Flashcards in Life Science Deck (120)
These plants lack true roots, stems, and leaves.
- range from single cell to seaweed
-mostly inhabit lakes and oceans
-fungi; molds, yeasts, mushrooms
Algae and fungi
Two different organisms (fungi and algae), living together symbiotically
These plants lack chlorophyll and thus cannot manufacture food; they are either parasites or saprophytes
These plants lack seeds and reproduce by means of spores. They do have stems, roots, and leaves. Spores develop into a new plant without fertilization
Cone-bearing plants (including pines) with seeds exposed on cone scales
Flowering plants that bear their seeds within fruits
Develops into a seed after plant reproduction. In seed plants, it is the structure that gives rise to and contains the female reproductive cells.
-in flowering plants, it is located in the actual flower, the part of the carpel known as the ovary (which becomes the fruit)
The plant equivalent of the umbilical cord
A metabolic pathway that converts light energy into chemical energy. Plants use the energy from the sunlight to convert carbon dioxide from the atmosphere, plus water, to simple sugars.
A green colored magnesium containing pigment, essential to photosynthesis
The smallest amount of living matter; the unit of structure and function for all organisms
Semi permeable part of the cell that allows some substances to pass while excluding others
Main material within a cell, varies in consistency from a fluid to a semi solid. Consists of functional bodies such as centrosome, ribosomes, mitochondria, Golgi bodies, and vacuoles. (Also plastids in plants)
The organelle that contains the cells DNA and is the control center of the cell
The organelle in which amino acids are hooked together to make proteins
The organelle that breaks down food molecules to make Adenosine triphosphate (ATP). "The powerhouse of the cell". Involved in signaling, cellular division, differentiation, and cell death
The organelle that processes and transports proteins and other materials out of the cell
Golgi complex (Golgi Bodies)
Bodies with chlorophyll that carry out photosynthesis in plant cells
The breaking down of chemicals in the body into a form that can be absorbed; also the process by which the body breaks down chemicals into smaller components that can be digested by the blood stream.
Converted into various sugars by the action of several enzymes (including saliva and ptyalin)
Transformed into glycerol and fatty acids by the combined action of bile from the liver and the enzyme lipase from the pancreas
Are broken apart to their constituent amino acids
Millions of projections lining the small intestine that absorb the final products of digestion (sugars, glycerol, fatty acids, amino acids)
Here digestion occurs where food is broken down mechanically and chemically by churning and mixing the food with enzymes
Area where the majority of digestion and absorption occur
Where absorption occurs in digestion
The stomach and gastro-intestinal tract
An organ system that moves nutrients, gases, and wastes to and from cells, helps fight diseases, and stabilizes body temperature and pH to maintain homeostasis. Composed of the cardiovascular system and the lymphatic system.
Humans have a _________ cardiovascular system, that is, the blood never leaves the network of arteries, veins, and capillaries.
Closed cardiovascular system
The main components of the human circulatory system
Heart, blood, and blood vessels