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biology true and false

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PLAY
the first stage of cellulae respiration, glycolysis is an anaerobic process
true
during the light dependant reactions of photosynthesis, light energy is used to split wwater molecules generating protons and oxygen molecules
true
an ionic bond is formed when 2 atoms share electrons
false
polyploidy is more common in plants then animals
true
a chemical reaction is the process by which atoms or groups of atoms in substances are reorganized into different substances
True
organisms such as yeast can produce through mitotic division. during this type of reproduction nondisjunction is possible
false
once a person is born, the phenotype is set in place and remains stable throughout the lifetime
false
during meiosis, chromosome number is reduced through 3 rounds of cell division
false
homologous chromosomes are 2 chromosomes with identical DNA sequences
false
when an endothermic chemical reaction takes place, heat is released into the environment
false
an element is a pure substance that cannot be broken down into other substances by physical or chemical means
true
a catalyst increases the rate of reaction by increasing the net energy change of the reaction
false
it is possible to create a karyotype of a fetus
true
an inference comes before an observation
false
a woman with an X-linked dominant disorder will hae children who have a 50% chance to be affected by the trait also, regardless of their gender
true
alcohol fermentation is similar to lactic-acid fermentation in that NADH donates electron during this reaction and NAD+ is regenerated
true
the central dogma means that environmental factors have no influence on the transcription and translation of genes
false
embryonic stem cells are found in various tissues in the body and might be used to maintain and repair the same kind of tissue in wich they are found
false
the cell cycle is divided into interphase and mitosis
false
a prokaryote that grows and reproduces without oxygen is called aerobic
false
diffusion over large distances is slow and inefficient because it relies on random movement of molecules and ions
true
what is the relationship between individual I-1 and individual III-2 in figure 11-1
grandmother and grandson
for the trait being followed in teh pedigree, individuals II-1 and II-4 in figure 11-1 can be classified as
carriers
what type if inheritance does the trait represented by the shaded symbols in figure 11-1 illistrate
sex-linked
which event during meiosis leads to a reduction in chromosome number from 2n to n?
homologous chromosomes travel to opposite sides of the cell
what phenotype is depicted in figure 11-5
B blood type
what results from the removal of phosphate group from ATP
release of energy
which best describes the difference between an observation and an inference
you can record an observation; an inference id an idea
amino acids are the building blocks of which macromolecule
proteins
capillary action is the result of adhesion which aspect of water is responsible for this
hydrogen bonds between water and another substance
which of the following are produced by reactions that take place in the thylakoids and are consumed by reactions in the stroma
ATP and NADPH
what property is responsible for the fact that water and oil do not mix
polarity
what is the major difference between facilitated diffusion and active transport
active transport requires energy to move things against the flow
which statement is a fundamental principle of the cell theory
living organisms are composed of cells
which is present only in eukaryotic cells
nucleus
chloroplasts are organelles that convert light energy to sugars. These organelles are found only in plants. Which organelle are found only in animals
lysosomes
what is the cycle called shown in figure 8-3
calvin cycle
what did scientists discover using the earliest microscopes
bacteria or tiny organisms
one isotope of nitrogen differs from another in which way
it could have more nuetrons than the other
a stem cell has potential medical use because it
you can use the to replace bad cells in the body, unspecialized cells
if 2 heterozygous individuals are crossed, what percent of their offspring are also expected to be heterzygous
50%
which is an inference
after watching a plant for a week, you determine it needs more sunlight
Both Schwann and Virchow developed important theories about cells in the mid 1800s. which best explains the reason these theories were made within a few years of each other
new microscopes provided better viewing of cells
a hydrogen bond can form between a hydrogen atom and one molecule and which atom of another molecule?
flourine, nitrogen, and oxygen atoms
what is the role of cyclin- dependant kinases in the cell cycle?
start various activities that takeplace like proteins, nuclear division, and DNA replication
which is the best description of the events that take place during anaphase II
the sister chromatids are seperated and pulled to opposite sides of the cell
a plant cell is plaed in a hypertonic solution. what will happen to the plant cell?
it will shrivel up
which of the following doesnt occur as a cell gows larger and larger in size
ratio of the surface area to volume increases
according to the pedigree in figure 11-2, how many of the offspring in the III generation show the normal trait?
