Answer:
The cell membrane is semipermeable because allows only certain molecules to pass through.
Explanation:
Semipermeability is a common property of cell membranes, due to their predominantly lipid composition, which gives them a hydrophobic character.
The cytoplasmic membrane is constituted by a double layer of lipids, in addition to structural proteins and glucides, which prevent the entry of polar or charged molecules. This characteristic allows lipids and small molecules without charge to pass freely through it.
Regarding the other options:
<em> A. Cell membranes are associated with lysosomes, structures that contain enzymes. However, this characteristic is not related to semipermeability.</em>
<em> C. They allow the passage of small molecules - devoid of charge - through them.</em>
<em> D. Not all non-polar molecules pass through, as some need a transporter.</em>
1. The correct answer is option A
The thickest layer is Dermis which is made up of two layers papillary and reticular. The reticular dermis is the lower layer of the dermis and is made up of dense irregular connective tissue featuring collagen fibers.
2. The correct answer is option E
Bone is composed of fibrous and mineralized connective tissues which is enriched in collagen and calcium phosphate.
3. The correct answer is option C
Muscles are composed of two major protein filaments: a thick filament composed of the protein myosin and a thin filament composed of the protein actin. These two filaments slide over each other to repetitively contract the muscles.
Answer:
Adolescence
Explanation:
(of a young person) in the process of developing from a child into an adult.
To make an argument about how environmental imbalance affects the ecosystem of the Chesapeake Bay, research on reliable sources on the topic is necessary.
<h3 /><h3>How is the Chesapeake Bay?</h3>
The bay corresponds to the largest ecosystem of estuaries in the USA, being a source of diverse types of habitat for wildlife, with more than 3,600 species of animals and plants.
An example of the environmental imbalance in the area is the commercial and recreational fishing of blue crab, whose population had a significant reduction in 2022.
Therefore, environmental factors and human exploration are responsible for generating such an imbalance, and the development of policies and actions to promote sustainability is essential.
Find out more about sustainability here:
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