The miller Spike Shamber Where did Stanley Miller hypothesize the site of chemical evolution? A. The atmosphere B. Volcanic mud pools C. Deepwater volcanic events D. Geyser pools
The following labels in order through which an unfertilized ova will pass beginning with the site of production.
- Ovary
- Infundibulum
- Ampulla
- Isthmus
- Fundus
- Body
- Cervical canal
- Vagina
<h3>What is an unfertilized ovum?</h3>
- A fertilized egg has merged with a sperm, but an unfertilized egg has not. It is referred to as the ovum in mammals. After fertilization, the embryo is produced. The secondary oocyte stage is where the unfertilized egg can be found.
- The egg disintegrates and the uterine lining sheds during your period if the egg is not fertilized. You can achieve or avoid pregnancy by being aware of when and how ovulation occurs.
- Scientists have successfully produced an eight-cell human embryo from an unfertilized egg, according to a research published in today's issue of the British science magazine Nature. In a three-day experiment, researchers from the British Medical Research Council and Edinburgh University reported that the embryo developed without male chromosomes.
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Answer:
B. Simple Cuboidal
Explanation:
Because the simple cuboidal epithelium consists of a single layer of cells that are as tall as they are wide. The important functions of the simple cuboidal epithelium are secretion and absorption. This epithelial type is found in the small collecting ducts of the kidneys, pancreas, and salivary glands.
Answer:
option C = Pb
Explanation:
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.
For example
The number of protons and number of electrons in lead are 82 and it shows its atomic number. while the number of protons plus neutrons are mass number which is 207.2 amu.
