A metabolic pathway in a bacterium is under the control of an activator protein. This protein is made constitutively and activates transcription by binding to an activator binding site on the DNA, which allows RNA polymerase to bind to the promoter. The sketch below shows the arrangement of genes in the operon for this metabolic pathway. which of the statements below describes the cellular events most likely taking place when the cell needs to shut down this pathway
Answers
Answer:
c
Explanation:
Just took the test
A product of the reaction catalyzed by enzyme 3 binds to the activator protein, which inhibits its binding at the activator site. Therefore, option (C) is correct.
What is feedback inhibition?Feedback inhibition is a type of regulatory mechanism that occurs when the product of a reaction catalyzed by an enzyme inhibits the activity of that enzyme. This can be achieved through various mechanisms, such as by binding to the enzyme and preventing it from interacting with its substrate, or by modifying the enzyme in a way that changes its activity.
Feedback inhibition is a common mechanism used by cells to regulate pathways and ensure that they are operating at the appropriate level. For example, if a cell produces too much of a particular enzyme's product, that product may bind to the enzyme and inhibit its activity, thereby reducing the overall rate of the pathway. This helps to prevent the buildup of unnecessary intermediates or end products, and it can also help to conserve energy and resources.
Learn more about feedback inhibition, here:
https://brainly.com/question/17453087
#SPJ2
Related Questions
Chromatids are artached to each other at the
Answers
Hope that helps! :)
what are the major types of DNA called
Answers
Answer:
Autosomal DNA and mitochondrial DNA
Explanation:
There are two types of DNA in the cell – autosomal DNA and mitochondrial DNA. Autosomal DNA is packaged into 22 paired chromosomes.
In each pair of autosomes, one was inherited from the mother, and one was inherited from the father. Autosomal DNA is passed down from both the mother and the father and provides clues to a person’s ancestry.
Hope this helps!
Brain-List?
pls answer asap!
which of the following is not an example of mechanical weathering?
A. rocks being broken apart from freezing water
B. rocks being apart by plant roots
C. abrasion caused by wind blowing sand against rocks
D. dissolving of lime stone rock by ground water
Answers
Answer:
D
Explanation:
Because,
Mechanical weathering is the breaking down of rocks into smaller pieces without changing the composition of the minerals in the rock. This can be divided into four basic types – abrasion, pressure release, thermal expansion and contraction, and crystal growth.
The dissolving of limestone rock by groundwater is not an example of physical weathering.
Another name for mechanical weathering is called physical weathering. Some factors that aid or help in the mechanical weathering of rocks are:Wind, the thawing of frozen water found in rocks, e.t.c
Therefore, the dissolving of limestone rock by groundwater is not an example of physical weathering.
The correct option is option D
To learn more, visit the link below:
https://brainly.com/question/18233412
What two locations on a neuron membrane can we find synapses?
Answers
Answer:
ONLY IN CONNECTED NERVE CELLS
Explanation:
THE spot of close connection between axon and dendrite is the synapse. A single axon can have multiple branches, allowing it to make synapses on various postsynaptic cells.In the central nervous system, a synapse is a small gap at the end of a neuron that allows a signal to pass from one neuron to the next. Synapses are found where nerve cells connect with other nerve cells. Synapses are key to the brain's function, especially when it comes to memory.
The plasma membrane is composed of both lipids and proteins. The relative concentration of each in the plasma membrane is partly regulated by the
Answers
Answer:
Golgi complex
Explanation:
The Golgi complex, also known as the Golgi apparatus, is a cell organelle of eukaryotic cells that functions to sort different molecules which are destined to the plasma membrane. In the Golgi apparatus, proteins and lipids from the Endoplasmic Reticulum (ER) are subsequently processed and classified to be transported to different cell locations including, among others, the plasma membrane, or vesicles which are secreted from cells by exocytosis. Moreover, this organelle also contains specific enzymes (glycosylation enzymes) that function to modify proteins in order to form glycoproteins.
The cholesterol synthesized by the cells used which component of the glycolytic pathway as a starting point
Answers
Answer:
This question lacks options, options are: A. glucose B. acetyl CoA C. pyruvate D. carbon dioxide. The correct answer is B.
