The types of amino acid r groups will line the channel protein interior would be non-polar.
On the interior side of the system, there are non-polar amino acids that can form bonds with the hydrophobic tails of phospholipids inside cell membrane structures. By using the phenomenon of passive diffusion, they perform the fundamental task of moving materials across the membrane. The amino acid glycine contains an R group, as is the case. Valine, methionine, and alanine are a few of the non-polar amino acids, as are others.
Amino groups are more prevalent than carboxylic groups in polar amino acids with a positive charge. A more basic amino acid then results. On the "R" group of these amino acids, there is a positive charge. Lysine, arginine, and histidine are some examples of compounds that fall under this category.
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For the first question, the answer is Klinefelter Syndrome. (From what I understood, this is the type of answer I should give?) Karyotype is size order display of chromosomes.
For the second question, the answer is nondisjunction. ("<span>the failure of homologous chromosomes or sister chromatids to separate properly during cell division.")</span>
Answer:
The region where the embryoblast contacts the trophoblast is called the embryonic pole. ... Just before implantation, the cells in the embryoblast start to differentiate into two layers - the epiblast (primary ectoderm), and an internal layer of cuboidal cells called the hypoblast (or primary endoderm).
Question:All known organisms use genetic information to produce protein molecules via the same genetic code. This finding strongly supports the hypothesis that __________.
a) the earliest macromolecules probably arose when lightning struck an oxygen-free atmosphere
b) all organisms are descended from one or a few common ancestors
c) the genetic code readily evolves by natural selection
d) there's only one possible way to encode information in a macromolecule
Answer:
b) all organisms are descended from one or a few common ancestors
Explanation:
Protein synthesis occurs when the nucleotide sequence of the mRNA is read in the form of genetic codes. A specific genetic code specifies the same amino acid in all living beings. For example, the code "UUU" codes for phenylalanine in all the living beings irrespective of their species. This suggests that all the life forms have originated from one or few common ancestors and the genetic code has been preserved during the course of evolution of various species.
Answer and Explanation:
12. The water has a lower osmotic pressure than the cell sap of the root hairs. Due to the osmotic difference water is drawn by osmosis across the cell wall and cell membrane into root hairs. Water moves by osmosis into adjacent cortex cells and their osmotic pressure is lowered drawing water by osmosis. Water passes to the successive cortex cells and through the endodermis to the xylem vessels. At the leaves, the xylem passes into the petiole and then into the veins of the leaf. Water leaves the veins and enters the cells of the spongy and palisade layers.
13. Food and other manufactured material are translocated by the phloem. They enter the sieve elements through plasmodesmata connecting them to adjacent companion cells which are sites of high metabolic activity. The manufactured food are translocated through sieve tube along the cytoplasmic strands.