The reward system in the brain is the center of wanting and pleasure, and is the main cause of repeated actions because of the release of some neurotransmitters which does ensure the survival of one's self and offspring. The behavior is a part of organism and organizational level, and neurotransmiters are part of the cellular level.
Answer:
The correct option is A) The introduction of a plant variety that is resistant to insect pests.
Explanation:
In ecological studies, gene flow can be described as the transfer of a genetic variant for of species from one population to another. It is also known as gene migration.
The phenomenon of gene flow allows to increase the genetic diversity of an area by the addition of a variant specie. This variant specie if favoured by natural selection will be able to survive and produces offsprings in the new area.
Answer:
no it's false because salmonella bacteria is commonly found undercooked pork.
Specificity is a property of the enzyme and describes how restrictive the enzyme is in its choice of substrate; a completely specific enzyme would have only one substrate. ... Consequently, a single serine protease may act on various substrates although at different rates.
Here is a example
Enzymes showing substrate specificity are specific only to one substrate and one reaction. Example: Enzyme lactase can only hydrolyze the β-1-4 glycosidic bond of lactose to yield galactose and glucose. Similarly, Maltase can only act on the α-1-4 glycosidic linkage of two glucose molecules in maltose..
Source of info: Goo gle
Answer:
Cancer is caused by accumulated damage to genes. Such changes may be due to chance or to exposure to a cancer causing substance. The substances that cause cancer are called carcinogens. A carcinogen may be a chemical substance, such as certain molecules in tobacco smoke.
Explanation: