4.3. When does sperm production start in the male? 4.4. How far does a human sperm cell travel to fertilize an egg? 4.5. How fast can a sperm travel? 4.6. Why does the human sperm cell have lots of mitochondria? 4.7. What is the function of the head of the sperm? 4.8. What is...
答案:The discovery of spermaceti in the whale’s head.Ⅰ。将单词与其正确释义连线 1.anecdote A.锐利的;锋利的 2.accommodation B.浅的;肤浅的;浅显的相关知识点: 试题来源: 解析 If you come to visit China,you will experience a culture of amazing ___ (deep) and variety. 答案:depth反馈 收藏...
There are almost as many things to know about semen as there are individual sperm inside of it. Sure, we often talk about semen in the context of the reproductive process, but not everyone having sex is doing so with the goal of pregnancy. There's a whole world of semen beyond fertili...
What is the cell wall of members of Thallophyta made up of? How are cells organized? What do mast cells do? What parts of a cell provide the cell with energy? What is cell structure? What do chief cells secrete? What are cells that are in the testes aside from sperm? What cells ...
Spermatogenesis is the process of making sperm cells, or developing immature germ cells known as spermatogonia into mature sperm cells called spermatozoa. A sperm cell is the male reproductive cell that fertilizes the female egg in sexual reproduction. A male’s ability to reproduce depends on a ...
Ch 4. Parts of the Human Body for Elementary... Ch 5. Plants & Animals for Elementary... Ch 6. Cell Biology for Elementary School Cell Lesson for Kids: Definition & Types 2:53 Sperm Cell Facts: Lesson for Kids 3:39 What is a Nuclear Membrane? - Lesson for Kids Ch 7. Health...
What is a fertilized egg cell called?Question:What is a fertilized egg cell called?FertilizationWhen the sperm from a male meets the egg of a female, the egg becomes fertilized. This means it is now able to begin dividing and developing, eventually growing into a fully developed baby, ready...
What is a hybridoma cell made from? What is an organism made up of many cells called? What are epithelial cells in sperm? What organelles are abundant in endothelial cells? What do mitochondria do for epithelial cells? What is the living part of a cell?
But DNA is not the direct template for protein production. To make a protein, the cell makes a copy of the gene, using not DNA but ribonucleic acid, orRNA. RNA shares a similar structure to DNA, except it contains only one strand, rather than two — so it looks like just one half ...
But DNA is not the direct template for protein production. To make a protein, the cell makes a copy of the gene, using not DNA but ribonucleic acid, orRNA. RNA shares a similar structure to DNA, except it contains only one strand, rather than two — so it looks like just one half ...