What was known before Franklin and Wilkins conducted their studies of DNA? Select three options.

DNA is found in the nucleus of a cell.
The human genetic code is made of 50,000 genes.
Organisms store and transmit genetic information.
DNA has a double-helix structure.
Cells contain protein molecules.

Answers

Answer 1

The correct answer will be-

  1. DNA is found in the nucleus of a cell

   2. Organisms store and transmit genetic information

   3. Cells contain protein molecules.

Explanation:

The study of DNA started much before the discoveries of Rosalind Franklin and Maurice Wilkins.

Nucleus of cell was discovered by Robert Brown in 1831 but the material present inside the nucleus called "nuclein" (DNA) came from the studies of Johann Friedrich Miescher in 1869.

Proteins as a constituent of cell were discovered by the experimental analysis of Gerhardus Johannes Mulder in 1837.

DNA as a genetic material came from the experimental studies of Frederick Griffith in 1928, Oswald Avery, Maclyn McCarty, and Colin MacLeod in 1944, and Hershey and Chase in 1952.

Franklin and Maurice Wilkins are known for their work on the the structure of DNA as they were able to produce high-resolution X-ray photographs of DNA fibres called Photo 51 in 1952 using X-ray diffraction technique. By 1953 Franklin concluded concluded that DNA shows helical structure with phosphates on outer side.

Thus, 1. DNA is found in the nucleus of a cell

        2. Organisms store and transmit genetic information

        3. Cells contain protein molecules.

            are the correct options.

Answer 2

Answer:

A, C, and E :DD

Explanation:

Hope this helps have a good day :>


Related Questions

similarities between seemingly unrelated organisms can be explained by Darwin's theory that organisms come from common ancestors true or false

Answers

Answer:

false

Explanation:

Answer:

Actually, this is true

Explanation

I just took the test on edu

In diffusion, molecules
spread out
condense


In diffusion,molecules spread out condense

Answers

Answer:

Spread out

Explanation:

If you were to spray perfume, you would be able to smell if you moved slightly away from where you sprayed it as the molecules have diffused.

Water lilies grow in freshwater ecosystems. When a water lily plant is kept in seawater, it wilts. Which statement best describes what happens to the water lily plants in seawater?

a.Water moves out of the cells of the lily by osmosis
b.Water moves into the cells of lily by osmosis
c.The cells of water lily plants get less oxygen from the seawater
d.The cells of water lily plants lose all important nutrients to the seawater


IN A TEST RN!!!!

Answers

answer: a

explanation: osmosis is a process where water moves from a less concentrated solution to a more concentrated one. seawater has more salt than the water inside the lily plant, so this causes the water from inside the plant to move out. without much water inside, the plant begins to wilt.

el nino affects the weather worldwide.
1 True
2 False​

Answers

I believe the answer would be true

Describe at least 3 areas of carbon storage in the carbon cycle and how the carbon moves between these sinks

Answers

The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.

2. Which particle's mass is similar to a proton's mass? ( A. an atom B. a nucleus C. a neutron D. an electron​

Answers

Answer:-

Option C. a neutron

Water molecules are able to attach to
other substances, particularly if they are
also polar.

Answers

Answer:

Water molecules form hydrogen bonds with each other and are strongly polar. This polarity allows it to dissociate icons in salts and bonds to each other polar substances such as alcohols and acids thus dissolving them.

Question 9 of 10
How does an atom become a positive ion?
A. It loses an electron,
B. It loses a neutron,
C. It gains an electron
D. It gains a neutron,
SUSAN

Answers

The answer is A it loses and election
Ionization or ionisation is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes. The resulting electrically charged atom or molecule is called an ion. Ionization can result from the loss of an electron after collisions with subatomic particles, collisions with other atoms, molecules and ions, or through the interaction with electromagnetic radiation. Heterolytic bond cleavage and heterolytic substitution reactions can result in the formation of ion pairs. Ionization can occur through radioactive decay by the internal conversion process, in which an excited nucleus transfers its energy to one of the inner-shell electrons causing it to be ejected. So it is A

Which of the following occurs just before the cell enters the G2 stage of
the cell cycle? *
O The nuclear membrane disintegrates.
O DNA replicates
O Centrioles form
O The nucleolus divides

Answers

Answer:

DNA replicates

Explanation:

S phase (Synthesis Phase) During this phase, the cell makes a variety of proteins that are needed for DNA replication. During S phase, which follows G1 phase, all of the chromosomes are replicated. Following replication, each chromosome now consists of two sister chromatids, the synthesis phase of interphase takes the longest because of the complexity of the genetic material being duplicated. Throughout interphase, nuclear DNA remains in a semi-condensed chromatin configuration

A beaker contains 0.64 L of water. What is the volume in milliliters?

Answers

0.64 L in milliliters is 640 milliliters.

When does facilitated diffusion occur?

