The table shows data Chargaff collected on DNA nitrogenous bases in five organisms.
Percentages of Bases in Five Organisms
Source of DNA A T G C
Streptococcus 29.8 31.6 20.5 18.0
Yeast 31.3 32.9 18.7 17.1
Herring 27.8 27.5 22.2 22.6
Human 30.9 29.4 19.9 19.8
E.coli 24.7 23.6 26.0 25.7

Which statement did Chargaff conclude based on these data? Note that a letter in brackets, such as [A] or [C], refers to the concentration of one of the nitrogenous bases.
A. in DNA molecules, [T] > [A] > [G] > [C]
B. in DNA molecules [A] = [G], and [C ] = [T]
C. in DNA molecules, [A] = [T], and [C ] = [G]
D. in single-stranded DNA molecules, [A] = [T] = [C ] = [G]

Answers

Answer 1

Answer: in DNA molecules, [A] = [T], and [C ] = [G]

Explanation:


Related Questions

Rabbits in most areas have a brown coat. The arctic hare has a bright white coat in
winter. How does the arctic hare's white color help it survive?

Answers

Answer:

Indeed, rabbits, in most of the planet, tend to have their fur colored brown, copper or other similar shades. Now, in the Arctic regions, these animals do not have this color, but a white one, similar to the environment that surrounds them. This is so because these animals, for evolutionary reasons, have adapted their fur to the snowy environment that surrounds them in the Arctic, in order to avoid being detected by potential predators, protecting themselves and trying to ensure their survival.

Pls help I’m failing

Answers

Answer:

C.

Explanation:

Not A. because it didn't mention that (and it's not true)

Not B. because that wasn't mentioned (and common sense tells you it incorrect)

C. because it was mentioned (differently) and it made perfect sense

Not D. because it didn't even talk about how many letters (or sounds) there was to be true (plus look at A. above)

Warm air is denser than cold air and it sinks.

A. True

B. False

Answers

Answer:

false, its less dense than air

Explanation:

Answer:

False

Explanation:

Who wrote about the idea that if more people are born then die it can lead 1 point
to war, famine, and will slow population growth.*

-Hutton

-Lamarck

-Malthus

-Farmers/Breeders

Answers

Malthus was the guy who wrote this

Certain prehistoric events led to the formation of oil. Which of the following was one of those events? A giant wind storms destroy forests. B glaciers melted at the north and south poles . C Life in the sea died and was buried under sediment. D heavy flooring soaked the earths crust.

Answers

Answer:

C oil is just dead animal remains

Explanation:

Answer: C

Explanation: ,

Which can be used to prevent initial entry of bacteria into the body?

Answers

Answer:

safeguard

Explanation:

safeguard sabon na skalam

Inflammation can be used to prevent initial entry of bacteria into the body.

The energy made from the movement of molecules is called _____ energy.

A
geothermal

B
chemical

C
potential

D
kinetic

Answers

Answer:

D: kinetic

Explanation:

Kinetic energy is the energy of motion. This can be the motion of large objects (macroscopic kinetic energy), or the movement of small atoms and molecules (microscopic kinetic energy).

The antibiotic rifampicin blocks transcription in many bacteria. In the presence of the antibiotic, adding sigma factor has no stimulating effect on RNA synthesis. A footprinting experiment on a rifamycin treated sample shows that the polymerase remains located at the promoter site in the presence of eNTPs and Mg2 ion. What step of transcription is rifamycin likely to block

Answers

Answer:

transcription initiation

Explanation:

Transcription is a process by which genetic information from DNA is used to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently utilized to synthesize a protein by a process called translation. Transcription in prokaryotes has three steps:

1-Initiation: the RNA polymerase is a multisubunit enzyme (holoenzyme) composed of two α, one β, one β’ and one ω and σ subunits (α2ββ’ωσ). This holoenzyme binds to the promoter region of the template DNA strand.

2-Elongation. The sigma σ factor of the holoenzyme is released and the complex and the core enzyme (α2 ββω) moves along the template strand, thereby producing an mRNA sequence

3-Termination. This step can be Rho-dependent, where a protein named "Rho" recognizes the termination site and stop transcription, and Rho-independent (transcription continues until the termination sequence is reached).

