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7th grade Q2 Vocabulary
Terms in this set (45)
The basic unit of structure and function in living things
A group of similar cells that perform a specific function.
A body structure that is composed of different kinds of tissues that work together.
A group of organs that work together to perform a major function.
Organisms composed of many cells (Ex. tissue, humans, etc.)
Organisms composed of only one cell (Ex. Bacteria)
a taxonomic category of the highest rank, grouping together all forms of life having certain fundamental characteristics in common
One of two prokaryotic domains of life, the other being Bacteria.
single-celled organisms that lack a nucleus; prokaryotes
eukaryotic one-celled living organisms distinct from multicellular plants and animals: protozoa, slime molds, and eukaryotic algae
A kingdom made up of nongreen, eukaryotic organisms that have no means of movement, reproduce by using spores, and get food by breaking down substances in their surroundings and absorbing the nutrients
Kingdom of multicellular photosynthetic autotrophs that have cell walls containing cellulose
A kingdom made up of complex, multicellular organisms that lack cell walls, can usually move around, and quickly respond to their environment.
A unicellular organism that lacks a nucleus and membrane bound organelles
multicellular organisms, with a nucleus and organelles. Membrane bound
A tiny cell structure that carries out a specific function within the cell
contains a cell wall, chloroplast and large vacuole
A small living part of a multicellular organism that eats to gain energy and reproduces sexually.
A part of the cell containing DNA and RNA and responsible for growth and reproduction
organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy
An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
thin, flexible barrier around a cell; regulates what enters and leaves the cell
A rigid structure that surrounds the cell membrane and provides support to the cell
Cell organelle that stores materials such as water, salts, proteins, and carbohydrates
A jellylike fluid inside the cell in which the organelles are suspended
A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level
the movement of substances across a cell membrane without the use of energy by the cell
Diffusion of water through a selectively permeable membrane
Movement of molecules from an area of higher concentration to an area of lower concentration.
a random error in gene replication that leads to a change
a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
any mutation that reduces the reproductive success of an individual and is therefore selected against; harmful mutations do not accumulate over time
enhances the survival or reproductive success of an organism
Nutrients the body uses to build and maintain its cells and tissues
a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
one whose trait always shows up in the organism when the allele is present
An allele that is hidden whenever the dominant allele is present
An organism's genetic makeup, or allele combinations.
An organism's physical appearance, or visible traits.
Product of reproduction, a new organism produced by one or more parents
Ability to generate offspring
a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.
the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote.
diagram showing the gene combinations that might result from a genetic cross
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