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pogonyaev
2 years ago
9

Explain the rock cycle in 10 sentences

Biology
1 answer:
Semmy [17]2 years ago
6 0
The start of the rick cycle is the Transition to igneous rock, at which rocks are pushed deep under earths surface with a chance they will turn into magma. If the conditions no longer exists for the magma to stay in its liquid state, it will cool and solidifies into an igneous rock.
When rocks are exposed to high temperatures and pressure can be changed physically or chemically called metamorphic rock.
when rocks are exposed to the atmosphere are variably unstable and subject to the presses of weathering and erosion.weathering and erosion break down the original rock down into smaller fragments and carry away or devolve the material. These fragmented material accumulates and is bared by additional material While an individual grain of sand is still a member of the class of rock it was formed from, a rock made up of such grains fused together is sedimentary.
My source is Wikipedia

Hope this is good enough!
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Which organelle fills the cell, holds organelles, and is the place for most of the metabolic activity in the cell occur?
Andru [333]

A. Cytoplasm


(The Nucleus is the control, site of DNA)

Cell wall is in plant cells, giving stability and protecting the cell from rupturing. DNA is stored in the Nucleus, not a organelle.


The answer is Cytoplasm, C.

8 0
3 years ago
Read 2 more answers
What is the determining factor for the transcription of structural genes of the trp operon?
padilas [110]

The right answer is 3. the availability of tryptophan in the environment

The TRP operon regulation depends on the availability of the tryptophan molecule (it depends if the cell need tryptophan or already has it).

There are two modes of regulation of the trp operon: Suppression and Mitigation

*Repression

The synthesis of operon mRNA is controlled by a repressor that blocks transcription when bound by tryptophan, which acts as a co-repressor.

The repressor, a 108 aa homodimer (ie 2 apo-repressor), has helix-turn-helix domains that interact with inverted repeats at the major groove of the operator, thus allowing its fixation.

In the absence of trp, the repressor is inactive and does not attach to the operator. The RNA polymerase can bind to the promoter and transcribe the trp E, D, C, B, A structural genes.

In the presence of trp, the repressor changes conformation and becomes active, so it binds to the operator, preventing RNA polymerase from accessing the promoter so transcription will not occur.

* The Attenuation

This is a premature termination of transcription that is a function of Trp concentration. It takes place at a late moment of transcription while regulation by repression is done during the initiation.

1st Case: Low Trp Rate, Continuous Transcription, → Formation of the Anti-attenuator in the absence of trp, and therefore the synthesis of tryptophan is continued.

2nd case: High rate of trp, stop transcription, → Formation of the attenuator in the presence of trp. This one will attenuate the synthesis of tryptophan.

4 0
3 years ago
The cell theory eventually replaced the concept of spontaneous generation as a result of what experimental evidence?
miskamm [114]

Answer & explanation:

The cell was discovered in 1669 by the English scientist Robert Hooke when looking at a piece of tissue in a two-lens microscope. Hooke was able to visualize small cavities in the experiment piece, then naming such cell cavities.

Only a century and a half after the discovery of the cell, that the Cell Theory was launched, replacing the theory of spontaneous generation (or abiogenesis).

Before that, many scientists were already busy understanding the structure and functioning of the cell, generating knowledge that became fundamental to the development of biology, specifically cytology, a branch of science that studies the structure, functions and development of cells.

4 0
3 years ago
What type of factor is a living or<br> once-living part of an ecosystem?
kicyunya [14]

Answer:

an organism

Explanation:

or Biotic factors

8 0
2 years ago
Raya conducts an experiment to study the effect of altitude on the growth of plants she gathered plant samples and places them o
aniked [119]

Answer:

Independent variable: ALTITUDE

dependent variable: GROWTH OF PLANTS

Confounding variable: STOREYS OF THE BUILDING

Explanation:

In an experiment, the basic components i.e primary variables that an experiment should contain, are the independent and dependent variables.

- The independent variable is the variable that is changed or manipulated in an experiment. In this experiment, the ALTITUDE of the plant is the independent variable.

- The dependent variable is the variable that responds to changes to the independent variable. It is the variable measured in an experiment. In this case, the dependent variable is the GROWTH OF THE PLANTS.

- The confounding variable is a variable that has an extra influence on the outcome of the experiment. In other words, the confounding variable has an impact on the dependent variable. In this case, the confounding variable is the STOREYS OF THE BUILDING.

3 0
2 years ago
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