動物細胞進行減數分裂的目的為何?

生物學測驗

Quiz
•
Science
•
10th Grade
•
Hard
910815陳昱宏 910815陳昱宏
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
複製各種細胞
產生生殖細胞,並確保代代相傳後,染色體數仍相同
促使細胞回到未分化狀態
將過大的細胞分裂成小細胞
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關生殖細胞分裂與成熟的敘述,何者錯誤?
一個精原細胞及一個卵原細胞經減數分裂後,可分別產生同數目的精子和卵細胞
初級卵母細胞中,同源染色體發生聯會現象
減數分裂後,精細胞需經變形過程,卵細胞則不需要
來自同一精原細胞的四個精細胞,均可變成精子
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者為人類染色體的成分?
DNA + RNA
DNA + 蛋白質
只有蛋白質
只有 DNA
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關細胞內染色質與染色體的敘述,何者錯誤?
染色體為細胞在分裂時緊密到的絲狀物
體細胞內同源染色體皆為成對出現
絲狀的染色質在細胞進行分裂時會緊密地纏繞,形成粗線狀的染色質
染色體內的蛋白質可協助 DNA 的纏繞
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若 (甲) 染色體排列於紡錘體中央;(乙) 細胞中央向內凹陷;(丙) 染色體複製產生兩條染色分體;(丁) 中心粒分裂為二,向細胞兩端移動。關於有絲分裂的順序下列何者正確?
甲乙丙丁
丙甲乙丁
甲丁乙丙
丙丁甲乙
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列關於遺傳物質構造的敘述何者正確?
染色質即為 DNA
染色體由 DNA 和蛋白質構成
姊妹染色分體其中一條來自父方,另一條來自母方
染色體的中央區域稱為中節
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者最能表示減數分裂的過程中染色體套數的變化?
2n → 2n → n
2n → n → 2n
n → n → n
2n → n → n
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