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BabaBlast [244]
3 years ago
14

Answer the following questions:

Biology
1 answer:
Naddik [55]3 years ago
4 0

Answer:

1. The respiratory system allows us to breathe . They bring oxygen into our body and remove carbon dioxide from the body .

2. Tiny hairs called cilia protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.

3. The throat (pharynx and larynx) is a ring-like muscular tube that acts as the passageway for air, food and liquid. It is located behind the nose and mouth and connects the mouth (oral cavity) and nose to the breathing passages (trachea [windpipe] and lungs) and the esophagus (eating tube).

4. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhaled.

5. The heart pumps blood to the lungs for oxygenation and the lungs then give the heart back oxygen rich blood to be transmitted to the whole body

Explanation:

plss mark brainliest

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Mademuasel [1]

MAD (mitotic arrest deficient) are proteins related to spindle cell cycle checkpoint and it is important since they prevent the segregation of sister chromatids until all have bound to the spindle.

The cell cycle ensures the duplication of the genome and its distribution in daughter cells by passing through a coordinated and regulated sequence of events.

A series of checkpoints guarantee the orderly progression of the phases of cell division and the correct distribution of the duplicated genetic material in the daughter cells.

The checkpoints during mitosis are:

  • At the end of stage G1 and before S.

  • Before anaphase in mitosis.

  • DNA damage checkpoints in G1, S or G2.

The checkpoint before anaphase in mitosis guarantees the separation of chromosomes, and operates by activating the Mad2 protein that prevents the degradation of segurin, until the conditions are appropriate.

That is, the Mad2 protein prevents the segregation of sister chromatids until they have all bound to the spindle.

Therefore, we can conclude that MAD (mitotic arrest deficient) are proteins related to spindle cell cycle checkpoint and it is important since they prevent the segregation of sister chromatids until all have bound to the spindle.

Learn more here: brainly.com/question/9790187

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2 years ago
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How did psychology develop as a unique form of study?
Brilliant_brown [7]

Answer:

During the 20th century, a belief called behaviorism was popular. Behaviorism was a major change from previous theoretical perspectives, rejecting the emphasis on both the conscious and unconscious mind.

Explanation:

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What term describes an individual possessing two of the same alleles at a gene locus? monohybrid dihybrid homozygous wild type h
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Question was't arranged i have arranged it in  ask for detail section.

Answer:

Option e. homozygous is the correct answer.

Explanation:

A gene which has two identical alleles on homologous chromosomes is called homozygous. It is denoted by XX (capital letters)  for dominant character (alleles) and  xx (lowercase letters) for recessive character (alleles).

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Answer:

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I hope it helps.

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