Answer:
A law is a fact because it cannot be changed. A theory on the other hand can be changed over the course of time.
Explanation:
Mary can only receive blood from O+ & O- blood group but not from her husband (B-) or daughter (B+).
<h2>Description of Mary's blood group</h2>
Mary's blood group is O+ as her husband is B- and her daughter is B+.So, it can be said that the daughter's positive(+) antigen should come from her mother (Mary).
AS O blood groups lack A and B antigens, it can donate blood to all other groups and cannot receive from all groups as it has A and B antibodies in the serum.
<h3>Universal Donor</h3>
- Blood donors with type O- (O negative) red blood cells are known as universal donors, because their red blood cells may be used by people of any blood type.
- Transfusions from O-positive(O+) or O-negative(O-) blood types are the sole options for those with O-positive (O+) blood.
Therefore it can be concluded that Mary's blood group is O+ and she can receive blood from O+ and O- groups only.
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Hydrophobic amino acids are buried at the core of a water-soluble globular protein.
<h3>What makes globular proteins water soluble?</h3>
Numerous hundreds to thousands of amino acids are used to make proteins. The arrangement of amino acids within a protein molecule determines its ultimate form. A protein molecule is classified into two classes—fibrous proteins and globular proteins—based on its final shape.
The structure of globular proteins resembles a ball or a globe. A globular structure is created by the folding of different amino acid chains. The two most significant globular proteins present in the human body are hemoglobin and myoglobin. The hydrophobic side chains of the amino acids are hidden inside the cores of the domains whereas the hydrophilic side chains are located on the surface of the molecule thanks to the arrangement of the amino acids.
The hydrophobic amino acids can be buried in the center of globular proteins due to interactions between the hydrophobic groups in their side chains. This is the fundamental property of globular proteins that makes them water soluble.
Examples of hydrophobic amino acids are phenylalanine, alanine, valine, etc.
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Answer:
Instrumental learning
Explanation:
Associative learning is a form of learning which is performed when two or more events or stimuli controls the learning behaviour. The instrumental learning is a type of learning in which the learning process is associated with the consequence or result of the action.
In the given question, the mouse learns how to step on the lever as a result of the received food in the form of reward or he learned because he received the treatment, therefore, this act of learning will be considered the instrumental learning.
Thus, Instrumental learning is correct.
Answer:
It has four layers and attach with each other with desmosome.
Explanation:
The keratinocytes are arranged in four different layers which are the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum. These cells are attached with desmosome which is a membrane protein. The presence of these four layers made a barrier against damage done by heat, UV radiation, water loss, pathogens etc. There are fewer cells at the end of the time as compared to the start because may be of the water pressure on the membrane or these cells for a long time.
