Biology 1404 Exam Chapter 15-17,21 Review (Distinction Level)Questions and Answers 2023

The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this? - -degeneracy -How many nucleotides are in 12 mRNA codons? - -36 -Which event contradicts the central dogma of molecular biology? - -Scientists use reverse transcriptase enzymes to make DNA ...

Which of the following can regulate protein expression in a cell? A. mRNA degredation B. Protein degredation C. RNA processing - -All of the above -Alternative RNA splicing allows for: - -Different mRNA molecules are produced from the same primary transcript -An operon may consist of which ...

what's the central dogma of genes&proteins? what's an exception to this rule? - -DNA (transcription) - RNA (translation) - protein. reverse transcription. -in ___, the ___ sequence turned to ___ sequence *(_-_) - -transcription - DNA - RNA - T-U -in ___, the "___ ___" stru happens where th...

what's the central dogma of genes&proteins? what's an exception to this rule? - -DNA (transcription) - RNA (translation) - protein. reverse transcription. -in ___, the ___ sequence turned to ___ sequence *(_-_) - -transcription - DNA - RNA - T-U -in ___, the "___ ___" stru happens where th...

Gene expression - -The process by which DNA directs protein synthesis and has two stages - transcription - translation -Transcription - -the synthesis of RNA using information in DNA - produces messenger RNA (mRNA) -Translation - -the synthesis of a polypeptide using information in the mR...

A nucleosome is formed by - -the winding of DNA around histone proteins -Fertilization results in - -a zygote, a diploid cell, and a cell with new genetic combinations -Adenylyl cyclase uses ___ as a substrate to synthesize ___ - -ATP; cAMP -Unpacking of chromosomes and the formation of a n...

If xenon has an atomic number of 54 and a mass number of 108, how many neutrons does it have? - -54 -Atoms that vary in the number of neutrons found in their nuclei are called - -isotopes -Potassium has an atomic number of 19. What is its electron configuration - -shells 1, 2 and 3 are full an...

vital for well- functioning organism - -Why is cell cycle important? -binary fission - -split cell in two to form daughter cells -homologous chromosomes - -have same trait or gene, gets one from mom and one from dad -diploid cells - -cells that have two of each type of chromosomes -autos...

acetyl CoA - -Is formed when pyruvate first enters into the mitochondria via active transport. -aerobic respiration - -Respiration that requires oxygen -anaerobic - -Process that does not require oxygen -anaerobic cellular respiration - -the process by which cells obtain energy from an ener...

entire organism - -In unicellular organisms, division of one cell reproduces the __________. -Cell division - -_________ enables multicellular eukaryotes to develop from a single cell and, once fully grown, to renew, repair, or replace cells as needed. -Mitosis - -When does tissue repair occur...