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hjlf
2 years ago
7

Helppppp me pleaseee I don’t understand

Biology
1 answer:
Triss [41]2 years ago
3 0
The second one because there is no solute outside for the water to move towards. It will go inside and it may explode
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During the process of mammalian fertilization, a sperm cell encounters glycoproteins in the gelatinous extracellular matrix that
LiRa [457]

Answer:

Carbohydrates, particularly glycoproteins act as ligands for cell surface receptors.

Explanation:

Glycoproteins

  • Glyproteins are conjugate molecules comprising of carbohydrates conjugated with proteins.
  • Glycoproteins play a vital role in cell-cell recognition, pathogen recognition and and cell adhesion.
  • Glycoproteins on the surface of pathogens act as prominent antigens for the immune system.

Glycoproteins in Fertilization:

Several glycoproteins are attached to the surface of the zona pellucida, the envelope of the oocyte. In humans, these have been termed as ZP1-4.

Glycoprotein-sperm interaction is one of the most crucial steps in fertilization. This receptor-ligand interaction ensures the entry of the sperm into the zona pellucida, the extracellular coat, covered in glycoproteins that surrounds the oocyte or egg.

Carbohydrate binding proteins present on the surface of the sperm recognize the glycoproteins on the zona pellucida (ZP). This enables them to adhere to the surface of the ZP and also to gain access to the oocyte.

3 0
3 years ago
The process in which the floors of a building collapse on one another is known as
dimaraw [331]
The process in which the floors of a building collapse on one another is known as a pancake collapse. This will make the correct answer here B, pancaking.
4 0
2 years ago
Research the effect of insulin on blood sugar after a meal. You may use outside sources. Select the correct statement. Insulin h
butalik [34]

Answer:

Insulin reduces blood sugar.

Explanation:

Insulin is an hormone produced naturally in the pancreas organ of the body. Insulin is majorly involved in digestion where it helps in the absorption process. Insulin aids the absorption of glucose by cells.

When a meal is eaten, the food digests and breaks down into GLUCOSE, which enters into the blood stream via the small intestine. Insulin ensures that the sugar (glucose) content in the blood REDUCES by moving glucose into cells for respiration (energy production) and storing the excess glucose as glycogen in the liver cells.

5 0
3 years ago
Which are consumers within a spruce-fir forest ecosystem? A.mushrooms B.red squirrels C.limber pine trees D.bristlecone pine tre
Brrunno [24]
I'll answer number 3 for you. 

Which are decomposers within a spruce-fir forest ecosystem? 
the answer is mushrooms. 
Some mushrooms are known for growing over dead things..... I think. 
7 0
2 years ago
Read 2 more answers
How many atoms of hydrogen are in NH3? *<br> 1<br> 2<br> 3<br> 4
Georgia [21]
Three hydrogen atoms
8 0
3 years ago
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