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Uw Madison Bio 151 Exam 2 Questions And Answers

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11 pages

Written in 2024/2025

Grade A+

millyphilip

Biology 151 Final Exam Module 1-12 Practice| Questions with Answers Updated 2023

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39 pages

Written in 2022/2023

Grade A+

Excellentgrader

Biology 151 Final Exam Questions And Answers 2026 Verified.

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10 pages

Written in 2025/2026

Grade A+

Fyndlay

Biology 151 Final Exam Questions And Answers 2026 Verified.

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47 pages

Written in 2025/2026

Grade A+

Fyndlay

Which of the following statements best describes the mechanism by which the ced-9 protein in the nematode C. elegans prevents apoptosis in normal cells? - ANS Active Ced9 prevents activation of Ced3 A loss of function of Apaf1, the human equivalent of ced-4 in C. elegans, is most likely to result in which of the following? - ANS a form of cancer in which normal apoptosis fails As mentioned in the lecture, both excessive and insufficient apoptosis can cause problems. If scie...

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7 pages

Written in 2024/2025

Grade A+

DocLaura

Define osmosis and water potential. Explain how water potential is measured. - ANS Osmosis = diffusion of water through a selectively permeable membrane Water potential: a measurement that combines the effects of solute concentration and pressure. • Water potential determines the direction of movement of water. • Water flows from regions of higher water potential to regions of lower water potential. • Potential refers to water's capacity to perform work. Measured in mega...

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3 pages

Written in 2024/2025

Grade A+

DocLaura

Alternate splicing does which of the following - ANS Allows partly different proteins to be translated from a single transcript In analyzing the number of different bases in a single-stranded messenger RNA, which rule is correct A + U = G + C A + T = C + U None of the other answers are correct. A = G - ANS None of the other answers are correct The role of snRNA is to - ANS help splice out introns from DNA Why does DNA replication require the enzyme primase -...

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10 pages

Written in 2024/2025

Grade A+

DocLaura

Gene Expression - ANS controlling what proteins to make or skip Prokaryotic gene expression - ANS should we make mRNA or not(simple) Eukaryotic gene expression - ANS many steps to control; transcribe rna; exit nucleus; transport mRNA to ribosome; etc. Promoter - ANS specific nucleotides that are recognized and bound by proteins transcription factors - ANS Collection of proteins that mediate the binding of RNA polymerase and the initiation of tr...

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9 pages

Written in 2024/2025

Grade A+

DocLaura

natural selection - ANS A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits. cell doctrine - ANS All living things are composed of cells A single cell is the smallest unit that exhibits all of the characteristics of life All cells come only from preexisting cells primary protein sequence - ANS the linear sequence of amino acids nucleic acid sequence - ANS ...

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10 pages

Written in 2024/2025

Grade A+

DocLaura

Tetrahymena is a genus of free-living ciliates that are common in freshwater ponds. They are model organisms used to study a variety of cellular processes, including plasma membrane fluidity. Tetrahymena can maintain homeostasis by altering the fatty acid composition of their cellular membranes. You grow Tetrahymena in normal temperatures and then expose these Tetrahymena to cold temperatures. Which of the following changes in plasma membrane composition are likely to occur? I. An increase i...

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6 pages

Written in 2024/2025

Grade A+

DocLaura

1. Why are viruses referred to as obligate parasites? A. They cannot reproduce outside of a host cell. B. Viral DNA always inserts itself into host DNA. C. They invariably kill any cell they infect. D. They can incorporate nucleic acids from other viruses. E. They must use enzymes encoded by the virus itself. - ANS A 2. What is the name given to viruses that are single-stranded RNA that acts as a template for DNA synthesis? A. retroviruses B. proviruses C. viroids D. bacteri...

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9 pages

Written in 2024/2025

Grade A+

DocLaura

what happens in G1 - ANS growth of the cell what happens in G0 - ANS cell exits to this stage when it will not divide what happens in G2 - ANS checks DNA replication, finishes growing, protein replication and most amount of DNA what happens in S - ANS DNA replication what happens in M - ANS Division what is CDK - ANS cyclin dependent kinase used to regulate cell cycle what is cyclin - ANS protein. binds to CDK, helps regul...

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3 pages

Written in 2024/2025

Grade A+

DocLaura

light microscope (LM) - ANS Visibke light is passed through a speciman and then through glass lenses Magnification - ANS The ratio of an objects image size to its real size Resolution - ANS The measure of the clarity of the image, or the minimum distance of two distinguishable points Contrast - ANS Visible differences in brightness between parts of the sample electron microscope (EM) - ANS Used to study sub cellular structures Scanning elect...

