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Why do marine organism living in polar regions have a very high proportion of cholesterol in their membranes?
Organisms living in extremely cold temperatures run the risk of hypothermia and even their cells freezing. Cellular membranes with more cholesterol help insulate the organism and are less prone to freezing.
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Why are reptiles rarely found in the polar regions?
There are no reptiles in the polar regions it is too cold for them as they are cold blooded.
How might humidity influence the type of organisms in a region?
Humidity will affect how an organism is able to adapt to its environment. For example a plant may adapt itself to only needing little moisture. If the organism can not sustain its life through adaptation it will die.
What question did Charles Darwin answer?
Why do different regions have different organisms
What part is the most muscular part of the digestive system in a pig?
The most muscular part of the digestive system in a pig is the stomach. The stomach is made up of four regions, which are the oesophageal, cardiac, fundic and pyloric regions.
What are the 3 main body regions of a fish?
The main body regions of a fish are the head, trunk, and tail. The head contains sensory organs and feeding structures, the trunk is where the main body organs are located, and the tail provides propulsion for swimming.
Why does marine organism living in polar regions have high proportion of cholesterol in their membrane?
Marine organisms living in polar regions have a very high proportion of cholesterol in membranes to keep the membranes more fluid and keep the molecules moving faster because in cold temperature, molecules move slower.
Why do marine organisms living in polar regions have a very high proportion of cholesterol in their membranes?
Organisms living in extremely cold temperatures run the risk of hypothermia and even their cells freezing. Cellular membranes with more cholesterol help insulate the organism and are less prone to freezing.
Why do marine organisms living in polar regions have a very high proportion of cholesterol in their membrane?
Marine organisms living in polar regions have a very high proportion of cholesterol in membranes to keep the membranes more fluid and keep the molecules moving faster because in cold temperature, molecules move slower.
What are the regions of the chloroplast outside the thylakoid membranes?
stroma
Which statement most accurately explains why cholesterol and phospholipids are amphipathic but fats are not?
Cholesterol and phospholipids contain both hydrophilic and hydrophobic regions; fats are primarily hydrophobic. Save
Which organism has two body regions?
An arthropod, such as an insect or a crab, typically has two distinct body regions: the head and the thorax-abdomen region. These distinct body regions allow for specialization of different functions within the organism.
What do we call Organisms with two body regions?
An organism with more than one part to it is called a complex organism or multi cellular organism
The what Are regions in an organism DNA that encode information about heritable traits?
Regions in an organism's DNA that encode information about heritable traits are called genes. Genes are specific sequences of nucleotides that contain the instructions for making proteins, which are responsible for the traits and characteristics exhibited by an organism. These genes are passed down from one generation to the next and play a crucial role in determining an organism's phenotype.
What Are nonpolar macromolecules found in cell membranes they prevent ions from freely entering cells.?
Nonpolar macromolecules found in cell membranes primarily include lipids, such as phospholipids and cholesterol. These molecules form the lipid bilayer, which acts as a barrier to ions and polar molecules, preventing them from freely entering or exiting the cell. The hydrophobic (water-repelling) nature of these nonpolar regions restricts the passage of charged particles, thereby helping to maintain the cell's internal environment. This selective permeability is crucial for cellular function and homeostasis.
What type of mutation is less harmful to an organism?
A silent mutation is less harmful to an organism because it does not change the amino acid sequence of the resulting protein. This means that the protein's function is not altered by the mutation, minimizing its impact on the organism's health and survival.
What is the genetic makeup of an organism?
The genetic makeup of an organism refers to its complete set of genes, including both the coding and non-coding regions of its DNA. This genetic information determines an organism's characteristics, traits, and behavior. The genome of an organism is composed of DNA molecules that contain the instructions for building and functioning of that organism.
What molecules in membranes allow lipids and water to mix?
Phospholipids are the main molecules in membranes that allow lipids and water to mix. They contain both hydrophobic (lipid-loving) and hydrophilic (water-loving) regions in their structure, enabling them to form the basic structure of cell membranes. The hydrophilic head interacts with water, while the hydrophobic tail interacts with lipid molecules.
