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Anestetic [448]
3 years ago
7

the __________ __________ is made up of two concentric membranes and is continuous with the membrane of the endoplasmic reticulu

m.
Biology
1 answer:
Kobotan [32]3 years ago
5 0

Answer:

The <u>nuclear  envelope</u> is composed of two concentric lipid bilayer membranes separated by an intermembrane space of about 20-40 nm. The outer membrane is continuous in many places with the rough endoplasmic reticulum. Like the rough ER the outer membrane of the nuclear envelope is dotted with ribosomes.

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Part C Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an
Bumek [7]

Answer:

K = 9.620 × 10⁻⁶

Explanation:

From the given information:

Temperature T= 6° C

= (273 + 6)K

= 279 K

The correct and well presentation of the reactions are:

1. Luciferin + O_2     ⇆     oxyluciferin + light   ΔG₁°

2. ATP                     ⇄   AMP + PP_i                  ΔG₂°  = -31.6 kJ/mol

The overall  ΔG° = -4.80 kJ/mol

Let's first determine the ΔG₁° for the equation (1)

ΔG° = ΔG₁° + ΔG₂°

- ΔG₁° = - ΔG° + ΔG₂°

ΔG₁° = ΔG° - ΔG₂°

ΔG₁° = ( -4.80 - (-31.6) ) kJ/mol

ΔG₁° = 26.8 kJ/mol

Using the formula:

ΔG° = -RTIn K

In \  K =\dfrac{-\Delta G^0}{RT} \\ \\ log \ K = -\dfrac{\Delta G^0}{2.303RT}

log \ K = -\dfrac{\Delta G_1^0}{2.303RT} \\ \\ log \ K = -\dfrac{26.8 \times 10^3 \ J/mol}{2.303\times 8.314 \ J/mol/K \times 279 \ K} \\ \\ log \  K =- 5.017

K = antilog (-5.017)

K = 9.620 × 10⁻⁶

6 0
3 years ago
Most prokaryotes have a single ______ molecule found in the cells cytoplasm. This large DNA molecule is typically referred to as
o-na [289]

Answer:

most prokaryotes have a single double stranded circular DNA

the cell's nucleoid

8 0
3 years ago
If an atom has a mass number of 23, which of the following is always true? A. The number of protons in the nucleus does not equa
Westkost [7]
The correct answer will be A;

A) The number of protons in the nucleus does not equal the number of neutrons.

A=mass number:
Z=atomic number (= number of protons)
N=number of neutrons:

A=Z+N

If the number of protons in the nucleus is equal the number of neutrons , we would have an even mass number; because Z=N=x; then A=x+x=2x  (this is always an even number) but  23 is an odd number, therefore the number of protons in the nucleus does not equal the number of neutrons. 
3 0
3 years ago
Which event takes place 1st in the stages before the birth of a star<br> (Its astronomy)
Jobisdone [24]

Answer:

Nuclear fusion.

Explanation:

A protostar forms as mass increases. Nuclear fusion begins under high pressure.

7 0
4 years ago
A peacock is significantly more colorful than a pea hen and has a much larger tail. These traits allow the peacock to attract a
marishachu [46]

Answer:

This is an example of runaway sexual selection

3 0
2 years ago
Read 2 more answers
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