细胞知道答案 上海科学技术文献出版社

细胞知道答案 上海科学技术文献出版社
细胞知道答案 上海科学技术文献出版社
细胞知道答案 上海科学技术文献出版社
细胞知道答案 上海科学技术文献出版社

细胞知道答案 上海科学技术文献出版社

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细胞知道答案 上海科学技术文献出版社

细胞知道答案 上海科学技术文献出版社

$34.70

 
Product Details
 
内容简介
自1994年出版以来,本套图书多次修订重印,深受读者喜爱,是学生家庭推荐图书。丛书的魅力来自于采用通俗易懂的问答形式,通过有趣的事实和精彩的花絮来解答人们感兴趣的各种问题。“什么叫细胞克隆?”“DNA和RNA是什么?”“细胞是什么时候演化成形的?”……这些常见的问题奠定了生物学的基础。《细胞知道答案》介绍了生物学中的化学知识、细胞的结构和功能、细菌、病毒和真菌等方面的基础知识。
目  录
前言
一生物学中的化学知识
基础知识
分子
代谢途径

应用
二细胞结构
简介及历史背景
原核细胞和真核细胞
细胞内部组织
细胞核
细胞质
细胞壁和质膜
在线试读
     一 生物学中的化学知识基础知识 基础知识 什么是生物化学? 化学,作为一个科学研究领域,可以分成不同的子学科。其中一个重要的子学科是化学,它主要研究含碳化合物括碳水化合物(例如淀粉)和碳氢化合物(例如甲烷和丁烷)等。在化学领域中,有一个分支专门研究对生物体至关重要的分子。这一分支就是生物化学。 什么是原子? 原子是化学反应中不可分割的基本微粒:原子小,小到这句话结尾处那个小小的句号就能容纳几百万个原子。 原子核与细胞核有何不同? 英文中“nucleus”(核)一词的字面意思是“在壳层里面”,来源于拉丁文表示“核心”的单词。原子核是原子当中的一个封闭夺间,里含有质子和中子。细胞核是一裹在细胞膜中的细胞器,里而含有细胞的遗传物质。 怎样区别不同的元素? 要将一种元素与另一种元素区分开.需要考察此元素原子的亚原子颗粒,即质子、中子和电子。每种元素都有特定数目的质子数,而这种特定的数字将确定元素的原子序数。所有的原子都含有相同数目的质子和电子。例如,氦元素的原子序数是2,因为它含有2个质子和2个电子。 生命体最重要的元素是什么? 对于生命体来说.最重要的元素是氧、碳、氢、氮、钙、磷、钾、硫、钠、氯、铁和镁。这些元素承担着不同的能,从而都对生命体系有着重要的作用,是生命体必需的元素。 什么是分子? 分子是由原子的特定组合形成的。例如,二氧化碳由一个碳原子和两个氧原子组成。水分子由两个氢原子和一个氧原子组成,原子问通过化学键连接。复杂的分子,例如淀粉可以由数百个原子按特定方式连接在一起: 什么是化学键? 化学键是处于特定原子的或原子壳中电子间的吸引力。这个又被称为价电子层=由于未填满壳层的原子相对不稳定,易于共享、接受或对外贡献电子,化学键就此形成。例如,在生命系统中,由酶控制的化学反应将原子连接起来形成分子。 化学键的主要类型有哪些? 化学键主要类型有三种:共价键、离子键和氢键(译者注:中国教材一般书写“化学键的主要类型足共价键、离子键和金属键”)。化学键的形成是由电子之间的特定排布所决定。当原子间共享电子时形成共价键,这种形式的键是的,在高能分子和某些对生命至关重要的分子中存在:当两个原子间交换电子时形成离子键,并且所得的键相对较弱;离子键主要在盐类物质中存在:氢键的存在是暂时性的,但是它们重要。一是因为它们对于某些特定蛋白质的形态具有至关重要的作用;二是因为它们还具有快速成形和重组的能力,就如它们在肌肉收缩过程中所表现的那样。下表就各种类型的行了解释并一一分析了它们的特点。 P1-3
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运费政策:目前,本店针对不同商品设置了不同的运费计算方式,实际运费金额请以结算页面为准,有任何疑问请及时联系官方客服(电话:400-072-0808)。

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Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

 
内容简介
自1994年出版以来,本套图书多次修订重印,深受读者喜爱,是学生家庭推荐图书。丛书的魅力来自于采用通俗易懂的问答形式,通过有趣的事实和精彩的花絮来解答人们感兴趣的各种问题。“什么叫细胞克隆?”“DNA和RNA是什么?”“细胞是什么时候演化成形的?”……这些常见的问题奠定了生物学的基础。《细胞知道答案》介绍了生物学中的化学知识、细胞的结构和功能、细菌、病毒和真菌等方面的基础知识。
目  录
前言
一生物学中的化学知识
基础知识
分子
代谢途径

