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ratelena [41]
4 years ago
9

Match each type of association with the best example commensalism mutualism parasitism amensalism A. A mold produces a chemical

that kills bacteria without apparently benefiting B. "Aerobic bacteria in the human colon consume oxygen, making it possible for anaerobic species to survive" C. "Flagellates live in the gut of termites, feeding on the wood consumed by the termite and allowing the termite access to nutrition and energy in wood that they could not otherwise digest" D. "A helminth takes up residence in a human digestive tract, consuming nutrients"
Biology
1 answer:
Brums [2.3K]4 years ago
8 0

A. A mold produces a chemical that kills bacteria without apparently benefiting.  - <u>amensalism </u>

B. Aerobic bacteria in the human colon consume oxygen, making it possible for anaerobic species to survive.  - <u>commensalism </u>

C. "Flagellates live in the gut of termites, feeding on the wood consumed by the termite and allowing the termite access to nutrition and energy in wood that they could not otherwise digest" - <u>mutualism</u>

D. "A helminth takes up residence in a human digestive tract, consuming nutrients" - <u>parasitism</u>

<u></u>

Explanation:

Amensalism is any relationship between organisms of different species in which one organism is inhibited or destroyed while the other organism remains unaffected.

Two examples of antibiosis amensalism are provided by the bread mold Penicillium and black walnut trees.

Amensalism is the association between organisms of two different species in which one is inhibited or destroyed and the other is unaffected.

Commensalism is a long-term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed.

Mutualism describes the ecological interaction between two or more species where each species has a net benefit. Mutualism is a common type of ecological interaction.

parasitism is a symbiotic relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life

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You are involved in an experiment involving fluorescent painting of chromosomes. You observe the following in a nucleus experien
Galina-37 [17]

Answer:

It seems that a reciprocal translocation is going on.

Explanation:

A translocation occurs when a chromosomal fragment changes its location in the same chromosome from the original to a new one. Or when it leaves the chromosome to re-locate in a new different chromosome.

According to this, there are different types of translocations:

  • Intrachromosomal translocations:
  1. Intra-radial: the change in position occurs in the same arm of the chromosome. For instance, 123.456789 → 123.478569
  2. Extra-radial: The change in position occurs from one arm to the other of the same chromosome. For instance, 123.456789 → 15623.4789
  • Extrachromosomal translocations:
  1. Transposition: not reciprocal interchange. The fragment leaves a chromosome to re-locate in another chromosome. The other chromosome does not send any fragment to the first one.
  2. Reciprocal translocation: There is a reciprocal interchange. A fragment of chromosome A goes to B, and a fragment of chromosome B goes to A.

Reciprocal translocations might be:

  1. Fraternal: the interchange occurs among homologous chromosomes
  2. External: the interchange occurs among non-homologous chromosomes

Reciprocal translocations are easily recognized during meiosis because an association between four chromosomes can be observed.  This association is a quadrivalent structure.

During metaphase 1, the centromeres involved in the quadrivalent originate centromeric co-orientation or disjunction.

4 0
3 years ago
The sides of the DNA ladder are made up of a phosphate and:
lesya [120]

Answer:

A sugar called deoxyribose.

Explanation:

DNA is made up of molecules called "nucleotides". These are:

  • A phosphate group
  • A pentose sugar [deoxyribose]
  • A nitrogen-containing base [adenine, thymine, guanine and cytosine]

Thus the first option is the right answer.


Reasons why the other options are wrong:

"A plasma called haemoglobin" is wrong as plasma and haemoglobin are related to the blood.

"A chemical called nucleic acid" is wrong as it is not what DNA's made up of. DNA and RNA are nucleic acids themselves.

"An acid called chlorophyll" is wrong as chlorophyll is related to plants.

7 0
2 years ago
Margo is concerned about her family's bull. They raised him from a calf, always ensuring that he received the proper mineral sup
VMariaS [17]

Which option describes the probable issue with Margo’s bull in the following scenario?

Available Options are:

He is drinking polluted water.

He is getting too much food.

He has an external parasite.

He suffers from maltreatment

Answer:

He is getting too much food

Explanation:

To have an unhealthy amount of bodyweight implies that Margo is suffering from Obesity. And based on scientific research, Obesity is attributed to the consumption of too much food. This can occur in both humans animal.

Hence, in this case, from the available options, the correct answer is that "He is getting too much food."

Polluted water and external parasites will only cause diseases, hence option A and C are not correct.

Obesity can never result from maltreatment. Hence option D is not correct

4 0
3 years ago
The piece of RNA below includes the region that codes for the binding site for the initiator tRNA needed in translation. 5′-GUUU
Otrada [13]

Answer: B) Arginine

Explanation: Having the sequence (mRNA):

5′-GUUUCCCGUAUACAUGCGUGCCGGGGGC-3, we can go through the following procedure:

1. Identifying the binding site for the initiator tRNA, which is the so-called "start codon" AUG: 5′-GUUUCCCGUAUAC<u><em>AUG</em></u>CGUGCCGGGGGC-3′

2. Look for the next codon after AUG, which is CGU:

5′-GUUUCCCGUAUACAUG<u><em>CGU</em></u>GCCGGGGGC-3

3. Look in a codon table in which amino acid corresponds to CGU. Then you will find that amino acid is Arginine.

The reason you should follow the above procedure is that during translation, ribosomes are in charge of creating a new peptide bond from mRNA using different tRNA. A tRNA is a structure with a codon attached to it and an amino acid. If a tRNA has a UAC codon attached to it, then this tRNA is going to scan the mRNA looking for the corresponding AUG (the so-called start codon). This is why the tRNA with the UAC codon attached to it is called "initiator tRNA". When initiator tRNA finds the start codon, the large subunit of the ribosome would place this tRNA plus mRNA in its so-called P site (Polypeptide site). On the right of the P site is the A site (Amino acid site) which will be waiting for the tRNA which attached codon corresponds to the next codon after the start codon AUG in the mRNA. For this case, that codon which A site is waiting for is CGU, which is attached to a tRNA containing the corresponding amino acid which is Arginine.

3 0
3 years ago
Why is evolution considered a theory
iVinArrow [24]
The answer is B
It cannot be proven
4 0
3 years ago
Read 2 more answers
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