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Which one of the following statements about human sperm is correct?
1. Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation
2. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
3. Acrosome serves as a sensory structure leading the sperm towards the ovum
4. Acrosome serves no particular function.
The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
Define Cancer - excessive fat intake? Role of fat in cancer is debatable. High fat intake is indicated as a risk factor to cancer of breast, colon etc. Saturated fat intake has
Discuss in brief about maxillary sinus In normal conditions, the maxillary sinus maintains a close relationship with the alveolar ridge associated with second premolar and fir
Similarities in body parts often indicate shared ancestry. Which of the following is true? Structures used for different purposes in different groups can be controlled by the same
What are the synthetic auxins and what are their uses? The Synthetic auxins like naphthalenic acid (NAA) and indolebutyric acid (IBA) are substances similar to IAA (a natural a
Explain about the Zone Electrophoresis? Zone electrophoresis which was introduced about a decade later describes the migration of charged macromolecules in a porous supporting
#question.which annelids shws bioluminescence .
Define the Protective of Vitamin C role as an antioxidant? Vitamin C is a powerful antioxidant because it can donate a hydrogen atom and form a relatively stable ascorbyl free
On average what is the life duration of the red blood cells? Where are they destroyed? What is the destination of the heme groups after the destruction of hemoglobin molecules?
structure explanation of unit membrane model
Structure of the Conduction System of the Heart Sinoatrial (SA) Node is the pacemaker node located in the right atrium near the opening of superior venacava. It is called
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