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Doctors Medicines MCQs Q&A

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Which of the following statements is/are correct? 1. In Intracytoplasmic sperm injection method ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and are induced to form zygote under simulated conditions in the laboratory. 2. In vitro fertilisation is a specialised procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum.
Egg is covered by a tough sheet of tissue that protects it from desiccation and infection by pathogens. But the same tissue also prevents sperm nuclei from encountering the egg nuclei. However, a part of sperm is known to release enzymes that digest this tough sheet. What part of sperm is it?
Rakesh and Reshma have difficulty conceiving a baby. They consulted a sex therapist. Sperm count of Rakesh was normal but the doctor observed that the motility of his sperm was less. What part of sperm do you think has the issue?
Consider the following statements regarding the origin of polyploidy and choose the correct answer:
1. The egg may be fertilized by more than one sperm
2. There may be a failure of mitosis
3. Triploids may arise as a result of fertilization of unreduced gametes
4. An autotetraploid may arise either by the doubling of chromosomes or fertilization between two different gametes
Fertilisation of sperm with the ovum takes place in
Consider the following statements.
1. When evaporation takes place, cooling takes place.
2. Evaporation takes place at all temperature, boiling takes place only at the boiling point.
3. Evaporation is a surface phenomenon.
Which of the statements given above is/are true?
In a six-digit number, the digit of thousands place is 4. The digit at ten's place is double that of digit at thousand's place and digit at hundreds places is half of the digit at thousand’s place. The digit at unit's place is half of the digit at hundred's place. Digit at Ten thousand's place is sum of the digits at thousands and hundreds place and digit at lakh's place is half the digit at ten thousands place. What will be the number?
What kind of reproduction is it when sperm and ovum fuse to form a zygote?
In the human being, normally in which one of the following parts, does the sperm fertilize the ovum?
The method of directly injecting a sperm into ovum in Assisted Reproductive Technology is called: