Chapter 3- Cells And Tissues Flashcards
Four cell functions?
Biosynthesis, Excretion, Nutrient, Respiration
Biosynthesis
Making macromolecules a cell needs
Excretion
Gets rid of waste into environment
Respiration
Breaking down food to release energy
2 types of cells
Prokaryotes(bacteria)- not membrane bound
Eukaryotes- membrane bound(everything except bacteria)
Plasma membrane’s main function
Transport, protect, and semi-permeable
Cytoplasm’s main function
Factory area
Nucleus’ main function
Control center
Endoplasmic Reticulum’s main function
Storage of proteins, makes lipids
Mitochondria’ said function
Makes energy (cristae/matrix)
Golgi body’s main function
Package proteins in vesicles (cisternae)
Ribosomes’ function
Protein synthesis
Peroxisomes’ main function
Get rid of peroxides
Lysosomes’ main function
Cleaners if cell
Vacuole’s main function
Holds waste
Centrioles’ main function
(Mitosis) Structure
What make up the plasma membrane?
Phospholipids
Organ molecules contain ______
Carbon
Four organic molecules
Carbohydrates, lipids, proteins, nucleic acids
Carbohydrates are made of sugars like ___,____, and____ which make____
Monosaccharides, disaccharides, and polysaccharides to make energy
Lipids(phospholipids) are_____that___?
Fats that store energy and provide insulation
Nucleic acids are_____
Heredity; DNA & RNA
DNA
2 strands, has a nucleotide, bases A,T,C,G, sugar is deoxyribose
RNA
1 strand, had nucleotide, bases U,A,C,G, sugar is ribose
Meiosis(sexual): what, where, #of chromosome, in general
Variations, sex cells=gametes, 23 per cell, diploid > 2 haploids x2
Mitosis(asexual): what, where, #chromosomes, in general
Clone, body cells=somatic cells, 46per cell, diploid>2 diploids
Cell cycle
Interphase and mitosis
3 steps in interphase
G1-growth, S-synthesis(rep.DNA), G2- growth 2
4 phases in Mitosis
Telephone, anaphase, metaphase and prophase
Where is protein synthesis?
Ribosomes
What is protein synthesis? And it’s 2 steps?
Making proteins
2 steps are transcription and translation
Transcription: Where, job, RNA?
In nucleus, job is for mRNA to read DNA, has mRNA
Translation: Where, job, RNA?
In the cytoplasm and ribosomes, tRNA reads mRNA and finds amino acids, has tRNA
Another name for extracellular fluid and what they mean?
Interstitial fluid, means the space around every cell
4 main tissue types
Epithelial, connective, nervous, muscular
Epithelial
Forms coverings outside body, lines cavities of organs, tubes, and glands, sheets are 1-7 layers thick
Words to describe layers of epithelial tissues(psst)
Pseudostratified- Looks layered but isn’t
Stratified- many layers of cells
Simple- 1 layer of cells
Transitional- several layers, different shapes
Words that describe the look of epithelial tissue
Cuboidal- cube
Squamous- flat and scaly
Columnar- columns
Connective tissue
Most abundant type; function is to protect, support and bind together parts
What are dense fibrosis connective tissues?
Ligaments and tendons
Nervous tissue
Has nerve cells(neurons) to get and send electrical impulses
Where are 3 places nervous tissues are found
Brain, spinal cord, nerves
Muscle tissues
Made of cells that conduct impulses and contact
Three types of muscular tissues
Skeletal(flesh), voluntary(we control), striated(striped), multinucleale(many nuclei)
3 kinds of muscular tissues
Cardiac- heart, involuntary, uninucleate, striated.
Smooth muscle- virceral(organ) tissue, uninucleate, involuntary, smooth
Skeletal- attached to the bones, voluntary, multinucleate, striated
What are groups of cells that are similar in structure and function?
Tissue
4 elements that make up the bulk of all living things ?
Oxygen, hydrogen, carbon, nitrogen
Cell theory statements:
All living things are made of cells. Cells come from other cells, the cell is the basic unit of structure and function.
What is cristae?
The folds of the inner mitochondria
What is cisternae
Flattened disks of the Golgi apparatus
Difference between somatic cells and gametes
Somatic cells have diploid and fame red have haploids
2 chemotherapeutic drugs that are fatal
Vincristine- damages mitotic spindles and causes won’t let cell division happen
Adriamycin because it blocks DNA message to mRNA so it can’t transport to tRNA
No blood=?
Slow healing
Liver _____itself
Regenerates
Cell theory by ____,_____, and ______
Schleiden , Schwann, and Virchow