Answer:
A) It uses less energy to make something from recycled materials than from new materials.
Explanation:
When a recycled material is used to make a new product, it conserves energy because the recycled materials have already been processed once; so making something from it for the second time uses less energy-intensive than the first. For example: Making new aluminium from old products uses 95% less energy than making it from scratch.
Hence, the correct answer is "A)"
Answer:
The genotype of a plant with bumpy pods would be aa, while the genotype of a plant with smooth pods would have to be either AA or Aa.
Explanation:
The smooth pod allele ("A") is dominant, which means it overwrites the bumpy pod allele ("a"), which is recessive.
Because of this, all genotypes with at least one "A" in them are smooth. This includes "AA" and "Aa."
The only way for a pod to be bumpy here is if there aren't any dominant alleles to nullify it. That means plants with bumpy pods can only have the "aa" genotype.
[Note: I didn't use the letter "a" for any particular reason. The specific letter isn't relevant here.]
The Translation initiated is <u>Option D.All of the listed answers are correct. </u>
At the initiation of translation ribosomes and tRNA bind to the mRNA. tRNA is located at the first docking site of the ribosome. The anticodon of this tRNA is complementary to the start codon of the mRNA where translation begins. After binding to the mRNA, the ribosome initiates translation at the start codon AUG and moves the mRNA transcript one codon at a time until it reaches the stop codon.
When tRNA recognizes and binds to the corresponding codon in the ribosome, it transfers the corresponding amino acid to the end of the growing amino acid chain. tRNA and ribosomes then continue to decode the mRNA molecule until the entire sequence is translated into protein. tRNA acts as an adapter molecule during the translation process. Formerly known as soluble RNA or sRNA. As an adapter, it connects amino acids to nucleic acids.
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Answer: mutations that natural selection can work on. 4.) How do scientists calibrate a molecular clock? ... they compare the number of positive mutations that have occurred in a particular species with the number of negative mutations that have occurred
Explanation:
About the question:
You will find the diagram used to answer the question in the attached files.
Answer:
D) Some of the bacterial population was resistant to this antibiotic.
Explanation:
The term resistance refers to an inheritable change in a population sensitivity, reflected through the consecutive failure of the chemical effects, correctly used to reach a desired effect on the target population.
The excessive use of antibiotics on the bacteria population leads to the fixation of new mutated genes -by natural selection-. The mutated genes make these cells even more resistant to the drug.
In the exposed example we have,
- Day 1 ⇒ a big population of white bacteria and only one black cell, probably <em>carrying mutated genetic material</em>.
The population was treated with antibiotics.
- Day 2 ⇒ there are fewer white bacteria and three black cells. This means that white bacteria are dying, while the black ones are reproducing.
The mutated phenotype gets to survive under the effects of the chemical.
- Day 3 ⇒ There are no more white bacteria. Only the black population survived and keeps reproducing.
The mutated bacteria reproduce with the capability of tolerating the antibiotic dose that is usually used to destroy a population of white bacteria.
- Day 4 ⇒ Black bacteria got to survive a produce a big population. Remember that <em>bacteria follow the exponential growth model, </em>meaning that their reproductive rate is too high. This black population survived the antibiotic action and reproduced at high rates.