In consequence, Rifamycin is likely to block the initiation of transcription because the core RNA enzyme needs to bind the sigma factor (σ) for initiation of transcription in bacteria.

Identify the labeled structures

Answers

Answer:

what labeled structures?

Explanation:

Which of the following solutions would best address the issues of greatest concern in the community?
Construction of a seawall

Answers

Answer:

Construction of an offshore breakwater

Explanation:

A beach community was recently negatively affected by a hurricane. Community leaders are looking for a potential solution to prevent damage from future hurricanes. Below is a list of their concerns as well as how important each issue is to the community.

Community Concerns Concern Level

Wave action Low

Beachfront development Low

Nearshore aquaculture Low

Health of nearby coral reef Moderate

Roosting bird species High

Storm surge threat High

Construction of an offshore breakwater

I need to know what is the answer for number 6 and 7 and that’s all

Answers

Answer: Both are correct

Explanation:

PLEASE HELP FAST!!!!

As humans continued to burn more and more oil and natural resources what has happened
to the world's carbon dioxide output?

Answers

Answer:

Global warming 100%  one of them.  And Air pollution.

Explanation:

Good luck

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

I think the answer is A

True or false: Desertification is a natural process caused by natural events. ANSWER QUICK

Answers

Answer:

true?

Explanation:

A particular species of bacteria has a "a generation time" of 20 minutes. That is, every 20 minutes a single bacterium completes prokaryotic fission -- one bacterium is now two bacterial cells. This morning at 6:00 a.m. you made a sandwich and packed your lunchbox. What you were not aware of was that there were 10 bacteria cells of this species on the dollop of mayonnaise that you spread across your bread. At 12:00 p.m. (no on) You sit down and eat your entire sandwich! How many bacteria cells did you have for lunch? (Hint: use the formula 2axb x C = numbers of cells, where "a" - number of times per hour the bacteria reproduces, "5" the number of hours the bacteria had to reproduce, and "C" = the number of bacteria at the start).​

Answers

Answer:

Number of bacteria cells = 2621440 cells

Explanation:

The generation time of a bacteria specie is the time it takes for a population of bacteria to double in number. The generation time for most common bacteria is quite short, about 20 minutes to 1 hour.

Bacteria reproduce asexually by binary fission, in which the parent cell divides into two to produce two identical daughter cells.

In the given question, the generation time of the bacterial species is 20 minutes.

The time that have passed from between the time the sandwich was packed at 6:00 am to lunch time by 12:00 pm is 6 hours.

Using the given formula in the hint: number of cells = 2^(ab) × C

Where a = number of times per hour the bacteria reproduces; b = number of hours; C = number of bacteria at the start

a = 60 minutes/ 20 minutes = 3; b = 6; C = 10

Number of cells = 2^(3 × 6) × 10

Number of cells = 2621440 cells

The technology time for the maximum not unusual place bacteria is pretty short, approximately 20 mins to one hour. The number of bacteria cells did have for lunch =2621440 cells.

Bacteria reproduce via way of means of binary fission, wherein the discern molecular divides into a time of the bacterial species is 20 mins.The time which has handed from among the time the sandwich became packed at 6:00 am to lunchtime via way of means of 12:00 pm is 6 hours.Using the given formulation withinside the hint: range of cells =2^  (ab)×C.Where a = range of instances in step with hour the reproduces; b = nu of hours; C = number of bacteria on the start.a = 60 mins/ 20 mins  = 3; b = 6; C =10.The number of bacteria cells did have for lunch =2621440 cells.

What is bacterial cel?

Bacterial cells are exceptional from plant and animal cells. Bacteria are prokaryotes, because of this that they haven't any nucleus. A bacterial includes Capsule.

Thus it is clearly explained above that the number of bacteria cells did have for lunch =2621440 cells.

To learn more about the bacteria refer to link :

https://brainly.com/question/17817006

what are the functions of bioreactor?​

Answers

Answer:

The pricipal function of a accuretely designed bioreactor is to give a controlled environment to achieve optimal growth and/or product formation in the particular cell system employed.

