If the cell membrane does not allow the water or solute particles to pass through it then the cell will be deficient in those particles which could even lead to the deathof cell.
The animal cell has an outermost covering which is known as the cell membrane or the plasma membrane. It is selectively permeable in nature. It only allows some solute particles to move across it. The cell membrane does not allow all the particles to move across it, as a result the restricted particles requires a protein or ligand through which it can cross the membrane.
Cell membrane is made up of phospholipids and membrane proteins. Their is a lipid-bilayer in which some proteins are embedded are known as integrated proteins and some are present on the membrane. Cell membrane is present in all types of cells, however a cell wall is also present in plants outside the cell membrane.
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Answer:
The large molecules made up of small monomers are called macromolecules.
Explanation:
In biochemistry macromolecules are the complex molecules that are formed by the polymerization of simple monmeric subunits.
For example
Polysaccharides are formed by the joining monosaccharides by glycosidic linkages.
Protein or polypeptides are formed by the joining of amino acids by peptide bonds.
Lipids are composed of fatty acid monomers
Nucleic acid such as DNA and RNA are formed by the joined of their monomeric subunits a;so called nucleotides by phosphodiester linkage.
habitat. Use the slider to compare
its ranges in the past and today.
Why do you think the range may
have changed?
The ranges of the Greater sage-grouse have changed over time due to the expansion of human civilizations.
The Greater sage-grouse is a large hen-like bird that resides in sagebrush-covered areas. The ranges that this wild bird inhabits have historically spanned all throughout the United States and parts of Canada, including:
and many other states.
The current range of the greater sage-grouse now only spans the Western United States and parts of Canada. This decrease in range is due to loss of habitat, interrupted migration patterns by the construction of roads, power lines, etc., and other human disturbances.
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Answer:
The population of sage-grouse decreases with the passage of time because of humans.
Explanation:
In the past, long time ago the population of sage-grouse bird were in millions in the Western United States of America and Canada but gradually decrease occurs in population with the passage of time due to the change which occurs in the environment by humans. Destroying the natural habitat for making buildings and for energy development decrease the population of sage-grouse from 16 million to 500,000 during 100 years.
More recently than Darwin's theory some scientists have discovered the identity of the Last Universal Common Ancestor (LUCA)
Answer:
B
Explanation:
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Group of answer choices
Smaller in diameter
Cooler and brighter
Brighter and hotter
Less bright, but hotter
Answer:
Observations, Hypothesis, Prediction, Conclusions, etc.
Explanation: