<span>An
atom with an atomic number of 12 has 12 protons. Because the mass
number is the sum of the protons and neutrons, the mass number would
need to be at least 12. I hope this helped!
</span>
Explanation:
- In mechanical digestion, the teeth grind food and break it in to smaller parts.
- Churning and the enzyme pepsin break down protein in the stomach.
- The pancreas releases the enzymes trypsin and chymotrypsin.
- Trypsin and chymotrypsin act on the proteins to break them down in the duodenum.
- Amino acids are absorbed by the capillaries in the jejunum.
- Amino acids enter the bloodstream and are circulated throughout the body.
Further Explanation:
Food is chemically and mechanically broken down into into smaller particles. This begins in the mouth, where food is mechanically crushed by the teeth, and mixed with saliva to allow water based enzymes like lingual lipase to work;- it's then transported to the stomach via the esophagus. Next in the stomach the enzyme gastric lipase acts on lipids, breaking them up into their components.
In the stomach, the enzyme pepsin breaks proteins, like those found in salmon, into smaller peptides by splitting the peptide bonds holding the proteins together. In the stomach, the enzyme pepsin breaks proteins, into smaller peptides by splitting the peptide bonds holding the proteins together.
The duodenum processes these newly-formed peptide chains or polypeptides, into smaller ones, through the enzyme action of elastase, trypsin and chymotrypsin; these are produced in the pancreas. Peptidases convert these fragments into amino acids for absorption into the bloodstream via the small intestines.
After digestion, the process of absorption occurs within villi of the small intestine; this occurs within the jejenum. Villi are small finger-like projections from epithelial cells of the small intestine; due to the projections, they have increased surface areas for absorption. Absorption involves several processes such as:
- endocytosis
- passive diffusion
- facilitated diffusion
- active transport
- secondary active transport (co transport)
The nutrients are then taken up into the bloodstream via capillaries, and circulated through the body
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<h3>Mitosis</h3>
The constancy of the chromosome number from one cell generation to the next is maintained through <u>Mitosis.</u>
<h3>What is mitosis?</h3>
- A cell prepares for cell division by replicating its chromosomes, segregating them, and creating two identical nuclei during the mitotic phase.
- The cell's contents are often evenly divided into two daughter cells with identical genomes after mitosis.
<h3>What is the mitotic process?</h3>
- A eukaryotic cell's nucleus divides in two during the process of mitosis, which is followed by the division of the parent cell into two daughter cells.
- The term "mitosis," which translates to "threads," refers to the chromosomes' appearance as threads when the cell gets ready to divide.
<h3>What is the phases of the mitosis?</h3>
- prophase
- prometaphase
- metaphase
- anaphase
- telophase, and cytokinesis.
<h3>What is the importance of mitosis?</h3>
- Multicellular creatures depend on mitosis to produce new cells for growth and to replace damaged or worn-out cells, such as skin cells.
- Mitosis serves as the main asexual reproductive mechanism for a large number of single-celled organisms.
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Answer:
A planet's atmospheric conditions influence its ability to retain heat, so that the location of the habitable zone is also specific to each type of planet.
Explanation:
