The two electron micrographs in the figure below show nuclei of two different cell types
The two electron micrographs in the figure below show nuclei of two different cell types. The cell in panel (B) is more active transcribing its genes because
it displays more euchromatin than the cell in panel (A).
Homework Answers
Answer:- Yes, because euchromatin contains about 92% of genome (DNA, RNA and proteins) which is often involved in active transcription of DNA to mRNA.
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The two electron micrographs in the figure below show nuclei of two different cell types
17. The photo electron micrographs show early and late stages in the development of the cell...
17. The photo electron micrographs show early and late stages in the development of the cell wall in a young plant cell. early stage lalu sagu cell wall Which statement describes the events lead ng to the development of the cell wall? A Cellulose for the cell wall is synthesised by the Golgi body and modified by enzymes on the cell surface membrane B Erzymes in the cell surface membrane synthesise the cell wall components from monosaccharides brought by the...
Consider an H2+ ion. In the figure below, HẠ, HB, and e represent the two nuclei...
Consider an H2+ ion. In the figure below, HẠ, HB, and e represent the two nuclei and the electron, respectively, and all the relevant distances are defined. You must use atomic units for this problem. (a) (4 points) Write down the Born-Oppenheimer Hamiltonian for the H2+ ion. R HA H (b) (6 points) The anti-bonding molecular orbital is expressed as V = N_(ls (r) – 1s (r)), where ls, (r) and 1s; (r) are hydrogen Is orbitals centered at nuclei...
A radioactive sample contains two different types of radioactive nuclei: A, with half-life 9.0 days, and...
A radioactive sample contains two different types of radioactive nuclei: A, with half-life 9.0 days, and B, with half-life 18.0 days. Initially, the decay rate of the A-type nucleus is 256 times that of the B-type nucleus. 1) When will their decay rates be equal?
You have developed an activator of a non-receptor tyrosine kinase. In three different cell types that...
You have developed an activator of a non-receptor tyrosine kinase. In three different cell types that all contain this receptor your drug has different effects. In cell type A you see activation of gene X and gene Y; in cell type B you note activation of Gene X, but no change in the mRNA levels for Gene Y. In cell type C your drug has no effect on either Gene X or Y. Describe how could each choice (A-D) be...
You have developed an activator of a non-receptor tyrosine kinase. In three different cell types that...
You have developed an activator of a non-receptor tyrosine kinase. In three different cell types that all contain this receptor your drug mas different effects. In cell type A you see activation of gene X and gene Y; in cell type B you note activation of Gene X, but no change in the mRNA levels for Gene Y. In cell type C your drug has no effect on either Gene X or Y. Describe how could each choice (A-D) be...
8) Giardin has two haploid nuclei that are not 100% identical. This is a major odd...
8) Giardin has two haploid nuclei that are not 100% identical. This is a major odd ball in eukaryotes. What does that observation suggest? A) All nuclei are derived from a single ancestral cell B) Diploid nuclei have more evolutionary advantages than two haploid nuclei C) Asexual reproduction requires two haploid nuclei D) Giardia's two nuclei came from two different bacterial endosymbiotic events 9) Asexual reproduction in eukaryotes is unusual. Many eukaryotes can do asexual and sexual reproduction but not...
Consider two 2p orbitals, one on each of two different atoms, oriented side-to-side, as in the...
Consider two 2p orbitals, one on each of two different atoms, oriented side-to-side, as in the figure. Imagine bringing these nuclei together so that overlap occurs as shown in the figure. This overlap results in a system of molecular orbitals. (Scroll down to answer part "c)".) a) Below, construct an orbital interaction diagram for molecular orbital formation by dragging the images triat represent various orbital types (e.g., atomic, bonding, antibonding) into the relevant boxes. b) Identify the number of nodes in each...
There are two different types of producers of a good in an industry where firms are...
