Answer:
What is true of natural selection? A. Natural selection is a random process. B. Natural selection creates beneficial mutations. C. The only way to eliminate harmful mutations is through natural selection. D. Mutations occur at random; natural selection can preserve and distribute beneficial mutations.
The answer is D
Explanation:
natural selection can simply be explained as individuals that have specific inheritable traits will most likely tend to adapt and survive and as well reproduce at higher rates than others. mutation occurs when the nucleotide sequence of an organism changes. so natural selection can preserve and distribute beneficial mutations.
Answer:
Explanation: Protein digestion occurs in the stomach and the duodenum through the action of three main enzymes: pepsin, secreted by the stomach, and trypsin and chymotrypsin, secreted by the pancreas. During carbohydrate digestion the bonds between glucose molecules are broken by salivary and pancreatic amylase.
The shoot systems includes nodes, inter nodes, lateral bud, and stem is TRUE!
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A and B smog is a type of air polution
The cell membrane is made of two layer of phospholipid called phospholipid bilayer. Phospholipid has a hydrophilic head and hydrophobic tail. The hydrophilic head stick out on the membrane, pushing polar substance that go inside. Hydrophobic substance would be easily pass through the membrane while the hydrophilic doesn't.
If the active form of this drug is polar, then the substance would be hydrophilic. The drug should pass the membrane through active transport like carrier mediated transport or endocytosis.
