65.Food Shelter and Protection
66. a particular section, group, or type of people or animals living in an area or country.
67. a community of animals, plants, or humans among whose members interbreeding occurs.
68. Rainfall is a limiting factor because not alot of areas get water around here.
69. Individual, Species, Organism
Population
Community
Ecosystem
Biome
Biosphere
B.
Passive transport doesn't requireenergy (ATP), active transport doesrequire energy. Passive transport moves molecules WITH the concentration gradient (high to low), while active transport moves molecules AGAINST the concentration gradient (Low to High).
<span>b. gravel on the bottom of the aquarium</span>
An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system. <span>
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Biotic factors:
Plants
Microorganisms
Macroorganisms
Nucleus - regulates all cell activity, and also holds the DNA
Smooth endoplasmic reticulum - lipid and carbohydrate synthesis.
Rough er - produces and modifies proteins
Located next to the nucleus
Golgi apparatus - <span>modify, sort, and package macromolecules for cell secretion </span>
Ribosome - <span> assembles the twenty specific amino acid molecules to form the particular protein molecule</span>
Mitochondria - converts energy into compounds that are easier for the cell to use
Chloroplast -<span> captures the energy from sunlight and converts it into food that contains chemical energy in a process called photosynthesis</span>
Lysosomes - breaks down, recycles macromolecules (lipids, carbohydrates, and proteins)
Perioxisome - where hydrogen peroxide and other harmful molecules are broken down by enzymes
Plasma membrane - controls the kinds and amounts of substances moving into and out of the cell; helps maintain cytoplasmic volume and composition
Cytoskeleton - structurally supports, impacts shape and moves cell and its componants
Centrioles - two perpendicular cylinders that form mitotic spindle fibers and microtubules for cilia and flagella, helps organize cell division
Cytoplasm - holds all organelles in place
Vacuole - stores water, salts, protein, and carbohydrates
Vesicles - <span>contains substances that recently entered the cell. Stores and transports newly synthesized molecules.</span>
Cell wall - supports and protects the cell, rigid barrier
A major role of the cell wall is to form a framework for the cell to prevent over expansion. Cellulose fibers, structural proteins, and other polysaccharides help to maintain the shape and form of the cell
