In which of the following ways are tRNA and mRNA

10 Jun In which of the following ways are tRNA and mRNA

Question

1:In which of the following ways are tRNA and mRNA different?

A: The mRNA repairs mistakes in the DNA while tRNA repairs proteins.

B:Only tRNA bends into a shape that can carry specific amino acids.

C:Only tRNA can come in contact with the ribosomes in the cytoplasm.

D: The mRNA uses uracil while the tRNA uses thymine in its place.

2:Mutation does not always affect the evolution of a species because

A:not all mutations are inherited

B:not all mutations are beneficial

C:not all mutations cause visible change

D:not all mutations affect an entire species

3:Which of the following mutations is least likely to develop into a cancerous tumor?

A: A non-disjunction mutation

B:A chromosomal deletion mutation

C:A inversion chromosomal mutation

D:A single point mutation

4: The mutagens that result in cancer damage DNA by

A:destroying the cell’s p53 gene directly thereby increasing cell production

B:weakening the DNA strand or interfering with base paring

C:altering the cell’s pH and allowing increased cell production

D:becoming a virus that attacks DNA directly, impairing duplication

16: Individuals can take a course of antibiotics to help their immune system fight bacterial diseases. Which of the following best explains why these antibiotics may lose their effectiveness against certain bacteria?

A: Antibiotics have become diluted and weak because of a limited supply.

B:Resistant bacteria are polyploidy and can resist the antibiotic, a trait that is passed on to their offspring.

C: Some bacteria have randomly mutated to resist the antibiotic, and this resistance is inherited.

D:Bacteria have purposefully directed their immune system to resist the effect of the antibiotic.

5:Some portion of the milk produced in the United States comes from cows treated with genetically manipulated hormones that increase a cow’s milk production. This increased production helps farmers make a better return on their investment in each cow. What aspect of this biotechnology must be fully understood before the benefits can be justified?

A:Its effect on the cost of production

B:Its effect on other animals in the dairy

C:Its effect on the offspring of the cow

D:Its effect on consumers of the milk

6: What issues will society need to resolve regarding this developing biotechnology, such as recombinant DNA technology?

A:The issues regarding the cost of these procedures for patients

B:The question of who gets to benefit from these technologies

C:The issues surrounding its lack of medical benefits

D:The question of the long-term effects on consumers and the targeted species

7:Shannon goes to the doctor complaining of symptoms of a sinus infection. She has frequent headaches around her eyes and complains of dizziness. Why would her doctor ask for details of her family medical history if Shannon believes she only has a sinus infection?

A:The family history may suggest another cause that should be investigated.

B:The family history may require other members of her family to be treated as well.

C:The family history is only for medical insurance issues.

D:The family history is gathered only when the problem has not been diagnosed

8: Mayra’s maternal grandfather and two maternal uncles died of heart attacks and her mother has high blood-pressure. Which answer best explains what this means for Mayra?

A:Mayra should be put on preventative medication immediately.

B:Mayra should not worry as most of her affected relatives were male.

C:Mayra should begin restricting her activities right away.

D: Mayra should be checked regularly for heart-related problems.

9: Which of the following would most severely affect a human population?

A:A high degree of genetic similarity among people

B: A high degree of illegal drug use among young adults

C:A high number of smokers in a community

D:A high rate of mental disorders

10:”Strep throat” is a streptococcus infection caused by an easily spread bacteria. If you happen to catch strep throat, what would be the most effective way to prevent giving it to other members of your family?

A:Have everyone wash hands often and cover your mouth when you cough or sneeze.

B:Start an exercise program immediately for all who are not yet infected

C:Start everyone in the family on cold and flu medications right away

D:Have everyone take vitamin C tablets twice a day until the infection is gone.