Biology 1404 - Study guides, Class notes & Summaries

Allelopathy - -The idea that plants can chemically influence each other -Thomas Chamberlin - -Danger of love, makes it easy to ignore competing facts if too attached to one idea -Frits Wents & James Bonner - -Cal tech scientists came up with allelopathy -Cornelius Muller - -Agreed with allelopathy. Hid results that disagreed with allelopathy, never published data on rabits -Bruce Bartholomew - -Sets up a paper about cows causing zones of no growth and believed allelopathy wasn't tru...

main goal of this chapter - --Explain the "central dogma" of DNA-protein synthesis -Describe the genetic code and how the nucleotide sequence prescribes the amino acid and the protein sequence -The cellular process of _____ generates messenger RNA (mRNA) - -transcription -messenger RNA (mRNA) - -A type of RNA, synthesized from DNA and attached to ribosomes in the cytoplasm; it specifies the primary structure of a protein. -a mobile molecular copy of one or more genes with an alphabet o...

Most likely, mitochondria and chloroplast evolved from: - -Bacteria -What three overlapping processes are involved in development? - -Growth, morphogenesis and differentiation ------ is a type of ground tissue composed of cells having tick, often lignified secondary cell walls. - -Sclerenchyma -A mature sieve element does NOT normally have: - -A nucleus -The function of companion cells is thought to be: - -Delivery of substances to sieve-tube elements -Trichomes are: - -Appendages...

matter - -anything that takes up space and has mass -elements - -any substance that cannot be broken down into simpler substances -atom - -the basic smallest unit of a matter that has all the chemical properties of an element -proton - -A positively charged particle that is part of an atom's nucleus. -neutron - -A small particle in the nucleus of the atom, with no electrical charge -electrons - -Negatively charged subatomic particles found in various energy levels (orbital shells...

What features are common to all living organisms? - -enclosed by a membrane presence of cytoplasm presence of DNA presence of ribosomes -How do electrons behave when they absorb or lose energy? - -Electrons move to higher or lower shells by absorbing (higher) or releasing (lower) energy -What is a nonpolar covalent bond? - -The atoms share the electrons equally -What is a polar covalent bond? - -One atom is more electronegative, and the atoms do not share the electron equally (crea...

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...

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 ...

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 ...

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...

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...