Answer: The father determines the biological sex of a baby
Explanation: Human beings have two sex chromosomes, males have XY chromosomes whereas females have XX chromosomes. During fertilization, an egg from a woman fuses with a sperm cell from a man to form a zygote. Women have two X chromosomes (XX) and any point in time they can only release an egg bearing an X chromosome but males have one X and one Y chromosome, therefore they can either release a sperm cell with an X chromosome or a sperm cell with a Y chromosome. When an egg with X-chromosome fuses with a sperm cell with an X chromosome, the resulting baby is a female but when an egg with an X chromosome fuses with a sperm cell with a Y chromosome, the resulting baby is a male.
What makes the difference in both sexes is the Y chromosome from the man, therefore the father determines the biological sex of a baby.
Answer:
<h2>Postsynaptic </h2>
Explanation:
Acetylcholine receptor is a kind of integral membrane protein that has a very important role in the binding of neurotransmitters such as acetylcholine and some other. Generally, these receptors are present on the postsynaptic cells to receive acetylcholine neurotransmitter to initiate the signal in the neurons cells and some other.
Acetylcholinesterase is a kind of important enzyme that has many important functions in the dissociation of acetylcholine and some other that function as neurotransmitters. This enzyme is also present in the postsynaptic cells.
Answer:
3. 2
Explanation:
Zimbabwe is a South African Country. This means Zimbabwe is definitely located around the southern part of Africa. It is also surrounded mostly by land, which means it is a landlocked country.
Also, it is a neighbor to the country of South Africa.
Therefore, the only possible location of Zimbabwe is the location numbered 2.
I believe it is class, because species are divided into different classes, but families, for example: there's the cat family, and there's the dog family. classes: the carnivores, herbivores, omnivores OR mammals, egg laying, or hermaphrodites
Solution:
People that born with hemophilia lack or have a low amount of a clotting factor.
Coagulation factors are proteins necessary for normal blood clotting.
Coagulation factors are found in blood plasma. These factors act with Thrombocytes to clot blood.
However, hemophilia is not a decrease in Thrombocytes but a decrease in coagulation factors due to genetic causes.
Diagnosis includes screening tests and clotting factor analysis. Screening tests are blood tests that show whether the blood is clotting properly. Clotting factor tests can reveal a deficiency of clotting factors in the blood plasma and determine the level of severity of hemophilia.
As the coagulation factors are in Blood plasma, we can conclude that the correct answer is:
BLOOD PLASMA