Answers

Answer:

The word ‘diffusion’ means free movement across distance, with or without the presence of a barrier. However, there is a phenomenon known as facilitated diffusion which occurs at the cellular level. The cell does not allow free radicals and other harmful substances to enter and harm the cell organs.

Explanation:

Answer:

When certain large molecules are unable to move through the membrane without the help of channel proteins.

Explanation:

Facilitated diffusion occurs when large molecules that are unable to pass through a membrane on their own make use of channel proteins to move from one side of the membrane to the other. Facilitated diffusion can occur when a liquid on one side of a membrane has a higher osmotic pressure than a liquid on the other side of the membrane, but it isn’t a required feature of facilitated diffusion. Similarly, facilitated diffusion can occur when there’s a large membrane potential present, but it isn’t a required feature of facilitated diffusion. Facilitated diffusion doesn’t require the use of energy, so the presence of ATP is irrelevant to facilitated diffusion occurring.

Are ecosystems at the edge of forests more likely to stay healthy, or ecosystems in the interior of forests? Explain your choice. ​

Answers

Answer:

Interior because it is harder for humans to get machinery inside to chop down trees or harvest natural resources. They must start destroying from the edge inwards.

Explanation:

Answer:

The ecosystem in the interior of forests stay healthy.

Explanation:

Ecosystem at the edge of the forests are exposed to many things that can affect it and ecosystem in the forests are untouchable and are exposed to things that naturally occurring.

If a female lion runs a distance of 469.2 meters while chasing an antelope, how many millimeters did she run?

Answers

Answer:

the lion ran 469200 millimeters

Explanation:

469.2 x 100 = 469200

Identify the RNA bases that would pair up with the DNA sequence TGCACT.

TGCACT

ACGTGA

UCGUGA

ACGUGA

Answers

Answer:

D

Explanation:

It could be C also, but when translating to mRNA you replace T with U. I'd go with D.

New species develop when??? Please help!

Answers

Answer:

by speciation

Explanation:

new species from by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations.

2 dogs reproduce, 2 sex cells join together & form offspring. The resulting offspring is likely/
) A. Identical to parents
B. Both have traits from each parent.
C. to express only recessive traits

Answers

Answer:

B

They have traits of both parents some of which could be dominant.

The resulting offspring will have traits from each parent. The correct option is B.

What is genetic variation?

The difference in DNA between individuals or between populations is referred to as genetic variation.

Mutation and genetic recombination are two of the many sources of genetic variation. Although mutations are the ultimate source of genetic variation, other mechanisms such as genetic drift also contribute to it.

Heredity, also known as inheritance or biological inheritance, is the transmission of traits from one generation to the next.

Each of your parents has two copies of each of their genes, and each parent passes on only one copy to you.

Many of your characteristics, such as hair and skin color, are determined by genes that are passed down to you.

Thus, the correct option is B.

For more details regarding genetic variation, visit:

https://brainly.com/question/848479

#SPJ6

I’m snapdragons flower color is controlled by incomplete dominance...

Answers

I think you asking this. Heterozygous?

What stage of respiration immediately follows the process depicted below? (2 points)

A)Electron transport chain
B) Glycolysis
C) fermentation
D)krebs cycle

Answers

Image Attached

Answer:

D) Krebs' cycle

Explanation:

The stage of respiration shown is pyruvate oxidation. This is the intermediate stage between the first and second stages of aerobic respiration.

The first stage is glycolysis, which is the breakdown of glucose into two molecules of pyruvate. After pyruvate oxidation, the next stage is the Krebs cycle. The Krebs cycle is a series of reactions that release energy through  oxidation of acetyl-CoA.

Which statement below best describes the purpose of meiosis in creating gametes?

Answers

The purpose of meiosis is to produce gametes, or sex cells. During meiosis, four daughter cells are produced, each of which are haploid (containing half as many chromosomes as the parent cell).

The purpose of meiosis is to create gametes. Thus, it reduces the number of chromosomes to half.

What is meiosis?

In sexually reproducing organisms, meiosis is a kind of cell division that results in a reduction in the number of chromosomes in gametes (the sex cells, or egg and sperm). Body (or somatic) cells in humans are diploid, meaning they have two sets of chromosomes (one from each parent).

The egg and sperm that combine during fertilization must be haploid or have only one pair of chromosomes, in order to sustain this state. Each diploid cell divides twice during meiosis to produce four haploid daughter cells, which are gametes.

In humans, autosome cells contain 46 chromosomes, while gametes contain 23 chromosomes. Hence, the main purpose of meiosis is to divide the genetic material in half.

Learn more about meiosis, here:

https://brainly.com/question/7002092

#SPJ2

Autotrophs make glucose during _____.

Answers

Answer:

photosynthesis (autotrophs are mainly plants )

What type of bond is found in region 2?

A. Hydrogen bonds
B. Peptide bonds
C. Covalent bonds
D. Enzyme substrate bonds

Answers

Answer: A

Explanation:

Could anyone help me on my recent post?

