biology-cells bayt

flaccid

(adj.) limp, not firm; lacking vigor or effectiveness

cell membrane

A cell structure that controls which substances can enter or leave the cell. (semi permeable)

concentration gradient

A difference in the concentration of a substance across a distance.

cell wall

A rigid layer of nonliving material that surrounds the cells of plants and some other organisms. only plant cell walls are made from cellulose.

Mitochondria

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.(power house of the cell)

red blood cells

Blood cells that carry oxygen from the lungs to the body cells.

nerve cells

Cells that carry information in the body

Nucleas

Contains genetic material that controls the activities of the cell

Photosynthesis

Conversion of light energy from the sun into chemical energy.

Osmosis

Diffusion of water through a selectively permeable membrane

active transport

Energy-requiring process that moves material across a cell membrane against a concentration difference

Permanent vacuole

Filled with cell sap to help keep the cell turgid(swollen)

Ribosomes

Makes proteins (tiny structures)

Diffusion

Movement of molecules from an area of higher concentration to an area of lower concentration.

Epithelium cells

Secretion, absorption, protection. Cells that line the interior and exterior body surfaces

Cell

The basic unit of life and the building block of tissues and organs

sperm cell

a male reproductive cell that can fertilize an egg cell(mens only purpose, take his money sis)

egg cell

also called ovum; female gamete

prokaryotic cell

cell that does not have a nucleus or other membrane-bound organelles.

specialized cells

cells uniquely suited to perform a particular function

Define eukaryotic cell

have nucleus (largest organelle) which contains DNA; other organelles are membrane-bound and found in the cytoplasm

what is the light stage of photosynthesis?

me you asking boss? i not google uk and meself dk

what is the transfer from cell to organism?

molecule-cell-tissue-organ-organ system- organism

Chloroplast

organelle found in cells of plants that contains the green pigment, chlorophyll, which absorbs light energy for photosynthesis. Contains the enzymes needed for photosynthesis.

turgor pressure

the pressure created by water pushing up against the cell wall