Photo 51 is a picture of the structure of DNA that was used to create a model of DNA. Who created the photo?James Watson and Francis Crick
Erwin Chargaff
Rosalind Franklin
Friedrich Miescher

Answers

Answer 1
Answer: DNA stands for deoxyribonucleicacid. It has a double strand that contains the genes (a hereditary material) ofthe organism. It was discovered by James Watson and Francis Crick. Their double-helixstructure was based on x-ray diffraction image named as Photograph 51 or Photo51. It was taken by Raymond Gosling, a pHD student under the supervision ofRosalind Franklin. They used this photo to determine the chemical and physicalstructure of the DNA and the bond that links the genes altogether. The answer is Rosalind Franklin
Answer 2
Answer:

Answer:

C. Rosland Franklin

Explanation:

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Which organisms gathers its energy directly from the sun

Answers

Possible answers could be:
plants
plants and bacteria
producers
autotrophs
photoautotrophs

Just pick whichever answer you remember your teacher/worksheet saying.

The organisms that gathers it's energy directly from the sun whole be the producers(plants).

What are producers in an ecosystem?

In the ecosystem, the producers are those organisms that are capable of generating their own food through thermal energy they trapped from sunlight.

A typical example of the producers in the ecosystem are the green plants.

Green plants make their food by taking sunlight and using the energy to make sugar in a process called photosynthesis.

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Biological weathering facts

Answers

Biological WeatheringBiological weathering would include the effect of animals and plants on the landscape. This is more than roots digging in and wedging rocks. Biological weathering is the actual molecular breakdown of minerals. There are things called lichens (combinations of fungi and algae) which live on rocks. Lichens slowly eat away at the surface of rocks. The amount of biological activity that breaks down minerals depends on how much life is in that area. You might find more activities like lichens near oceans where the air is humid and cooler. 

Introducing invasive species to an ecosystem results in an increase in biodiversity.true or false ?

Answers

Correct answer: False

Invasive species are those species, which lower the biodiversity to a such an extent that they can create monotypic community.

Invasive species can be any type of living organism like plant, insect, fungus, fish, bacteria or seeds of the organism or eggs that are not native to an ecosystem and can cause a great harm to the ecosystem, economy, health, and the environment too.







This is usually false since invasive species usually cause the extinction of other native species which actually means that biodiversity becomes smaller.

What happen when a cell divides?

Answers

When a cell divides it makes two whole new cells this process is called mitosis.
When a cell divides into 2 then that means that you are growing and a cell breaking into two is called mitosis.

Which organism is a fungus-like protist

Answers

Organism slime molds are fungus-like protists.

Further Explanation:

Slime molds are known to be fungus-like protists that grow as slimy masses on the decaying matter. These are usually observed on things such as rotting logs. The water molds are known to be fungus-like protists that are found in the moist soil as well as surface water. They reside as parasites or on decaying organisms.  

Fungus like protists have a feature that they do not move, and very few develop movement at a certain point in their lives. These are absorptive feeders on the decaying matter and resemble fungi as well as they reproduce with the spores just like fungi do. But, in other ways, they are slightly different from fungi as well as more like other protists. For instance, they have cell walls made up of cellulose, while fungi have cell walls made up of chitin. Like other protists, they have a complex life cycle having both sexual as well as asexual reproduction. These are also known to be motile in nature during certain phases of their cell cycle.

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Answer Details:

Grade: Middle School

Subject: Biology

Chapter: Classification of organisms.

Keywords:

Sexual reproduction, asexual reproduction, protists, slime molds, cellulose, absorptive feeders, chitin, cell cycle, life cycle.  

Slime molds are fungus-like protists. Molds are absorbing organisms that feed on decomposing organic materials. They reproduce via spores, just like fungi do.

Protists that resemble fungi and develop as slimy masses on decomposing debris are known as slime molds. These are frequently seen on items like decaying wood.

The water molds are protists that resemble fungi and are known to live in both surface water and damp soil. They live on living things that are decomposing or as parasites.  

Individual amoeba-like cells that combine to form a multicellular structure make up a cellular slime mold.

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Determine the most stable secondary structure that can be formed from the RNA oligonucleotide 5’-GAGUGCGCGAGCCUCU-3’. Consider only Watson-Crick base-pairing

Answers

Complementarity is achieved through interactions between nucleobases. In the RNA, base complements are adenine - uracil (A-U) and guanine -cytosine (G-C). RNA secondary structure is achieved when two regions of one strand base pair and form a double helix.
Respecting the rule of complementarity and base-pairing, some of the bases will pair and some will not, as it can be seen on the image. The stability depends on helix length, base composition, and the number of mismatches.