Transformation is a process in which bacteria take up new DNA released by dead cells and integrate it into their own genomes (see Chapter 9). In Streptococcus pneumoniae (which causes many cases of pneumonia, inner-ear infections, and meningitis), the ability to carry out transformation requires from 105 to 124 genes, collectively termed the com regulon. The com regulon is activated in response to a protein called competence-stimulating peptide (CSP), which is produced by the bacteria and exported into the surrounding medium. When enough CSP accumulates, it attaches to a receptor on the bacterial cell membrane, which then activates a regulator protein that stimulates the transcription of genes within the com regulon and sets in motion a series of reactions that ultimately result in transformation. Does the com regulon in S. pneumoniae exhibit positive or negative control

Answers

Answer 1

Answer:

Positive (inducible)

Explanation:

Increased levels of CSP induce the receptor to stimulate transcriptional activator functions, which allow gene expression to occur similar to what happens in positive inducible.


Related Questions

no links please!
Two ecosystems are compared in terms of population size and species diversity. One ecosystem has a large number of individuals but low species diversity, while the other ecosystem has fewer individuals but greater species diversity due to high mutation rates. Which of the following statements best describes how these two ecosystems would respond to an environmental stress such as drought?

The ecosystem with greater diversity is less dependent upon resources and would suffer less from the drought.
The ecosystem with greater diversity is more stable and would, therefore, be more likely to withstand the drought.
The ecosystem with more individuals is less likely to suffer because it is more productive and, therefore, more stable.
The ecosystem with more individuals is more likely to have members that are drought-resistant and will survive and reproduce.

Answers

Answer: I had the same problem in one of my exams. I think the answer is "the ecosystems with greater diversity is more stable and would, therefore, be more likely to withstand the drought.

Explanation:

I chose this because it seems like the most logical explanation.

"The ecosystems with greater diversity is more stable and would, therefore, be more likely to withstand the drought. Thus, option B is correct.

What is biodiversity?

Biodiversity is considered as the variety of living things found in the various habitats, such as terrestrial, marine, and desert ones, as well as the ecological groups to which they belong.

The variety of the creatures present in an ecosystem, as well as their relative abundances, is referred to as biodiversity. It also depicts the various stages of organism organization.

In ecosystem there are thirteen different grass species present and in ecosystem Y 1 species of grass present, that is,  ecosystem X has a greater amount of biodiversity. So, during  the drought, the bison in ecosystem X are better able to survive.

Therefore, "The ecosystems with greater diversity is more stable and would, therefore, be more likely to withstand the drought. Thus, option B is correct.

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Soil erosion can increase when humans remove trees and other vegetation from an area. What

is this process called?

A. decomposition

B. conservation

Answers

I think the answer is B.conservation:)

Of the four points shown on the diagram, deposition is greatest at points

Answers

Answer: I would say B and C.

Explination: Deposition is material deposited in a new spot. On points B and C, it appears the residue from the water would end up on those river banks.

Please help me im stuck on this question!!! Please hurry !!

Answers

Answer:

one of the smallest stars

Explanation:

there are trillions of stars and most of them are millions of times the size of our sun

What nitrogen base pairs with Adenine?

Answers

Answer:

The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

Explanation:

Answer:

Thymine.

Explanation:

The best way to remember these nitrogen base pairings is by using a common acronym. Think Apple Tree and Car Garage. Apple represents Adenine and Tree represents Thymine. Car represents Cytosine, and Garage stands for Guanine. This memory trick can help remember the nitrogen base pairs.

The following is a growth curve of bacteria. What type of growth curve is pictured? A) linear growth B) logistic growth C) exponential growth​

Answers

Answer:

C) exponential growth​

In the given figure, exponential growth curve is pictured.

What is exponential growth?

It is the pattern of data, which demonstrates greater enhancements with passing time, giving rise to a curve of an exponential function. During the growth cycle of bacteria, the cells of bacteria goes through different phases, that is:

Lag phaseExponential phaseStationary phaseDeath phase

In the case of bacteria, the cells enter the log or the exponential phase after the lag phase. This is the time when the cells get differentiate by the process of binary fission and double in numbers after each generation time.

