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3 years ago

When one species looks harmful or unpalatable?

1 answer:

3 0

Batesian mimicry is when an organism uses colors or symbols that other organisms regard as dangerous. These organisms use their scary appearance to appear as more of a threat than they really are, such as the viceroy butterfly, which looks like a poisonous monarch but is actually harmless.

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A drug that blocks atp production is introduced into an isolated axon preparation. the axon is then repeatedly stimulated and re

satela [25.4K]

Sodium pumps and potassium pumps will not be triggered to open or close therefore causing the cell to remain at electrochemical equilibrium (-70 mv) so there will be no movement of ATP. Also the phosphates needed to create ATP will be inhibited and with a negative charge the cell will not reach threshold to propagate a reaction along the axon.

4 0

3 years ago

Answer the questions plz

exis [7]

Answer:

1) A double Helix with complementary bases in the middle. The backbone is made of sugar and phosphates. The middle is bases

2) To hold the genetic info for the cell

3) To bring the genetic info from the nucleus to the ribosomes as DNA can't leave the nucleus

4) To bring amino acids to the ribosomes to help build a protein

5) A chain of amino acids held together by peptide bonds

6) Ribosomes

7) Because those are the bases that are complementary in DNA so they must be equal

8) It could lead to a mutation as it would cause the mRNA to code for a different amino acid and thus a different protein will be made

9) DNA is the blueprint for mRNA which will travel to the ribosomes and code for specific amino acids which will eventually build a protein

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3 years ago

What makes water a polar molecule?

masha68 [24]

Answer:

It contains partial positive and negative charges.

Explanation:

A hydrogen bond is a non-covalent bond between a partial negative charge and a partial positive charge. Hydrogen bonds tend to be weak. Hydrogen bonds tend to be transient.

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3 years ago

A 2325-g (5 lb 2 oz) male newborn is delivered at 33 weeks' gestation; apgar scores are 7 and 8 at 1 and 5 minutes, respectively

denis23 [38]

The right answer is Child abuse.

Cannabis (marijuana) during pregnancy is dangerous for the fetus

During pregnancy, the active component of cannabis, which is THC (tetrahydrocannabinol), can go into the placenta and affect the fetus, including its birth weight (like the case in the question here) and brain function, reducing the baby's IQ and attention capacity.

Depending on the type of drug and the quantity consumed, it is also possible that the baby suffers from weaning at birth, that is to say from deprivation (inconsolable crying, irritability, tremors, feeding difficulties, etc.). .

Cannabis may also have longer-term effects in children (learning disabilities, behavioral problems, hyperactivity, etc.).

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3 years ago

Which of these gymnosperms are known to be important in maintaining the balance of carbon in an ecosystem?

CaHeK987 [17]

The correct answer is: [D]:

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→ " redwood tree forests " .

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Note: Let us consider the other answer choices.

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Choice: [A]: "garden flowering plants" ; is incorrect — since these are not generally considered to be part of a true or traditional "ecosystem" ; and especially since "garden flowering plants" are, in fact, "flowering plants" — which means that they are "angiosperms" — Not "gymnosperms ".

→ Rule out: " Choice: [A] " .

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Choice: [B]: " ferns and liverworts " ; is incorrect — since both ferns — as well as liverworts — are Not "gymnosperms ".

Liverworts are "bryophytes" {which lack true vascular tissue] ; and ferns are "pterophytes" ["seedless vascular plants"].

→ Rule out: " Choice: [B] " .

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Choice: [C]: " mosses and horsetails "; is incorrect ; since both mosses — as well as horsetails — are Not "gymnosperms ". Mosses are "bryophytes" (see aforementioned) ; and horsetails are "non-seed bearing plants" that spread vegetatively [underground; by asexual reproduction — and Not by seed .].

→ Rule out: " Choice: [C] " .

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Choice: [D]: " redwood tree forests " ;

— is the only answer choice provided that is a "gymnosperm".

Furthermore, the "redwood tree" is a conifer (i.e. "coniferous; or, "cone-bearing" plant} that reproduces through seeds spread by "cone") — and all "conifers" are a type of "gymnosperm."

Furthermore, "redwood trees" grow large and tall, and redwood forest communities within an ecosystem; due to there size and presence, are: "known to be important in maintaining the balance of carbon in an ecosystem."

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→ As such, the correct answer is:

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→ Answer choice: [D]: " redwood tree forests " .

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Hope this helps!

Best wishes to you in your academic endeavors

— and within the "Brainly" community!

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5 0

3 years ago

Read 2 more answers