Essay Meiosis Questions Mitosis

Submitted By ehden101
Words: 770
Pages: 4
Open Document
It is unlikely to find all of the structures within a cell because many of them do not happen all in one phase. One example is the cleavage furrow. This only happens during telophase. Also, these images are super small, and thus, may be difficult to located. In Both structures of the cells, the 2n number is 4. The purpose of mitosis, otherwise known as Cell or Nuclear division, is cell regeneration, growth, and asexual reproduction,while the purpose of meiosis is the production of gametes for sexual reproduction. Mitosis is a single nuclear division that results in two nuclei that are usually partitioned into two new daughter cells. One such cell is blastula, or an animal embryo at the early stage of development when it is a hollow ball of cells. There are various differences in how mitosis works with animals and plants cells. In Prophase, animal cells have centrioles that organize spindles while plant cells don't.
During Prometaphase, the pre­prophase band of plant cells disappears.
During Telophase, animal cells have a cleavage furrow, which is made of actin and myosin, that forms halfway between the two nuclei in the dividing cell. In Plant cells, a phragmoplast, which is made of actin, myosin, and microtubules, forms in the center of the cell where the cell wall will appear.
In Cytokinesis, the contractile ring in animal cells contracts and pinches the cell into 2 daughter cells. In plants, the phragmoplast extends and forms the cell wall.
In plants, mitosis occurs only in the meristem tissues. They are located at the tips of roots, shoots, and in the stem, between the xylem and phloem. In an onion root tip, there tends to be more mitotic division because this region is always growing and cell division is needed to support this growth. Also, while the root pushes through the soil, cells are scraped off and must be replaced.

The nucleus in the undivided cell has the diploid (2n) number of chromosomes, and the nuclei in the two split cells also have 4 number of chromosomes. In mitosis, the chromosome number halves. Exercise 2: Meiosis in Animals

A. There are a greater number of gametes in testes than in ovaries because during sexual reproduction lots of sperm cells, male gametes, flow from the male to the female reproductive organ. Many of the sperm die before they reach the ovary. Only one ovary is needed every cycle, but many sperm cells are needed in order to make sure that at least one will be fertilised during reproduction.

Exercise 3: Simulating Meiosis Questions Mitosis produces two genetically equivalent nuclei.
Mitosis occurs in response to the body's need for growth and repair. Generally, it occurs in all tissues except mature nerve tissue and in the formation of gametes.
Experiment Mitosis and Meiosis Meiosis the process of cell division that reduces the number of chromosomes in a cell from a diploid cell (2n) to haploid (n) and results in gametes (sex cells, aka eggs and sperm) and
Show More

Related Documents: Essay Meiosis Questions Mitosis

BIO RWSL Mitosis Meiosis Fall 2014 Essay

Exercise 1: Mitosis in Animal and Plant Cells Data Collection: 9. Think back to the pre-lab questions about the differences in plant and animal cell mitosis. Were your predictions correct? What, if any, differences did you actually see? “If the division of plant and animal cells is observed, the plant cells will not change shape during division while the animal cells will form cleavage, morph and form two rounded cells.” Because this was my prediction, it was correct. The animal cells change…

Words 1257 - Pages 6

Human: Dna and Protein Synthesis Essay

best method to have accurate recall on the exams B) it is a great idea to study all of the questions in the PPTs, the study questions in the textbook, and any questions prompted in the textbook readings C) sharing questions, answers and ideas in the study lounge is a bad idea D) since the exams are cumulative it is pointless to continue to study previous chapter study questions and ppt review questions E) it is a great idea to study the homework reviews thoroughly, knowing why a correct answer…

Words 1949 - Pages 8

Essay about Lab 6

1. Why are spindle fibers important for mitosis? Spindle fibers are important for mitosis because they divide the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division. 2. State the four bases that make up DNA. a. adenine (A) b. guanine (G) c. cytosine (C) d. thymine (T) 3. What are the two base pairs? a. A with T b. C with G 4. a. Define the term crossing over. Crossing over…

Words 996 - Pages 4

Rhianna Dix mini poster Essay

Title and Authors Observing Mitosis and Meiosis in plant and animal cells Rhianna Dix Introduction What does the different stages of mitosis look like in a plant versus an animal cell? How long does a cell spend in each phase of mitosis? What does crossing over look like in meiosis of Sordaria fimicola? The independent variable is the time spent in each part of mitosis and the dependent variable is the number of cells that are in each part of the cycle (i.e. Interphase, prophase, metaphase, and…

Words 622 - Pages 3

Biology 1107 Exam 7

about the upcoming exam. Exam 3 will consist of 100 questions. Primarily multiple choice. Some important concepts to especially note: Mitosis- Be able to run through the stages of mitosis and document what happens at each stage. A great way to do this is to replicate the page in your book with all the pictures on a clean sheet of paper from memory- concentrate on what the chromosomes look like and how they change. What is the function of mitosis? Compare bacterial cell division with Eukaryotic cell…

Words 297 - Pages 2

MITOSIS LABORATORY Essay

MITOSIS LABORATORY INTRODUCTION All new cells come from previously existing cells. New cells are formed by the process of cell division, which involves both division of the cell’s nucleus (called mitosis) and division of the cytoplasm (called cytokinesis). Dividing cells experience both of these events along with a period of time between divisions called interphase. During interphase, the nucleus appears normal and the cell is performing its usual cellular functions. Also, the cell is increasing…

Words 1437 - Pages 6

Essay on Biology Exam Corrections

to cytokinesis. After reviewing the question, it is evident to me that the entire explanation was pointing to mitosis. So mitosis is the form of reproduction that this question represents. 20. I was able to quickly eliminate a few of the choices in this question. My options came down between sperm and blood cells. Sperm cells are not somatic cells that are regularly being replaced by rapid mitosis, so the correct answer was blood cells. 22. For this question, I knew the correct answer could not…

Words 768 - Pages 4

A mir kiss Essay

nitrogen EUKARYOTIC CELLS Range from unicellular to complex multicellular organism Have membrane bound organelles and nucleus Cell wall made of cellulose (plant), or chitin (fungi) Contain one or more paired linear chromosomes Divide my mitosis or meiosis DNA stored in the nucleus PLANT CELL CHARACTERISTICS Cell wall (cellulose) Plastids Single large central vacuole ANIMAL CELL CHARACTERISTIC No cell wall No plastids No large central vacuole ELODEA LEAF Each elodea leaf is surrounded…

Words 2312 - Pages 10

APBio 1415 February Exam Review Sheet Essay

AP Biology February Exam Review Sheet Major Focus: Information ○ Content: Information 2 - Information 11 ○ Standard 4.1- Standard 4.7 All prior course material may also be assessed on the exam. Consult prior review sheets as necessary. ● 4.1: DNA, and in some cases RNA, is the primary source of heritable information. a. b. Genetic information is transmitted from one generation to the next through DNA or RNA. Evidence of student learning is a demonstrated understanding of each of the following:…

Words 4365 - Pages 18

Scientific Evidence Supports The Diversity Of Life

biotechnology and bioethics affect our daily lives. Chapters 3.11, 6, 7, 8.7-8.14, (part 2)Processes involving DNA Number of exam questions Protein synthesis (8.1-8.9) 17 1. DNA/RNA comparison Central Dogma DNA---mRNA---protein Transcription Translation Mitosis/meiosis (6) 18 Stages of mitosis and meiosis Terminology Genetics (7) 26 Terminology - homozygous, phenotype, alleles, etc. Probability - independent and dependent events Genetic…

Words 296 - Pages 2