Answer:
The correct answer is: lets the air get inside the lungs.
Explanation:
The process of ventilation, or breathing, consists of two parts: <u>inhaling and exhaling.</u>
Inhaling is the name of the process that is responsible for the air entering the body by the respiratory tract. Exhaling is the opposite, it lets the air out. Both are equally important since they allow the gas exchange necessary for the oxygenation of the blood.
When inhaling, the diaphragm and the external intercostal muscles contract. This pulls the ribcage upwards and outwards, which increases lung volume while decreasing the air pressure inside.
Answer:
C. 217
Explanation:
Mendel obtained the phenotypic ratio of 3 dominant: 1 recessive in the F2 generation of a monohybrid cross. According to the given information, inflated pods are dominant over the constricted one.
Let's assume that the allele C is responsible for inflated pods while the recessive allele "c" gives constricted pods. A cross between two pure breeding plants with inflated (CC) and constricted pods (cc) would give all the plants with inflated pods (Cc) in the F1 generation. A cross between two F1 plants would obtain F2 generation in following ratio=3 Inflated: 1 constricted.
Therefore, if 650 plants with inflated pods were obtained in the F2 generation, 217 plants must have constricted pods since 650:217 is almost equal to 3:1.
<span>In a long day, a person goes through different daily activities, completes different tasks, goes to work, runs errands, and others. With all the activities that a person goes through, sleeping is required in order to relax and replenish energy. The word that completes the sentence is relaxation.</span><span />
but dna condenses into chromosomes in both miosis and mitosis.
Explanation:
in mitosis in prophase the chromatin first condenses into dna where after the identical cells are created returns to chromatin however in miosis the same thing happens as in mitosis but continues to further divide in a stage known as prophase I as it is a second diviosion rather than a first.
Answer:
D) To read the DNA sequence of the synthesized strand in the 5'-to-3' direction, the gel is read from top to bottom.
Explanation:
The DNA sequence of the synthesized strand in the 5'-to-3' direction is read from the bottom to the top. On the electrophoresis gel, bands corresponding to the smallest DNA fragment migrate to the bottom of the gel. Meaning, the DNA primer fragment would be at the bottom and immediately above it would be the fragment that had fewer dNTPs (deoxynucleotidetriphosphates) incorporated prior elongation termination by an incorporated ddNTP.
