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ZanzabumX [31]
3 years ago
13

What cover the nucleus of a cell

Biology
2 answers:
bija089 [108]3 years ago
8 0

Answer:

The nuclear membrane or nuclear envelope which is a double lipid bilayer

professor190 [17]3 years ago
8 0

Answer:

Nuclear Envelope

Explanation:

The nucleus is covered by the nuclear envelope, which is a double membrane that protects DNA both physically and chemically.

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When a molecule absorbs a photon, one of its electrons is raised to the ______ state.
77julia77 [94]

The correct answer is: D) excited

A molecule is in an excited state when its energy level is higher than the ground state. That molecule stays in excited state for short time and then returns to a state with lower energy. This return to a lower energy level is described as decay and is the inverse process of excitation.

The transition from ground to excited state of an atom is possible if electrons gain energy that is higher than the difference in energies between the two energy orbits.

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3 years ago
The failure of the attempt to reintroduce clapper rails in California was an example of the _____.
Lemur [1.5K]

The correct answer is option D, difficulty of redesigning workable ecosystems

Reason -

The area that was redesigned into an ecosystem actually failed to attract the endangered species of clapper rails in California because of the following two reasons –

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3 years ago
Which biome is charterized by seasonal drought occasional fires and grazing by large mammals
Charra [1.4K]
I thought it was savannah but grasslands could be it too.
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3 years ago
What is an acid?<br> What is the ph level of an acid?
Stels [109]

Answer:

• An acid is an electrolyte that hydrolyses in water to release hydrogen ions.

{ \rm{HA _{(aq)} \:  \:  {}^{ \dashrightarrow} _{ \dashleftarrow} \:  \:  H {}^{ + } _{(aq)} +A {}^{ - }  _{(aq)}}} \\

• pH level of an acid;

  1. Strong acid → 0 - 3.8
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7 0
2 years ago
Sort the descriptions or examples into inherited or somatic mutations.
PSYCHO15rus [73]

Answer: inherited: -exists in all the cells of the body

-transferred via egg and sperm cells

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Type

Explanation:

Plato

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3 years ago
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