A human skin cell contains 46 chromosomes. After the cell completes the process of mitosis and the cell divides, how many chromosomes will each of the new skin cells contain?
Answers
I think 92
I'm not sure though
Final answer:
After a human skin cell, which is made up of 46 chromosomes, undergoes mitosis, it divides into two new cells, each containing the same number of chromosomes as the original cell - 46.
Explanation:
A human skin cell, or a somatic cell, contains 46 chromosomes. This includes 22 homologous pairs and one pair of sex chromosomes, a configuration known as diploid (2n). When a somatic cell undergoes mitosis, which is a process of cellular division, it creates two identical daughter cells. Each of these new cells will contain 46 chromosomes, the same as the original cell, maintaining the diploid (2n) condition. This is because mitosis involves the replication of DNA, alignment of chromosomes at the metaphase plate, splitting of sister chromatids, and reformation of the nucleus, ensuring that the resultant cells have the same genetic composition as the parent cell.
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Snakes, dogs, and humans have a vertebral column. Snakes and dogs have tails, and humans have vestigial tailbones. Dogs and humans have limbs, but snakes do not. Most reptiles lay eggs, but a few give birth to live young. What do these structures suggest about the evolutionary pattern between the three organisms?
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Compare the productivities of a swamp and a river, and give two reasons for the difference
species
phyla
genera
Answers
A genus is subdivided into smaller groups called species. Therefore, option (B) is correct.
What is taxonomical classification?
Taxonomy is the study and practice of categorizing or classifying. A taxonomy (or taxonomical classification) is a categorization scheme, especially a hierarchical classification, that organizes things into groups or kinds.
There are seven primary taxonomic ranks: kingdom, phylum, class, order, family, genus, and species. In addition, domain, which was proposed by Carl Woese, is now commonly used as a fundamental rank, although not being listed in any of the nomenclature laws, and is synonymous with dominion.
A genus is a taxonomic rank composed of species grouped based on shared features (having similar structures or dissimilar characteristics) or evolutionary relationship. It is one of the eight major taxonomic ranks used to classify living organisms. It is subordinate to the family and superior to the species.
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phylogenic
transitional
index
Answers
Answer:
Transitional
Explanation:
- A fossil which has traits that are common to its derived descendant group, as well as the ancestral group, is known as the transitional fossil.
- Gerobatrachus hottoni is known as the transitional fossil as it has characters that are common to frogs and salamanders and hence, is known to be a transition between the frog and the salamander.
- It is to be noted that a transitional fossil is not a connecting link between the ancestor and the descendant.
Answers
In addition to air and water, our body constantly needs regular inflow of food, which provides the energy reserves necessary for movement, breathing, thermoregulation, heart, blood circulation and brain activity. In the process of digestion of food decays to individual glucose molecules which then fall through the intestinal wall into the bloodstream. With blood flow glucose transported to the liver, where it is filtered and delayed in reserve. The pituitary gland supplies the pancreas and thyroid glands signal to the release of hormones that cause the liver to throw out the accumulated glucose in the bloodstream, and then delivers it to the blood to the organs and muscles that are in need of it. Having achieved the desired body glucose molecules penetrate into the cells, where it is converted into a source of energy that is available for use by cells. Thus, the process of continuous energy supply agencies depends on the level of glucose in the blood.
a. True
b. False
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Answers
Tissues together make the organs.
Organs together the organ systems.
So, ultimately, cells are a part of organ systems.
May serve a specific function within the organismExamples- blood cells, nerve cells, bone cells, etc.LEVEL 2 - TissuesMade up of cells that are similar in structure and function and which work together to perform a specific activity
Examples - blood, nervous, bone, etc. Humans have 4 basic tissues: connective, epithelial, muscle, and nerve.LEVEL 3 - OrgansMade up of tissues that work together to perform a specific activityExamples - heart, brain, skin, etc.LEVEL4 - Organ Systems
Groups of two or more tissues that work together to perform a specific function for the organism.
Examples - circulatory system, nervous system, skeletal system, etc.
The Human body has 11 organ systems - circulatory, digestive, endocrine, excretory (urinary), immune(lymphatic), integumentary, muscular, nervous, reproductive, respiratory, and skeletal.LEVEL 5 - Organisms
Entire living things that can carry out all basic life processes. Meaning they can take in materials, release energy from food, release wastes, grow, respond to the environment, and reproduce.
Usually made up of organ systems, but an organism may be made up of only one cell such as bacteria or protist.
Examples - bacteria, amoeba, mushroom, sunflower, human
4.Of the controlled substances, which schedule of drugs is the average person most likely to have in their homes? How are the controlled substances in this group different from those in the other schedule levels?
Answers
If you are working as a forensic scientist and are given an unknown powder from a crime scene, what would you hope to find out about the powder?
If I am working as a forensic scientist and I am given an unknown powder, I would analyze this and hope to find out where did this belong.
You find that the unknown powder contains the illegal drug cocaine. If someone where to ask you to determine the purity of the substance, what would they mean? Why is purity important in crime investigations?
The purity of the substance would mean that how much of the main component of cocaine is present in this powder. Purity is important in crime investigations because it will help you determine how much of the main component is present in that substance, the main component is the active ingredient of that substance.
Of the controlled substances, which schedule of drugs is the average person most likely to have in their homes? How are the controlled substances in this group different from those in the other schedule levels?
The schedule of drugs that is mostly present at home is antibiotics.
1.If I am working as a forensic scientist and I am given an unknown powder, I would analyze this and hope to find out where did this belong.
2.The purity of the substance would mean that how much of the main component of cocaine is present in this powder. Purity is important in crime investigations because it will help you determine how much of the main component is present in that substance, the main component is the active ingredient of that substance.
3.The schedule of drugs that is mostly present at home is antibiotics.