Answer:
The two thyroid hormones that affect the metabolic rate are thyroxine and triiodothyronine.
Explanation:
The thyroid gland is an endocrine gland, which is present below the Adam's apple, in the neck. The thyroid gland secretes two thyroid hormones and calcitonin.
The thyroid hormones, produced and secreted by the thyroid gland, influence the synthesis of proteins, metabolic rate and development. The two thyroid hormones are thyroxine and triiodothyronine.
Hydrophobic effect is the tendency of non polar molecules (hydrophobic) in a solvent that is polar to interact with each other resulting to a hydrophobic interaction. These non polar molecules are called hydrophobes and are made of long chains of carbon that are water hating (do not interact with water). In this case,the hydrophobic interactions are most likely to occur on the core of a water soluble protein.
Answer:
Option A, the code is triplet
Explanation:
Complete question
When scientists were attempting to determine the structure of the genetic code, Crick and coworkers found that when three base additions or three base deletions occurred in a single gene, the wild-type phenotype was sometimes restored. These data supported the hypothesis that ________.
A) the code is triplet
B) the code contains internal punctuation
C) AUG is the initiating triplet
D) the code is overlapping
E) there are three amino acids per base
Solution
The team of Francis Crick was the first one to determine the length of the codon in 1961 by using a T4 bacteriophage. Through an assay, they devised the properties of genetic code and introduced frame shift mutation. So during the initial stage of experiment, only one single frame shift was introduced with in the viral protein of E. coli bacteria thereby making the protein nonfunctional. They then introduced an additional frame shift to restore the protein structure so that its function could be restored. This experiment was successful and concluded with a finding that genetic code is based on multiple of three bases
Answer:
John Stephen Jones states that in evolution it is necessary to have into account three factors: natural selection, mutation, and random variation.
Explanation:
These three mechanisms influence evolution and they are responsible for generating phenotypic diversity that is observed in humans.
I recommend to read his article (chapter book):
Jones, JS. (2012). Is Human Evolution Over?. In Evolution 2.0 (pp. 167-176). Springer, Berlin, Heidelberg.
Answer:
It increases for most species.
