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Lecture presented possible scenarios for the origin of the chemicals necessary for the evolution of early life on Earth. The 3 major hypotheses of the origins of life and cells are? correct answers 1 .Chemical Evolution 2. Astrobiological 3.Supreme Being (non-testable) Radioisotope dating using 235U decay indicates that the Earth is around______________________________old and that life originated between correct answers 4.0 and 4.5 billion years old life originated about 3.5 billion year...

living organisms capable of synthesizing all their need organic molecules using CO2 as its sole carbon sources are classified as? correct answers autotrophs the atmosphere inside the Miller and Urey volcano apparatus was described chemically as? correct answers a reducing atmosphere with little reactive oxygen molecules Robert Hazan's lab proposed that minerals might have played a role in allowing early primitive organic molecules to react with each other chemically forming more complex...

When the temperature of the outside air exceeds their internal body temp, jackrabbits living in hot, arid lands will respond homeostatically most likely by? correct answers dilating their blood vessels in their large ears to transfer more body heat to the environment Blood samples taken from an athlete who has been on a high-card diet for 24 hours might be expected to exhibit which of the following? correct answers high levels of insulin You wake up in the morning and measure your blood gl...

The two polynucleotide chains in DNA are held together primarily by H bonds between A and U as well as between G and T? a. True b. False correct answers B (DNA does not have Uracil, it has Cytosine) If there is 12% of A in a DNA molecule, then the % of G must be? a. 12% b. 30% c. 368 d. 76% e. none of these are correct correct answers E (A=T and C=G, A+G/T+C=1) The catalytic molecule responsible for making a peptide bond during translation (protein synthesis) in cells is? ...

Bacteria correct answers any of a group of microscopic organisms that are prokaryotic, i.e., that lack a membrane-bound nucleus and organelles. Bacteria are unicellular (one-celled) and may have spherical (coccus), rod-like (bacillus), or curved (vibrio, spirillum, or spirochete) bodies. Different bacteria inhabit virtually all environments, including soil, water, organic matter, and the bodies of eukaryotes (multicellular animals). Some bacteria are known to be beneficial to humans and the high...

The tertiary level of 3D protein structure is stabilized by a) ester bonds only b) hydrogen bonds only c) interaction with the molecular environment d) glycosidic bonds e) none of these is correct correct answers c) interaction with the molecular environment Which one of these chemical bonds is planar? a) C-C b) peptide bond c) glycosidic bond d) hydrogen bond e) ionic bond correct answers b) peptide bond in the figure the protein structure depicted by the letter D can be bes...

What are the 7 characteristics of life? correct answers 1. Contains Macros 2. Composed of cells 3. Reproduces 4. Use energy/raw materials 5. Respond to stimuli 6. Homeostasis 7. Adaptation/Evolution What does structure determine? correct answers structure determines function What are the 5 unifying themes of biology? correct answers 1. Organization 2. Information 3. Energy 4. Interactions 5. Evolution What are the levels of biology? correct answers atoms, molecules, organelles...

The energy released by the transfer of electrons through the Electron Transport Chain is used to generate a proton gradient in mitochondria by pumping H+ ions into which of the following cellular locations? a) nucleoplasm b) space between inner and outer mitochondrial membranes c) cytosol d) from the cytosol into the mitoplasm e) none of these is correct correct answers b) space between inner and outer mitochondrial membranes In addition to ATP, what are the end products of glycolysis?...

Magnification correct answers In microscopy, this is how much larger an object appears compared to its actual size Resolution correct answers In microscopy, this is the minimum distance between two points that can still be distinguished as two points light microscope (LM) correct answers In this type of microscope, visible light is passed through a specimen and then through glass lenses electron microscope (EM) correct answers In this type of microscope, a beam of electrons is passed th...

