Liver and skeletal muscle cells often have multiple nuclei as they are required to make to produce large amounts of protein encoded by their DNA. These are examples of:
A. polyploidy
B. polysomy
C. aneuploidy
Hello,
I think it is a case of polyploidy as polyploidy leads to multinucleated condition that occurs mainly by fusion of cells that in turn contributes to the functioning of liver and skeletal muscle cells.
Polysome is either increase or decrease in the copy no.of a chromosome.It is a type of aneuploidy only.
Hope this helps.
Liver and skeletal muscle cells often have multiple nuclei as they are required to make to...
Skeletal muscle cells have many nuclei per cell (i.e., they are multi- nucleate). What is the likely process, which results in this type of cell. Muscle cells lack the ability to separate chromosomes during! anaphase. Muscle cells undergo multiple rounds of mitosis for each pass through cytokinesis. Muscle cells undergo multiple rounds of S-phase during interphase. before entering G2. Muscle cells undergo multiple passes through cytokinesis for each pass through mitosis.
Question 1 Liver cells and the skeletal muscle cells regulate glycogen in different ways. List their key differences. Not complete Answer: Marked out of 1.00 Check P Flag question How is Protein phosphatase 1 regulated by phosphorylation? What enzymes are involved, and what is the effect of phosphorylation on PP1? Question 2 Not complete Answer: Marked out of 1.00 Check Flag question Question 3 What reaction replenishes oxaloacetate? Name the enzyme and it's substrates. Not complete Answer: Marked out of...
During the course of normal human development, the muscle myosin protein becomes expressed in muscle cells but not in non-muscle cells, such as liver cells. Based on this information and your knowledge about biology, select true or false for each of the following statements. a) T/F This expression pattern could result from the muscle myosin gene being present in muscle cells but not in liver cells. b) T/F This expression pattern could result from the regulatory sequence of the muscle...
In humans, there are about 200 different types of cells. Why are your liver cells different from skin cells, or neurons, or muscle cells? During development, each cell accumulates different mutations changing their DNA They produce the same proteins but some of those proteins are denatured in each cell They have different DNA and thus, each cell produces different proteins They produce the same kind of proteins but not all proteins are active in each cell They have the same...
1. Juvenile Trichinella worms live in the: a. skeletal muscle b. liver c. lymph glands d. intestines 2.Tardigrades: a. have a muscular pharynx used for piercing plant and animal cells b. can reproduce sexually and/or asexually c. lack a true coelom d. excrete nitrogenous wastes via diffusion through their cuticle 3. Malpighian tubules in tardigrades a. are located near the rectum b. empty into the digestive system c. are involved in excretion d. all of the above 4. Tardigrades pierce...
1) You have two human liver cells (A and B) and you hypothesize that the insulin receptor gene in Cell A has a mutation in exon 1 and Cell B contains the wild type sequence. You extract genomic DNA from each of the cells. Of the following, what would be the most efficient (quick, precise and relatively cheap) way to test your hypothesis. a. Isolate protein from both cells, purify the insulin receptor, and determine the amino acid content. b. Sequence the...
molecular biology
Section C (40 marks) Answer ALL questions from this Section 5. You have isolated total RNA from muscle cells and constructeda muscle cDNA library. You wish to study the regulatory region of a muscle-specific cDNA gene (gene M) that you have previously identified. 6 (a) For your study, you need to isolate a genomic clone of gene M. Why isa cDNA clone of gene M not appropriate for your study? (2 marks) (b) Outline the steps you would...
All cells in a mouse are genetically identical, yet many cells like brain or liver cells perform specialized functions. How do these cells achieve this level of specialization? a. Through transcription factor activity b. Through alternative splicing of mRNA c. Through the accumulation of mutations d. Through gene silencing e. Through post-translational modifications Which material would not be required for determining the sequence of a 400 bp DNA fragment by the high-throughput sequencing method? a. A short, artificially synthesized primer...
23. Which of the following is true? a. Skeletal muscle has striations and intercalated discs b. Smooth muscles have no nuclei. c. Organ systems function completely independently of each other. 0 d. Unlike CT scans, regular X-rayd e. MRI uses magnets, but no radiation. 24. Which of the following is untrue? a. Epidermis contains stratified squamous epithelium. b. Cartilage is found on the surface of bones in joints. c. Intercalated discs are located between the vertebrae. d. Epithelial tissue is...
MUSCULAR SYSTEM Skeletal muscles allow our bodies to bend, walk, sit, chew and talk. Humans have more than 600 muscles in their bodies. Muscles are named in various ways: by the action they perform (extensor, flexor): by their size (maximus, minimus), or length (brevis, longus); by their shape (deltoid, trapezius); for their origin(s) or insertion(s) (sternocleidomastoid), or by the number of origins or insertions (triceps, biceps). In addition, they can be named for their location (abdominis, brachii) or the bones...