First photo of dna which helped scientists understand its structure.

Answers

Answer 1

Answer:

Franklin´s Photo 51 helped scientists learn more about the three-dimensional structure of DNA and enabled scientists to understand DNA´s role in heredity. X-ray crystallography, the technique Franklin used to produce Photo 51 of DNA, is a method scientists use to determine the three-dimensional structure of a crystal

Explanation:

i hope i was helpful


Related Questions

What was the impact of excerise stress on blood pressure and heart rate?

Answers

Answer:

Effects of exercise on blood pressure

Your muscles need more oxygen than they do when you're at rest, so you have to breathe more quickly. Your heart starts to pump harder and faster to circulate blood to deliver oxygen to your muscles. As a result, systolic blood pressure rises.

Explanation:

Streams in watershed I experience substantially more algal blooms than those in watershed IV. Streams in watershed I experience substantially more algal blooms than those in watershed IV. A When precipitation varies, streams in watershed II experience the greatest fluctuations in water volume. When precipitation varies, streams in watershed II experience the greatest fluctuations in water volume. B Watershed III has the highest percentage of impervious surfaces. Watershed III has the highest percentage of impervious surfaces. C The water quality of streams in watershed IV is excellent because of the abundance of nutrients available to aquatic organisms. The water quality of streams in watershed IV is excellent because of the abundance of nutrients available to aquatic organisms. D Low dissolved oxygen is a severe problem in the streams in watershed I because of the inability of light to penetrate the forest canopy

Answers

Low dissolved oxygen is a severe problem in the streams in watershed I because of the inability of light to penetrate the forest canopy.

What is Watershed?

This is defined as any surface area from which runoff resulting from rainfall is collected and drained through a common point.

Watershed I has the forest which has tall trees which form canopies as its highest land use. Due to the inability of light to penetrate, there is a reduction in photosynthetic activity by plants and reduction in oxygen produced which is why option D was chosen.

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What happens to organisms with a variation that prevents them from competing as well with other organisms in nature?

Answers

Answer:

When two organisms or populations compete with each other, whether it be directly or indirectly, one of several outcomes can be expected. In extreme cases one population (or individual) out-competes the other and the 'losing' organism becomes extinct from the area.

Explanation:

sry if this is wrong you can sue if you fali the test

0 0 11. Choose the best answer. ​

Answers

Answer:

algae - crown pls

Explanation:

algae because if there wasnt algae the food chain wouldnt survive

8. What would happen to a low-growing fruit bush that was infected by the Gibberella fujikuroi fungus?

Answers

Answer:

It causes bakanae disease in rice seedlings.

. Give examples of how climate change may lead to the emergence, expansion, and extinction of species.

Answers

Instead, climate change was found to typically lead to local extinctions and declines by influencing interactions between species, such as reducing prey populations for predators.

Which correctly describes a process that occurs in bacteria.

Answers

Answer:

In binary fission, the two new cells that are formed are susceptible to the same antibiotic.

Explanation:

What term describes all of the bacteria, protozoa, fungi, and archaea that inhabit our bodies?.

Answers

Answer:

bacteria, archaea, fungi (yeasts and molds), algae, protozoa, and viruses—are summarized below. Links to the more detailed articles on each of the major groups are provided. Bacteria (eubacteria and archaea)

Explanation:

Does this answer your question???

What causes the expression of a recessive trait?

one dominant gene

two recessive factors (alleles)

two dominant factors (alleles)

one dominant and one recessive factor (allele)

Answers

Answer:

two recessive alleles

Explanation:

the last one is wrong since the dominant allele kinda like "dominates" the recessive so the trait turns out to be dominant

Biology question on DNA 20 Points

Answers

Explanation:

hydrogen bond

..............

......

.........

Which of these is the most likely effect of the Industrial Revolution on peppered moths in the city?

Answers

Answer:

D

Explanation:

Since the trees became darker bc of the smoke of the factories, light colored moths can't camouflage on dark trees.

Bivalent formation and crossing over are two key events that typically occur at the beginning of: ___________

Answers

Answer:

The answer is Meiosis.

Explanation:

It is when two key events cross over each other.

Describe the relationship between depth and the number of pelagic organisms. What explains this relationship?

Answers

The numbers of pelagic organisms and species decrease with increasing depth due to unsuitable environment.

Relation of pelagic organisms and depth

There is inverse relationship between depth and the number of pelagic organisms because when the depth increases, the number of organisms decreases and vice versa.

So we can conclude that the numbers of individuals and species decrease with increasing depth.

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A population will always grow exponentially __________.

Answers

Answer:

False

Explanation:

Populations cannot grow exponentially indefinitely.

Which energy conversion occurs in the cells of an animal, such as the
chipmunk shown in the photograph?
A. Kinetic energy
Nuclear energy
B. Light energy Chemical energy
O C. Kinetic energy → Potential energy
O D. Chemical energy → Potential energy

Answers

Answer:

D

Explanation:

Chemical energy → Potential energy

You discover a new type of marine organism that has the kidneys of a fish but no gills. What effect would the absence of gills have on excretion of nitrogenous waste?.