4
suppose the animal is heterozygous AaBbCc and the traits are not linked, when meiosis occurs, what is the total number of possible combinations of gametes that can be made for the traits
8
what is the role of oxygen in cellular respiration
to break down organic molecules, the last electron acceptor
a man with a certain syndrome marries a woman who is normal for the trait they have 6 children three girls, and three boys. all the girls have the samw syndrome as the father whereas none of the boys is affected. which type of heredity is NOT possible here?
Y-linked
which statement is true about bacterial cells?
the cells have no nucleus
at what point in the process of diffusion is dynamic equilibrium reached?
when there is continuous movement but no change
which is the best description of activation energy
heat added to initiate a reaction
which organelle convert sugars into energy
mitochondria
which situation is the phe of F2 offspring expected to follow the 9:3:3:1
a dihybrid cross for 2 unlinked traits
a cell has 12 chromosomes. how many will each daughter cell have?
12
what substance has at least one ionic bond
NaCl
living things do all of the following besides:
pass an identical DNA code to their offspring
which of the following could not only be a result of nondisjunction during meiosis of sperm formation and not egg foormation
XYY
the typical growth period of cell occurs during which stage of the cell cycle
interphase- G1
which element is found in proteins but NOT carbohydrates or lipids
N
A single covalent bond forms when two atoms do which of these?
when they share two electrons
which stage meiosis is responsible for the law of independent assortment
metaphase I
what is cancer cause by what happening to the DNa
mutations
during photosynthesis light energy is converted to the energy in chemical bonds, what also happens according to the predictions of the second law of thermodynamics
heat is being released
a cross between a white rooster and a black hen results in 100% blue andalusian offspring. when two of these blue offspring are mated, the probable phenotypic seen in their offspring would be
1:2:1 25% black 50% blue 25% white
DNA replication occurs during what stage of the cell cycle
interphase
which of the following is an observation
you record the air temperature every day for a week
a man heterozygous for blood type A marrries a woman heterozygous for blood type B the chance that their first child will have O type blood is
25%
SHAPE EQUALS
SIZE
biology means
study of life
cancer cells can reproduce rapidly because
they spend less time in Interphase
a spontaneous chemical occurs more rapidly when the reactants are held at 35 degrees C rather than 25 degrees C. why would ths be the case
the activation energy is lower
what substance on the plasma membrane helps identify chemical signs from outsid the cell
carbohydrate chains
what does a thylakoid do
thylakoid membranes have a large surface area that provides the space needed to hold large nubers of electron transporting molecules
which of the following correctly sequences the steps of the scientific method
observe, question, make a testable explanation, experiment, collect and analyze data, state findings
an atom of boron has five electrons. its second energy level has
3 electrons
if i take a #3 acid and equal strength base, i will get a solution of what pH value
7
what happens to the chromosomes in telophase
the relax
because it is often difficult to gather numerical data, ______________ information is collected
qualitative
mitosis if the division of
the nucleus
elements are pure substances made up of only one kind of
atom
a testable hypothesis that can form the basis for
an experiment
a ___________ increases the rate of a reaction by lowering the activation energy
catalyst
according to the law of __________ two alleles for each trait seperate during meiois, and during fertilization, the two alleles unite
segregation
the term __________ refers to the occurence of one or more sets of extra chromosomes in an organism
polyploidy
the movement of protons during the process of ATP production is called
chemiomosis
molecules that have an unequal distribution of charges are _____ molecules
polar
cytokinesis is the division of
cytoplasm