Homework Answers
Question 24.
Answer- Their ribosome is a 70S form that is found in all bacteria.
Mitochondria is a double membrane-bound organelle, which is semi-autonomous in nature. Mitochondria has its own DNA. Like mitochondria, chloroplasts also possess their own DNA, double membrane and 70S ribosome.
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24. Of all the evidence that the mitochondria of eukaryotic cells is derived from endosymbiosis which...
5. Mitochondria and chloroplasts were once free-living bacteria that later migrated into eukaryotic cells. Mitochondria...
5. Mitochondria and chloroplasts were once free-living bacteria that later migrated into eukaryotic cells. Mitochondria make energy while chloroplasts prepare their own food. a) If Gregor Mendel were a molecular biologist and laid his hands on a free-living mitochondrion, would he have got his 3:1 ratio crossing two mitochondria? b) In its free-living condition, can a chloroplast code for proteins, and if yes, what are the two most important enzymes that aid in its survival? c) After endosymbiosis, what happenned...
How is compartmentalization achieved in eukaryotic cells? Select one: a. Primarily by membrane-bound structures O b....
How is compartmentalization achieved in eukaryotic cells? Select one: a. Primarily by membrane-bound structures O b. Primarily by endosymbiosis O c. Primarily by cellular structures surrounded by protein O d. Primarily be the cytoskeleton, which divides the cell into different domains for different functions. A mutation to DNA polymerase III that eliminated the 3'-to-5' exonuclease activity would prevent: Select one: O a. removal of the RNA primer. O b.removal of base mismatches. O c. addition of dNTPs to a region...
please answer ASAP 1) Which of the following is not a common bacterial shape? A) spirochote...
please answer ASAP
1) Which of the following is not a common bacterial shape? A) spirochote B.COCCIES Cdise Dj bacillas 2) The shape of a bacterial cell is determined and maintained by the A) cell membrane B) cell wall C) capsule D) slime laver 3) Which bacterial genus normally lacks a cell wall? A) Mycobacterium B) Streptococcus C) Mycoplasma D) Bacillus 4) Cell membranes are composed primarily of A) phospholipids and sugars B) teicoic acid and proteins C) phospholipids and...
Based on your knowledge about eukaryotic evolution, all of these statements about the evolution of mitochondria...
Based on your knowledge about eukaryotic evolution, all of these statements about the evolution of mitochondria are false EXCEPT: Select one: a. Mitochondria contain genetic information in membrane bound organelles. * b. The evolution of mitochondria occured after the evolution of chloroplasts. O c. Mitochondria have fewer genes than bacteria, and have lost many the gene functions that are necessary for independent life. d. Mitochondria contain all the genes to code for the proteins they require to function and are...
choose the right answer : 1- what is degradation of ' unwanted' proteins in eukaryotic cells...
choose the right answer : 1- what is degradation of ' unwanted' proteins in eukaryotic cells A- polyribosomes B- proteasomes C- editosome D- spliceosomes 2- addition or deletion of bases causes which kind of mutation A- transition B- transcription C- transversion D- frameshift mutation 3- point mutation involve : A- change in single base pair B- deletion C- duplication D- insertion 4- what is the complementary m-RNA sequence for the DNA sequence C-A-A-G-G-T A- C-A-A-G-G-U B- G-U-U-C-C-A C- C-A-A-G-G-T D-...
1a.The mitochondria of eukaryotic cells likely evolved from bacteria because they share genetic similarity to...
1a.The mitochondria of eukaryotic cells likely evolved from bacteria because they share genetic similarity to proteobacteria they have undergone rapid mutagenesis they show signs of horizontal gene transfer they exhibit a similar structural composition 1b.What technique can be used to assess the phylogeny of most bacterial species? Cultivation in the laboratory b) Microscopy and physiology c) 16s and genome sequencing d) Environmental growth conditions Cultivation in the laboratory Microscopy and physiology...
Question 78 Which of the following statements about the cytoskeleton is TRUE? All eukaryotic cells have...