The genome (genetic material) of the SARs-CoV2 virus is composed of? Answers: S-protein (spike protein) DNA RNA a fatty lipid layer none of the above is correct choice correct answers Selected Answer: RNA Washing your hands in a Covid-19 pandemic is a good idea because the SARS-CoV2 virus contains? Answers: RNA a fatty-lipd layer DNA as its genetic material ribosomes choose this choice if none of the above is a corrrect choice correct answers Selected Answer: a fatty-lipd la...

Heredity correct answers the study of how the morphology and appearance of an organism is established by its genes & is influenced by the environment Mendelian Genetics correct answers qualitative observations of genetic functions discovered through experiments using flowering sweet pea plants to produce progeny via self pollination & cross pollination Law of Segregation (Mendelian) correct answers when gametes are formed, two particles of inheritance in an individual separate from each ot...

Physics correct answers The study of atomic particles of matter that interact y a relatively simple set of rules that may be distilled into predictive formulas. Chemistry correct answers a more complicated application of physics and its rules to molecules in a test tube Biology correct answers An even more complicated application of chemistry in a "special test tube" (a cell), which may run via predictive formulas Biology's rules are correct answers messy and infinite because m...

a new drug, Serostat, blocks the formation of MPF (mitotic promoting factor) in cultured HeLa cells. which of the following aspects of the reproduction of cells would most likely be disrupted by Serostat? correct answers phosphorylation of proteins initiating mitosis a particular cell has twice the amount of DNA as that in the diploid amount for this species. This particular cell is most likely? correct answers in G2 interphase the decrease in the amount of MPF activity at the end of mitos...

3 basic parts of cell correct answers membrane, nucleus, cytoplasm Most successful life form correct answers prokaryotes Extremophiles correct answers archaea bacteria that thrive in extreme conditions 3 Shapes of Eubacteria correct answers cocci, bacillus, spirochetes Cocci correct answers spherical Bacillus correct answers rod-shaped Spirochetes correct answers spiral GRAM Staining correct answers method for differential staining of bacteria Categorization of eubacteria...

4 Unifying themes of Biology correct answers cell theory, evolution, heredity, and bioenergetics Rudolph Virchow theory correct answers all cells arise from pre-existing cells Spontaneous Generation correct answers Francisco Redi; whole organisms could arise spontaneously or from inanimate matter Louis Pasteur correct answers air is full of bacteria; broth 1. store hereditary info 2. replicate hereditary info by templates polymerization 3. transcribe DNA into RNA 4. translate RNA ...

3 Unifying Concepts of Biology correct answers cell theory, evolution, bioenergetics Rudolph Virchow theory correct answers all cells arise from pre-existing cells Spontaneous Generation correct answers Francisco Redi; whole organisms could arise spontaneously or from inadamite matter Louis Pasteur correct answers air is full of bacteria; broth 1. store hereditary info 2. replicate hereditary info 3. transcribe DNA into RNA 4. translate RNA into protein 5. enzymes 6. require fre...

the type of isomers shown in the figure below are known as? correct answers structural isomers which of the physical properties of water is due to the presence of hydrogen bonds? correct answers choose this answer if all of the above properties are due to hydrogen bonds molecules are chemical compounds in which the molecules may be held together by? correct answers choose this answer if all of these are capable of holding atoms together within molecules which of the following chemical b...

which of the following organelles or structure is primarily involved in the synthesis of lipids, bile, and drug detoxification? correct answers smooth endoplasmic reticulum the Golgi apparatus has a polarity or sidedness to its structure and function. Which of the following statements correctly describes this polarity? correct answers all of the above correctly describe polar characteristics of the Golgi function hydrolytic enzymes must be segregated and packaged to prevent general destruc...

an RNA molecule that has catalytic activity? correct answers is a ribozyme living organisms capable of synthesizing all their need organic molecules using CO2 as its sole carbon sources are classified as? correct answers autotrophs the atmosphere inside the Miller and Urey volcanic apparatus was described chemically as? correct answers a reducing atmosphere with little reactive oxygen molecules ribosomes are a universally present organelle in all cells and are primarily composed of whic...