Answer:
C
Explanation:
Hydrophobic interactions are the result of strong attractions between nonpolar regions and are crucial in biological phenomenon such as protein folding and cell membrane structure. The correct option is D.
Hydrophobic interactions often occur between nonpolar molecules or groups. The correct statement among those provided is D: hydrophobic interactions are the result of strong attractions between nonpolar regions.
These interactions do not require the presence of surrounding water molecules, nor do they result from maximizing contact with water. Instead, nonpolar molecules or groups tend to gather together, or aggregate, to minimize their exposure to water or any other polar substances.
This is because there is a natural repulsion between polar and nonpolar substances. Thus, hydrophobic interactions are critical for the folding and stability of proteins, cell membrane structure, and many other biological phenomena. The correct option is D.
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What are the current U.S. laws regarding embryonic stem cells? In your
opinion, should scientists continue research with stem cells, or if you had a
disease and would benefit from the stem cell therapies, would you want
scientists to continue their research?
Answer:
They should not continue with research of stem cells
Explanation:
Answer:
The cells need water to maintain their metabolic functions, the way water enters through cells membranes is by osmosis.
Explanation:
The cell membrane is a lipidic bilayer composed of phospholipids and embedded proteins. Phospholipids have the characteristic of being amphiphilic which means that possess hydrophilic and lipophilic characteristics. The most common way is by osmosis, that is a mechanism that moves water from high concentration to less concentration of water. In the cell membrane, there are is channels of proteins called aquaporins that facilitate the pass of water through the membrane. Also, as water is a very small molecule without charge, this characteristic allows passing a limit amount of water molecules through the hydrophilic characteristic of membranes.
B. The two-dimensional structure of tRNAs exhibits a cloverleaf pattern.
C. tRNAs are produced in the nucleus.
D. functional tRNAs have been spliced by splicesomes.
E. tRNAs possess an anticodon complementary to the codon.
Answer:
D. functional tRNAs have been spliced by splicesomes.
Explanation:
Functional tRNAs are not spliced by splicesomes, they are trimmed with the help of RNAases instead.
In all tRNAs, RNAase P cuts at 5'end so as to produce a monophosphate because a phosphodiester bond consists of only one phosphate and 2 sugar molecules.
After that 3'end processing occurs in which RNAase II and RNAase D remove extra nucleotide sequences at 3' end. CCA is added at 3' end later on with the help of enzyme named as tRNA nucleotidyltransferase.
So, there is no role of splicesomes only RNAases and other enzymes are involved in tRNA processing.
The false statement about tRNA is that functional tRNAs have been spliced by spliceosomes. tRNA processing involves cleavage and modification, but not with spliceosomes, and this occurs before tRNAs are active in the cytoplasm for protein synthesis. So the correct option is D.
The correct answer to the question "Which of the following statements about tRNA is FALSE?" is D. Functional tRNAs have been spliced by spliceosomes. This statement is false because tRNA processing does not involve spliceosomes, which are specific to mRNA splicing. It is essential to note that, unlike mRNA, tRNA and rRNA are not translated but are involved in protein synthesis in other roles. In eukaryotes, tRNAs are transcribed and processed in the nucleus, but they undergo further processing that includes splicing, methylation, and sometimes nucleotide modification but not by spliceosomes. Following the processing, tRNAs are then exported to the cytoplasm.
tRNA molecules are typically depicted in a two-dimensional cloverleaf pattern, but in three dimensions, they adopt an L-like shape. The molecule is folded due to intramolecular base pairing, creating a structure with an anticodon at one end and an amino acid binding site at the other. Importantly, the anticodon of a tRNA is complementary to the mRNA codon, enabling the tRNA to bring the correct amino acid to the growing polypeptide chain during protein synthesis.
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Answer:
archipelago Is the correct answer I am guessing you are in 5th grade like me I do calvert academy and correct answer is archipelago!
Explanation:
Answer:
u mean 6th grade thts what im in
Explanation:
B. Responsiveness to the Environment
C. Growth and Change
D. Maintain Homeostasis
Answer:
it may be a or d but b and c are a characteristic in life
convection, conduction and radiation is the correct answer because heat flows from hot to cold. The heat flows from hot objects to cold objects whether the heat transfer is occurring by convection, conduction, or radiation. Heat flows from warmer substances to cooler substances until they reach the same temperature.