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drek231 [11]
3 years ago
15

Please help me!!!!!

Biology
1 answer:
ExtremeBDS [4]3 years ago
3 0

Hey I don't know the answer but what you can do is open another tab and go back to your lesson the answer might be in there.

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Which structure is composed of the filaments actin and myosin?
bagirrra123 [75]

Myofibril. Thick filaments consist of myosin, held in place by titin filaments

 

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3 years ago
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Look at the two images of cells.A, A hormone is inside a receptor. B, A hormone is inside a nucleus.Which of the following state
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Answer:

A) Image A represents a peptide hormone that interacts with a receptor, and image B represents a steroid hormone that interacts with the cell's DNA.

Explanation:

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2 years ago
When vesicles of the cardiac sarcoplasmic reticulum (CSR) are incubated with ATP Mg^2+ and Ca^2+, they take up Ca^2+ and reach a
abruzzese [7]

Answer

I added 4 and 5 as an attachment due to time constraint.

Explanation:

1. at a steady state ca2+ taken by vesicle = 40n/mol

enclosed volume of CSR = 5μ/mg

concentration of ca2+ in vesicle =

40*10⁻⁶/5x10⁻⁶

= 0.008

= 8x10⁻⁹mol/L

2. radius of circle =75nM

volume = 150nm

volume of vesicle = 4/3 x pi x r³

= 1.33 x 3.14 x (75x10⁻⁹)³

= 1.77 x 10⁻²¹

when we convert this we get

1.77x10⁻¹⁸L since 1m³ is equal to 100oL

surface area =4x3.14x(75x10⁻⁹)²

= 12.56x5.625⁻¹⁵

= 7.065x10⁻¹⁴m²

this is 7.065x10⁻¹⁰cm²

3. number of vesicle/CSR

= 5x10⁻⁶/1.77x10⁻¹⁸

= 2.824x10¹²

surface are = 2.824x10¹² x7.06x10⁻¹⁰

= 19.95x10²

8 0
3 years ago
What is the best evidence for a three-domain system?
ch4aika [34]

Answer:

The best evidence for the three domain system is

Sensitivity to Antibiotics

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The three domains of life includes :

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Bacteria - all other bacteria that are not included in the Archaea domain.

Eukarya - all the organisms that are eukaryotic or contain membrane-bound organelles and nuclei.

Types of evidences for the three domain system are:

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2) the cells's membrane lipid structure.

3) its sensitivity to antibiotics.

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The psychiatric mental health nurse is participating in an interdisciplinary meeting about an inpatient client with severe obses
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