life is organized in a hierarchical fashion. Which of the following sequences correctly lists that hierarchy as it increases in complexity?
molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem.
Your instructor ask you to look into your microscope to see a prokarytoic cell. You will be looking for a cell that
has a membrane
which of the following statements about the domain bacteria is true?
all bacteria lack a nucleus
Organisms that are prokaryotes are in the domains
archaea and bacteria
Which of the following statements is not consistent with Darwin's theory of natural selection?
a hypothesis is
an explanatory idea that is broad in scope and supported by a large body of evidence
the role of a control in an experiment is to
provide a basis of comparison to the experimental group
which of the following statements regarding matter is false?
matter can be created and destroyed
Which of the following particles is found in the nucleus of an atom
protons and neutrons
What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons
What is the fundamental difference between covalent and ionic bonding?
In covalent bonding, both partners end up with filled outer electron shells; in ionic bonding, one partner does and the other does not
Compared to a solution of pH 3, a solution of pH 1 is
100 times more acidic
The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, which of the following is the most logical chemical explanation for this phenomenon?
fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air.
When full, the innermost electron shell of argon contains BLANK electrons, and the outermost shell contains BLANK electrons
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many electrons does boron have
Lactose intolerance is the inability to
What is the general function of enzymes within a cell
to speed up chemical reations
Which of the following contains a carboxyl and an amino group
A major type of lipid found in cell membranes is
Which of the following options correctly pairs a polymer and its monomer
Sucrose is a disaccharide made up of which of the following sugars?
glucose and fructose
Which of the following reaction involves water being added and results in polymers being broken down in monomers?
one centimeter =
The idea that all living things are composed of cells and that all cells come from other cells defines
You are told that the cells on a microscope slide are plant, animal, or bacterial. You look at them through a microscope and see cell walls and membrane-bound organelles. You conclude correctly that the cells
are plant cells
The function of the nucleolus is
to manufacture polypeptides
causes an accumulation of lipids in brain cells
The stroma is the
space between the inner and outer membranes of a mitochondrion
A woman is having trouble becoming pregnant. Examination of her partner's sperm indicates that dynein arms are missing from the flagella in his sperm cells. A physician explains that this could interfere with fertility by
preventing the sperm from attaching to the egg cell
DNA replication steps
1. unzipping (separating) 2. complementary base pairing 3. sugar phosphate, backbone formed connecting nucleotides in the two strands