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12345 [234]
3 years ago
15

Yellowfin tuna are large fish that are found in tropical and subtropical waters around the world. They typically school under ob

jects such as boats or patches of driftwood for protection from predators. Schooling under these structures also provides yellowfin tuna with easy access to a food source, such as smaller herbivorous fish that may be searching for food around the structures.
Which trophic level does yellowfin tuna fill in a food chain?

A. producer primary consumer
B. secondary consumer
C. tertiary consumer
Biology
2 answers:
elena-14-01-66 [18.8K]3 years ago
8 0

Answer: Secondary consumer

Explanation:

The secondary consumers are the organism, that feed on the small herbivores organism.

The yellowfin tuna feeds on the smaller herbivores for their energy needs. The smaller fishes will be primary consumers as they are herbivores fishes that feed on smaller plant bodies found in water.

The secondary consumers are usually larger fishes that feed on the smaller fishes in water.

Pani-rosa [81]3 years ago
7 0
Yellow fin tuna are secondary consumers because they prey on smaller fish but can also be eaten as well.
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Answer:

The base pairing of complementary regions of RNA leader sequence determines if the transcription will be attenuated at the end of leader sequence or will continue for structural genes.

Explanation:

The RNA leader sequence of trp operon is the site where the transcription is initiated.  

When tryptophan levels are high, translation of sequence 1 of the leader sequence is followed by base pairing between the complementary 3 and 4 regions of the leader sequence. The base pairing forms a terminator like attenuator and stops the expression of structural genes.  

When tryptophan is not present, ribosome pauses at tryptophan codon of region 1 of the leader sequence. Hence, the regions 2 and 3 of the leader sequence base pair and prevents the formation of attenuator by not allowing the region 3 to pair with region 4.  

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4 years ago
PLS HELP! WILL GIVE BRAINLIST!
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Yes, it will effect the entire ecosystem because they if their population begins to decrease than the food population for other animals will begin to decrease henceforth their populations will decrease causing the food population for the killer whale to decrease which means the killer whale population will decrease because they won’t be able to get as much food.
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3 years ago
A man who has a X-linked (sex-linked) allele will pass it on to
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Answer:

all his daughters

Explanation:

Parents : (mom) XX • XY (dad)

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XX (every daughter will take an X from the mom and the other X from the dad)

8 0
3 years ago
A research team needs an antibody that binds to a protein of interest so that protein expression can be monitored. They use epit
antiseptic1488 [7]

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C.The added epitope disrupts the function of the tagged protein

Explanation:

When an additional sequence is tagged to a protein to use comercial antibodies, there are several reasons why this procedure wouldn't work as expected (note that we're assuming the protein is being expressed but it's not possible to detect it).

For example, the sequence of nucleotide added to codify for the tagged epitope are removed during the RNA processing. In that case, the protein would be expressed without the epitope, so it would be impossible to localize it with the antibodies.

Also, it could be that the new epitope is affecting some way the protein folding, making it not functional. This way, it would be degraded by the cell so it wouldn't be detected.

Another possibility is that the epitope doesn't affects the protein folding nor its function, but during the folding ends up in a conformation that makes it inaccesible for the antibody.

In summary, the way as the possible answers to this question are shown, the correct option seems to be C:<em> The added epitope disrupts the function of the target protein.</em>

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3 years ago
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