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Final Pt. 2

暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。

卡片总数: 8 张•内容版本: v4•公开卡包•更新时间: 8/1/2026

卡片预览 (8 张)

#1
正面 (问题)

What is a operon?

背面 (解答)

unit of genetic function found in bacteria, consisting of a promoter (more than one gene) , an operator (ON/OFF switch), and a coordinately regulated cluster of genes whose products function in a common pathway

#2
正面 (问题)

Inducible vs. Respressible operon

背面 (解答)

Inducible- usually off, turn on (catabolic) Repressible- usually on, repress (anabolic)

#3
正面 (问题)

steps of TRP repressible operon?

背面 (解答)

• up tryphotfan • active trp repressor, binds to operator • low transcription by RNA Poly 3 • low trp pathway enzymes • low trp systheisi

#4
正面 (问题)

steps of lactose inducible operon?

背面 (解答)

• up lactose • up allolactose, binds to repressor • down active lac repressor • up transcription by RNA Poly 3 • up lactose enezyme path • up hydrolysis of lactose to glucose

#5
正面 (问题)

allosteric inhibtion?

背面 (解答)

binds to inactive form of portein to keep inactive

#6
正面 (问题)

histone aceytlation?

背面 (解答)

increases avlibtliy of euchromation

#7
正面 (问题)

histone methylation?

背面 (解答)

decreases avalibility of DNA- more heterochromatin

#8
正面 (问题)

DNA methylation often occurs in-

背面 (解答)

logn stretches of C and G