bio test 2
the diagram of the human life cycle shows that
meiosis produces a haploid sperm and egg cells
What chromosomes belong to a normal human male?
44 autosomes, one X chromosome, and one Y chromosome
nucleosomes are made of
DNA and histone proteins
A horse eating some hay is an example of what
a consumer eating a producer
What must pyruvic acid be converted to before it can enter the citric acid cycle
acetyl CoA
alleles are described as
alternate versions of a gene
which of the following techniques is used to collect fetal cells during pregnancy for genetic testing
aminocentesis
what is the difference between a benign and a malignant tumor
benign tumors do not metastasize; malignant tumors do
which of the following are produced as a result of cellular respiration
carbon dioxide, water, and ATP
homologous chromosomes
carry genes controlling the same inherited characteristics
during metaphase
chromosomes line up in the middle of the cell
which stages occur in the mitochondria
citric acid cycle and electron transport
the principal that energy cannot be created or destroyed is known as
conservation of energy
Where in the cell does glycolysis occur
cytoplasm
When a molecule absorbs a photon, one of its electrons is raised to the what state.
excited
Cells with a higher concentration of ions than the surrounding medium tend to
expand
what is the function of the stomata
gas exchange
which of the following is the correct sequence of stages in cellular respiration
glycolysis, citric acid cycle, and electron transport
the shorter the wavelength of visible light, the
greater the energy
in humans, the inheritance of what is best explained as being polygenic
height
linked genes are usually
located close together on a chromosome
a cell that neither gains nor looses a net amount of water at equilibrium when it is immersed in a solution
isotonic to its environment
what happens when a single amino acid substitutes a hemoglobin gene
it may alter a protein so that it no longer functions properly
electron transport takes place in the
mitochondria
one difference between mitosis and meiosis
mitosis produces cells genetically identical to the parent cell, but meiosis does not
which of the following reactant primarily come(s) from the air
oxygen and carbon dioxide
What data or test would you seek to determine whether or not a trait is sex linked?
pedigree
what name is give to the collection of traits exhibited by an organism
phenotype
what name is given to a discrete packet of light
photon
a rock on the top of a mountain contains what energy
potential
the correct sequence of stages of mitosis is
prophase, metaphase, anaphase, telophase
duplicated chromosomes consists of two
sister chromatids
what is energy
the capacity to cause change
osmosis can be defined as
the definition of water across a selectively permeable membrane
what is the key to the recognition of codominance
the heterozygote expresses the phenotype of both homozygotes.
what is the key to the recognition of incomplete dominance
the phenotype of the heterozygous falls between the phenotypes of the homozygous
a balloon permeable to water but not to glucose contains a 70% glucose solution. A beaker contains a 35% glucose solution, which of the following is true
the solution in the balloon is hypertonic relative to the solution in the beaker
A balloon permeable to water but not to glucose contains a 10% glucose solution. A beaker contains a 5% glucose solution. What will happen when the balloon is submerged in the beaker
the volume of water in the beaker will decrease
the color that we see when at a pigmented object is
the wavelength that are reflected or transmitted by the pigmented object
how many nucleotides make up a codon
three
The transfer of information from DNA to RNA is called
transcription
the karyotypes in the figure shows
trisomy 21, a cause of down syndrome