Most of the energy used by life on Earth comes from the
Light energy is converted to chemical energy through the process of
Which of the following qualities do fingerprints and DNA fingerprints...
Sexual reproduction includes
The X and Y chromosomes are called
The action of ______ returns carbon from dead plants and animals...
Normal human males develop from fertilized eggs containing which of...
When crossing-over takes place, chromosomes
The major atmospheric by-product of photosynthesis is
Which of the following is part of the cell theory?
The size to which cells can grow is limited by their
Which of the following is NOT a part of the carbon cycle?
What level of organization is the small intestine?
What do chloroplasts and mitochondria have in common?
The diploid number of chromosomes in a human skin cell is 46. The...
The carbon cycle makes carbon compounds continuously available in an...
Diffusion is the movement of a substance
When two solutions of unequal strength are put together with no...
During DNA replication, a complementary strand of DNA is made from...
In a cell, proteins are made on the
A mutation caused by a piece of DNA breaking away from its chromosome...
A structure within a eukaryotic cell that carries out specific...
Mitosis is the process by which
Organisms that are not autotrophs
On Earth, under normal conditions, all matter is composed of
The genetic material that provides instructions for making proteins is
Which of the following pairs contains unrelated items?
Which of the following does not require energy?
The two types of nucleic acids are
Which of the following is an example of a prokaryotic cell?
In humans, gametes contain
What would be the blood type of a person who inherited an A allele...
Chromotids are
Which of the following does not provide new genetic combinations?
Acidic solutions have a pH that is
The first three phases of the cell cycle are collectively known as
Plant cells have a large membrane-bound compartment in which water,...
The phase of mitosis that is characterized by the arrangement of all...
When a root is immersed in a solution, it swells. What does that...
Sharing of electrons in the outer energy levels of two atoms
Homologous chromosomes are pairs of chromosomes containing genes that...
As a result of mitosis, each of the two new cells produced from the...
The amount of guanine in an organism always equals the amount of
Homeostasis is
The reverse reaction of cellular respiration is called
Long chains of amino acids are found in
Each nucleotide triplet in mRNA that specifies a particular amino acid...
Sharing of electrons in the outer energy levels of two atoms
Molecules that are too large to be moved across a cell membrane can be...
Which of the following is not found in RNA?
Water is a polar molecule because
During transcription,
Which of the following shows the correct sequence of the cell cycle?
A haploid cell is one that
The organelle that moves proteins and other substances through the...