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3 years ago

Why are monarch butterflies poisonous?

Biology

2 answers:

Brut [27]3 years ago

3 0

Answer:

Explanation:

The milkweed plant also has high concentrations of cardiac glycosides in its sap. ... In addition, the caterpillar of the monarch butterfly dines exclusively on the sap of the milkweed plant, rendering both the caterpillar and butterfly mildly toxic as well.

Predators know that monarch butterflies are poisonous because of their bright coloration, which acts as a warning that they are poisonous.

This coloration warns potential predators that the animal contains poisonous chemicals. Warning coloration may work particularly well in adult butterflies because the hard body and wings allows a predator to bite the adult, taste the poison, and release the butterfly without killing it.

masha68 [24]3 years ago

3 0

Monarchs eat a plant called milkweed, which is why they are sometimes called “milkweed butterflies.” Milkweed contains toxins that are not poisonous to Monarchs but are poisonous to other living things. These toxins that are a regular part of the Monarch butterfly's diet make them poisonous to predators.
...... Predators that taste their food will spit out a Monarch Butterfly. If they have the ability to vomit, after swallowing a Monarch predators will usually do so...... This coloration warns potential predators that the animal contains poisonous chemicals. Warning coloration may work particularly well in adult butterflies because the hard body and wings allows a predator to bite the adult, taste the poison, and release the butterfly without killing it.

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I believe for number 1 the answer is A 260

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A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 4 picograms of DNA

damaskus [11]

Answer:

b: 8;8

Explanation:

Mitotic or meiotic cell division constitute the m phase of the cell cycle. At the end of the m phase, the new cells enter the interphase stage of the cell cycle. The interphase is further sub-divided into;

the $G_0$ phase,
the $G_1$ phase,
the S phase; and
the $G_2$ phase.

The $G_0$ phase is essentially a resting phase. Cells that do not need to divide except when necessary move into this phase after exiting the m phase.

Actively dividing cells enter the $G_1$ phase after exiting the m phase. Cell development and growth takes place. From there, the cells enter the S phase where DNA replication/synthesis takes place. The cells then enter the $G_2$ phase where proteins are synthesized in preparation for division or m phase.

At the S phase, the amount of DNA a cell carries is doubled but the chromosome number remains the same. For example, if a cell enters the S phase with 2 g of DNA containing 10 chromosomes, at the end of S phase, the amount of DNA would have come 4 g while the number of chromosomes will remain 10.

Hence, if the average amount of DNA in the assayed cells immediately after mitosis is 4 picograms, the amount would be 8 picograms at the end of S phase and will still remains 8 picograms at the end of $G_2$ phase.

The correct option is b.

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3 years ago

the nurse completes dietary teaching with a client who has chronic kidney failure. the nurse determines more teaching is needed

VashaNatasha [74]

Answer:

The options

"I will eat more oranges and other foods with vitamin C."

"I should increase dairy products in my diet."

"I should add protein powder to my fruit smoothies."

The CORRECT ANSWER IS

"I will eat more oranges and other foods with vitamin C."

Explanation:

"I will eat more oranges and other foods with vitamin C."

Citrus fruits are rich in potassium and should be stayed away from, since kidneys find it difficult to remove the excess potassium. Examples of foods that are rich in potassium are dried fruits, avocado, tomato, potatoes, and bananas. This statement indicates that additional teaching is needed.

In kidney failure, the client stands a higer chance for hyperkalemia, hypernatremia, and hyperphosphatemia.

Potassium, is found in large amounts in citrus fruits and dried fruits, and there's need to take these fruits with caution.

Phosphorus is limited due to the important balance of potassium electrolyte with calcium. Protein is inhibited as the failure to remove uric acid, which is produced during protein metabolism, via the kidneys. Sodium, obtained in foods, is also restrained to avoid fluid overload and edema.

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