应用
二细胞结构
简介及历史背景
原核细胞和真核细胞
细胞内部组织
细胞核
细胞质
细胞壁和质膜
在线试读
     一 生物学中的化学知识基础知识 基础知识 什么是生物化学? 化学,作为一个科学研究领域,可以分成不同的子学科。其中一个重要的子学科是化学,它主要研究含碳化合物括碳水化合物(例如淀粉)和碳氢化合物(例如甲烷和丁烷)等。在化学领域中,有一个分支专门研究对生物体至关重要的分子。这一分支就是生物化学。 什么是原子? 原子是化学反应中不可分割的基本微粒:原子小,小到这句话结尾处那个小小的句号就能容纳几百万个原子。 原子核与细胞核有何不同? 英文中“nucleus”(核)一词的字面意思是“在壳层里面”,来源于拉丁文表示“核心”的单词。原子核是原子当中的一个封闭夺间,里含有质子和中子。细胞核是一裹在细胞膜中的细胞器,里而含有细胞的遗传物质。 怎样区别不同的元素? 要将一种元素与另一种元素区分开.需要考察此元素原子的亚原子颗粒,即质子、中子和电子。每种元素都有特定数目的质子数,而这种特定的数字将确定元素的原子序数。所有的原子都含有相同数目的质子和电子。例如,氦元素的原子序数是2,因为它含有2个质子和2个电子。 生命体最重要的元素是什么? 对于生命体来说.最重要的元素是氧、碳、氢、氮、钙、磷、钾、硫、钠、氯、铁和镁。这些元素承担着不同的能,从而都对生命体系有着重要的作用,是生命体必需的元素。 什么是分子? 分子是由原子的特定组合形成的。例如,二氧化碳由一个碳原子和两个氧原子组成。水分子由两个氢原子和一个氧原子组成,原子问通过化学键连接。复杂的分子,例如淀粉可以由数百个原子按特定方式连接在一起: 什么是化学键? 化学键是处于特定原子的或原子壳中电子间的吸引力。这个又被称为价电子层=由于未填满壳层的原子相对不稳定,易于共享、接受或对外贡献电子,化学键就此形成。例如,在生命系统中,由酶控制的化学反应将原子连接起来形成分子。 化学键的主要类型有哪些? 化学键主要类型有三种:共价键、离子键和氢键(译者注:中国教材一般书写“化学键的主要类型足共价键、离子键和金属键”)。化学键的形成是由电子之间的特定排布所决定。当原子间共享电子时形成共价键,这种形式的键是的,在高能分子和某些对生命至关重要的分子中存在:当两个原子间交换电子时形成离子键,并且所得的键相对较弱;离子键主要在盐类物质中存在:氢键的存在是暂时性的,但是它们重要。一是因为它们对于某些特定蛋白质的形态具有至关重要的作用;二是因为它们还具有快速成形和重组的能力,就如它们在肌肉收缩过程中所表现的那样。下表就各种类型的行了解释并一一分析了它们的特点。 P1-3
商品详情

温馨提示:本店不会以“订单异常,系统升级,未付款成功”等等为由,要求您点击任何链接进行退款操作。有任何疑问请及时联系官方客服电话:400-072-0808(工作时间:9:00-22:00)现货商品下单后48小时内配发货,预售商品请单独下单。由于个别商品版本更新较快,我们在尽力保证同步更新商品信息的情况下,仍不可避免会偶尔出现实物与网页所示信息存在微小差别,如印次,开本,页数等,请以实物为准,介意者慎拍。特别说明:“当当价”为本店销售价格;“定价”为出版社全国统一定价。感谢您一直以来对本店的支持,我们将一如既往地为您提供优质的服务。

运费政策:目前,本店针对不同商品设置了不同的运费计算方式,实际运费金额请以结算页面为准,有任何疑问请及时联系官方客服(电话:400-072-0808)。

促销须知:本店所设一切促销均不支持团购,同一账号、同一地址、同一手机号、同一IP反复购买活动商品,本店有权取消订单,终结交易,请谅解。

预售商品须知所有预售商品,在到货后会按下单先后顺序第一时间为您发货,72小时内发货完毕,如遇特殊情况稍有延迟,敬请谅解。有任何疑问请及时联系官方客服(电话:400-072-0808)。

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

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