Question

True/False:

17.  About 90% of the fluid filtered by the kidneys is excreted as urine.

18. The C-section rate in America is about 10%.  

19.  Meiosis differs from mitosis because mitosis produces gametes.  

20.  The diploid number in humans is 46 (23 pairs) of chromosomes.  

21. A mother’s use of cigarettes and alcohol is most damaging to the fetus during the third trimester of pregnancy.

22.  It is possible for healthy individuals to be carriers for a dominant genetic disease.

23.  “Phenotype” refers to the allelic composition of an individual while “genotype” is what is expressed.  

24.  Transcription refers to the process of transferring DNA sequence information to RNA.

25. There is little scientific consensus regarding the idea that current global climate change is largely human-induced.

26.  The term “anthropogenic” refers to changes in the environment that are naturally-occurring.  

Answer 1

Ans.17. The given statement is false statement.

EXPLANATIONS:- The 90% of the fluid filtered by kidney are reabsorbed. It is not excreted. It is absorbed in the PCT, loop of Henle, DCT and collecting ducts.

Ans.18. The given statement is false statement.

EXPLANATIONS:- In Americans, the C section rate is not 10% ,, it is about more than 25%.

Ans.19. The given statement is false statement.

EXPLANATIONS:- Mitosis doesn't produce gametes, it is responsible for production of somatic cells.

Ans.20. The given statement of true statement.

EXPLANATIONS:- Human diploid cells has 46 chromosomes or 23 pair of chromosomes.