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3 years ago

Viruses have two main structures: a(n) _____ and genetic material.

2 answers:

ozzi3 years ago

8 0

These viral particles, also known as virions, consist of two or three parts: the genetic material made from either DNA or RNA, long molecules that carry genetic information, a protein coat, called the capsid, which surrounds and protects the genetic material.

vlada-n [284]3 years ago

4 0

Answer: C. capsid

Explanation:

All viruses have the same basic structure: a core of nucleic acid surrounded by protein. Individual viruses contain only a single type of nucleic acid, either DNA or RNA. Viruses are frequently classified by the nature of their genomes. RNA-based viruses are known as retroviruses. Nearly all viruses form a protein sheath, or capsid, around their nucleic acid core. The capsid is formed of one to a few different protein molecules duplicated many times. In some viruses, specific enzymes are stored within the capsid.

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3 years ago

agonists generally _______ activity at the synapse while antagonists generally ______ activity at the synapse.

ki77a [65]

Agonists activate the receptor thereby <u>increasing</u> activity at the synapse while antagonists generally prevent agonists from activating the receptors thereby <u>decreasing</u> activity at the synapse.

An agonist is the component that has the ability to increase the activity carried out by another substance.

The agonists work from their faculty of coupling to a cell-type receptor, in this way, they manage to generate a certain action in the cell.

The antagonists are the compounds that cause the opposite when they bind to the receptor, they cause a blockade by decreasing the activation of a synaptic receptor.

Therefore, we can conclude that agonists are compounds capable of increasing the action of synapse and blockers (antagonists) decrease activity at the synapse.

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2 years ago

What are the two theories that are combined in the synthetic theory of evolution?

Alika [10]

The Modern Synthetic Theory of Evolution combines the Darwinian theory of evolution with Mendel's genetic theory.

<h3>Synthetic theory of Evolution </h3>

The synthetic theory of evolution states that evolution are the changes occurring in the allele frequencies within the populations.

The theory explains that changes in the genes of organism are what causes the evolution of organism.

The Darwinian theory of Evolution states that organisms better adapted to their environment survive and give birth to offspring suited for their environment.

The Mendelian theory of genetics states that the combination and resassortment of genes are responsiblefor character inheritance.

Therefore, the Modern Synthetic Theory of Evolution combines the Darwinian theory of evolution with Mendel's genetic theory.

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2 years ago