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KiRa [710]
3 years ago
11

When carbon dioxide is formed, one carbon atom forms double covalent bonds with two oxygen atoms. Carbon dioxide is considered

Biology
2 answers:
V125BC [204]3 years ago
8 0

Carbon dioxide is considered more stable than individual atoms as now the outer energy levels of all atoms are filled. Covalent bonds involve the sharing of electrons, and all bonds form in order to achieve more stability. The overall molecule will be more stable than the individual atoms. No atoms will bond together to become less stable.

miv72 [106K]3 years ago
6 0
<span>Carbon dioxide is a colorless and odorless gas that is vital to life on Earth. This naturally occurring chemical compound is made up of a carbon atom covalently double bonded to two oxygen atoms. Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about 0.04 percent by volume. Natural sources include volcanoes, hot springs and geysers, and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also in seawater. It is present in deposits of petroleum and natural gas.</span>
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_____ arise from a single fertilized egg and are thus genetically almost identical.
7nadin3 [17]

Answer:

Monozygotic twins

Explanation:

Monozygotic or identical twins are those that originate from a single ovary_ and a single sperm and therefore share the same genetic load.

What happens in these cases is that the embryo splits in two, and depending on the moment in which this happens, different configurations can be expected in the development of the placenta.

When the embryo is cleaved within the first four days after fertilization it results in a bicorial-biamnotic pregnancy, that means, two sacs and two independent chorions will be visible (exactly the same as in the case of dizygotic twins from two different embryos).

4 0
3 years ago
Read 2 more answers
Receptors trigger one of two effector pathways resulting in changes in neuronal activity. These changes will, ultimately, effect
kolezko [41]

Complete question:

Receptors trigger one of two effector pathways resulting in changes in neuronal activity. These changes will, ultimately, effect gene expression. Which effector pathway is characterized by ion flux through transmitter-activated channels resulting in an altered membrane potential and neuronal activity?

A.  Slow effector pathways

B.  Modulated effector pathways

C.  Rapid effector pathways

D.  NMDA glutamate receptor pathways

Answer:

D.  NMDA glutamate receptor pathways

Explanation:

The NMDA glutamatergic receptor is a cationic channel receptor modulated by a ligand that allows the transport of Na+, K+, and Ca2+. Under certain situations, it exhibits particular permeability to Ca2+. The receptor has different regions that are susceptible to modulation by endogenous and exogenous agents. The receptor can be found at most excitatory synapses, where it responds to the neurotransmitter glutamate. During synapsis, the presynaptic membrane releases L-glutamate, which is received by NMDA glutamatergic receptor. The receptor plays a regulatory role because activates signaling cascades that depend on calcium.

These receptors are involved in normal synaptic transmission, in a diverse physiological phenomenon, and might be responsible for neurodegenerative processes.

3 0
3 years ago
Describe the typical principles used to identify topogenic sequences within proteins and how these principles can be used to dev
Sonja [21]

Answer:

Topogenic sequences share a series of structural features, and thereby computational algorithms can be used to predict these protein-membrane segments  

Explanation:

Topogenic sequences are protein segments formed by alpha-helical transmembrane domains, which are required for the insertion of membrane proteins. These domains share a series of well-defined features: they are composed of segments of about 20 hydrophobic amino-acid residues. In consequence, computational algorithms can be designed to identify protein patterns that fulfill these structural requirements (i.e. segments with a length of 20 residues, hydrophobic level, etc). The models assign a similarity threshold (threshold value) that predict if the similarity level of the protein pattern is good enough to detect a topogenic segment.

6 0
3 years ago
Which laser listed below will allow you to detect all three insects listed below?
creativ13 [48]
We is the listed stuff 

6 0
3 years ago
A plant that is heterozygous for all three traits is crossed with a plant that is short, is heterozygous for seed shape, and is
nikitadnepr [17]

Answer:

1:2:1

Explanation:

If we cross heterozygous for all three trait with a plant  that is homozygous with the greenpods. so:

See attachment:

Conclusion:

The Heterozygous for all three traits will be : 50%

heterozygous for short seed shape: 50%

6 0
3 years ago
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