Living vs. Non Living
Population Diversity
Organizational Levels
Cell Structure
Life Functions
100
Viruses are exceptions to the cell theory, but they have some characteristics of living things. What is one of these characteristics? 1. They are made up of many specialized cells. 2. They contain genetic material. 3. They reproduce by mitosis. 4. They contain chlorophyll.
2. They contain genetic material.
100
According to the heterotroph hypothesis, some early heterotrophs evolved into autotrophs because of their ability to synthesize organic compounds from water and 1. carbon dioxide 2. hydrochloric acid 3. oxygen 4. hydrogen
1. carbon dioxide
100

A group of tissues that perform a similar function is called_____. 

1. cells

2. tissues

3. organs

4. organ system

3. organs

100
Which organelle contains the enzymes needed to synthesize ATP in the presence of oxygen? 1. Mitochondria 2. Golgi body 3. Endoplasmic Reticulum 4. Nucleus
1. Mitochondria (the powerhouse of the cell, where respiration occurs) Golgi body - packages proteins Endoplasmic Reticulum - is for the transport of materials Nucleus - controls all cell activities and contains the DNA.
100

During photosynthesis

1. light reactions produce sugar.

2. light reactions produce NADPH and ATP.

3. light reactions photophosphorylate ADP.

4. light reactions produces both sugar and O2.


2. light reactions produce NADPH and ATP.


200
Which formula represents an organic compound? 1. Mg(OH)2 2. NaCl 3. C12H22O11 4. NH3
3. C12H22O11
200
An ecosystem broken down into 2 parts, A and B, will be self-sustaining if: 1. the organisms in A outnumber the organisms in B 2. the organisms in A are equal in number to the organisms in B 3. the type of organisms in B are eliminated 4. materials cycle between the organisms in A and the organisms in B
4. materials cycle between the organisms in A and the organisms in B
200
An organelle differs from an organ in that an organelle 1. is a substructure of a cell 2. contains one specific type of tissue 3. is larger than an organ 4. cannot be stained
1. is a substructure of a cell
200
Which structure includes all of the others? 1. nucleolus 2. nucleus 3. chromosomes 4. genes
2. nucleus
200
The body cells of most multicellular animals are not in direct contact with the external environment. These cells are supplied with materials from the environment by 1. a central nervous system 2. hydrolytic enzymes 3. sense receptors 4. a circulatory system
4. a circulatory system A circulatory system contains three components: a fluid to transport materials, a pump to pump the fluid to all cells, and a network of vessels to carry the fluid. A central nervous system will control and coordinate the body, hydrolytic enzymes will break down complex food molecules in the digestive tract and sense receptors will detect stimuli.
300
Which is an organic compound found in most cells? 1. glucose 2. water 3. sodium chloride 4. oxygen gas
1. glucose
300

Which of the following is true about secondary consumers in an ecosystem? 

1. They eat only plants. 

2. They are eaten by primary consumers. 

3. They contain the greatest total biomass in the
     system.

4. They are fewer in number than are primary      
     consumers. 

4. They are fewer in number than are primary      
     consumers.

300
Which sequence illustrates the increasing complexity of levels of organization in multicellular organisms? 1. organelle->cell->tissue->organ->organ->system-> organism 2. cell-> organelle-> tissue-> organ-> organ system-> organism 3. organelle-> tissue ->cell ->organ-> organ system-> organism 4. cell ->organism->organ system->organ->tissue->organelle
1. organelle->cell->tissue->organ->organ->system-> organism
300

Most cell membranes are composed principally of 1. DNA and ATP 2. proteins and lipids 3. chitin and starch 4. nucleotides and amino acids

2. lipids and proteins

300
A paramecium absorbs materials from its environment and circulates these materials throughout its' cytoplasm. Which life function is described by these activities? 1. synthesis 2. reproduction 3. respiration 4. transport
4. transport Synthesis means building up molecules, reproduction involves making new individuals, and respiration is the process of obtaining energy stored within food. Transport involves getting materials to and from cells or organisms and moving them within the cell or organism.
400
Which are the four most abundant elements in living cells? 1. carbon, oxygen, nitrogen, sulfur 2. carbon, oxygen, hydrogen, nitrogen 3. carbon, oxygen, sulfur, phosphorus 4. carbon, sulfur, hydrogen, magnesium
2. carbon, oxygen, hydrogen, nitrogen
400
The presence of cilia, an oral groove, and food vacuoles, and the absence of chloroplasts in a unicellular organism indicate that the organism carries on 1. sexual reproduction 2. autotrophic nutrition 3. extracellular digestion 4. heterotrophic nutrition
4. heterotrophic nutrition
400
Which sequence shows increasing complexity of levels of ecological organization? 1. biosphere, ecosystem, community 2. biosphere, community, ecosystem 3. community, ecosystem, biosphere 4. ecosystem, biosphere, community
3. community, ecosystem, biosphere
400

Which structure is present only in plant cells? 1. vacuole 2. cell wall 3. nucleus 4. centriole

2. cell wall

400
One function of the human endoskeleton is to 1. transmit impulses 2. produce blood cells 3. produce lactic acid 4. store nitrogenous wastes
2. produce blood cells Our skeletal system functions to support us and give us shape, to act as an attachment for muscles, for leverage for muscles to contract, and to produce blood cells in the marrow, or inside of certain bones. The nervous system transmits impulses, muscle cells produce lactic acid during strenuous workouts, and nitrogenous wastes are stored in the urinary bladder.
500
Which pair of compounds can be classified as inorganic? 1. nucleic acids and minerals 2. proteins and water 3. water and salts 4. nucleic acids and proteins
3. water and salts
500
According to the heterotroph hypothesis, autotrophs were able to evolve because heterotrophs made conditions more favorable by 1. producing chlorophyll for plants 2. adding carbon dioxide to the environment 3. storing energy in the bonds of inorganic compounds 4. manufacturing food from carbon dioxide and oxygen
2. adding carbon dioxide to the environment
500
A food chain includes crickets, frogs, snakes, and hawks. Which animals are the primary consumers? 1. crickets 2. frogs 3. snakes 4. hawks
1. crickets
500
Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the 1. concentration of water molecules inside and outside the cell 2. concentration of enzymes on either side of the cell membrane 3. rate of molecular motion on either side of the cell membrane 4. rate of movement of insoluble molecules inside the cell
1. concentration of water molecules inside and outside the cell Osmosis is the diffusion of water across a membrane and is a passive process. Therefore, movement occurs due to a concentration gradient set up on either side of the membrane. If there is more water inside the cell than outside, water tends to move out.
500
The fermentation of glucose by yeast normally yields: 1. lactic acid, CO2, and 2 ATP 2. alcohol, CO2, and 36 ATP 3. alcohol, CO2, and 2 ATP 4. CO2, H20, and 36 ATP
3. alcohol, CO2, and 2 ATP (Fermentation is a form of anaerobic respiration that yeast perform in the absence of oxygen. Only 2 molecules of ATP are formed and much of the unused energy is in the alcohol.)
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