Homework Answers
Following are the direct cellular outcomes possible in response to a molecular signal:
Activation of a gene
Synthesis of a new protein
cell proliferation
change in enzyme activity
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What direct cellular outcome (s) is/are possible in response to a molecular signal? Check all that...
Answer all questions Following graphs, the cellular response, as measured in real time by the concentration...
Answer all questions
Following graphs, the cellular response, as measured in real time by the concentration of a certain active effector protein, is plotted over time for five cell types (A to E) that are treated with three different concentrations of a signal molecule. During the time period indicated by the horizontal gray bar. the signal molecule is present in the culture media at a concentration of 1 nM (dotted curve), 5 nM (gray curve), or 25 nM (solid curve)....
14. You are studying a newly discovered growth factor. You find that this growth factor stimulates...
14. You are studying a newly discovered growth factor. You find that this growth factor stimulates the proliferation of cells grown in the laboratory. You have also found that the receptor that binds the growth factor is a receptor kinase that activates Ras, which activates the MAP kinase pathway. Which mutations affecting this growth factor pathway would you expect to promote uncontrolled cell proliferation? Select all that apply. A. a mutation that inactivates the phosphatase that dephosphorylates the activated receptor...
Need help on these questions ? 1.) Steroid hormones trigger transcription of target genes by... ...
Need help on these questions ? 1.) Steroid hormones trigger transcription of target genes by... a. activating the release of Ca+2 ions that bind to and activate transcription factors. b. activating a kinase cascade that results in the activation of a transcription factor for a set of genes. c. binding directly to DNA and stimulating transcription. d. binding to nuclear receptors that act as transcription factors for specific genes. 2.) Which type of cell-surface receptor(s), when...
l 1. What are the two molecular functions of M-cyclin with regard to the activation of M-Cak m-cyctin 2. Fill in the blanks: The pathway that is activated in response to DNA damage in G1 involves...
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1. What are the two molecular functions of M-cyclin with regard to the activation of M-Cak m-cyctin 2. Fill in the blanks: The pathway that is activated in response to DNA damage in G1 involves activation of which induces the complexes and inhibits them.ge,which encodes aprotein that binds to t's say a yeast temperature sensitive mutant has a mutation in the M cyclin gene which does not inactivate growth at the restrictive temperature (non-permissive temperature), resulting the M-cyclin protein...
Help with these bio questions please.Thank you 1 Secretory protein leave the cell by b Exoctossthey...
Help with these bio questions please.Thank you
1 Secretory protein leave the cell by b Exoctossthey remain in the cytoplasm c) pinocytosis d) receptor mediated 2 If proteins lack a c) Ras d) Signal-recognition particle b) Sorting signal 3 What purpose does the protein coat serve a) Capture molecules to remain in the cytosol b) Shapes the membrane into a phospholipid bilayer membrane c) Provides extra protection and support to the organelles d) none of these are correct cells response...
Easy questions, 30 min timed assignment, please answer ASAP thanks. The amino acid least likely to...
Easy questions, 30 min timed assignment, please answer ASAP thanks.
The amino acid least likely to be involved in nucleophilic a. Alanine. b. Asparagine. 1. and/or electrophilic enzyme catalysis is e. All are equally likely c. Aspartate. d. Arginine Fibrous proteins, such as collagen, have which one of the following properties? a. b. c. d. e. 2. highly soluble in water their hydrophilic residues are directed into the interior of the protein exhibits enzymatic activity serve structural roles in the...
Of: a) NA as the site s eukaryotic cells become more specialized, the nucleus is NOT important sy...
PLEASE ANSWER ALL
of: a) NA as the site s eukaryotic cells become more specialized, the nucleus is NOT important synthesis. b) Changes in the regulation of genes, c) DNA mutation, d) synthesis of mRNA, e) Golgi apparatus synthesis 4. Which of the following is associated with Co-enzyme A by the membrane of the mitochondrion for use in the Krebs cycle? a) proteins, b) amino acids, c) fatty acids, d) pyruvate e) glycogen 5. Which is NOT a characteristic of...
please answer all the questions Question 8 0 / 1 pts Our understanding of RNA ...
please answer all the questions
Question 8
0 / 1 pts
Our understanding of RNA
was non-existent until 2000
started with the identification of a tRNA which suggested a
method of converting DNA to protein
began to identify that DNA-->protein--> RNA
stopped growing after it's original discovery in the 70s
IncorrectQuestion 10
0 / 1 pts
Enzymes allow for chemical reactions to occur in the cell that
may not naturally occur at the right place at...
QUESTION 1 In E. coll, what two promoter regions are recognized by the s70 subunit? the...
