b1 flashcards. recall

What is a cell?

Basic unit of life.

What is a prokaryotic cell?

Cell without a nucleus; simple and small (e.g., bacteria).

What is a eukaryotic cell?

Cell with a nucleus and organelles; complex and larger (e.g., animal, plant)

What is nucleus?

Contains the cells DNA and controls the cells growth

What is cytoplasm?

First site of chemical reactions. E.g respiration

What is mitrochondria

Site of aerobic respiration and creates energy

What is cell membrane?

Controls what enters and leaves the cell

Ribosomes

Site of Presteigne synthesis

Cell wall?

Strengthens and supports the cell

Made from cellulose

Vacuole

Contains cell sap and supports the cell

Chloroplast

Site of photosynthesis and contains chlorophyll

Plasmid

Contains genetic materials

What is the difference between eukaryotic and prokaryotic cells

Prokaryotic do not contain nucleus, mitrochondria or ribosome whilst eukaryotic cells do

Prokaryotic cells are much smaller than eukaryotic

Prokaryotic cells are single-celled organisms

Why don’t animal cells contain chloroplast?

Animal cells don’t have chloroplasts because they don’t do photosynthesis — they get energy by eating, not by making food from sunlight.