幾題Brooker跟大家討論~ - 考試

1.The role of testosterone in male reproductive function include all of the

following EXCEPT

這題答案給 stimulating spermatogenesis by Leydig cells

我覺得有點問題,因為 LH -> Leydig cell -> testosterone -> Sertoli -> 精子生成

大家因該有學過此機制吧~


2. What features of meiosis allow for independent assortment of chromosome?

A.random alignment of homologous sister chromatids on the metaphase plate.
B.separation of sister chromatids
C.reduction of chromosome number from diploid to haploid
D. B+C
E. A+B+C

此題答案為A~
題目要問的是獨立分配律是何者?給A我覺得好像對又不對,因為獨立分配律不就是
在減數分裂I時,同源染色體分開,非同源染色體可任意組合到個子細胞中~;而A選項
中random alignment of homologous sister chromatids已經講到減數分裂II去了,
請問是我對獨立分配律的見解有問題嗎?

3. Which of the following is not a way that bacteria benefit human?

A.produce foodstuffs such as cheese
B.produce antibodies
C.break down substance harmful to human, such as waste, toxin, explosives
and petrochemicals
D.kill harmful insect
E.transfer nutrient across instinal membrance.

這題答案為E,但沈老大他說要把答案給為C,我覺得老師錯了,因為在題庫的下一題
就有說C選項是一種生物調節,如此看來對人類當然有利~大家怎麼看呀~

以下是是非題

4.In terms of cell signaling estrogen in animal cells works in a similar
fashion as the plant hormone auxin via binding to intrecellular receptor.

答案是TURE~

我認為答案錯了~auxin的受體是在膜上吧~

5.Maternal effect genes are inherited via the mitochondria.

答案是FALSE~

我認為母效基因的確可在粒線體,所以一些粒線體引起的疾病大多是因母親方面所提供的
卵裡有錯誤的DNA,大家覺得呢?

大家加油囉~

希望這些問題可以出現在考題上,大家看到賺到^^~

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