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3 years ago

What are 20 things that are found today on earth that demonstrate our connection to stars?

Biology

1 answer:

Aleksandr [31]3 years ago

7 0

Answer:

Explanation:

telliscope moon rock mars rock sky and 1 1 1 1 1 1 1 1 1 1 2n3ehd ok i cant delteat that the next thing s books and of coruse the sun and also t

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Proteins may be classified according to their three-dimensional shapes. Determine whether the following examples and description

m_a_m_a [10]

Answer:

-often function as enzymes or transport proteins ⇒ globular proteins

-peptide chains arranged in long strands, or fibers ⇒ fibrous proteins

-peptide chains highly folded into spherical shapes ⇒ globular proteins

-keratins ⇒ fibrous proteins

-hemoglobin ⇒ globular proteins

-water-soluble ⇒ globular proteins

-collagens ⇒ fibrous proteins

-insoluble in water ⇒ fibrous proteins

-generally function in structure and support ⇒ fibrous proteins

Explanation:

Fibrous proteins are composed by large polypeptide chains which interact each other and form large structures. They have water insoluble and have structural and protection functions- they are components of cells and tissues. Examples are: collagen, fibronectin, keratin, elastin, actin.

Globular proteins have a spherical compact structure in which hydrophobic aminoacids are buried inside the structure and hydrophilic aminoacids (which can interact with water molecules) are exposed to the exterior medium. For this, they are water soluble. They have often transport and catalytic functions. For example: hemoglobin, mioglobin, albumin, enzymes in general.

7 0

3 years ago

Why are some diseases more common in certain groups of people, such as caucasians or African Americans

Anna71 [15]

Answer:

Some diseases are more common in certain groups of people, such as Caucasians or African Americans because individuals in such ethnic groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and a particular genetic disorder may be more frequently seen in such groups if one of these shared genes contains a disease-causing mutation.

Explanation:

Some genetic diseases are frequently seen in certain ethnic groups like Caucasians or African Americans. Individuals in such groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and one of these shared genes may contains a disease-causing mutation.

Examples of certain genetic disorders that are more common in particular ethnic groups include the Tay-Sachs disease, which is more common in people of eastern and central Europe (Ashkenazi), Jewish or French Canadian ancestry and the sickle cell disease, which occur among people of African, African American, or Mediterranean heritage.

Some genetic disorders are more common in people whose ancestry can be traced to a particular geographic area. The factors that can lead to development of populations with very different genetic allele frequencies include their geographic origin, selection, patterns of migration, historic events, etc. Certain natural barriers like oceans and other water bodies, high mountains, large deserts, or major cultural factors had prevented communication and interaction between people. So mating was restricted within the group, and this produces genetic marker differences and differences in the presence of specific disease-related alleles.

6 0

3 years ago

Which energy conversion occurs in the cells of an animal, such as the

zimovet [89]

I think C, correct me if I’m wrong.

3 0

3 years ago

Read 2 more answers

Number________ is the chloroplast. The chloroplast helps the plant obtain food by__________.Number _____________ is the central

stepan [7]

Answer:

Number 3 is the chloroplast. The chloroplast helps the plant obtain food by photosynthesis. Number 1 is the central vacuole. The central vacuole helps a plant maintain its structure by turgor pressure.

8 0

2 years ago

Answer please!!!!!!!!

Vladimir [108]

Answer:

Explanation:

7 0

3 years ago