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frozen [14]
3 years ago
9

A _____ is a gas-filled sac that regulates buoyancy and depth.

Biology
1 answer:
DaniilM [7]3 years ago
4 0
Swim bladder I believe

Hope this helps
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8. Genetic engineering has directly increased productivity in which<br><br> U.S. industry?
frosja888 [35]

Answer:

Agriculture  

Explanation:

Genetic engineering can be defined as the use of genetic techniques aimed at modifying the genome of living organisms, thereby being used to develop Genetically Modified Organisms (GMOs). In the USA, genetic engineering methodologies have been used in agriculture to improve crop yields and reduce costs (for example, by reducing the need to use pesticides). Some of the most important genetic engineering techniques that nowadays are being used in agriculture research include biolistic transformation, <em>Agrobacterium</em>-mediated transformation, the CRISPR-Cas9 genome editing system, etc.

8 0
3 years ago
Cell walls are impermeable to transport of most materials required for bacterial nutrition.
mezya [45]

The given statement is False.

The bacterial cells walls are composed of peptidoglycan, also known as murein. It comprises polysaccharide chains cross-linked by unusual peptides, involving D-amino acids. The bacterial cell walls are distinct from cell walls of fungi and plants that are made up of chitin and cellulose, respectively.

The cell walls in bacteria allow small molecules to pass through them freely, however, do not permit large molecules to pass through them, in this manner, it function as a coarse filter.

The main function of the cells wall is to sustain the shape of the cell and inhibit the cell from bursting due to osmotic pressure. The cell wall allows the components to pass, which are essential for bacterial nutrition.


8 0
3 years ago
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What is the definition to 'light'?​
Olenka [21]

Answer:

Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is the visible spectrum that is visible to the human eye and is responsible for the sense of sight.

3 0
3 years ago
How does DNA affect genetics?
Basile [38]

Answer:

Over our lifetime, our DNA can undergo changes or mutations that result in differences in the DNA sequence and may affect the proteins that are made. Mutations can occur as a natural consequence of errors in DNA replication or as a result of exposure to environmental factors such as smoking, sunlight or radiation.

Explanation:

5 0
3 years ago
What does the energy pyramid demonstrate? A. A great amount of energy is gained moving up the energy pyramid. B. A great amount
Crazy boy [7]

The answer should be B

4 0
3 years ago
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