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number 4

Authored by Khắc Nguyễn

Biology

University

Used 6+ times

number 4
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The structure is the neck of the sperm/spermatozoon, which is located between the head and middle piece

The structure is the neck of the sperm/spermatozoon, which is rich in mitochondria.

The structure is the neck of the sperm/spermatozoon, which is rich in proteolytic enzymes.

The structure is the neck of the spermatid, which is located between the head and middle piece

The structure is the neck of the spermatid, which is located between the head and tail

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The structure is the middle piece of the sperm/spermatozoon, which is located between the neck and tail.

The structure is the middle piece of the sperm/spermatozoon, which does not contain mitochondria.

The structure is the middle piece of the sperm/spermatozoon, which contains proteolytic enzymes for the fertilazation.

The structure is the middle piece of spermatid, which is rich in mitochondria.

The structure is the middle piece of the spermatid, which is located between the head and tail. the notochord.

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Choose the three correct statements!

Only the capacitated sperm cell is able to pass through the corona radiata

The acrosome reaction allows sperm to penetrate the zona pellucida

The acrosome reaction results in the release of enzymes

The acrosome reaction occurs in the testis

The acrosome reaction occurs in the cavity of uterus

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Choose the only correct statement!

The acrosome reaction results in release of acrosin and trypsin-like substance from the sperm cell

cell The acrosome reaction results in release of acrosin and trypsin-like substance from the zona pellucida

The acrosome reaction results in release of trypsin-like substance from the oocyte

The acrosome reaction results in release of acrosin from the oocyte

The acrosome reaction results in release of cortical granules from the polar bodies

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following processes prevents the polyspermy? One correct answer.

As a result of release of lysosomal enzymes from the cortical granules of oocyte, the oocyte membrane becomes impermeable to other sperm cells.

As soon as the sperm cell has entered the oocyte, it starts to produce proteolytic enzymes.

As soon as the sperm cell has entered the oocyte, the zona pellucida begins to secrete acrosin.

As a result of zona reaction, the oocyte begins to secrete acrosin.

As a result of zona reaction, the oocyte and sperm cell begin to secrete acrosin.

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Choose the four correct statements

The syncytiotrophoblast release proteolytic enzymes which help the implantation.

Lacunae of syncytiotrophoblast contain maternal blood.

The syncytiotrophoblast contributes to the formation of placenta

The syncytiotrophoblast is the outermost layer of the late blastocyst

The syncytiotrophoblast is the innermost layer of the late blastocyst

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Choose the three correct statements!

The outer layer of the blastocyst is the trophoblast, which gives rise to the cytotrophoblast and syncytiotrophoblast layers.

The syncytiotrophoblast is the outer, multinucleated part of the blastocyst.

The cytotrophoblast is the inner, mononuclear part of the blastocyst.

The syncytiotrophoblast is the inner, multinucleated part of the blastocyst.

The cytotrophoblast is the outer, mononuclear part of the blastocyst.

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