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12 pages

Written in 2024/2025

Grade A+

DocLaura

General features of fungi - ANS -Heterotrophic -polysaccharide cell walls with chitin -external digestion -hyphae -some are unicellular (yeast) Hyphae - ANS each of the branching filaments that make up the mycelium of a fungus. Mycelium - ANS mass of hyphae Chytridiomycota - ANS -aquatic, flagellated fungi -sexual gametes and asexual spores are motile fungal asexual reproduction - ANS spores are formed through budding or mitosis; conidia o...

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12 pages

Written in 2024/2025

Grade A+

DocLaura

Traits aren't transmitted in inheritance, but rather genes are - ANS Mendel's Key Discovery particular combination of alleles present - ANS genotype The expression of the traits in the individual - ANS phenotype any cross of an unknown genotype with a homozygous recessive genotype - ANS testcross the phenotype of heterozygous genotype is intermediate between the homozygous genotypes - ANS incomplete dominance This states that segregati...

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7 pages

Written in 2024/2025

Grade A+

DocLaura

Operon - ANS the promotor and the repressor binding site. An operon is a group of genes that are transcribed together that are in the same pathway. Almost exclusively in prokaryotes transcription factor - ANS activators Activators - ANS a type of transcription factor, Activators can work synergistically, Activators bind to the enhancers and turn on genes, Activator is a protein, enhancer is DNA, Activator comes to bind to the enhancer and helps to unwind the DNA fro...

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7 pages

Written in 2024/2025

Grade A+

DocLaura

When a patient receives a transplant organ it must possess the same MHC markers as the patient's cells. If it does not the immune system will recognize it as foreign and attack the transplant organ. Which of the following membrane proteins is involved in organ rejection? - ANS identity Theoretically, because of the location of electron delivery in the ETC, each FADH2 produces ____ ATPs and each NADH produces _____ ATPs. - ANS 2,3 When coenzyme Q (a molecule in an electro...

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5 pages

Written in 2024/2025

Grade A+

DocLaura

Large numbers of ribosomes are present in cells that produce which of the following molecules? - ANS proteins What is an incorrect statement about the synthesis of polypeptides (proteins)? - ANS The synthesis of proteins is a catabolic process. What are constituents of the nucleus? - ANS Pores, envelope or membrane, chromosomes, chromatin Tissues that are metabolically active and utilize large amounts of energy would be rich in _____. - ANS mitochondria. ...

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6 pages

Written in 2024/2025

Grade A+

DocLaura

Alternate splicing does which of the following? - ANS Allows partly different proteins to be translated from a single transcript Why does DNA replication require the enzyme primate? - ANS Primase builds an RNA primer so that DNA polymerase has a free 3' end attach to nucleotides to. Which of the enzyme listed below cannot catalyze the formation or breakdown of phosphodiester linkages? - ANS Helicase Scientists have discovered how to put together a bacteriophag...

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4 pages

Written in 2024/2025

Grade A+

DocLaura

theory of natural selection - ANS Idea, first proposed by Charles Darwin, that species survive due to favorable characteristics cell doctrine - ANS 1. all living things are composed of cells and cell products 2. a single cell is the smallest unit that exhibits all the characteristics of life 3. all cells come only from preexisting cells protein primary sequence - ANS the sequence of amino acids linked by polypeptide bonds that go into determining a protein's fu...

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12 pages

Written in 2024/2025

Grade A+

DocLaura

For cell function, which type of macromolecule is responsible for carrying out the work (make up the structure and function of the cell)? - ANS protein For cell function, which type of macromolecule is responsible for carrying the information that codes for the molecules that carry out the work for that cell? - ANS DNA/nucleotides Explain the central dogma of biology. - ANS Each gene in the DNA molecule carries the information needed to construct one protein Defi...

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5 pages

Written in 2024/2025

Grade A+

DocLaura

Which of the following are purine nitrogenous bases? - ANS guanine and adenine If cells are grown in a medium containing radioactive 32P-labeled phosphate, which of these molecules will be labeled? - ANS nucleic acids What is the difference (if any) between the structure of ATP and the structure of the precursor of the A nucleotide in RNA? - ANS There is no difference. When nucleotides polymerize to form a nucleic acid ________. - ANS a covalent bond form...

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18 pages

Written in 2024/2025

Grade A+

DocLaura