Explanation:
Acetyl-CoA, the substrate for cholesterol synthesis is produced by the catabolism of carbohydrates, fatty acids and certain amino acids. Cholesterol comes from both diet and de novo synthesis from acetyl-CoA, biosynthesis that takes place preferentially in the liver; and to a lesser extent, in the intestine.Acetyl-CoA is converted to mevalonate, mevalonate is converted to squalene through successive reactions of transfer of prenyl groups. Squalene becomes lanosterol. Lanosterol is converted to cholesterol after 21 other successive, enzymatically catalyzed reactions.
Is a crystal alive? Why or why not?
Answers
Answer:
A crystal is an inorganic (not alive, not from something alive) homogeneous solid (meaning a solid with the same properties at all points) with a three-dimensional, repeated ordering of atoms or molecules. ... Crystals grow in one of three primary ways: from a vapor, from a solution or from a melt.
can someone please help me giving brainliest
Answers
Answer:
B. Getting energy from sunshine.
Explanation:
having sunshine is very important because it is good for you and your body.
one time I was sick and I stayed inside all the time and my parents made me go outside because of fresh air and the sun, and I felt better the next day, I could actually get up and do something.
2. In what part of the beet pant is the excess sucrose stored? A. root B. leaves C. stem
Answers
Insects are a major danger to crop plants. Every year, insect damage destroys many plants that could be used to produce food. Genetic engineering can be used to insert a gene into crop plants that helps them resist insects. What is one potential risk of this use of biotechnology?
Answers
Answer:
1. Is it safe to consume a plant/crop that has been injected with genetic engineering?
Genetic engineering may have some risks as well such as production of genetically modified organisms interfere with the environment. The toxins produced by these organisms are found in other higher organisms.
What are the risks of genetic engineering?
Genetic engineering is also called as genetic modification. It is the modification of an organism's genes through the use of technology. It is a set of technologies which are used to change the genetic makeup of the cells, including the transfer of genes within and across the different species boundaries to produce new and improved or novel varieties of organisms. New DNA is obtained through either isolating and copying the genetic material of interest using recombinant DNA methods or through artificially synthesizing the DNA molecule.
Genetic engineering has some potential risks which include transfer of the selected gene into other species, this interferes with the nature, GM crops could be harmful for organisms, for example the toxins produced from these crops have been detected in the body of some organisms.
Learn more about Genetic engineering here:
https://brainly.com/question/13491558
#SPJ2
The p53 gene in mammalian cells is known to stop the cell cycle in response to damaged DNA. If this
gene is damaged without repair, which of the following is most likely to occur?
The cell will immediately undergo apoptosis.
The cell cycle will be disrupted in the defective cell.
Growth factors will allow the cell to divide normally.
Damaged DNA will remain unprepared and a tumor may form.
Answers
Answer:
i think its the first one
Please help me i don't understand
Answers
Suppose a cool, damp autumn causes the cricket population to greatly increase. What will most likely happen to the frog and snake populations?
Answers
Answer:
also increase
Explanation:
more food more animals can eat causing animals to come and also breed then the crickets will go back down causing the predators to go back down giving them a chance to go back up and the cycle continues.
PLEASE HELP FAST The tectonic plate on which Florida sits is fairly large. what is the name of this tectonic plate???
Answers
Answer:
Most earth tremors are associated with the margins of the Earth's tectonic plates and Florida is securely distant from any of these; the closest is the transform boundary between the North American and Caribbean plates, almost 800 miles to the south.
Explanation:
Answer: The North American Plate
Explanation:
A single atom of carbon is joined to a hydrogen atom. How many double bonds can the
carbon still form?
Answers
Answer:
One carbon atom forms four covalent bonds with four hydrogen atoms by sharing a pair of electrons between itself and each hydrogen (H) atom.
Explanation:
Which process allows cold ocean water rich in nutrients to rise to the surface?
Answers
Answer:
upwelling is the process allows cold ocean water rich in nutrients to rise to the surface
What are the two types is stem cells and what are their potential uses?
Answers
Answer:
The two primary Stem Cells are Pluripotent (Embyotic) and Somatic (Adult).