In this pattern of growth, the metabolic activity is high as RNA, DNA, the components of the cell wall, and other substances essential for growth are generated for differentiation.

Thus, the pattern of growth demonstrated in the given figure is exponential growth.

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What is the relationship between DNA mutations and the disorders? Disorders:Hemophila,Beta thalassemia, and Sickle Cell Disease

Answers

Answer:

disorders are caused by mutations of these genes

Explanation:

A student is looking for evidence that spindle fibers are separating
chromosomes during cell division. Which cell is the student looking for
below?*

Answers

I believe the correct answer choice is 2

Someone help me please thank you lol!

Answers

The answer is D.

hhhhhhhhhhhh

Which would a chemoautotroph use to produce energy?

Answers

Is there a photo????

Please help me if you know the answer please

Answers

It is sunny and hot outside
I believe that is the answer

In which of the following organisms did photosynthesis most likely first
evolve?
A. Algae
B. Prokaryotes
C. Plants
D. C4 plants

Answers

It’s B, since
Compared to prokaryotic organisms such as bacteria, plants and animals have a relatively recent evolutionary origin. DNA evidence suggests that the first eukaryotes evolved from prokaryotes, between 2500 and 1000 million years ago.

The following organisms did photosynthesis most likely first  evolve - B. Prokaryotes

Sufficient evidence indicates that eukaryotic photosynthesis originated from endosymbiosis of cyanobacterial-like organisms

ultimately these prokaryotes became chloroplasts in eukaryotic cells.So the evolutionary origin of photosynthesis is to be found in the bacterial domain.The geological record indicates that this transforming event took place early in Earth's history, at least 2450–2320 million years ago

Thus, The following organisms did photosynthesis most likely first  evolve - B. Prokaryotes

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amino acid is to protein as _____ is to dna

Answers

Amino acids are the building blocks of proteins. The analogous building blocks of DNA would be nucleotides (or, if you want to get really specific, deoxyribonucleotides).

What two diseases have been studied together that provide evidence of evolution in
humans?

A)malaria and ebola

B)sickle cell anemia and malaria

C)cytochrome c disease and plasmodium fever

D)iron-deficient anemia and yellow fever

Answers

Answer:

sickle cell anemia and malaria

Explanation:

Scientists believe the sickle cell gene appeared and disappeared in the population several times, but became permanently established after a particularly vicious form of malaria jumped from animals to humans in Asia, the Middle East, and Africa.

The two diseases have been studied together that provide evidence of evolution in humans is sickle cell anemia and malaria.

What is sickle cell mutation?

The sickle cell mutation is relevant to malaria because infection of a red blood cell with the malaria parasite leads to hypoxia. In individuals of the AS genotype such blood cells sickle and are then eliminated by macrophage cells of the body’s immune system, lessening the burden of infection (Luzzatto, 2012). Carriers of the sickle cell trait are particularly resistant to severe malarial episodes; they are less resistant to mild cases. The mechanism by which carriers are protected from malaria is different than the acquired immunity that both AA and AS individuals achieve following repeated exposure to the disease.

The benefit that possessing a single copy of the sickle cell gene conveys counterbalances the biological cost incurred when homozygous SS children are stricken with sickle cell disease. An individual of the AS genotype is more likely to reach adulthood than is an individual of the AA genotype, but the former is also more likely to see his/her child die of sickle cell disease. This is known as a heterozygote advantage or balanced polymorphism. As shown more formally below, the stronger is the pressure of malaria on survival, the more advantaged are individuals who carry the S gene, and in equilibrium, the higher the percentage of the population who will be carriers. Indeed, it was the correlation of high prevalence of the sickle cell gene and the presence of malaria that first led scientists to understand the protective role of the sickle cell mutation (Kwaitkowski, 2005). As will be seen in the next section, the underlying genetic mechanism by which the sickle cell trait is transmitted provides a means of mapping sickle cell prevalence into an estimate of the mortality burden of malaria.

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PLEASE HELP MEEEEE YOU WILL GET THE BRAINELIST

PLEASE WRITE A SUMMARY ABOUT THE LAW OF UNIVERSAL GRAVITATION

Answers

Answer:

When NASA sends rockets into space, they have to contend with a lot more than just astronaut training, fuel loads, and an overall mission objective. The astrophysicists who plan space travel must also contend with fundamental laws of physics. Chief among these is Sir Isaac Newton’s law of universal gravitation.

