Bio Test 4.1-6.5
In the light independent reactions of photosynthesis...
CO2 enters the Calvin cycle and sugars are made
Which is the following stamens best described the process of photosynthesis?
Chloroplast absorb sunlight and store chemical energy
Energy is release from an ATP molecule for cellular processes when it-
Has a phosphate group removed
Which is the term for the group of proteins that organize and conenss s long strands of DNA into tight coils?
Histones
Where does the chemical energetic to produce ATP come from?
The breakdown of carbon molecules into smaller molecules
Which of the following best describes the electron transport chain in photosynthesis?
a series of proteins located in the thylakoids membrane
In the electron transport chain, energy from the Krebs cycle is used to pump hydrogen ions-
across the inner mitochondrial membrane
During which phase of mitosis do sister chromatids separate form each other?
anaphase
What is the term for the programmed death of cells?
apoptosis
Vegetative reproduction budding and fragmentation are examples of what?
asexual mitotic reproduction
The most common form of reproduction among prokaryotes-?
binary fission
Which is the main difference between binary fission and mitosis?
binary fission occurs in single celled organism
Stem cross are important to multicellular organism because of their-?
capacity to differentiate
The function of the light dependent reactions is-
capture and transfer energy
Which of the following statement best describes cellular respiration?
carbon based molecules from food and oxygen are used to make ATP
The light independent reactions of photosynthesis need?
carbon dioxide
Which end product of alcoholic fermentation is important in the baking industry?
carbon dioxide
Substances known to produce or promote cancer are called-?
carcinogens
Which phrase best describes the function of the ATP molecule?
carries energy
During the gap 1 stage of the cell cycle a cell-
carries out its normal function
Which sequence shows the progression from least complex structure to most complex structure?
cell tissue organ organ system
Which of the following is a direct result of a normal cells ability to express only certain genes?
cells can differentiate and specialize
Which of the following is the source for energy used in chemosynthesis?
chemical compounds
The main light absorbing molecules found in plant leaves are-
chlorophyll
Which of the following statements are true of cytokinesis?
completes the cell cycle
The process of mitosis and cytokensis produce two identical-
daughter cells
Which of the following phrases best describes cytokinesis?
division of cytoplasm
Which of the following takes place in the light dependent reactions of photosynthesis?
energy is captured
Starfish that reproduce by splitting into pieces are reproducing by what?
fragmentation
Which phrase best describes an organ system?
groups of organs that work together
Proteins that bind to cells and simulate cell division are called?
growth factors
Which phrase best describes the main role of fermentation?
it allows glycolysis to continue making a small amount of ATP
Which of the following statements is true about as sexual reproduction?
it produces genetically identical offspring
Two internal factors that are important in advancing the cell cycle are?
kinases and cyclins
Which end products of fermentation cause the burning feeling in muscles?
lactic acid
In which stage of cell cycle do the nucleus and its contents divide?
mitosis
The process of organizing and condensing DNA into its compact form takes place at the start of-
mitosis
What is a term for an organism that makes its own source of chemical energy?
producers
What is the main function of the Krebs cycle?
producing molecules that carry high energy electron transport chain
Which of the following are end products of glycolysis?
pyruvate and ATP
Which phrase phrase about fermentation is correction?
takes place without oxygen
What is the relationship between the photosynthesis and the Calvin cycle?
the photosynthesis transfers hydrogen moons and carbon dioxide to Calvin cycle
Which of the following limits the maximum size of a cell
the ratio of cell surface area to volume
Why does a runner breathe hard for a few minutes after a race?
the runners cells are making up for an oxygen deficit
Which is the following is true for all cells?
they all use chemical energy
Which statement is true about the rates of cells division in eukaryotes?
they vary greatly within an organism
What is the function of oxygen in cellular respiration?
to pick up electrons at the end of the electron transport chain
Which type of stem cell can grow into any other cell type-?
totipotent
which of the following best describes cancer?
uncontrolled cell growth
Where do the hydrogen ions for the photsystems of the light dependent reactions come from?
water
