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biology exam freshman
Terms in this set (39)
Describe a Scientific hypotheses
A testable answer to the question you are trying to answer
A controlled experiment allows the scientist to isolate and test
A Single variable
What are the 7 characteristics of all living things?
Made of cells, maintain homeostatis, requires energy, reproduce, display heredity, respond to stimuli and evole
The process by which organisms keep their internal conditions fairly constant is called
Which cell structure contains the cell's genetic material and controls many of the cell's activities?
What are the 2 types of Cells?
Which organelle makes proteins using coded instructions that come from the nucleus?
Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use?
Prokaryotes lack what?
Nucleus or anything related to it
Which organelles would you expect to find only in plant cells?
Chloroplast or cell wall
List the taxonomic levels in order from least specific to most specific?
Domain, kingdom, phylum, class, order, family, genius, species
All organisms in the kingdoms Protista, Plantae, Fungi, and Animalia are
Which of the organic compounds is the main source of energy for living things?
A substance that accelerates the rate of a chemical reaction is called a(an)
Which biomolecules contain carbon, hydrogen, oxygen, nitrogen and phosphorus?
List 3 ways that virus viruses differ from cells?
Not living, must have host to reproduce and do not respond to stimuli
Diffusion is the movement of molecules from
high to low concentration
The diffusion of water across a selectively permeable membrane is called
Transport of molecules into and out of cells allows organisms to maintain -
List 2 purposes of nucleic acids in cells?
Instructions to make proteins and holds your genetic code
During a lytic infection, the host cell is
What is the main function of the cell membrane?
Regulate what goes in and out of the cell
Enzymes affect the reactions in living cells by changing the
Viral diseases can be treated, cured or prevented
Macromolecules can be broken down into their monomers during the process called:
The process of converting food energy into chemical energy takes place in which of the following cell organelles?
Cytoplams and mitochondria
What are the reactants in cellular respiration?
glucose and oxygen
What are the products in cellular respiration?
ATP, CO2, & H2O
Which of the cycles in cellular respiration produces the greatest amount of energy?
Unlike DNA, RNA contains
What is an enzyme? What is a catalyst?
A protein that lowers the activation energy needed to start a chemical reaction-
Catalyst, a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
What are the reactants of photosynthesis?
carbon dioxide, water, light energy
What are the products of photosynthesis?
oxygen and glucose
Explain dehydration synthesis....what is made???
Glucose molecules joining to form polymers and water
What is used to split a carbohydrate in hydrolysis???
What happens to a cell during G1?
Cell grows and performs normal cell functions
60. What happens to a cell during the S phase?
DNA is replicated
61. What are the phases of mitosis?
Prophase, metaphase, anaphase and telophase
62. What type of cells complete mitosis?
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