Explanation:
Pluripotent stem cells can turn into any type of cell in an adult body.
Somatic stem cells can only differentiate into specific cells in an organ or tissue.
Which of the following equations is balanced?
A. 2H2 + O2 ---> H2O
B. H2 + 2O2 ---> 2H2O
C. H2 + O2 ---> H2O
D. 2H2 + O2 ---> 2H2O
Answers
Hey yall you don't know me but can someone help ill do anything
Answers
Answer:
B ong
Explanation:
still required to do 20 characters but its B ong
What branch of science studies the structure of living things?
1) physiology
2) kinesiology
3) anatomy
4) phylogeny
Answers
Answer:
3. Anatomy.
Explanation:
Anatomy is a branch of science which studies the physical structure of humans, animals, and other living beings. Anatomy is a part of biological studies. This field in the science is focussed on the shape, structure, and the relationship relevant to the living organisms.
Anatomy is further divided into two branches, namely, microscopic anatomy and macroscopic anatomy.
Therefore, the correct answer is option 3.
If a woman is blood Type AB and her husband is blood Type O, what is the probability of blood types that their offspring would have
Answers
Explanation:
the probability of blood types that their offspring would have is
B. 2/4 - 50%
A 2/4 - 50%
Please answer correctly if i dont pass this question ill fail the test :(
Answers
a cricket population included approximately the same number of black and light-brown crickets.
Answers
Answer:
i think its A tell me if im wrong ;)
Explanation:
Which is an advantage that crops may attain through genetic engineering?
A.) modifying pests
B.) surviving droughts
C.) growing organically
D.) maturing longer
Answers
Answer:
A
Explanation:
because pests won't be able to eat the plants
Answer:
D. maturing
Explanation:
i think so
Name one area in the world affected by exfoliation.
Answers
Answer:
Exfoliation
Explanation:
Which best describes the law of independent assortment? A. Alleles of a trait separate independently when gametes form. B. The traits of an offspring are independent from the parents. C. Traits can only be controlled by a single gene. D. The F2 generation will be identical to the F1 generation. SUBMIT
Answers
Answer:
All of the genes controlling the traits were located on the same chromosome.D
Explanation:
A monohybrid cross is performed for one generation, whereas a dihybrid cross is ... A) The law of independent assortment requires describing two or more genes ... D) members of the F1 generation had only one allele for each trait, but ... C) All of the genes controlling the traits were located on the same chromosome.D
Answer:
A
Explanation:
Alleles of a trait separate independently when gametes form
Atmospheric transparency will increase when
1.
volcanic eruptions occur
2.
fog is produced
3.
insolation is reflected by clouds
4.
precipitation removes dust particles from the air
Answers
11. What property of waves would help measure the height of the waves in a
Tsunami?
a. Wavelength
b. Frequency
c. Wave speed
d. Amplitude
12. What inference can be made about the wavelength of a wave with a constant speed and a low frequency
a. The wavelength is short
b. The wavelength is long
c. Must be a mechanical wave
d. Must be a wave in the electromagnetic spectrum
13. The wave speed of an electromagnetic wave is constant when travelling through a medium. Which formula below is the correct one to use when calculating for wave speed
a. Wave speed = frequency x period
b. Wave speed = period x wavelength
c. wave speed = frequency x wavelength
d. Wave speed = crest x trough
Answers
Answer: amplitude would help measure height
low f, constant speed, long wavelength
speed = frequency x wavelength
Explanation: constant speed, low frequency
frequency = speed/wavelength; at constant speed f proportional to 1/wavelength, so low f __> long wavelength
speed = freq*wavelegth
During active transport, what is required to move material across the cell membrane? А energy B water С oxygen D cytoplasm
Answers
Answer:
c
Explanation:
they move by oxygen
Which of the following is a biotic factor that might limit a population of mice?
1.water for the mice to drink
2.rainy weather that floods the mice's nests
3.owls that prey on the mice
4.rocks in which the mice can hide from predators
Answers
Answer:
owls that prey on the mice
Explanation:
owls are the biotic or live factor that limits mice population because they hunt mice for food