Animal cells are distinct from plant cells. Animal cells lack a cell wall (cellulose) which allows the animal to move without breaking it’s cells apart. When you break a piece of celery‚ the noise It has a nucleus‚ a cytoplasm and a cell membrane. http://wiki.answers.com/Q/What_are_some_animal_cel... What are facts about on animal cells? theyt have no cell wall. they have a nucleus and nucleolus. http://wiki.answers.com/Q/What_are_facts_about_on_... What are some facts on an animal cell
Premium Cell membrane Cell Cell wall
biology‚ cell theory is a scientific theory that describes the properties of cells‚ which are the basic unit of structure in all organisms and also the basic unit of reproduction. The initial development of the theory‚ during the mid-17th century‚ was made possible by advances in microscopy; the study of cells is called cell biology. Cell theory is one of the foundations of biology.The observations of Hooke‚ Leeuwenhoek‚ Schleiden‚ Schwann‚ Virchow‚ and others led to the development of the cell theory
Premium Cell Cell theory Theodor Schwann
One year old male infant named Matthew is brought into the clinic by very worried parents. Infant shows abnormal symptoms such as stunted growth and underdevelopment of weight for his age and he has no hair on him‚ a condition called alopecia. Alopecia in his case took off all the hair off his head and his eyebrows and eyelashes. Infant’s head was severely disproportioned to his body and also was disproportioned to his face. His face appeared to be very shrunken and small and he had an underdeveloped
Premium Progeria Senescence DNA
Describe the structure of DNA. DNA is one of the nucleic acids information-containing molecules in the cell (ribonucleic acid‚ or RNA‚ is the other nuclei c acid). DNA if found in the nucleus of every human cell. The information is DNA: guides the cells (along with RNA) in making new proteins that determine all of our biological traits. DNA gets passed (copies) from one generation to the next. DNA in a cell is really just a pattern made up of four different parts called nucleotides. Image a set of blocks
Premium DNA Gene Genetics
his favorite dish of mushrooms a few of Amanita caesarea‚ a poisonous species. These mushrooms were able to block enzymes responsible for transcription. For the first 10 hours after eating the mushrooms Caesar seemed well. After 15 hours his liver cells stopped functioning. He then showed signs of nausea‚ diarrhea‚ and confusion because his liver could no longer filter and remove waste from the blood. He died two days later from liver failure. 1. What makes transcription important? 2. What is the
Premium Protein Claudius Enzyme
prokaryotic and eukaryotic cells is a. Prokaryotic cells have a nucleus‚ whereas eukaryotic cell do not b. Eukaryotic cells have existed on earth far longer than prokaryotic cells c. The DNA of eukaryotic cells is found in linear chromosomes‚ whereas the DNA of prokaryotic cells is found in a single circular chromosome. d. Eukaryotic cells are generally smaller than prokaryotic cells 4. In plant cells‚ the organelles that break down organic molecules to obtain energy for the cells use are a. Mitochondria
Free DNA Bacteria Protein
Cover with the cover slip and blot firmly with several layers of filter/ tissue paper and press gently to spread to the root tip. 8. View on the microscope (x400 magnification) and look for cells with visible chromosomes and watch the cells. The microscope will take some adjusting to enable you to see the cells clearly 9. If it is unsuccessful repeat steps 5-8 using another of the root tips. Safety: When conducting an experiment there are factors concerning safety that need to be taken into account
Premium Microscope Laboratory glassware PH
within the cell. Transfer Ribonucleic Acid (tRNA) is a nucleic acid‚ which is involved in the process of protein synthesis inside the cell. When mRNA is in the cytoplasm of the cell the ribosome in the cell attaches itself to the mRNA. Genes are sections of DNA; each gene has a different code‚ which creates a certain protein. The sequence of the bases in the genes controls which amino acids are created and then these amino acids are joined to make a new protein. Each gene in a cell acts as a code
Premium Protein Amino acid RNA
chromosome is different in different cell types. D) It consists of a single linear molecule of double-stranded DNA. E) Active transcription occurs on euchromatin. Answer: C Topic: Concept 19.1 Skill: Comprehension If a cell were unable to produce histone proteins‚ which of the following would be expected to occur? A) There would be an increase in the amount of "satellite" DNA produced during centrifugation. B) The cell’s DNA couldn’t be packed into its nucleus. C) Spindle fibers would not form
Premium DNA Gene Cell nucleus
development of the microscope on the development of cell theory. Over a period of nearly 400 years‚ technology has impacted so significantly on humanities understanding of life. This is due to the development of the microscope‚ examining the invisible‚ discovering the building blocks of life‚ and the creation of the cell theory. This theory is so fundamental to our current knowledge of the functioning of living organisms. The development of cell theory is closely linked to the improvements of the
Free Cell Microscope Bacteria