What is true about the two daughter cells formed after the binary fission of a bacterium cell?
A) They have the same primary DNA but may have different plasmids.
B) They have variations in the primary DNA but may have a different set of plasmids.
C) They have variations in the primary DNA but have the same set of plasmids.
D) They have the same primary DNA and the same set of plasmids.

Answers

Answer:

A

Explanation:

They have the same primary DNA but may have different plasmids.

The two daughter cells which are formed after the binary fission of a bacterial cell have the same primary DNA but may have a different set of plasmids. Thus, the correct option is B.

What is Binary fission?

Binary fission is a type of asexual reproduction where a cell body is separated into two different bodies.

During binary fission, the genetic material of an organism is duplicated in the parent cell which enables the two new organisms formed to be able to contain the separate copy of DNA in their nucleus.

In a bacterium cell, when the two daughter cells are formed after the process of binary fission, they contain the same primary DNA but have different plasmids.

Therefore, the correct option is B.

Learn more about Bacteria here:

https://brainly.com/question/8008968

#SPJ2

Count the number of new species that form in each group beginning at 60 mya (the first three species in each group were present around 64 mya, the first time period sampled, so we don't know when those species first appear in the fossil record).

Answers

Answer:

hello your question has some missing information attached below is the missing information

answer :

New planktonic larvae species  =  10 species

New Non-planktonic larvae species = 26 species

Explanation:

calculate for the number of new species that form in each group

From the question it can seen that 3 species were present before 60 mya in each set

hence to calculate for the number of new species that form in each group

= Total number of species - number of species present at the beginning of 60mya

Group 1 ( New planktonic larvae species )

= 13 -3 =  10 species

Group 2 ( New Non-planktonic larvae species )

= 29 - 3 = 26 species

Where do most transform boundaries occur?

Answers

Answer:

QUESTION:

Where do most transform boundaries occur?

ANSWER:

Transform Plate Boundaries are locations where two plates slide past one another. The fracture zone that forms a transform plate boundary is known as a transform fault. Most transform faults are found in the ocean basin and connect offsets in the mid-ocean ridges.

Explanation:

Hope that this helps you out! :)

If any questions, please leave them below and I will try my best and help you.

Have a great rest of your day/night!

Please thank me on my profile if this answer has helped you!

what are the functions of sex chromosomes?

Answers

All humans have 46 chromosomes, 23 derived from either biological parent who has their own set.

Sex chromosomes make gene passing possible through creating offspring.

During which cell division phase does the nuclear membrane disappear?
A) telophase
B) metaphase
C) anaphase
D) prophase

Answers

Answer:

B)Metaphase

Explanation:

During metaphase, the nuclear membrane disappears and the chromosomes become aligned half way between the centrioles.

Answer:

Prophase

Explanation:

D

help its due this Wednesday

Answers

Answer:

first food chain:

The Producer: the trees

The Primary Consumers: elephants

The Secondary Consumers: the cheetah

The Scavengers: the termites

The Decomposers or Detritivores: mushrooms

second food chain

The Producer: grass

The Primary Consumers: zebras

The Secondary Consumers: the hyena

The Scavengers: the vultures

The Decomposers or Detritivores: microorganisms

the food web:

The Producers - the trees and grass.

The Primary Consumers – the zebras and elephants.

The Secondary Consumers – the cheetah, hyena.

The Scavengers –  the termites, vultures

The Decomposers or Detritivores – mushrooms microorganisms.

If the amount of primary Consumers increases, the number of producers would decrease and the number of other consumers would increase, but after a short time their number would also decrease and it causes immigrations.

Also, there's a nice picture I have found on a site;

What is the correct equation for the breakdown of ozone? please answer quick

Answers

Answer:    This electricity converts the oxygen molecule to ozone. Our equation is as follows: 3O2 + energy = 2O3.

The correct equation for the breakdown of ozone can typically occur in a series of two steps known as the destruction of ozone. It is illustrated thus;

Cl + O3 ⇒ ClO + O2ClO + O ⇒ Cl + O2

The net reaction of the above process is the reaction of an oxygen atom with an ozone particle to form two molecules of oxygen.

The catalyst in this reaction is chlorine because it undergoes changes as the process continues while ozone is removed in the process. In the presence of sunlight, atomic oxygen is formed.

