Praxis 5005- Life Science
Inanimate - answer classification of nonliving things
Cell theory - answer1. All living things are composed of cells
2. Cells are the basic units of structure and function in living things
3. New cells are produced from existing cells
Organization of life - answer cell, tissue, organ, organ system, organism
Prokaryote - answer A unicellular organism that lacks a nucleus and membrane bound
organelles
Eukaryote - answer A multicellular organism made up of cells that contain their DNA in
a nucleus.
Organelle - answerA tiny cell structure that carries out a specific function within the cell
Cellular membrane - answerFluid, permeable outside covering of the cell. In a plant cell,
this is a cell wall and it is rigid.
Nucleus - answercommand center of cell
Where the DNA lives in Eukaryotic cells
Mitochondria - answerPowerhouse (energy source) of the cell
Cytoplasm - answerwater-like substance in the cell
Bacteria vs Virus - answerProkaryotic cells and can only been seen under a microscope
Bacteria - answersingle-celled organisms that lack a nucleus; prokaryotes
harmless
Virus - answerA tiny, nonliving particle that invades and then reproduces inside a living
cell.
Cause diseases
Animal cells vs plant cells - answerEukaryotic
Sexual Reproduction - answerinvolves two parents
, Each parent contributes a gamete to the process of reproduction
Gametes - answersex cells
Asexual Reproduction - answerInvolves only one parent
Binary fission - answera single parent cell doubles its DNA, then divides into two cells
Occur in bacteria
Budding - answera small growth on the surface of parent breaks off to continue growing
into adulthood
Occur in yeast and some animals
Fragmentation - answera piece of an organism breaks off, and those pieces develop
into a new organism
Happens with starfish
Parthenogenesis - answerwhen an embryo develops from an unfertilized cell
Occurs in invertebrates, in some fish, amphibians, and reptiles
Interphase - answertechnically not part of mitosis
the cell prepares for division
It plumps up and replicates its DNA within its nucleus
Prophase - answerthe DNA tightly coils into chromosomes to make splitting efficient
Nuclear membrane dissolves
Microtubes or spindle fibers move to opposites side of the cell
Metaphase - answerthe chromosomes move to the middle of the cell
spindle fibers attach to each chromosome
Anaphase - answerthe spindle fibers begin to pull apart the chromosomes, bringing
them to opposites sides of the cell for efficient splitting
Telophase - answerthe chromosome at either side of the cell. the two new cells pinch
off, forming two identical sister cells of the original cells
Inanimate - answer classification of nonliving things
Cell theory - answer1. All living things are composed of cells
2. Cells are the basic units of structure and function in living things
3. New cells are produced from existing cells
Organization of life - answer cell, tissue, organ, organ system, organism
Prokaryote - answer A unicellular organism that lacks a nucleus and membrane bound
organelles
Eukaryote - answer A multicellular organism made up of cells that contain their DNA in
a nucleus.
Organelle - answerA tiny cell structure that carries out a specific function within the cell
Cellular membrane - answerFluid, permeable outside covering of the cell. In a plant cell,
this is a cell wall and it is rigid.
Nucleus - answercommand center of cell
Where the DNA lives in Eukaryotic cells
Mitochondria - answerPowerhouse (energy source) of the cell
Cytoplasm - answerwater-like substance in the cell
Bacteria vs Virus - answerProkaryotic cells and can only been seen under a microscope
Bacteria - answersingle-celled organisms that lack a nucleus; prokaryotes
harmless
Virus - answerA tiny, nonliving particle that invades and then reproduces inside a living
cell.
Cause diseases
Animal cells vs plant cells - answerEukaryotic
Sexual Reproduction - answerinvolves two parents
, Each parent contributes a gamete to the process of reproduction
Gametes - answersex cells
Asexual Reproduction - answerInvolves only one parent
Binary fission - answera single parent cell doubles its DNA, then divides into two cells
Occur in bacteria
Budding - answera small growth on the surface of parent breaks off to continue growing
into adulthood
Occur in yeast and some animals
Fragmentation - answera piece of an organism breaks off, and those pieces develop
into a new organism
Happens with starfish
Parthenogenesis - answerwhen an embryo develops from an unfertilized cell
Occurs in invertebrates, in some fish, amphibians, and reptiles
Interphase - answertechnically not part of mitosis
the cell prepares for division
It plumps up and replicates its DNA within its nucleus
Prophase - answerthe DNA tightly coils into chromosomes to make splitting efficient
Nuclear membrane dissolves
Microtubes or spindle fibers move to opposites side of the cell
Metaphase - answerthe chromosomes move to the middle of the cell
spindle fibers attach to each chromosome
Anaphase - answerthe spindle fibers begin to pull apart the chromosomes, bringing
them to opposites sides of the cell for efficient splitting
Telophase - answerthe chromosome at either side of the cell. the two new cells pinch
off, forming two identical sister cells of the original cells
