
七上生物_1-1 細胞的分裂01
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Medium
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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖為人體內某種細胞形成時,一細胞遺傳物質含量在細胞分裂過程中變化的情形,下列敘述何者正確?
Answer explanation
(B) 23 條染色體;(C)不同,此種細胞形成時,其染色體數目僅有肌肉細胞染色體數目的一半;(D)一次。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
水稻葉子的細胞核中有 24 條染色體,則其體細胞及配子中的細胞核內分別有多少染色體?
Answer explanation
水稻葉子的細胞屬於體細胞,細胞核有 24 條(12 對)的染色體;配子為精子或卵,細胞核內只有單套不成對的染色體 12 條。
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
關於減數分裂的敘述,下列何者正確?
一個細胞經過減數分裂後可形成 2 個細胞
分裂時,染色體不複製,直接分裂減半
人類有 48 條染色體,故精子或卵只含 24 條染色體
只發生於卵或精子形成時。
Answer explanation
(A) 4 個;(B)染色體先複製,再經 2 次的分裂;(C)人類體細胞有 46 條染色體,故精子或卵只含 23 條染色體。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若甲、乙、丙、丁代表細胞內遺傳物質含量的變化,下列敘述何者錯誤?
甲代表草履蟲行分裂生殖時遺傳物質含量的變化
乙代表精子與卵結合的過程中,卵細胞內遺傳物質含量的變化
丙代表細胞分裂的過程
丁代表減數分裂的過程。
Answer explanation
(A)草履蟲行分裂生殖是細胞分裂,是丙圖。
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
取甲、乙兩種母細胞,其分裂過程中遺傳物質含量變化如附圖所示。關於甲、乙細胞的分裂過程及其子細胞比較,下列何者錯誤?
甲細胞的分裂過程為減數分裂,乙細胞的分裂過程為細胞分裂
人類精子的形成需經過甲細胞的分裂過程
甲細胞所產生的子細胞,其染色體為單套;乙細胞所產生的子細胞,其染色體為雙套
在肌肉組織中均可找到甲、乙細胞。
Answer explanation
(D)在生殖器官中可找到甲、乙細胞。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
關於圖中細胞核內遺傳物質的敘述,下列何者錯誤?
(1)的同源染色體是(2)
(3)和o(4)是成對染色體
減數分裂產生的配子可能同時帶有(1)和(3)
如果(2)來自雄性親代,則(4)必定來自雌性親代。
Answer explanation
(D)如果來自雄性親代,則必定來自雌性親代。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知人類的卵細胞有 23 條染色體,則下列各細胞染色體數目何者正確?
皮膚細胞具有 23 條染色體
子宮壁細胞具有 23 條染色體
未進行減數分裂前的細胞具有 23 對染色體
肌肉細胞具有 23 條染色體。
Answer explanation
(A)(B)(D)未進行減數分裂前的細胞為雙套、成對的染色體。
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