Question Pack 2 Flashcards
From which germ layer(s) do the tissues of the heart and blood vessels differentiate? Ectoderm Mesoderm Endoderm
The heart and blood vessels both differentiate from the mesoderm
Which of the following organelles most resembles the Golgi apparatus when an intact eukaryotic cell is viewed under the electron microscope?
Smooth ER
Peristalsis
The involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements that push the contents of the canal forward.
A resident of a famine area who appears undernourished and extremely emaciated has eaten only starches for the past 3 months. A urine analysis shows that a large amount of nitrogen is being excreted. This is most likely evidence of:
Breakdown of the bodys own structural proteins to provide energy
A stable, differentiated cell that will NOT divide again during its lifetime would most likely be found in which of the following stages of the cell cycle?
G1 OR G0. Usually G0, but can be G1
____ is copying
____ is changing the language
Transcription
Translation
In human females, mitotic divisions of oogonia that lead to formation of presumptive egg cells (primary oocytes) occur between:
fertilization and birth only
The question asks the examinee to identify the stages in the human female life cycle between which all the mitotic divisions that lead to primary oocytes occur. These stages occur in the following order: fertilization, birth, puberty, menopause. All of the mitotic divisions that form primary oocytes occur prior to birth.
Adaptive Radiation
Adaptive radiation involves the divergence of one species into multiple species over time, which can occur when subgroups of the original species are separated or isolated in different environments so that these subgroups evolve independently of one another.
Which participant in the electron transport chain has the greatest attraction for electrons?
Oxygen
Who has a lower bone density women or men?
Women