Explanation:



Various factors influences the fluidity of the phospholipid bilayer of the cell membrane. If we were to chart the composition of cell
membranes in organisms as we move north from the equator to higher latitudes around the Arctic circle, we would expect to find
phospholipids with
A)
fewer hydrophilic heads.
B)
fewer interspersed cholesterol molecules.
both saturated and unsaturated fatty acid tails.
D
an increase in the length of the fatty acid tails.

Answers

Answer:

D

an increase in the length of the fatty acid tails.

Explanation:

As average annual temperatures decrease, we would expect to find phospholipids within the cell membranes of organisms to have both saturated

and unsaturated fatty acid tails. Saturated fatty acids tails are arranged linearly, in a way that maximizes interactions between the tails and

decreases bilayer fluidity. Unsaturated fatty acids, on the other hand, have more distance between the tails, fewer intermolecular interactions and

more membrane fluidity. Longer tails and decreased cholesterol also decrease fluidity

The answer is Going to be D

Inside
Outside
0
10
20.30
50
60
30
80
90 100
Time
(minūtes)
Change in
mass 19
6
0
3
2
9
33:
39
N
1.5.1
(10)
Plot a line graph of these results.
List TW nyimnmental factors that sould have caused the greater change
12​

Answers

Answer:

The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south

The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south

which symptom is not included in the diagnosis of water intoxication?

Hyponatremia
Loss of electrolytes
Confusion
Cell shrinkage

Answers

Cell shrinkage will be the answer

Help me please !!! :)

Answers

Answer:

they both have oxygen in the atmosphere

Explanation:

Which of the following is a function of the lymphatic system?
a.
filters blood
c.
produces red blood cells
b.
absorbs nutrients
d.
produces bone marrow



Please select the best answer from the choices provided


A
B
C
D

Answers

A-Filters Blood
YW;)

Which system includes all life on Earth?
A biosphere
B cryosphere
C geosphere
D hydrosphere

Answers

Answer:

Biosphere

Explanation:

contain all the planets living things

A.

Bio means life so the sender is A

Distinguish between apocarpous and syncarpous

Answers

1.The Flower Has Several Ovaries In Apocarpous.There is a single ovary in syncarpous
2. On maturity apocarpous ovary forms fruitlet of aggregate type. on maturity syncarpous ovary forms a simple fruit.
Hope either of these helped

Which would be true of sexual reproduction?

a
increases survival rate
b
involves one parent
c
increases genetic diversity
d
produces identical offspring

Answers

Answer:

c increases genetic diversity

Explanation:

Answer:

C. increases genetic diversity

Explanation:

First, by process of elimination: sexual production doesn't necessarily increase survival rate, it can, but not always. Sexual reproduction involves two parents, so b is wrong. And sexual reproduction doesn't produce identical offspring, because it's mixing the genes from both parents, do d is wrong. That only leaves c, with two parents, the gene pool is always expanding, and with less chance of mutation

hope this helps:)

How does gas exchange occur in plants? ​

Answers

Plants obtain the gases they need through their leaves. They require oxygen for respiration and carbon dioxide for photosynthesis.

Explanation:

The gases diffuse between the cells spaces of the leaf through pores, which are normally on the underside of the leaf - stomata. From these spaces they will diffuse into the cells that require them.

The hypothesis would not have been supported
by the data if...

A. traits independently assorted in
approximately a 9:3:3:1 ratio.

B. the traits for white fur and red eyes were
always inherited together.

C. all the F1 offspring had the same phenotype.

Answers

Answer: B

the traits for white fur and red eyes were always inherited together.

Explanation:

The hypothesis would not have been supported by the data if the traits for white fur and red eyes were always inherited together by the law of independent Assortment.

What is law of independent Assortment?The law of independent assortment selects alleles of two extra genes into gametes independently of each other.The allele acquired for one gene is unrelated to the allele obtained for another.Mendel's experiment constantly shown that the progeny's distinctive combinations are always unique from their parents'.He formulated the Law of Independent Assortment on this premise.