QUESTION 1 In E. coll, what two promoter regions are recognized by the s70 subunit? the -10 and 35 regions the - 10 region and the Pribnow box the-10 and -70 regions the-35 and -70 regions QUESTION 2 Which protein must first bind to the origin of replication for DNA synthesis to begin? DNA polymerase DnaA helicase Single-strand binding protein Click Save and Submit to save and submit. Click Save All Answers to save all answers. 2 Ch 16 PPT...
explain 1 or 2 molecular details in how epigenetics may allow melanoma cells to outsmart BRAF inhibitors **This is for a genetics course Seope: This science commentary claims that epigeneties pl...
explain 1 or 2 molecular details in how epigenetics may allow
melanoma cells to outsmart BRAF inhibitors
**This is for a genetics course
Seope: This science commentary claims that epigeneties plays a role in cancer cells becoming therapy-resistant. The language used is generalized for the non-scientist and does not include any molecular details, such as methylation of a specific nucleotide in an allele or modification of a specific histone tail amino acid. Your task (individually or in a group of...
Answer all questions
Following graphs, the cellular response, as measured in real time by the concentration of a certain active effector protein, is plotted over time for five cell types (A to E) that are treated with three different concentrations of a signal molecule. During the time period indicated by the horizontal gray bar. the signal molecule is present in the culture media at a concentration of 1 nM (dotted curve), 5 nM (gray curve), or 25 nM (solid curve)....
l
1. What are the two molecular functions of M-cyclin with regard to the activation of M-Cak m-cyctin 2. Fill in the blanks: The pathway that is activated in response to DNA damage in G1 involves activation of which induces the complexes and inhibits them.ge,which encodes aprotein that binds to t's say a yeast temperature sensitive mutant has a mutation in the M cyclin gene which does not inactivate growth at the restrictive temperature (non-permissive temperature), resulting the M-cyclin protein...
Help with these bio questions please.Thank you
1 Secretory protein leave the cell by b Exoctossthey remain in the cytoplasm c) pinocytosis d) receptor mediated 2 If proteins lack a c) Ras d) Signal-recognition particle b) Sorting signal 3 What purpose does the protein coat serve a) Capture molecules to remain in the cytosol b) Shapes the membrane into a phospholipid bilayer membrane c) Provides extra protection and support to the organelles d) none of these are correct cells response...
Easy questions, 30 min timed assignment, please answer ASAP thanks.
The amino acid least likely to be involved in nucleophilic a. Alanine. b. Asparagine. 1. and/or electrophilic enzyme catalysis is e. All are equally likely c. Aspartate. d. Arginine Fibrous proteins, such as collagen, have which one of the following properties? a. b. c. d. e. 2. highly soluble in water their hydrophilic residues are directed into the interior of the protein exhibits enzymatic activity serve structural roles in the...
PLEASE ANSWER ALL
of: a) NA as the site s eukaryotic cells become more specialized, the nucleus is NOT important synthesis. b) Changes in the regulation of genes, c) DNA mutation, d) synthesis of mRNA, e) Golgi apparatus synthesis 4. Which of the following is associated with Co-enzyme A by the membrane of the mitochondrion for use in the Krebs cycle? a) proteins, b) amino acids, c) fatty acids, d) pyruvate e) glycogen 5. Which is NOT a characteristic of...
please answer all the questions
Question 8
0 / 1 pts
Our understanding of RNA
was non-existent until 2000
started with the identification of a tRNA which suggested a
method of converting DNA to protein
began to identify that DNA-->protein--> RNA
stopped growing after it's original discovery in the 70s
IncorrectQuestion 10
0 / 1 pts
Enzymes allow for chemical reactions to occur in the cell that
may not naturally occur at the right place at...
QUESTION 1 In E. coll, what two promoter regions are recognized by the s70 subunit? the -10 and 35 regions the - 10 region and the Pribnow box the-10 and -70 regions the-35 and -70 regions QUESTION 2 Which protein must first bind to the origin of replication for DNA synthesis to begin? DNA polymerase DnaA helicase Single-strand binding protein Click Save and Submit to save and submit. Click Save All Answers to save all answers. 2 Ch 16 PPT...
explain 1 or 2 molecular details in how epigenetics may allow
melanoma cells to outsmart BRAF inhibitors
**This is for a genetics course
Seope: This science commentary claims that epigeneties plays a role in cancer cells becoming therapy-resistant. The language used is generalized for the non-scientist and does not include any molecular details, such as methylation of a specific nucleotide in an allele or modification of a specific histone tail amino acid. Your task (individually or in a group of...
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