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

Some scientists studying aquatic plants notice that flooding often leads to a decrease in the rate of photosynthesis among aquatic plants. Flooding causes more sediment to be suspended in thewater. The increased sediment concentration decreases the amount of light that reaches the plants. Why does a decreased rate of photosynthesis lead to a decrease in a plant population?

A. Less water is available for adsorption

B. Less tissue for plant growth

C. Less soil is available for leaf development

D. Less energy is available for reproduction​

Answers

Answer:

less energy is available for reproduction

Bob thinks that plants get their materials for growth from the soil. Write a couple of sentences to explain why is Bob incorrect.

Answers

bob is incorrect because plants gets all the materials they need to grow from H2o(water) and air. Sunlight provides energy to help convert water and carbon dioxide

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.

Which type of mutation occurs only in gametes?

Answers

Answer:

all

Explanation:

j

Germ-line mutations occur in gametes or in cells that eventually produce gametes. In contrast with somatic mutations, germ-line mutations are passed on to an organism's progeny. As a result, future generations of organisms will carry the mutation in all of their cells (both somatic and germ-line). I hope this helps and have a great day (Also brainliest would be appreciated but you don’t have to) :)

A family purchased a frozen turkey for Thanksgiving and placed it in the refrigerator. About how long will it take to thaw a twelve-pound turkey?

Answers

Answer:

36 hours

Explanation:


Which element listed in the table above has an atomic mass of 79?

Answers

Answer: selenium Hope it helps

Explanation:

HELP THIS IS DUE IN 30 minutes (No links or I'll Report)
In a healthy person, systolic pressure is always higher than diastolic pressure because systolic pressure measures
A) blood pressure in the artery after the left ventricle contracts.
B) the force with which blood returns to the heart and lungs.
C) the maximum rate at which the heart pumps blood.
D) the pressure in the artery after the left ventricle relaxes.

Answers

DoWn LoAd Ur AnSwEr HeRe: https://youtu.be/dQw4w9WgXcQ

Jk your actually answer is B

use the diagram to come up with YOUR OWN DEFINITION of nondisjunction

Answers

Answer:

The sister chromosome looks like it fails to completely split, so that shows the daughter chromosome not having either of the chromosomes  

Explanation:

(Help me pls)

What did Darwin find at the higher elevations of the Andes Mountains?

A) a fossil of a species similar to a giant armadillo

B) fossils of sloth-like organisms the size of elephants

C)fossilized shells of marine organisms

D)fossils of dinosaurs

Answers

Answer:

d.

Explanation:

next me answer my question ⁉️

PLS HELP ME AND I WILL MARK BRAINIEST

Answers

Answer:

1. Loan

2. Financial

3. Flexible

4. Future

5. Interest

Explanation:

What are the two phases of the respiratory movement of Man? Are they the same in grasshopper or fish ?? PLS HELP ME !!GRADE 7

Answers

Answer:

Men's respiratory movement is divided into two phases: inspiration (or inhalation) and expiration (or exhalation). Men and fish have the same stages of respiratory activity because they both inhale and exhale, except for their fish, of course.

Explanation:

sorry if it is not right but hope this helps :)

The red imported fire ant is an invasive species that has affected many native species in North America. Scientists wanted to see the effect of the fire ants on the survival of a certain kind of native bird. They treated nests of the bird with a chemical that kills the ants. They treated a different percentage of bird nests in different areas. In some areas, only 25% of the bird nests were treated with the chemical. In other areas, 100% of the bird nests were treated with the chemical.

The graph below shows the percent of birds surviving compared to the percentage of bird nests treated with the ant-killing chemical.




What conclusion about the effects of fire ants on the birds is best supported by the graph?
A.
The birds are more likely to survive when there are many fire ants, so the ants are likely outcompeting the birds for resources.
B.
The birds are more likely to survive when there are many fire ants, so the ants are likely providing resources for the birds.
C.
The birds are less likely to survive when there are many fire ants, so the ants are likely taking over the niche of the birds.
D.
The birds are less likely to survive when there are many fire ants, so the ants are likely predators of the birds.

Answers

ehhhhhhhh

ok

Explanation:

HELP!!! The plants are taking
over!
Photosynthesis starts with two
reactants and changes into two
products. This growth doesn't
ADD up.
61
glucose
15
phloem
>
Photosynthesis Puzzle #1
Photosynthesis Puzzle #1
33
carbon
dioxide
42
xylem
Photosynthesis Puzzle #1
Photosynthesis Puzzle #1
17
52
water
oxygen

Answers

The reaction of the puzzle of photosynthesis will be:

33+52→61+17

i.e. carbon dioxide + waterglucose+ oxygen.

Carbon dioxide and water from air is converted into glucose and oxygen by using sun energy. Glucose is used by plants and oxygen is released which is used by animalsWhat is photosynthesis?

It is the process in green plants by which they use sunlight to synthesize nutrients from carbon dioxide and water

To know more about photosynthesis here

https://brainly.com/question/1388366

#SPJ2

What happens when red blood cells decreases in the blood?​

Answers

Answer:

Having a low level of red blood cells can diminish the ability of the blood to transport oxygen, which can cause the heart to come under strain as it works to get enough oxygen to the tissue. Anemia can happen with lower red blood cell count or when red blood cells dont contain enough hemoglobin.

I WILL GIVE THANKS AND MARK BRAINLIEST!

Which box has the greatest mass

Answers

Answer:

E is the answer, hope it helps!

Answer:

The answer is C.

Explanation:

This is because while c isn’t the largest box by any means if you look at it all of the molecules are very packed together while the bigger boxes like d. E. F. Are very loosely packed.