So we can conclude that as the qualities for white fur and red eyes are not usually inherited together, we may deduce that the two features are regulated by distinct genes and are independently shown in the person, as stated by the law of independent Assortment.

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is mars Held in orbit by the gravitational pull of a planet

Answers

Answer:

No

Explanation:

Mars orbits the Sun, a star. The Sun's gravity keeps Mars in orbit, not a planet.

Good luck ^^

A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings?
A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings?
A.
respiratory and muscular systems
B.
skeletal and digestive systems
C.
respiratory and digestive systems
D.
skeletal and muscular systems

Answers

Answer:

D

Explanation:

skeletal and muscular systems

As the territory of Africanized bees continues to expand, what is the most likely outcome?

Answers

Answer:

Competition among nectar- and pollen-feeding invertebrate pollinators and resource partitioning are affected by introduced Africanized Honey Bees. When Africanized Honey Bees compete with other species of honey bees for flowers, the Africanized bees may displace the other bees from the food sources.

(8.9B) A student made a chart to classify plates by the types of boundaries. What crustal
feature is most likely found between the South American and African plates? *

A Folded mountain
B Ocean trench
C Mid-ocean ridge
D Fault

Answers

Answer:

folded mountain

hope it will help you

The crustal feature is most likely found between the South American and African plates is folded mountain. The correct option is A.

What is folded mountain?

When two or more of the tectonic plates of Earth are forced together, fold mountains are formed.

Rocks and debris are bent and folded into rocky outcrops, hills, mountains, and entire mountain ranges at these interacting, compressing limits. Orogeny, a process, is what produces fold mountains.

While having a narrower width than their length, fold mountains are very long.

Concave and convex slopes are typically present on opposite sides of fold mountains. Most fold mountains are located on the edges of continents that face the ocean.

A student created a chart to categorize plates according to the different boundary types. The folded mountain is most likely the crustal feature that lies between the South American and African plates.

Thus, the correct option is A.

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Which organisms does the rabbit eat ?

Answers

Answer:

Plants /producers

Explanation:

Hope this helps and have a great day!!!!

Answer:

plants,broccoli,Brussels sprouts,seeds,roots etc.

Explanation:

I hope it will help u

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NOUVELLES FRONTIERES 10E 80 Answers for this page of the book help please I need to pass HI GIRLIES HELP ME PLEASE :) THANK U SM LIKE I LITERALLY AM IN LOVE WITH YOU Who is down for a Amazon card trade for steam gift card Which statement BEST describes rural population change in the countries listed in the graph?A. Iceland became more urban. B. The rural population is decreasing or remaining unchanged. C. Portugal has the largest rural population total. D. The rural population is increasing or remaining unchanged. Which statement is true?A: - 16/6 is equivalent to 8/3 because 8/3 x -2/-2 = - 16/6B: 3/5 is equivalent to - 9/15 because 3/5 x 3/3 = - 9/15C: 20/6 is equivalent to - 10/-3 because - 10/-3 x -2/-2 = 20/6D: - 5/8 is equivalent to 20/32 because - 5/8 x 4/4 = 20/32 QuestionType your response in the box.Explain the relationship between physical activity, fitness, health, and wellness. Enoch is two times as old as MARTIN.three years ago,the difference between their ages was fifteen years.find their present ages Lines Line D E and Line A B are parallel. Lines D E and A B are parallel. Angles B and D are alternate interior angles. Which angles represent alternate interior angles How did the world come to the brink of a second world war? (at least 2 paragraphs pls help!) During the battle at Austerlitz Prince Andrey was **PLEASE AN IPO CHART AND A C++ PROGRAM FOR EACH QUESTION**20. When you borrow money to buy a house, a car, or for some other purpose, you repay the loan by making periodic payments over a certain period of time. Of course, the lending company will charge interest on the loan. Every periodic payment consists of the interest on the loan and the payment toward the principal amount. To be specific, suppose that you borrow $1,000 at an interest rate of 7.2% per year and the payments are monthly. Suppose that your monthly payment is $25. Now, the interest is 7.2% per year and the payments are monthly, so the interest rate per month is 7.2 / 12 5 0.6%. The first months interest on $1,000 is 1000 3 0.006 5 6. Because the payment is $25 and the interest for the first month is $6, the payment toward the principal amount is 25 2 6 5 19. This means after making the first payment, the loan amount is 1, 000 2 19 5 981. For the second payment, the interest is calculated on $981. So the interest for the second month is 981 3 0.006 5 5.886, that is, approximately $5.89. This implies that the payment toward the principal is 25 2 5.89 5 19.11 and the remain- ing balance after the second payment is 981 2 19.11 5 961.89. This process is repeated until the loan is paid. Write a program that accepts as input the loan amount, the interest rate per year, and the monthly payment. (Enter the interest rate as a percentage. For example, if the interest rate is 7.2% per year, then enter 7.2.) The program then out- puts the number of months it would take to repay the loan. (Note that if the monthly payment is less than the first months interest, then after each payment, the loan amount will increase. In this case, the program must warn the borrower that the monthly payment is too low, and with this monthly payment, the loan amount could not be repaid.)28. (Apartment problem) A real estate office handles, say, 50 apartment units. When the rent is, say, $600 per month, all the units are occupied. However, for each, say, $40 increase in rent, one unit becomes vacant. Moreover, each occupied unit requires an average of $27 per month for maintenance. How many units should be rented to maximize the profit?Write a program that prompts the user to enter:a. The total number of units.b. The rent to occupy all the units.c. The increase in rent that results in a vacant unit.d. Amount to maintain a rented unit.The program then outputs the number of units to be rented to maximize the profit.30. Let n be an integer. The value of the expression lim (1 1 1 ) is n` n written as e. This number e appears in many places in mathematics. For example, it appears in the formula A 5 Pert to compute the total mount accumulated when the interest is compounded continuously. It also appears in problems relating to exponential growth and decay. It is known that e is an irrational number. The value of e to nine decimal places is e 5 2.718281827. Write a program that computes the value n of the expression lim (1 1 1 ) between certain values of n and then n` n compare the values with e. For example, you can compute the values of the expression between 100 and 10,000 with an increment of 100, or between 1,000 and 1,000,000 with an increment of 1,000. Since water is much denser than air, deep-sea divers experience a much higher ambient pressure underwater. Each 10 meters of depth underwater adds another 1 atm to the ambient pressure experienced by the diver. (Note: this is in addition to the 1 atm ambient pressure at the surface of the water!) What pressure, in psi, is experienced by a diver 50.0 meters below the surface of the water HELP ASAP 20 OR MORE POINTS!!!!In Brian Greene's "A Physicist Explains Why Parallel Universes May Exist", what reason does Greene give for why he believes parallel universes may exist? Question 1 options: Worm holes make traveling between parallel universes possible. There are only so many ways matter can arrange itself within that infinite universe. He has seen a parallel universe himself. Scientists have already proven the existence of parallel universes. What is a cell?a. The smallest unit of the atomb. The smallest unit of lifec. The largest unit of lifed. The smallest unit of apopulation A gas made up of atoms escapes through a pinhole 0.392 times as fast as Ne gas. Write the chemical formula of the gas. question:2x-5x+3 answer: 4. Which of the following indicates the multiplication property of equality when solving Vz= 5?O A.Y2 = 2(5)O B.2V) = 5O C.212) = 2(5)O D.V2 = 5/2 Coach Elyson claims that 90% of her volleyball serves are good serves. The captain of the team thinks Coach Elyson has a lower rate of good serves. To test this, 50 of the coachs serves are randomly selected and 41 of them are good. To determine if these data provide convincing evidence that the proportion of Coach Elysons serves that are good is less than 90%, 100 trials of a simulation are conducted. The team captains hypotheses are: H0: p = 90% and Ha: p < 90%, where p = the true proportion of Coach Elysons serves that are good. Based on the results of the simulation, what is an estimate of the P-value of the test?A dotplot. A number line labeled simulated sample proportion of good serves goes from 80 to 98 percent. 80, 2; 84, 13; 86, 11; 88, 12; 90, 23; 92, 12; 94, 14; 96, 10; 98, 3.0%2%4%98% If you bought a lunch for $4.60 and the tax rate was 6%,How much is the total owed?