Answers

Answer:

yes :D

Explanation:

Answer:

shore what u need

Explanation:

plzzzzzzzzzzzz helpppppppppppppp

Answers

Answer: No it takes a long time to form a fossil. Fossils don’t form within a few weeks. It probably took at least a decade for the dinosaur fossils to form, maybe even a century.

Explanation:

When fresh river water meets the salty ocean the waters do
a
They have different densities.
They form layers.
The fresh water floats on the salt water.
All of the above.

Answers

A.they have differentiations densities

How is IGCSE CEntre?

Answers

Answer:

so good place

Explanation:

Answer:

yepp it is a good place !!

how does metabolism work?

Answers

Answer:

Explanation:

Metabolism: Converting food into energy

Metabolism is the process by which your body converts what you eat and drink into energy. During this complex biochemical process, calories in food and beverages are combined with oxygen to release the energy your body needs to function.

i need help asap!! I will reward brainliest!

When focusing a specimen it neccessary to focus on the lowest magnification first before switching to higher magnification. why do you think this is important?​

Answers

Explanation:

the lower power will focus betterthan the high magnification

Choose the most appropriate name for the function described below The height reached by the rocket depends on the amount of fuel
A.Height(fuel),or H{f}
B.Fuel{height},or F[h
C.Fuel{rocket) or F{r}
D.Height{rocket}or H[r}

Answers

B. Fuel{height},or F[h

How can temperature and pH affect enzymes?

Answers

Answer:

raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. extreme pH values can cause enzymes to denature.

enzymes work best within specific temperature and pH ranges, and sub-optimal conditions can cause an enzyme to lose its ability to bind to a substrate.

Because enzymes work best within specific temperature and pH ranges, and sub-optimal conditions can cause an enzyme to lose its ability to bind to a substrate. Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. ... Extreme pH values can cause enzymes to denature

The measure of the mass of an atom is called ________.
Question 1 options:

isotope

proton

energy

atomic mass

Answers

The measure of mass an atom is called atomic mass

Answer:

D

Explanation:

Other Questions
When Proctor forgets the adultery commandment, it is an example of irony. What is the purpose of the irony in this scene? The auditors of Steffey Ltd., decided to study the cash receipts and disbursements for the month of July of the current year under audit. They obtained the bank reconciliations and the cash journals prepared by the company accountants, which revealed the following: June 30: Bank balance, $355,001; deposits in transit, $86,899; outstanding checks, $42,690; general ledger cash balance, $399,210. July 1: Cash receipts journal, $650,187; cash disbursements journal, $565,397. July 31: Bank balance, $506,100; deposits in transit, $51,240; outstanding checks, $73,340; general ledger cash balance, $484,000. Bank statement record of deposits: $835,846; of payments: $684,747.Required:Prepare a four-column proof of cash covering the month of July of the current year. Identify problems, if any. How to estimate the sums and differences Evaluate a2-b for a = 8 and b = 17.The value of the expression is square of 196 by division method helppp please its due today Henry makes $12.50 per hour for the first 40 hours he works in a week. For 5 pointseach additional hour he makes $18 per hour. How much did he make if heworked 44 1/2 hours last week? * Which of the following is equivalent of 8 as a fraction?A. B.24/3 C.24/8 D.16/4 a common mistake people make when working with exponents is to multiply the base by the exponent instead of raising the base to the power of the exponent. For instance, they would mistakenly say that 2^3 is 6 (because 2x3=6) when the correct answer is actually 8 (2x2x2=8) are there any pairs of numbers for which this mistake in thinking actually gives the correct answer? In other words are there any solutions to the equation a^x=a X what are the? What is the product of five and a number, decreased by eleven 3. An earthquake measures 3 on Richterscale:(i)Would it be recorded by a seismograph ?(ii)ls it likely to cause much damage ? A horse walked 30 minutes for 3.5 km and another 30 minutes for 2.5 km. What was the horse's speed in hours Fragments of metal or rock which enter the Earth's atmosphere from space are called:Meteorites Meteoroids Meteors Create an introductory paragraph that must conclude with a thesis that addresses the entire question for each of the following questions. Underline your thesis statement.A- Compare and contrast China's relationship with the Korea and either the Vietnam or Japan.B-Differentiate Buddhism's presence in China form the 1st century CE to the 9th century CEC-What were the political and economic similarities and differences between Tang and Song China?D-Describe the commonalities and the distinctions between trade in the West African Kingdoms and the Swahili City-states.E-What are the similarities and differences between the Web of the Indian Ocean trade in Southeast Asia as opposed to those in South Asia and the Middle East?F-Compare and contrast culture and trade in Mesoamerican and South American Civilizations 100-1500 CE. How is the simile used in this sentence? I need help!! Its so hard for me i tryed so many times and still no answers Which monarch was the target of the Gunpowder Plot? answer is James I ;D what is the mean (average) of 2,4,5,6,8 who or what is the focus of part 1 of Julie of the wolves according to the novels table of contents Who is the founder of microscope?