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prohojiy [21]
2 years ago
13

1.Excess carbon dioxide is harmful to the oceans because

Biology
1 answer:
Liono4ka [1.6K]2 years ago
8 0

Answer:

1) a    2)b      

Explanation:

reasons

1) Once carbon dioxide dissolves in water, it reacts with water molecules to form carbonic acid.

2) the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

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What is the correct order for the hierarchy of biological organization from the least to the most complex? (concept 1.1)?
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Answer;

Molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem.

Explanation;

-The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

-Organisms are highly organized, coordinated structures that consist of one or more cells. Even very simple, single-celled organisms are remarkably complex: inside each cell, atoms make up molecules; these in turn make up cell organelles and other cellular inclusions.

-In multicellular organisms, similar cells form tissues. Tissues, in turn, collaborate to create organs (body structures with a distinct function). Organs work together to form organ systems.

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3 years ago
Cells that have their own unique structures and functions are _____.
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Answer:

Specialized cells because they preform a specific function

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According to the second law of thermodynamics what happens to the energy we consume as food ?
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We store it as stored chemical energy
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3 years ago
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The lac operon can be regulated by two distinct methods. Which of the following statements are correct?The lac operon can be act
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Answer:

  • The lac operon can be activated by the binding of allolactose to the repressor protein, releasing it from DNA and thereby allowing for transcription to occur.
  • In response to low glucose levels, cAMP is upregulated; the binding of cAMP to the cAMP receptor protein triggers the activation of the operon.

Explanation:

Lactose operon or lac operon  (includes lacZ, lacY and lacA genes) is found in some bacteria and the products of its genes are involved in lactose metabolism. So, this operon is active (genes are transcribed) when lactose is present and glucose is absent (or at low level). The operon is regulated by the lac repressor which acts as a lactose sensor and catabolite activator protein (CAP) which acts as a glucose sensor.

When there is lactose (in the form of allolactose) lac repressor detects it and stops being repressor. This enables transcription.

CAP detects glucose (via cAMP) and activates transcription when glucose levels are low.

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Water molecules are polar with the oxygen side being
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Water molecules are polar with the oxygen side being, slightly negative and the hydrogen side being slightly positive.
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