Biology 1404 answers - Study guides, Class notes & Summaries
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Biology 1404 Exam Chapter 15-17,21 Review Questions and Answers 2023
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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...
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Biology 1404 Exam Chapter 15-17,21 Review Questions and Answers 2023
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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...
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Biology 1404 Exam Chapter 15-17,21 Review [Level A+] Questions and Answers 2023
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-Homologus Isolation Fossils - -preserved remains of ancient organisms 
 
-Georgraphic Isolation - -Population of speices becomes seporated by a physical boreder (mountains, rivers, land, etc.) 
 
- -structures that have diffrent mature forms but develop from same embryonic tissue 
 
-Temporal - -Isolated by time (open flower in winter, open flower in spring) 
 
-James Hutton - -Geologist who said that the forces that shaped the Earth took place over long periods of time, so the Earth had to be ...
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Biology 1404 Final Exam Review Questions and Answers 2023
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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...
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BIO 1404 Practical 2 Molecular Biology 2023 with complete solution questions and answers
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what do biologist use to characterize and manipulate DNA molecules? how are sticky ends usefull in DNA fragments? 
restriction endonuclease;;;;; because DNA fragment from different sources but with the same complementary ends can be pasted together to form new hybrid molecules 
 
 
 
what is pBR322, that we used in lab? 
a plasmid which are small circular DNA molecule found in bacteria and yeast 
 
 
 
we did we do in lab to the pBR322 plasmid? 
we digested it in 3 different restriction enzymes ...
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BIOLOGY 1404 EXAM CHAPTER 4-7 EXAM #2 REVIEW.
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BIOLOGY 1404 EXAM CHAPTER 4-7 EXAM #2 REVIEW. 
BIO 1404 OPENSTAX CHAPTER 4-7 EXAM #2 REVIEW 
CH4 - Cell structure 
CH5 - Structure and function of plasma membranes 
CH6 - Metabolism 
CH7 - Cellular respiration 
CH4: Cell structure 
4.1 
 A cell is the smallest unit of living things 
 Levels of organization (simplest to complex): cells, tissues, organ, organ system, 
organism 
 Cells are split into 2 categories: prokaryotic and eukaryotic 
 Bacteria and archaea are PROKARYOTIC 
 Both animal and p...
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Biology 1404 Final Exam Review Best Questions and Answers
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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...
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Biology 1404 Exam Chapter 15-17,21 Review (Distinction Level)Questions and Answers 2023
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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...
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Biology 1404 Exam Chapter 15-17, 21 Review Questions and Answers 2023
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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...
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