When learned they develop as a result of training or changes in experience. When instinctive the behavior is inherited from their parents.
a.
6) Identify all of the outputs of photosynthesis
Glucose
b. Water and Glucose
Glucose and Oxygen
d. Oxygen and Carbon Dioxide
C.
Answers
Answer:
glucose + oxygen+ water
Which of the following correctly describes hypertrophy?
Answers
Answer:
c. The muscle fibers increase in size.
Explanation: is correct/ post protected
Answer:
Hey man! The answer to this question is C The muscle fibers increase in size. Hope you have an amazing day!
