Help!!!!!!!!!!!!!!!!

If a mutation in the DNA group of an organism results in the replacement of an amino acid containing a polar r-group with anothe

Drupady [299]

A typical protein has four levels of organisation, which are primary, secondary, tertiary and quaternary structures.
A mutation that result in the replacement of the side chain of an amino acid will affect the tertiary structure of the protein. This is because the tertiary structure of a protein is primarily due to the interactions between the R groups of the amino acids that make up the protein. If the tertiary structure is affected, the function of the protein too will be negatively affected because the function of a protein depend on its tertiary structure.

8 0

3 years ago

Which statement best describes the composition of genetic material?

Aleksandr [31]

71/6 is the answer tho. Or 11.8333... or 11 and 5/6 (I said this first!!)

Btw, the answer is B

Brainliest?? ;D

6 0

2 years ago

Mitosis is a type of cell division. organize the images below to show the steps of mitosis.

barxatty [35]

Answer:

The correct order is F, E, C, G, H, A, D, and B (look at the image in the attached files)

Explanation:

Interphase: Stages G1, S, and G2. At this point probably, the chromatin duplication has already occurred, but it is still lax or dispersed. It has not condensed yet. Two pairs of centrioles are outside the nucleus (FIGURE F)
Prophase: Centrioles move forward to the opposite poles of the cell. Chromatin is condensed and individual chromosomes are now visible. The nuclear membrane breaks into many pieces. Spindle apparatus -microtubules- forms. (FIGURE E)
Metaphase: The polar and the kinetochore fibers drive each individual chromosome to the equatorial plane. This stage ends when all the chromosomes are completely arranged in the medial area. (FIGURE C)
Anaphase: Sister chromatids separate and move to the opposite poles of the cells, driven by the microtubules. In each pole, there are a pair of centrioles (FIGURE G and H).
Telophase: The nuclear membrane rearranges. Each sister chromatid becomes now a new chromosome. There is a pair of centrioles outside each of the nuclei. (FIGURE A)
Cytokinesis occurs at the end of the cell division. The rest of the cell is divided into two new daughter cells. Each daughter cell is an identical copy of the other cell, with the exact same genetic material (FIGURE D).
Decondensation of the genetic material of each new cell (FIGURE B).

5 0

2 years ago

The tall woman was a (professional) athlete who always (laughed) during scary movies. choose the two antonyms for the (bracketed

TEA [102]

The tall woman was an amateur athlete who always cried during scary movies. Antonyms are words which mean the opposite of the bracketed word, and so amateur is the opposite of professional and cried is the opposite of laughed.

4 0

2 years ago

Choose the list that presents the four stages of food processing in the order in which they naturally occur. see concept 41.2

GaryK [48]

Https://quizlet.com/57661309/chapter-41-flash-cards/?i=1ducf4&x=1jqY

5 0

3 years ago