Answers

The effect of the absence of gills on the excretion of nitrogenous waste is nitrogen cannot be lost through the gills.

What effect would the absence of gills have on the excretion of nitrogenous waste?

Generally, Nitrogenous wastes are nitrogen compounds that are used to remove excess nitrogen from organisms.

In conclusion, Because nitrogen cannot be lost through the gills, it is excreted through the kidneys.

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Which one do I underline?

Answers

I think you should underline most geocentric, geogenous and have root systems.
i believe the answer is geocentric

Compare and contrast the two cell diagram below.

In the table below, identify Cell A and Cell B as eukaryotic or prokaryotic and as bacterial, plant, or fungal. Darken the circles that correctly identify

Answers

Almost positive diagram A is a animal cell that’s eukaryotic, and Diagram B is a plant cell that’s also eukaryotic.

Please help me with this due tomorrow can't find the answer anywhere else.

Answers

Characteristics of Living Organisms: Ability to reproduce independently, ability to grow

Characteristics of Viruses: Not made of cells, have a protein coat instead of a membrane.

Characteristics of Both: Can have a DNA genome, may mutate and evolve

Hope this helps!

The body is constantly trying to maintain a state of homeostasis. Part of this battle is to provide protection against foreign antigens. There are 2 ways our immune system responds to threatening invaders, specific immune responses and nonspecific immune response. Which of the following is NOT part of the specific immune response?

Answers

Answer:

Give me a list of choices please

If right please make brainleist for others to learn from this answer thanks!

Explanation:

Why is providing adequate carbohydrates to spare protein important to preventing complications in liver failure

Answers

Answer: The body uses carbohydrates for energy instead of proteins,

Explanation:

I hope this works

Which of the following animals follows an innate behavior to live in large groups of the same species?


lions

cheetahs

tigers

leopards

Answers

Answer:lions

Explanation:

What type of reproduction is most likely taking place?

Answers

The graph shows that the type of reproduction is ase xual reproduction. It is because the data tells us that the organisms were able to reproduce 300 offspring within three to four hours. The characteristic of an ase xual reproduction, which is able to reproduce in a short period of time, is evident in the graph.

Hope this answer helps ^^

Kendra is studying the energy pyramid shown. which statement is supported by the energy pyramid? the ecosystem can support fewer foxes than grasshoppers. foxes require less energy than birds. the ecosystem can support more foxes than birds. grasshoppers require more energy than birds.

Answers

Energy pyramid represents energy flow from one tropic level to other. According to energy pyramid, ecosystem can support fewer foxes than grasshoppers.

What is ecosystem?

Ecosystem an area where plants, animals, and other organisms, co-ordinate for their living.

Ecosystem pyramid includes graphical representation of biomass at each tropic level.

In energy pyramid after every level, 90% energy is lost in environment as heat. There is a loss of energy nearly at each tropic level.

According to the energy pyramid ecosystem can support fewer foxes than grasshoppers.

Thus, the correct option is A.

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Which of the following is an effect of both improper livestock and improper irrigation practices? (1 point)
Excess levels of nutrients in the water supply
O Excess amounts of water being withdrawn
Excess levels of metals in the water supply
O Waste seepage

Answers

Answer:

Excess amounts of water being withdrawn

Explanation:

I think its right

The correct answer is excess amounts of water being withdrawn.

What is livestock?

Domesticated animals raised in an agricultural context for the purpose of providing labor and producing agricultural goods such as meat, eggs, milk, fur, leather, and wool are known as livestock.

What are irrigation practices?

Irrigation is the artificial application of water to crops to meet their water requirements. Irrigation can also be used to deliver nutrients to the crops.

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When compared to organisms that utilize process a organism that utilize process b would most likely produce a offspring with

Answers

The offspring has characteristics of both parents due to two parent reproduction process.

What type of offspring is produced?

An organisms that utilize process of two parent reproduction as compared to the other organism that utilize process single parent reproduction, the offspring has characteristics of both parents because the offspring is made up of both parents.

So we can conclude that the offspring has characteristics of both parents due to two parent reproduction process.

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Answer: B - fever genetic differences

Explanation:

What is ozone?
A. A molecule that is formed by condensation
B. Acid gas
C. A large growing hole
D. A gas molecule that is made of three oxygen atoms

Answers

Answer: D. a gas molecule that is made of three oxygen atoms

help please. 15 points

Answers

Answer:

A to B

Explanation:

the shorter the line the quicker they got there

Which of the following can serve as evidence to support the claim that human consumption of water impacts Earth's systems?

A: increased dissolved solids in the lak
B:loss of the Lahontan cutthroat trout from the lake
C:decreased water levels in the lake
D:irrigation allows crops to grow better

Answers

A:increase dissolved solids in the lake.

PLSSS HELP IF YOU TURLY KNOW THISS

Answers

D because immigration means leaving or moving into another country

Answer:

A

Explanation:

Immigration is when a population of animals or people are leaving their group to join another group.

Therefore, B and C are automatically wrong.

A leaving a population. The animals are leaving the population that they once were part of which makes A correct. Migrating into a population would imply that the animals return to where they were living before and is therefore incorrect.

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