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2 years ago

4. A chemical or physical agent in the environment

Biology

2 answers:

Georgia [21]2 years ago

8 0

Answer:

Mutagen

Explanation:

In genetics, a mutagen is a physical or chemical agent that changes the genetic material, usually DNA, of an organism and thus increases the frequency of mutations above the natural background level.

Alina [70]2 years ago

3 0

Answer:

Mutagen

Explanation:

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The establishment of a bird reservation is a way to (1 point)

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$\bold{ANSWER:}$

Last option: Preserve an ecosystem

$\bold{EXPLANATIONS:}$

• The establishment of a bird reservation is a way to preserve an ecosystem because reservation provides suitable environment to organism. A healthy ecosystem means large number of biodiversity.

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Animal cell map to understand how cells function as the fundamental unit of life, you must first become familiar with the indivi

kodGreya [7K]

Answer:

a-synthesizes lipids

b-assembles ribosomes

c-defines cell shape

d-produces secretory proteins

e-modifies and sorts proteins

f-digests proteins

g-generates ATP

Explanation;

Some organelles and structures that make up the cell include; mitochondria, ribososmes, cell membrane, endoplasmic reticulum, golgi apparatus, lysosomes, among others,

-These organelles play individual roles in the cell; For instance;

Mitochondria-generates ATP

Lysosomes; digests proteins and worn out organelles

Golgi apparatus; modifies and sorts proteins

Ribosomes; Produces proteins

Endoplasmic reticulum; sythesis of lipids

Cytoskeleton; it gives the cell its shape

Nucleolus; manufactures and assembles ribosomes

etc.

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2 years ago

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The body regulates those levels in an example of homeostasis. When levels decrease, the parathyroid releases hormones. If calcium levels become too high, the thyroid helps out by fixing calcium in the bones and lowering blood calcium levels. The nervous system helps keep homeostasis in breathing patterns.

Explanation:

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How many nucleotides are needed to code for two amino acids?

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3 nucleotides code for a single amino acid. This group of 3 is known as a codon. If you are coding for two amino acids, you would need two codons, 3 nucleotides each, for a total of 6 nucleotides.

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Crocodiles are adapted to live in their environment. Which adaptations allow a crocodile to hunt land animals effectively withou

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Answer: D

Explanation:

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