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gtnhenbr [62]
3 years ago
5

What evidence would indicate whether this animal is aquatic or terrestrial in mollusca?

Biology
2 answers:
cestrela7 [59]3 years ago
8 0

Answer:

Presence of gills indicate the given mollusc is aquatic.

Explanation:

Respiratory organ separates land molluscs from aquatic ones. Aquatic molluscs have gills as respiratory organs while land molluscs do not have gills. Land snails have vascularized mantle that serve the function of lung. The vascularized lining of the mantle cavity serve as site of gaseous exchange in land molluscs.

zhenek [66]3 years ago
7 0
<span>When there is the presence of gills it will be easy to determine if the animal is aquatic or mollusk.

Aquatic means related to water. While Mollusca is termed as the large phylum of invertebrate animals whose members are called mollusks. Most of the mollusks live in water.

The most numerous mollusks are mantle which is important for cavity and is used for excretion and breathing, the presence of radula and their structure of the nervous system.</span>
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The complete question is:

a bacterium is infected with an experimentally constructed bacteriophage composed of the T2 phage protein coat and T4 phage DNA. The new phages produced would have

A) T2 protein and T4 DNA

B) T2 protein and T2 DNA

C) a mixture of DNA and proteins of both phages.

D) T4 protein and T4 DNA

E) T4 protein and T2 DNA

A bacterium infected with an experimentally constructed bacteriophage will give new phages with the virus' DNA and the type of proteins that this DNA encodes.

A bacteriophage is a virus that attaches itself to a bacteria and uses it to replicate itself. Viruses have two main parts, a protein coat and their DNA inside it.

  • The experimentally constructed bacteriophage has one type of protein that makes the coat, the T2. This type of protein will allow the virus to attach and infect the bacteria.
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In conclusion, The new phages produced would have D) T4 protein and T4 DNA.

Learn more at:

brainly.com/question/3901247

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SVETLANKA909090 [29]

Answer:

True

Explanation:

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<span>B- tree > insect > frog> snake> hawk

The food chains are represented by organisms interconnected by red arrows that point in the direction of the one that's eating. So, the relation that is explicit by the arrow is that the organism from where the arrow departs is eaten by the organism where the arrow is pointing towards to. So, the food chain that can be observed accurately in the food web is: the tree is eaten by the insect, the insect is eaten by the frog, the frog is eaten by the snake, and the snake is eaten by the hawk.
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Answer:

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Science is based on theories and laws. Scientists are constantly trying to explain the concepts of the universe by ideas. Sure, instruments do help scientists gather information and such, but ideas and philosophies, theories and laws are the ones that are most important. Without new ideas in science, we would not be able to hypothesize many things, or even develop new instruments.

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