ova

简明释义

英[ˈəʊvə]美[ˈoʊvə]

n. 卵细胞（ovum 的复数）

英英释义

单词用法

同义词

反义词

例句

1.With no potential pregnancy on the horizon, the brain can stop managing the release of ova.

如果近期没有怀孕，大脑就可以停止对排卵的干涉。

2.There is no significant difference between OVA group and DNA group, indicating that bare DNA is hard to express in the animals via airway.

而卵清蛋白致敏激发并给予裸DNA组与卵清蛋白致敏激发组比较差异无显著性，表明裸DNA难以通过气道内注入在活体动物气道表达。

3.I auditioned and they asked me what kind of music I was composing for the OVA.

我做了试听，他们问我将为OVA配上什么样的音乐。

4.An ic-ELISA for detecting fumonisin B2(FB2) of maizena was developed by using the coating antigen of OVA-FB2 and competitive antigen of FB2.

用卵清白蛋白与伏马菌素B2的偶联物（OVA-FB2）做包被抗原，标准伏马菌素B2（FB2）做竞争抗原，初步建立了检测玉米粉中伏马菌素B2的间接竞争ELISA方法。

5.The ova of earthworms are contained in cocoons.

蚯蚓的卵是包在茧里的。

6.A single stool sample for ova and parasites was negative.

一次大便找虫卵和寄生虫阴性。

7.The NO may play an important role in the pathogenesis of rectum ova granuloma.

NO在血吸虫直肠肉芽肿发病机制中具有重要作用。

8.Conclusion the NO may play an important role in the pathogenesis of rectum ova granuloma.

结论NO在血吸虫直肠肉芽肿发病机制中具有重要作用。

9.The scientist observed the development of the ova 卵子 under a microscope.

科学家在显微镜下观察了卵子的发育。

10.In many species, fertilization occurs when sperm meets the ova 卵子 in water.

在许多物种中，受精发生在精子与水中的卵子相遇时。

11.The female fish releases her ova 卵子 into the water during spawning.

雌鱼在产卵时将她的卵子释放到水中。

12.Research shows that the quality of ova 卵子 can decline with age.

研究表明，随着年龄的增长，卵子的质量可能会下降。

13.During the reproductive cycle, the female produces several ova 卵子 each month.

在生殖周期中，雌性每月产生几个卵子。

作文

In the study of biology, we often encounter various terms that describe the fundamental building blocks of life. One such term is ova, which refers to the plural form of ovum, the female reproductive cell in many organisms. Understanding the role of ova is essential for grasping the complexities of reproduction and development in both animals and plants. In this essay, I will explore the significance of ova in the reproductive process, their development, and their importance in the continuation of species. The process of reproduction is vital for the survival of any species. In animals, reproduction typically involves the fusion of male and female gametes. The male gamete is known as sperm, while the female gamete is referred to as ova. These ova are produced in the ovaries of females and play a crucial role in fertilization. When a sperm successfully penetrates an ova, it results in the formation of a zygote, which eventually develops into a new organism. The development of ova begins with oogenesis, a process that occurs in the ovaries. During this process, primordial germ cells undergo several stages of maturation to become mature ova. This transformation involves meiosis, a specialized form of cell division that reduces the chromosome number by half, ensuring genetic diversity in offspring. Each month, in many mammals, including humans, several ova begin to mature, but usually, only one reaches full maturity and is released during ovulation. The significance of ova extends beyond mere reproduction. They also carry the genetic material necessary for the development of a new individual. Each ova contains half of the genetic information from the mother, which combines with the father's genetic material during fertilization. This genetic exchange is what makes each new organism unique, contributing to the biodiversity of life on Earth. In addition to their biological importance, ova have significant implications in fields such as medicine and agriculture. In medicine, understanding the physiology of ova can lead to advancements in reproductive health, fertility treatments, and the management of conditions like polycystic ovary syndrome (PCOS). In agriculture, knowledge about ova can enhance breeding programs, allowing for the selection of desirable traits in crops and livestock. Moreover, the study of ova is not limited to animals; it also applies to plants. In flowering plants, the ovule, which develops into a seed after fertilization, is analogous to the ova in animals. The fertilization of ovules leads to seed formation, ensuring the propagation of plant species. This highlights the universal nature of ova and their essential role in the life cycles of all living organisms. In conclusion, ova are more than just biological entities; they are integral to the process of reproduction and the perpetuation of life on our planet. Their development, function, and significance in various fields underscore the importance of understanding these remarkable cells. As we continue to explore the intricacies of biology, the study of ova will undoubtedly remain a key area of interest, providing insights into the mysteries of life itself.

在生物学的研究中，我们常常会遇到各种术语，这些术语描述了生命的基本构建块。其中一个术语是ova，它是ovum的复数形式，指的是许多生物中的女性生殖细胞。理解ova的作用对于掌握动物和植物繁殖与发育的复杂性至关重要。在这篇文章中，我将探讨ova在生殖过程中的重要性、它们的发展以及它们在物种延续中的重要性。 生殖过程对任何物种的生存都是至关重要的。在动物中，生殖通常涉及雄性和雌性配子的融合。雄性配子被称为精子，而雌性配子被称为ova。这些ova是在雌性动物的卵巢中产生的，并在受精过程中发挥着关键作用。当一个精子成功地穿透一个ova时，就会形成一个合子，最终发育成一个新的生物体。 ova的发展始于卵母细胞发生，这是在卵巢中发生的过程。在这个过程中，原始生殖细胞经历几个成熟阶段，以成为成熟的ova。这一转变涉及减数分裂，这是一种特殊的细胞分裂形式，它将染色体数量减少一半，从而确保后代的遗传多样性。每个月，在许多哺乳动物中，包括人类，几颗ova开始成熟，但通常只有一颗达到完全成熟并在排卵期间释放。 ova的重要性不仅限于生殖。它们还携带着新个体发育所需的遗传物质。每个ova都包含来自母亲的一半遗传信息，这些信息在受精时与父亲的遗传物质结合。这种遗传交换使每个新生物体独特，促进了地球上生命的生物多样性。 除了生物学的重要性外，ova在医学和农业等领域也具有重要意义。在医学领域，了解ova的生理学可以推动生殖健康、治疗不孕症和管理多囊卵巢综合症（PCOS）等疾病的发展。在农业中，关于ova的知识可以增强育种计划，使能够选择作物和家畜中的优良性状。 此外，ova的研究不仅限于动物；它也适用于植物。在开花植物中，胚珠在受精后发育成种子，与动物中的ova类似。胚珠的受精导致种子的形成，确保植物物种的繁衍。这突显了ova的普遍性及其在所有生物生命周期中的重要作用。 总之，ova不仅仅是生物实体；它们是生殖过程和我们星球生命延续的核心。它们的发展、功能以及在各个领域的重要性强调了理解这些非凡细胞的重要性。随着我们继续探索生物学的复杂性，对ova的研究无疑将继续成为一个关键的兴趣领域，为揭示生命本身的奥秘提供见解。