Biology 1404 2023 - Study guides, Class notes & Summaries

Biology 1404 Practice Questions for Test 3 | Questions and 100% Correct Answers | Graded A+ 1. Which structure should the fungus use to extract nutrition from the phloem cells? A) rhizoids (B) haustoria (C) arbuscules (D) sporangiophores (E) stolons 2. Which of the following describes the protist phyla? (select all that apply) o Polyphyletic o Eukaryotic o They are only multicellular o They lack membrane bound organelles o They are Archaea 3. In general, all members of Kingdom Animalia ...

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 ...

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 and shell 4 has one electron -Which type of bond represents a weak chemical bond - -hydrogen bond -Which of the following statements is not true - -Water is the most abundant molecule in the Earth...

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...

Define Evolution - -the process by which modern organisms have descended from ancient ones -What is a theory - -a well tested explanation of a natural phenomena -How are theories developed? - -theories are developed by frequent testings of hypotheses -Who established the Theory of Evolution by Natural Selection? - -Charles Darwin -What was the name of the book he published? - -The Origin of Species -What island is famous for its relationship to the theory? - -the Galapagos Islands...

One possible results of chromosomal breakage is for a fragment to join a non-homologous chromosome. What is this alteration called? - -A translocation -Which of the following is true of linkage? - -The closer two genes are on a chromosome, the lower the probability that a crossover will occur between them -The chromosomal theory of inheritance explains what? - -Mendel's laws of segregation and independent assortment -If a deletion occurs on the Y chromosome that removes the SRY gene in...

what is a basic method of extration of DNA? - -1. cells are lysed using a detergent that disrupts plasma membrane 2. cells are treated with protease to destroy protein and RNAase to destroy RNA 3. cells are put in a centrifuge and the supernantant liquid is transferred to a clean tube 4. the DNA is precipitated with ethanol, it forms viscous strands -what is restriction endonucleases? what are they key to?what are Palindromes? - -a defense system for bacteria, it recognizes and cleave a sp...

1.Darwin referred to the process of promoting certain traits by breeding members with those traits as ____. The breeding of plants and animals to produce desirable traits. Organisms with the desired traits, such as size or taste, are artificially mated or cross-pollinated with organisms with similar desired traits. - -artificial selection -2.A morphological adaptation in which one species resembles another is called ____. - -Mimicry -3.Population decline causes an extreme genetic dr...

One possible results of chromosomal breakage is for a fragment to join a non-homologous chromosome. What is this alteration called? - -A translocation -Which of the following is true of linkage? - -The closer two genes are on a chromosome, the lower the probability that a crossover will occur between them -The chromosomal theory of inheritance explains what? - -Mendel's laws of segregation and independent assortment -If a deletion occurs on the Y chromosome that removes the SRY gene in...