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3 years ago

Suggest why many globular proteins in contrast to fibrous proteins have catalytic or regulatory role

1 answer:

6 0

Globular proteins are usually spherical in shape and in term of structure, they are folded in such a way that their tertiary structures are made up of polar amino acids which arranged on the outside and the non polar amino acid are arranged on the inside. This arrangement is responsible for the solubility of the globular proteins and the protein structures is responsible for the catalytic functions of these proteins. Fibrous proteins are insoluble in water, the amino acids that made up this proteins are arranged in such a way that they can serve structural functions in the body.

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Analogous structures

Rasek [7]

corresponding in function but not in evolutionary origins. From a biology perspective.

7 0

3 years ago

What was known before Franklin and Wilkins conducted their studies of DNA? Check all that apply. DNA is found in the nucleus of

kvasek [131]

Answer:

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.

8 0

3 years ago

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2. Why do Earth's tectonic plates move?

Lena [83]

Answer:

D. They float on convection currents in the mantle.

Explanation:

4 0

2 years ago

which of the following is not a characteristic of Arthropods that has attributed to their diversity and success A. endoskeleton

ValentinkaMS [17]

A. endoskeleton

Endoskeleton is not a characteristic of Arthropods that has attributed to their diversity and success. Endoskeleton is defined as inner characteristics of the skeletal feature of an organisms such as bears, humans, fish and etc.

Exoskeleton on the other hand is the trait by which arthropods posses. It is skeletal feature that is described outside or is extrinsic, this is evident as crabs have their skeletons outside of their body.

6 0

2 years ago

Which is a correct interpretation of the cladogram shown below?

nataly862011 [7]

A cladogram is an image or a diagram that shows us an evolutionary relationship between different organisms. Up at the top we find the different organisms and their names. Along the side is where we find their characteristics. Anything that is past each characteristic will have that characteristic as you move up the cladogram. This diagram also shows which organisms are most closely related to one another.

Please see the image for an example. In this example we can see that the Koalas evolved after the trout.

I hope this helps, Regards.

7 0

3 years ago

Read 2 more answers