Question 78 Which of the following statements about the cytoskeleton is TRUE? All eukaryotic cells have actin, microtubules, and intermediate filaments in their cytoplasm The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell. The three cytoskeletal filaments perform distinct tasks in the cell and act completely independently of one another Actin filaments and microtubules have an inherent polarity, with a plus end that grows more quickly than the minus end С. D Question 79...
1. Which of the following are principles of cell theory? A. All living things are composed...
1. Which of the following are principles of cell theory? A. All living things are composed of one or more cells. B. Cells are the smallest unit of living organisms. C. New cells come only from pre-existing cells by cell division. D. Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division. E. All living organisms are composed of one or more cells, cells are the smallest unit of living organisms, and...
Which is the most inappropriate description of a ribosome? Select one: a. It consists of proteins...
Which is the most inappropriate description of a ribosome? Select one: a. It consists of proteins and rRNAs. b. It has pockets for at three tRNA bindings. c. For initiation, the 30S subunit binds to mRNA before the 50S subunit binds. d. For its translational function, ribosome needs other protein factors. e. Ribosomes carry out translation at consumption of the energy from ATP.
1. Prokaryotes lack some parts found in eukaryotic cells, including which item? a. a nuclear membrane...
1. Prokaryotes lack some parts found in eukaryotic cells, including which item? a. a nuclear membrane b. DNA c. one or more chromosomes d. a plasma membrane e. all of the above 2. Which of the following statements best describes most bacteria? a) They are generally harmful. b) They are limited to living in a few habitats. c) They are very common in the environment. d) They are responsible for the common cold." 3. Which statement about biofilms would lose...
How is compartmentalization achieved in eukaryotic cells? Select one: a. Primarily by membrane-bound structures O b. Primarily by endosymbiosis O c. Primarily by cellular structures surrounded by protein O d. Primarily be the cytoskeleton, which divides the cell into different domains for different functions. A mutation to DNA polymerase III that eliminated the 3'-to-5' exonuclease activity would prevent: Select one: O a. removal of the RNA primer. O b.removal of base mismatches. O c. addition of dNTPs to a region...
please answer ASAP
1) Which of the following is not a common bacterial shape? A) spirochote B.COCCIES Cdise Dj bacillas 2) The shape of a bacterial cell is determined and maintained by the A) cell membrane B) cell wall C) capsule D) slime laver 3) Which bacterial genus normally lacks a cell wall? A) Mycobacterium B) Streptococcus C) Mycoplasma D) Bacillus 4) Cell membranes are composed primarily of A) phospholipids and sugars B) teicoic acid and proteins C) phospholipids and...
Based on your knowledge about eukaryotic evolution, all of these statements about the evolution of mitochondria are false EXCEPT: Select one: a. Mitochondria contain genetic information in membrane bound organelles. * b. The evolution of mitochondria occured after the evolution of chloroplasts. O c. Mitochondria have fewer genes than bacteria, and have lost many the gene functions that are necessary for independent life. d. Mitochondria contain all the genes to code for the proteins they require to function and are...
Question 78 Which of the following statements about the cytoskeleton is TRUE? All eukaryotic cells have actin, microtubules, and intermediate filaments in their cytoplasm The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell. The three cytoskeletal filaments perform distinct tasks in the cell and act completely independently of one another Actin filaments and microtubules have an inherent polarity, with a plus end that grows more quickly than the minus end С. D Question 79...
1. Which of the following are principles of cell theory? A. All living things are composed of one or more cells. B. Cells are the smallest unit of living organisms. C. New cells come only from pre-existing cells by cell division. D. Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division. E. All living organisms are composed of one or more cells, cells are the smallest unit of living organisms, and...
1. Prokaryotes lack some parts found in eukaryotic cells, including which item? a. a nuclear membrane b. DNA c. one or more chromosomes d. a plasma membrane e. all of the above 2. Which of the following statements best describes most bacteria? a) They are generally harmful. b) They are limited to living in a few habitats. c) They are very common in the environment. d) They are responsible for the common cold." 3. Which statement about biofilms would lose...
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