Answer:
The basic steps of the scientific method are: 1) make an observation that describes a problem, 2) create a hypothesis, 3) test the hypothesis, and 4) draw conclusions and refine the hypothesis.
Explanation:
In neurons, the absolute refractory period is caused by the inactivation of the Sodium (Na⁺) channels that originally opened to depolarize the membrane.
Answer:
The statement is false
Explanation:
This type of virus is characterized by the presence of only one DNA strand. For this virus, the mechanism of infection is only effective against vegetal cells. After the introduction of the viral DNA inside of the host cytosol. The present proteins auxiliate synthesize the virus DNA and the antisense strand; transforming the single-stranded DNA into double-stranded DNA. In this way, the virus DNA is read by the transcription mechanism of the host, resulting in new virus proteins.
Since it follows the normal gene transcription: it not goes against the normal rule. Consequently, the statement is false.
Answer:
To regulate water balance in the body
Explanation:
The kidneys are two bean shaped renal organs which perform a host of functions for the body such as regulating fluid balance, filtering minerals from the blood etc. Among their functions is the regulation of water balance in the body through the antidiuretic hormone.
When an athlete completes a physical activity and sweats a lot, the kidney reacts to the loss of water by sweat by adjusting urine output causing the body to produce lower and more concentrated urine.
Answer:
If a diploid cell in G2 has 66 DNA double helices, it must have 33 pairs of homologous chromosomes
Explanation:
Diploid cells (2n) are those that have two chromosomal sets, that is, the chromosomes in these cells are arranged in pairs. Each pair has the same chromosomes (regarding size and shape) and the same genes. These equal chromosomes are called homologues. In this case, if a diploid cell has 66 chromosomes, we can conclude that these chromosomes are grouped into 33 equal pairs of homologous chromosomes.
