Biology 1404 Study guides, Class notes & Summaries

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? -Mitosis - -When does embryonic happen? -Mitosis - -When does development occur? -Mitosis - -When does tissue turnover (renewal) occur? -Meiosis - -When does reproduction occur? -Germ...

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 of the following: A. Promoter B. Genes C. Regulatory gene - -A & B: A promotor and genes -What is a protein produced by a regulatory gene? - -A repressor -For a repressible operon to be trans...

the white allele is recessive - -white flowering plants were not observed in the F1 generation following a cross of true breeding purple and white flowering plants in Mendels monohybrid cross experiment because -dipliod - -human somatic cells are -16 - -given 4 different charateristics assuming independent assortment how many different types of gamestes are possible -on the same chromosome - -if two genes are linked they are -dividing white blood cells - -which cell would be best to ...

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 mRNA -Ribsosomes - -the sites of translation -Translation in prokaryotes - -translation of mRNA can begin before transcription has finished (coupled) -Transcription in eukaryotes - -transcripti...

CH4- Cell Structure CH4- Cell Structure 4.1  A cell is the smallest unit of a living thing.  Several cells of one kind that interconnect with each other and perform a shared function form tissues These tissues combine to form an organ (your stomach, heart, or brain), and several organs comprise an organ system (such as the digestive system, circulatory system, or nervous system). Several systems that function together form an organism (like a human being). Here, we will examine t...

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 from RNA. -Which subunit of the E. coli polymerase confers specificity to transcription? - -σ -The -10 and -35 regions of prokaryotic promoters are called consensus sequences because ________. ...

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 new nuclear envelope is a characteristic of which stage of mitosis? - -telophase -Activated steroid hormone receptors are also - -transcription factors -Which of the following chemical signaling ...

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 the ___ is ___ start of ___. it runs in ___ ___, small __ ___. - -translation - Christmas tree - tip - RNA's - transcription - one direction - to big -the ___ starts ___. it is a ___ ___ & is __ bp ...

Allele - -gene variations that arise by mutation and exist at the same relative locations on homologous chromosomes -Autosomes - -Any of the non-sex chromosomes -Blending Theory of Inheritance - -hypothetical inheritance pattern in which parental traits are blended together in the offspring to produce an intermediate physical appearance -Codominance - -in a heterozygote, complete and simultaneous expression of both alleles for the same characteristic -continuous variation - -inherita...

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 mRNA -Ribsosomes - -the sites of translation -Translation in prokaryotes - -translation of mRNA can begin before transcription has finished (coupled) -Transcription in eukaryotes - -transcripti...