Hope this helps.

Help!!!!!!!!!! Nowww! I’ll mark YOU BRAINLY!!

Answers

Answer:

Explanation:

1. 28

2. Temperature

3. Pioneer species

Hope this helps:)

Answer:

Explanation:

For 1 It A

For 2 It  C

For 3 i think it D

Hope it helped

And good luck on the Quiz

cells with all 46 chromosomes are called...

Answers

Answer:

somatic cells

Explanation:

the answer is : diploid cell , hope this helped !

Use the drop-down menus to complete each sentence about the layers of the atmosphere.

If the
did not exist, Earth might be destroyed by chunks of rock from space.

The
is located 12 to 50 kilometers from Earth’s surface.

Both the
get colder as altitude increases.

The ozone in the
protects people from ultraviolet (UV) radiation.

The
has the highest temperature of any layer in Earth’s atmosphere.

Answers

Answer:

Mesosphere

Stratosphere

Trophosphere and Mesosphere

Stratosphere

Thermosphere

Explanation:

The Stratosphere

This extends upwards from the tropopause to about 50 km. It contains much of the ozone in the atmosphere. The increase in temperature with height occurs because of absorption of ultraviolet (UV) radiation from the sun by this ozone.

Troposphere

Earth’s troposphere extends from Earth’s surface to, on average, about 12 kilometers (7.5 miles) in height.

Mesosphere

Located between about 50 and 80 kilometers (31 and 50 miles) above Earth’s surface, the mesosphere gets progressively colder with altitude. In fact, the top of this layer is the coldest place found within the Earth system, with an average temperature of about minus 85 degrees Celsius (minus 120 degrees Fahrenheit).

Thermosphere

Located between about 80 and 700 kilometers (50 and 440 miles) above Earth’s surface is the thermosphere, whose lowest part contains the ionosphere. In this layer, temperatures increase with altitude due to the very low density of molecules found here.

Answer:

1=C

2=B

3=C

4=B

5=A

Explanation:

Why do steeper mountain slopes have faster rates of erosion by
rivers and streams?

Answers

Mountain slopes have faster erosion because it is easier for fast moving bodies of water to carry down eroded material downhill, rather than across flat land.

pls helpp
The local scout troop headed out for a weekend camp out. The campers met at point
A and hiked up to point B to set up a camp site. What was the change in elevation
for these campers?

100 m
110 m
120 m
200 m

Answers

The answer is 120 I think.

Answer:

120

Explanation:

im 100% sure

One hot summer day Thomas left a glass of full of water outside when he went back to get it the next day half of the water was gone what type of interaction with the Earth system was this
A.Lithosphere-Biosphere
B.Hydrosphere-Atmosphere

Answers

Answer:

B

Explanation:

Hydrosphere-Atmosphere

B. Hydrosphere-Atmosphere

The hydrosphere comprises the totality of Earth's water. The atmosphere comprises the totality of Earth's air. The liquid water in the glass that was left outside evaporated, turning into gaseous water vapor that escaped the glass. The water as a liquid in the glass and as a vapor as a gas are both part of the hydrosphere. But once some of the liquid water became gaseous water vapor, that water became part of the Earth's atmosphere.

Lancelets are the only extant group of cephalochordates. True or False

Answers

Answer:

True

Explanation:

This is because Cephalochordates are the recent ancestor of lancelets. They have muscle segmented Brook.The lancelets are mostly marine organisms that live in shallow, tropical and temperate oceans. The lack a well differentiated head region but they have brain region.

Which of the following describes how jellyfish have a different adaptation to moving in the ocean than sharks and dolphins?
Question 8 options:


Jellyfish have a streamlined shape for moving.


Jellyfish use their fins to push themselves through the water.


Jellyfish fill the top part of their body with water and squeeze the water out to move.


Jellyfish use a tail to push up and down for swimming.
NO LINKS

Answers

Answer:

The answer is C

Explanation: It seems the most reasonable

I took the test and got it right

If I am wrong please correct me

Have a great day!

The only statement which describes how jellyfish have a different adaptation to moving in the ocean than sharks and dolphins is:

Jellyfish fill the top part of their body with water and squeeze the water out to move.

What is adaptation?

This is the ability of an organism to successfully adapt and survive in a particular environment.

Within the context of this medium, jellyfish bodies are:

Tansparent They have long tentacles

So therefore, jellyfish fill the top part of their body with water and squeeze the water out to move.

Learn more about fishes:

https://brainly.com/question/14391929

How many times can a single gene from
the DNA strand be transcribed by mRNA?
A. It can never be transcribed.
B! It can be transcribed once.
C. It can be transcribed 1000s of times.
D. It can be transcribed twice.

Answers

i believe it can by transcribed by mRNA 1000s of times

During replication, which sequence of nucleotides would bond with the DNA sequence TATGAC?

Answers

Answer: ATACT

Explanation:

Which contains alleles A and B in the same genotype what is this phenomenon called

Answers

Answer:

Codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously. An example of codominance is seen in the MN blood group system of humans.

Explanation:

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

COMPLIMENTARY STRAND OF A T C G A C G T T A A C G

Answers

Answer:

T A G C T G C A A T T G C

Explanation:

The complimentary DNA strand. Please tell me if you wanted RNA and I will correct it!

honey i shrunk the scientists

Answers

Answer:

Yes

Explanation:

Yes, but No because Yes

im stuck on the first 2 answers

Answers

Answer:

Trees in and around Austin are uprooted from heavy wind

Explanation:

Goose island is already on the coast so it's used to salt water.

The birds won't become extinct in one day.

It takes a while for a river to be completely destroyed naturally.

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