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Mariana [72]
3 years ago
15

List 5 pieces of evidence for evolution

Biology
2 answers:
dedylja [7]3 years ago
8 0
Fossils
Vestigial structures
Homologous structures
Molecular evidence
Comparative embryology
-------------------------------------
Enjoy
Sergeu [11.5K]3 years ago
8 0
Fossils
Vestigial structures
Homologous structures
Molecular evidence
Comparative embryology
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g protein-activated inwardly rectifying potassium channels mediate depotentiation of long-term potentiation
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Long-term potentiation (LTP) is considered a cellular correlate of learning and memory. The presence of G protein-activated inwardly rectifying K(+) (GIRK) channels near excitatory synapses on dendritic spines suggests their possible involvement in synaptic plasticity. However, whether activity-dependent regulation of  channels affects excitatory synaptic plasticity is unknown. In a companion article we have reported activity-dependent regulation of GIRK channel density in cultured hippocampal neurons that requires activity oF receptors (NMDAR) and protein phosphatase-1 (PP1) and takes place within 15 min. In this study, we performed whole-cell recordings of cultured hippocampal neurons and found that NMDAR activation increases basal GIRK current and GIRK channel activation mediated by adenosine A(1) receptors, but not GABA(B) receptors. Given the similar involvement of NMDARs, adenosine  receptors, and PP1 in depotentiation of LTP caused by low-frequency stimulation that immediately follows LTP-inducing high-frequency stimulation, we wondered whether NMDAR-induced increase in GIRK channel surface density and current may contribute to the molecular mechanisms underlying this specific depotentiation. Remarkably, GIRK2 null mutation or GIRK channel blockade abolishes depotentiation of LTP, demonstrating that GIRK channels are critical for depotentiation, one form of excitatory synaptic plasticity.

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brainly.com/question/11985070

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8 0
2 years ago
Cell division occurs in which layer of the skin milady
vladimir2022 [97]
Mitosis and cytokinesis. In eukaryotes the processes of DNA replication and cell division occur<span> at different times of the </span>cell division<span> cycle. During </span>cell division<span>, DNA condenses to form short, tightly coiled, rodlike chromosomes. Each chromosome then splits longitudinally, forming two identical chromatids.

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3 0
3 years ago
Use 2-3 sentences to describe what would if populations never evolved?
s2008m [1.1K]

Answer: Well, populations never evolved than one human might have gone extinct due to many different viruses and sicknesses but other animals might not be extinct.  If populations never grew more then that would be because we could not overpower dome viruses. If we never. If we never evolved animals like a Carrier pigeon would not be dead or extinct today.

8 0
3 years ago
For children with most physical disabilities and other health impairments, a common cause of academic difficulties is
Ber [7]

For children with most physical disabilities and other health impairments, a common cause of academic difficulties is erratic or irregular school attendance.

Class attendance or school attendance is very important for your academic carrier because if you are not able to attend the class, you did not learn anything, you did not finish your homework etc. and when the exams came you did nothing. So, the children with physical disabilities or other health issues mostly misses the class due to health issues, and this irregular attendance causes difficulties in academic carrier.

<span> </span>

5 0
3 years ago
What is the most likely result of a cell with a mutation in the gene that codes for the enzyme primase?
Andreyy89

Answer:

The consequences will depend on the type of mutation. For example, if the mutation is synonymous it will not have negative effects on the cell function. On the other hand, if the mutation produces amino acid diversity it may cause loss of function

Explanation:

Primase is an RNA polymerase that adds RNA nucleotides to the complementary DNA strand in order to prepare it for the RNA polymerase III during transcription initiation

5 0
3 years ago
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