An actin gene in humans is 92% identical to the homologous actin gene in mice. An actin gene in humans is 80% identical to the homologous gene in yeast. What does this say about how long ago these organisms had a common ancestor?

An actin gene in humans is 92% identical to the homologous actin gene in mice. An actin gene in humans is 80% identical to the homologous gene in yeast. What does this say about how long ago these organisms had a common ancestor?

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter1: Invitation To Biology

Section: Chapter Questions

Problem 5CT: In 2005, researcher Woo-suk Hwang reported that he had made immortal stem cells from human patients....

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1. This exercise is based on Figure 5.20B: The Role of Microfilaments in Cell Movement-Showing_Cause and Effect in Biology. Review the information below arih ir t:· that iuiiows. To investigate the relationship between a biological activity and the proposed cause of the activity, biologists often use inhibitors that are specific for the cause in living cells or organisms. Cytochalasin B, an inhibitor of microfilaments, was applied to white blood cells that are usually observed by microscopy to move. In separate experiments, three other inhibitors were used: colchicine, which inhibits microtubules; dinitrophenol, which inhibits ATP production (energy); and puromycin, which inhibits new protein synthesis. The results are shown in the table. Explain the reasoning and results of each experiment. What can you conclude about white blood cells movements and the cytoskeleton? Cell movement (% cells moving) Condition No inhibitor 96 Cytochalasin B Colchicine 92 Dinitrophenol Puromycin 95
Eukaryotic and prokaryotic ribosomes are similar in that: a. both contain a small subunit, but only eukaryotes contain a large subunit. b. both contain the same number of proteins. c. both use mRNA to assemble amino acids into proteins. d. both contain the same number of types of rRNA. e. both produce proteins that can pass through pores into the nucleus.
Watch this video (http://openstaxcollege.org/l/ribosome) to learn about ribosomes. The ribosome binds to the mRNA molecule to start translation of its code into a protein. What happens to the small and large ribosomal subunits at the end of translation?
One of the primary symtoms of Covid 19 is fatigue. This is due to a lack of oxygen from your lungs reaching cells and making energy. Which organelle is affected by the lack of oxygen needed to make energy for the cell?
Borro. B6 Pear. O Mail.. M Myo. Dayf... A ALEK. Y Ellucian.. A session.masteringbiology.com S HW 6 of 8 of an Animal Cell: Structures and Functions (BioFlix tutorial) ne cell is the basic structural and functional unit of all organisms. To understand how an organism works, you must first understand how its cells are structured nd the roles that each structure performs in the cell. Before beginning this tutorial, watch the Tour of an Animal Cell animation to learn about the general structure of an animal cell. Although animals are made up of nany different cell types (for example, nerve cells, blood cells, muscle cells), all of the cells share many basic similarities with the cell shown in the animation. Part A - Animal cell structures and functions To understand how cells function as the fundamental unit of life, you must first become familiar with the individual roles of th& cellular structures and organelles. Drag the labels on the left onto the diagram of the animal cell to…
Since prokaryotes don't have microtubules, how does intracellular movement occur? For an example, how do proteins move to their designaed area within a prokaryote? Also, since they do not have a golgi apparatus, how are proteins processed and distrubuted thorughout the cell? Is the DNA different in prokaryotes that give it different instructions than what you would see in eukaryotes? Please help me understand this a bit more. Thank you. I'm not sure why Bartlby is saying my question looks like a graded assignment question. I guess I sound too professional lol
9A. Matching cell structures their functionsiutocues) Answer Structures Function Centrioles 1. Composed of proteins and rRNAs Cytosol 2. Region in prokaryotes contains a chromosome Golgi complex 3. ring of nine outer microtubule doublets (9+2 axoneme) Plasma membrane 4. Support the cell and protect against plasmolysis Ribosome 5. Composed of glycoprotein(s) and involved in transferring material into or out of the cell Transporters 6. contain hydrolytic enzymes and involved in autophagy Receptor 7. Composed of microtubules and sweep mucus out of respiratory tract Peroxisome 8. Controls which material can get in or out of the cell Nucleoid 9. Contains chromosomes and has nuclear envelope Cilia 10. Maintain membrane fluidity 11. contains necessary enzymes for that modify, sort, and package of proteins or lipids for extracellular or intracellular use 12. Fluids baths between organelles 13. Is a ligand-binding site and can receive specific signals from out of the cell 14. Contains catalase…
O e. A Mode of cell division in fungi Time ſeft 1:37: CLEAR MY CHOICE Bacteriophages can recognize the host cell by: O a. Binding of a viral protein to a receptor on the bacteria cell using the lock and key fit O b. Viral envelop that fuses with the plasma membrane of a bacterial cell O c. Binding of the viral receptor to a protein on a bacteria cell using the lock and key fit O d. Glycoprotein that recognizes a specific protein on a bacterial cell e. Glycoproteins that help the virus to bind to a receptor protein on a bacterial cell All nucleic acids are: O a. Contain deoxyribose O b. Polymers of nucleotides
EVOLUTION CONNECTION Some bacteria may be able torespond to environmental stress by increasing the rate atwhich mutations occur during cell division. How might this beaccomplished? Might there be an evolutionary advantageto this ability? Explain.
Which of the following sequences correctly lists in orderthe steps involved in the incorporation of aproteinaceous molecule within a cell?a. protein synthesis of the protein on the ribosome;modification in the Golgi apparatus; packaging inthe endoplasmic reticulum; tagging in the vesicleb. synthesis of the protein on the lysosome; tagging inthe Golgi; packaging in the vesicle; distribution inthe endoplasmic reticulumc. synthesis of the protein on the ribosome;modification in the endoplasmic reticulum; taggingin the Golgi; distribution via the vesicled. synthesis of the protein on the lysosome; packagingin the vesicle; distribution via the Golgi; tagging inthe endoplasmic reticulum
b) The dingram ahows some other cells. Size of image E magnitica tion s mm/e 35 mm. asmm 100OX. i) Give three features of theses cells which show that they were part of a plant. ii) Make a drawing of cell X. Your drawing must be four times larger than cells X in the diagram. 2. Which of the following is not part of an animal cell? Nucleus Cell membrane Cytoplasm Cellulose cell wall 3. One difference between green plants and animals is that green plants have Chloroplasts Cytoplasm Nucleus Cell membrane
A crime has occurred, and you are asked to help solve it. A forensics detective brings you a sample from the crime scene of what they believe is the suspect's DNA and asks you for chemical analy Your study of this sample reveals the presence of adenine, thymine, ribose, and uracil, leading you to conclude that the sample is A pure DNA probably a mixture of DNA and RNA C pure RNA probably a mixture of rRNA and mRNA MAR 12 tv MacBook Air DII DD esc F6 F7 F8 F9 F10 F1 F1 F2 F3 F4 F5 &