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22. Carbon dioxide passes from tissues to blood to lungs by
.
A. diffusing from a region of high concentration to an area of lesser concentration.
B. diffusing from a region of lower to one of higher concentration.
C. active transport.
D. irreversibly binding hemoglobin.
E. chemiosmosis.
Ans. A

. 28. Mendel’s law of segregation reflects the fact that

A. linkage never occurs in peas.
B. alleles segregate differently in males and females.
C. each member of an allelic pair of genes enters a separate cell during meiosis.
D. during the course of development, DNA becomes segregated in the nucleus, RNA in the cytoplasm.



Could C be the ans?


34. One form of colorblindness is caused by gene c carried on the X chromosome in humans. The gene is recessive to its normal allele C. Far more men are colorblind than women. Geneticists explain this by pointing out that

A. women possess no X chromosomes in their cells.
B. men carry no genes for color vision on their Y chromosomes.
C. men carry more genes for colorblindness than women do.
D. colorblindness is inhibited by female sex hormones.
E. colorblindness is promoted by male sex hormones.


I picked B.

35. Several generations of 2 species of paramecia are observed reproducing at the same rate. It is noted that population A has fewer phenotypes over time than population
B. This most likely would occur if population B

A. has more surviving offspring.
B. has fewer individuals with recessive alleles.
C. reproduces asexually.
D. reproduces sexually.
E. has individuals with greater fitness.

My ans is A.

38. Embryonic induction is a process in which

A. embryonic tissues influence adjacent tissues to differentiate.
B. an unfertilized egg is induced to develop.
C. genes are transferred from one developing tissue to another.
D. resting potentials are induced in neurons of embryos.
E. the maternal parent induces expression of recessive genes in embryos.

My ans is A. Now for choice C, this would be the example of cell differentiation.

40. A deciduous forest biome differs from that of the grassland biome in that the forest biome receives more
.
A. sunlight.
B. CO2 for photosynthesis.
C. fixed nitrogen from the soil.
D. moisture.
E. ultraviolet light.

My ans. is A.

. 47. Which of the following types of bonding is found in a diamond?

A. Covalent
B. Hydrogen
C. Van der Waal’s
D. Metallic
E. Ionic

My ans. is A. Carbon-carbon bond.

 

[sunshine222]

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. 28. Mendel’s law of segregation reflects the fact that

A. linkage never occurs in peas.
B. alleles segregate differently in males and females.
C. each member of an allelic pair of genes enters a separate cell during meiosis.
D. during the course of development, DNA becomes segregated in the nucleus, RNA in the cytoplasm.



Could C be the ans?

yes, C is the answer.

.
.
35. Several generations of 2 species of paramecia are observed reproducing at the same rate. It is noted that population A has fewer phenotypes over time than population
B. This most likely would occur if population B

A. has more surviving offspring.
B. has fewer individuals with recessive alleles.
C. reproduces asexually.
D. reproduces sexually.
E. has individuals with greater fitness.

My ans is A.

I would say D - more phenotypes indicate recombination of genetic material.

.
.
40. A deciduous forest biome differs from that of the grassland biome in that the forest biome receives more
.
A. sunlight.
B. CO2 for photosynthesis.
C. fixed nitrogen from the soil.
D. moisture.
E. ultraviolet light.

My ans. is A.
.

I believe this would actually be D, moisture. Grasslands receive very little of it and deciduous forests receive quite a bit. Also, we can eliminate A because if A were true E would also be correct.