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:
The client traction weights are resting on the floor.
Explanation:
The immediate action of the nurse should be to reapply the weights to give traction to the fracture. The health care provider must be notified that the weights were lying on the floor, and the client should be realigned in bed. The client's blood pressure is slightly elevated; this could be related to pain and muscle spasms resulting from lack of pressure to reduce the fracture. Oozing of clear fluid is normal, as is the capillary refill time.
DIF: Applying/Application REF: 1060 KEY: Fracture| traction
MSC: Integrated Process: Communication and Documentation
NOT: Client Needs Category: Safe and Effective Care Environment: Management of Care
Answer;
-Large polar molecule are list likely to cross the phospholipid bilayer.
Explanation;
-A large polar molecule would be the least likely to passively diffuse through a plasma membrane without the help of a transport protein. Both its size and the hydrophobic interior of the membrane would restrict it.
-Only small uncharged molecules can diffuse freely through phospholipid bilayers. Small nonpolar molecules, such as O2 and CO2, are soluble in the lipid bilayer and therefore can readily cross cell membranes.
-Ions and large polar molecules cannot pass through the lipid bilayer. But more specifically, whether a molecule can pass through the membrane depends on its size and its electrical nature.
When the blending of traits occurs,<u><em> it is referred to as the principle of incomplete dominance.</em></u>
Poverty, chronic stress and susceptibility in children result in SIGNINFICANT HARDSHIP, POOR ACADEMIC PERFORMANCE AND CADRDIOVASCULAR DISEASES.
Poverty, chronic stress and diseases usually lead to psychological disorder in children. Most of the time, these disorders are neglected because children do not exhibit symptoms like that are exactly like those of adults going through similar conditions. Psychological disorders in children ultimately result in poor academic performance and other adverse effects.<span />
