Nature of Life
To be useful in science, a hypothesis must be
Testable
The positively charged particle in an atom is the
proton
In many cells, the structure that controls the cell's activities is the
nucleus
Bacteriophages are
viruses
The process of cell division results in
two daughter cells
A scientific theory is
a well-tested explanation that unifies a broad range of observations.
A covalent bond is formed by the
Sharing of electrons
Distinct threadlike structures containing genetic information are called
chromosomes
In prokaryotes, DNA molecules are located in the
cytoplasm
Sister chromatids are attached to each other at an area called the
centromere
The process in which two cells from different parents unite to produce the first cell of a new organism is called
sexual reproduction
In polymerization, complex molecules are formed by the joining together of
monomers
Which organelle converts the chemical energy in food into a form that cells can use
mitochondrion
The process by which the genetic code of DNA is copied into a strand of RNA is called
transcription
If a cell has 12 chromosomes, how many chromosomes will each of its daughter cells have after mitosis
12
The process by which organisms keep their internal conditions relatively stable is called
homeostasis
Proteins are polymers formed from
Amino acids
Cell membranes are constructed mainly of
lipid bilayers
Changes in the DNA sequence that affect genetic information are known as
mutations
Uncontrolled cell division occurs in
Cancer
An inference is
The logical interpretation of an observation
In a chemical reaction, a reactant binds to an enzyme at a region known as the
substrate
A tissue is composed of a group of
similar cells
In messenger RNA, each codon specifies a particular
amino acid
The phase of mitosis during which chromosomes become visible and the centrioles separate from one another is
prophase