This entire process is referred to as the destruction of ozone.

Learn more here:

https://brainly.com/question/22561483

What principle is used in the above diagram to calculate the amount of carbon dioxide that is absorbed by land?

Answers

Answer:

The law of conservation of mass

Explanation:

In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so the quantity can neither be added nor be removed.

rho = density

t = time

nabla = divergence

v = flow velocity field

Betelgeuse is hotter than Spica.
True or false?

Answers

Answer:

False

Explanation:

Betelgeuse is roughly 3x less colder than Spica.

What is the importance of mitosis for unicellular organisms?
A) asexual reproduction
B) sexual reproduction
C) repair of damaged tissue
D) growth

Answers

Answer:

A) asexual reproduction

Explanation:

Mitosis plays an important part in the life cycle of most living things, though to varying extents. In unicellular organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell. In multicellular organisms, mitosis produces more cells for growth and repair.

Answer:

hello again

Explanation:

motosis play an important

See the Punnett square above. What are the chances these parents will have offspring with a homo-zygous recessive trait?

2 in 4 (50%)
1 in 4 (25%)
O in 4 (0%)
4 in 4 (100%)​

Answers

The answer is 0 in 4 (0%)

where the input molecules of respiration come from

Answers

Answer:

see the explanation

Explanation:

Most of the steps of cellular respiration take place in the mitochondria. Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

a. DNA replication produces two identical DNA molecules, called ________which separate during mitosis.
b. After chromosomes condense, the __________ is the region where the identical DNA molecules are most tightly attached to each other.
c. During mitosis, microtubules attach to chromosome; at the ____________
d. Ir dividing cells, most Of the cell's growth Occurs during ___________

Answers

Answer:

a. sister chromatids

b. histone

c. metaphase plate

d. interphase (if not a choice, then prophase)

20.
_Cell division in prokaryotic cells is
a. Sexual
b. Asexual
C. Mitosis
d. Interphase

Answers

Answer:

it's binary fission

because --The cell division process of prokaryotes, called binary fission, is a less complicated and much quicker process than cell division in eukaryotes. ... The single, circular DNA chromosome of bacteria is not enclosed in a nucleus, but instead occupies a specific location, the nucleoid, within the cell.

Other Questions
Convert the number to scientific notation.299,792,458 meters per second= Anyone know how to do this people are answering the question but arent choosing two anwsers Which example describes a primary sourceA painting of Charlemagne made by a Renaissance artist in the8. A biography or Charlemagne witten by a trend and attendantEinhard in the early 9th centuryc. A movie about the lives of Charlemagne and his friend andD. An article discussing the political actions or Charlemagne writtenby an American professor Which can be used to prevent initial entry of bacteria into the body? what is the role of the prosecutor in a civil case Could someone help me with these 2 questions find x please helppppppppppppppo HELP ME IMMEDIATELY!!!! A phone company offers two monthly plans. Plan A costs $22 plus an additional $0.12 for each minute of calls. Plan B costs $27 plus an additional $0.10 foreach minute of calls.For what amount of calling do the two plans cost thesome? Daniel bought a bicycle for $80 and a helmet for $20. The sales tax was 5%. How much did Daniel pay for the two items, including tax? please help im stuck on this WHAT SHAPE IS THIS Pls send help pls Help plz. This is a test due by the end of class. Any help or advice will be good. Solve at least one or both problems if can. I really really reallyyyyyyyy need helppppppppppooo Your teacher says he will give you 2200 seconds to complete the practice quiz, how long is this in hours? Express your answer rounded to the nearest hundredth of an hour. A gas confined in a 515cm3 container exerts a pressure of 107.4kPa at 38.6C. At what Celsius temperature will it exert a pressure of 635.7kPa if it is placed into a 644cm3 container? The probability of event A is 0.42, and the probability of event B is 0.39. If A and B are independent events, what is P(A and B)? Before Christianity was legal, its believers practiced their religion openly and publicly and were respected by those of other beliefs.True or false what is the rate of change of y=9x the author refers to plato in paragraph 13 to ? the photographs in the article help the reader understand Did the Tsars family seem to know what was going to happen to them? Explain!