Question: When an atom that has no charge loses two electrons, it becomes a:
A: positive ion.
B: negative ion.
C: positive isotope.
D: negative isotope.
Answer:
When an atom that has no change loses two electrons, it becomes "positive ion".
Explanation:
It is known that electrons hold a negative charge. So, when the negative charge that is electrons are taken out an atom then the number of electrons become less in number as compared to the number of protons. Hence, the atom attains a positive charge.An isotope is formed when an atom shows same number of protons and different number of neutrons. So, when an atom loses 2 electrons there will be no change in the number of neutrons. Therefore, an isotope will not form.Thus, it is concluded that when an atom with no charge loses two electrons, it becomes a positive ion.
Answer:
Answer is that phagocytes could not attach as easily to invading microbes.
Explanation:
C3 and C5 are regarded as examples of complements. And the deficiency of these complements is regarded as hypocomplementamia, which is an immunodeficiency.
Phagocytes are cells in the body that are protecting the body by engulfing or ingesting harmful foreign particles such as bacteria and other small dead cells.
The deficiency of C3 will not allow the phagocytes to carry out their activities against the invading microbes. This means that, Charlie and Rachelle are exposed to bacterial infections.
<span>38 weeks is early, the full term is typically 40 weeks. Nitrazine paper is a sensitive test of pH and will turn blue in the alkaline fluid. While that can happen for a number of reasons, one of them is that amniotic fluid will turn nitrazine paper bright blue indicating that the membranes have ruptured. Preterm labor management should be started.</span>
Answer:
In 2019, 89.5 percent of U.S. households were food secure throughout the year. The remaining 10.5 percent of households were food insecure at least some time during the year, including 4.1 percent (5.3 million households) that had very low food security. Food insecurity was lower in 2019 than 2018 (11.1 percent).
Explanation:
Microevolution is the change in allele frequencies that occurs over time within a population. This change is due to five different processes: mutation, selection (natural and artificial), gene flow, gene migration and genetic drift.