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Microscopic Life

For Microscopic Life Science Test

Order organs, tissues, cells, organelles, and organ systems from simplest to most complex Organelles, cells, tissues, organs, organ systems
What organism is considered an exception to the cell theory? Virus
What is a characteristic viruses have that living things have too? They contain genetic material
What does the cell theory state? Living organisms are made of cells, the most basic structure of life, and come from preexisting cells
What organelle of a cell can easily be seen with a microscope? Nucleus
Which part of the cell contains the cell's genetic material Nucleus
Which part of the cell controls the movement of materials into and out of the cell Cell Membrane
Which organelle is necessary for photosyntesis Chloroplast
Which organelle is only in plant cells Cytoplasm
Which structure is made of cellulose Cell Wall
Some human body cell groups such as blood and skin cells represent different Tissues in which similar cells function together
After switching from high to low power on a compound light microscope the field of view will appear Larger and brighter
After switching from low to high power what are some changes that would be evident in the field of view It would be smaller, and darker
What does chloroplast do? Aid in photosyntesis
What shape is an animal cell Circle
What shape is a plant cell Square
Why is methylene blue sometimes used in wet mounts To stain the specimen and make it easier to see
Why don't we drop the cover slip down on the wet mount To avoid trapping air bubbles under the cover slip
What parts of a compound light microscope are used for magnification Eyepiece, and objective
Describe organelles in a cell They have to work together and their activities must be coordinated
What do ribosomes do? Make proteins
The cytoplasm is to the cell as ... is to the ocean Water
The nucleus is the cell as the... is to the human Brain
The cell membrane is to the cell as the ... is to the Earth Atmosphere
What are some ways the image in the field of view is different from the actual specimen Enlarged, upside down and backwards
What can damage the lens of a microscope Using the coarse adjustment on high power
What is a cell? A collection of organic matter that is enclosed and separated from its surroundings
What is an organism? Something that can live and survive on its own
What is reproduction? The process of making new organisms
What is sexual reproduction? Cells from two different parents unite to create the first cell of the new organism
What is asexual reproduction? The new organism has only one parent, the part of the parent may split off and form a new one, it may divide in half
What is homeostasis? How an organism maintains a constant internal environment by "internal feedback mechanisms"
What is the main use of carbohydrates? Main source of energy
What are the building blocks of carbohydrates? Simple sugars- Glucose
What are the elements and ratio in carbohydrates? Carbon (1) : Hydrogen (2) : Oxygen (1)
What is the main use of lipids? Energy storage, protection, and insulation
What is the building block of lipids? Fatty acids
What is the main use of nucleic acids? Store genetic information
What are the building blocks of nucleic acids? Nucleotides
What is the main use of proteins? To do most of the work in our cells
What are the building blocks of proteins? Amino acids
What is a catalyst? A substance that speeds up the rate of a chemical reaction
How do catalysts work? They lower the activation energy needed in a reaction
What is an enzyme? Proteins that act as biological catalysts by lowering the activation energy
What is a substrate? The chemical an enzyme is working on to break down or build
What is the common name for the enzyme substrate complex? Lock and key model
What can denature an enzyme? Temperature or pH that is out of the optimum range
What is the active site and what is its job? The active site is where the enzyme meets the substrate
What is the product? The substrate after the enzyme lets go of it
What is chlorophyll? A pigment (coloured pigment) that captures light energy from he sun and turns it into energy the plant can use, sugar
What is the xylem? Tubelike structures that carry water from the roots throughout the plant ("roots to shoots")
What are stomates? Little pores/holes/openings on leaves that can open and close
What is transpiration? The process by which water passes through a plant from roots to the leaf and then out through the stomates
What is the phloem? Tubelike structure that carries food (sugar) from the leaves throughout the plant ("shoots to roots")
What is the collection of female reproductive organs called? The pistil
Describe reproduction in the female reproductive organs once it has been fertilized The pollen lands on the stigma, which is supported by the style. Embryos are made when the sperm and the egg cell merge. The egg cell is inside the ovule which is inside the ovary. Seeds protect the mature ovule, or the embryo.
What is the collection of male reproductive organs called? The stamen
What is the male sex cell called? Sperm
What does the pollen grain contain and how is it produced? The anthers at the tips of the filaments produce the pollen grain which contains sperm
Describe the process of fertilization The pollen grain lands on the stigma, it then creates a pollen tube which goes down the length of the pistil. The sperm cell travels down the pollen tube into the ovule and penetrates the membrane of the egg cell and a single fertilized cell is formed.
What are the three domains of life? Eukaryota, Bacteria, Archaea
What is an organelle? A small structure inside a cell, a little organ
What's inside a prokaryotic cell? Plasma membrane, Cytoplasm, Plasmids, cell wall, capsule, flagella
What is a plasma membrane? It separated the inside of the cell from the environment
What is the cytoplasm? Jelly like substance inside the cell that fills up the membranes and contains the organelles
What are plasmids? A circle of DNA
What is flagella? A long whip like extension that helps the cell move
What's inside of all eukaryotic cells? Plasma membrane, cytoplasm, nucleus,nucleolus, chromosomes, mitochondria, ribosomes, rough E.R., smooth E.R., Golgi complex, Vacuoles,
What is the nucleus? Large, round membrane bound structure inside the cytoplasm that contains the nucleolus, genetic material, and is the control center of the cell
What does the nucleolus do? Create ribosomes
What are chromosomes? Long thread like structures that contain genes
What are mitochondria? They produce energy during cellular respiration, the power house of the cell
What are ribosomes? They link amino acids to make proteins and are inside the rough E.R. or just floating around in the cytoplasm
What is the endoplasmic reticulum? A system of channels within the cytoplasm that transport materials. The smooth E.R. does not contain ribosomes, and the rough E.R. does contain ribosomes
What is the golgi complex? A stack of channels and vacuoles that prepare and secrete proteins for export
What are vacuoles? Sac-like structures in the cytoplasm that store food, water, and waste. Plant cells have one large central vacuole and animal cells have multiple
What are inside only animal cells? Lysosomes, and centrioles
What are lysosomes? Membrane bound sacs that contain digestive enzymes to help get rid of old cell parts
What are centrioles? A set of organelles made of micro tubules that help the cell divide during replication
What are inside only plant cells? Chloroplasts, and cell wall
What are chloroplasts? They contain chlorophyll and are located in the cytoplasm. They aid in photosynthesis
What is the cell wall? It protects and shapes the structure and is made up of cellulose?
Created by: lopiegabby