Living vs. Non Living
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.
Which activity is an example of a decomposer recycling organic compounds back into the environment?
(1) A tree synthesizes starch from simpler molecules. (2) A bacterial cell performs photosynthesis. (3) A fungus breaks down the body of a dead animal.
3. A fungus breaks down the body of a dead animal.
An increase in human population puts a stress on resources that can be renewed, such as (1) trees and coal (2) oil and natural gas (3) water and gasoline (4) water and trees
4. water and trees
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 cellular respiration occurs)
Which function is called autotrophic nutrition?
photosynthesis
Which formula represents an organic compound? 1. Mg(OH)2 2. NaCl 3. C12H22O11 4. NH3
3. C12H22O11
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. materials cycle between the organisms in A and the organisms in B
3. materials cycle between the organisms in A and the organisms in B
Global warming is most closely associated with
(1) increased use of solar panels
(2) increased industrialization
(3) reducing the rate of species extinction
(4) removal of environmental wastes
2. increased industrialization
Which structure includes all of the others? 1. nucleolus 2. nucleus 3. chromosomes 4. genes
2. nucleus
Which function allows molecules to move from low concentration to high concentration?
Active transport
Which is an organic compound found in most cells? 1. glucose 2. water 3. sodium chloride 4. oxygen gas
1. glucose
New York State residents pay a fee when purchasing beverages sold in aluminum cans and plastic bottles. This money is returned to purchasers when they return these items for recycling. Programs such as these are an attempt to (1) encourage people to spend more money on their beverages (2) conserve the resources these containers are made from (3) totally eliminate the use of reusable containers
(2) conserve the resources these containers are made from
Humans deplete the most resources when (1) using wind energy as a power source (2) generating power by using fossil fuels (3) using water power to generate electricity (4) recycling glass and plastics
(2) generating power by using fossil fuels
Most cell membranes are composed primarily of 1. DNA and ATP 2. proteins and lipids 3. chitin and starch 4. nucleotides and amino acids
2. proteins and lipids
Which function allows cells to make DNA?
DNA replication
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
The presence of cilia, an oral groove, and food vacuoles, and the absence of chloroplasts in a unicellular organism indicate that the organism carries out 1. sexual reproduction 2. heterotrophic nutrition 3. autotrophic nutrition
2. heterotrophic nutrition
Which of the organisms below are autotrophs in a food web?
1. Killer whales
2. Vegetation
3. Grasshoppers
4. Herrings
Vegetation
Which cell will lyse (burst) if placed in distilled water?
1. carrot cell
2. onion cell
3. muscle cell
4. banana cell
3. muscle cell
Which function below includes all the other functions?
1. transportation
2. Temperature regulation
3. cellular respiration
4. Homeostasis
4. homeostasis
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
Some birds have recently modifi ed their migratory behavior. Instead of fl ying to warmer climates during the winter months, the birds are remaining in northern areas where they can consume discarded food that is abundant in landfi lls. As a result of this change in migratory behavior, many insect populations that the birds normally feed on in the warmer climate areas are now increasing. This is an example of human activity
(1) interfering with ecological succession (2) increasing competition for infinite resources (3) altering the equilibrium of ecosystems
(3) altering the equilibrium of ecosystems
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
Give the similarity and the difference between osmosis and diffusion.
similarity - both involve movement of particles from high concentration to low concentration
difference - osmosis only involves water; diffusion - involves water and many other types of molecules
Which process allows for genetic recombination that causes variation?
sexual Reproduction/meiosis/crossing-over