There are two different types of producers of a good in an industry where firms are price-takers. The marginal cost curves of the two types are shown in the figure. Type A is more efficient than Type B: for example, as shown, at the output of 20 goods, the Type A firms have the marginal cost of £2, as opposed to the marginal cost of £3 for the Type B firms. There are 20 Type A firms and 15 Type...
The figure below shows one unreplicated chromosome with its centromere (left side) and then the same...
The figure below shows one unreplicated chromosome with its centromere (left side) and then the same chromosome after DNA replication "S") (right side). The letters by each dash represent alleles for two different kinds of genes: there is the "r" allele for one type of gene and the "H" allele for a second kind of gene. In genetics, letters represent different kinds of genes and uppercase vs lowercase letters represent different alleles for the same gene: e.g., purple allele (P)...
1. The figure below shows calcium concentration in a cell and its surrounding fluid. (a) Describe...
1. The figure below shows calcium concentration in a cell and
its surrounding fluid.
(a) Describe the general means of
transport by which the illustrated cell could acquire more calcium
to fuel muscle contractions.
(b) (b) Discuss the properties of
the cell and its cell membrane that allow this movement of ions
across the membrane.
Interstitial Fluid Ca2 0.4 Ca2 0.1%
17. The photo electron micrographs show early and late stages in the development of the cell wall in a young plant cell. early stage lalu sagu cell wall Which statement describes the events lead ng to the development of the cell wall? A Cellulose for the cell wall is synthesised by the Golgi body and modified by enzymes on the cell surface membrane B Erzymes in the cell surface membrane synthesise the cell wall components from monosaccharides brought by the...
Consider an H2+ ion. In the figure below, HẠ, HB, and e represent the two nuclei and the electron, respectively, and all the relevant distances are defined. You must use atomic units for this problem. (a) (4 points) Write down the Born-Oppenheimer Hamiltonian for the H2+ ion. R HA H (b) (6 points) The anti-bonding molecular orbital is expressed as V = N_(ls (r) – 1s (r)), where ls, (r) and 1s; (r) are hydrogen Is orbitals centered at nuclei...
You have developed an activator of a non-receptor tyrosine kinase. In three different cell types that all contain this receptor your drug has different effects. In cell type A you see activation of gene X and gene Y; in cell type B you note activation of Gene X, but no change in the mRNA levels for Gene Y. In cell type C your drug has no effect on either Gene X or Y. Describe how could each choice (A-D) be...
You have developed an activator of a non-receptor tyrosine kinase. In three different cell types that all contain this receptor your drug mas different effects. In cell type A you see activation of gene X and gene Y; in cell type B you note activation of Gene X, but no change in the mRNA levels for Gene Y. In cell type C your drug has no effect on either Gene X or Y. Describe how could each choice (A-D) be...
8) Giardin has two haploid nuclei that are not 100% identical. This is a major odd ball in eukaryotes. What does that observation suggest? A) All nuclei are derived from a single ancestral cell B) Diploid nuclei have more evolutionary advantages than two haploid nuclei C) Asexual reproduction requires two haploid nuclei D) Giardia's two nuclei came from two different bacterial endosymbiotic events 9) Asexual reproduction in eukaryotes is unusual. Many eukaryotes can do asexual and sexual reproduction but not...
The figure below shows one unreplicated chromosome with its centromere (left side) and then the same chromosome after DNA replication "S") (right side). The letters by each dash represent alleles for two different kinds of genes: there is the "r" allele for one type of gene and the "H" allele for a second kind of gene. In genetics, letters represent different kinds of genes and uppercase vs lowercase letters represent different alleles for the same gene: e.g., purple allele (P)...
1. The figure below shows calcium concentration in a cell and
its surrounding fluid.
(a) Describe the general means of
transport by which the illustrated cell could acquire more calcium
to fuel muscle contractions.
(b) (b) Discuss the properties of
the cell and its cell membrane that allow this movement of ions
across the membrane.
Interstitial Fluid Ca2 0.4 Ca2 0.1%
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