Answer:
B
Explanation:
blood only absorbs end products of digested food .
The number 45 means that the subject has 44 normal autosomal chromosomes (22 chromosomes pairs) plus one (1) good sex chromosome (out of the normal homologous pair). The X0 means that the subject, usually a female, lacks one sister chromosome of the homologous X chromosome pair, or has a partial X sister chromosome.
Penetration of the egg' zona pellucida by the sperm cell is a process driven by hydrolytic enzymes.
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The critical step in fertilization is binding between sperm receptors and glycoproteins on the zona pellucida. This is the trigger for the acrosome reaction which includes an influx of CA and a rise in pH and cAMP levels within the sperm head. As a result, the plasma membrane of the sperm fuses with the outer acrosomal membrane and the exocytosis of the acrosomal<span> vesicle occurs. Components of the acrosome, like hydrolytic enzymes, are released and they degrade the <span>zona pellucida allowing</span> the sperm to move </span>inside.</span>
Answer:
antimicrobial peptides
Explanation:
Antimicrobial peptides are short-chained amino acids that are produced as a result of the innate immune defense which can kill various pathogens such as bacteria, viruses, and fungi.
The structure of these antimicrobial peptides consists of a large portion of hydrophobic residues along with positively charged residues such as arginine and lysine.
Antimicrobial peptides employ the use of various mechanisms to combat the pathogens that enter the body. Some of these mechanisms are ;
1. Destabilizastion of membrane.
2. Formation of transmembrane channels
3. Functioning as immunomodulators.
The two basic factors which are most important in determining the current appearance of a star are its mass and its stage of life. Stars are born with 75% Hydrogen and 25% Helium, with no more than 3% of that being heavier elements. A star burns its supply of elements over its lifetime, the larger the mass of the star then the greater it's brightness, luminosity and surface temperature will be. Dependant on the stage of the star's life, the color of the light will change.
