What is the correct sequence of structures through which air passes through on the way into the mammalian lung?
A. pharynx ? larynx ? trachea ? bronchi ? bronchioles ? alveoli
B. larynx ? pharynx ? trachea ? bronchi ? bronchioles ? alveoli
C. pharynx ? trachea ? larynx ? bronchi ? bronchioles ?alveoli
D. bronchi ? bronchioles ? pharynx ? larynx ? trachea ? alveoli
E. alveoli ? bronchioles ? bronchi ? trachea ? larynx ? pharynx
A. pharynx ? larynx ? trachea ? bronchi ? bronchioles ? alveoli
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Characteristics that have arisen in organisms as a result of common evolutionary descent are said to be ______________ characteristics.
A. homologous B. homoplastic C. adaptive D. derived E. ancestral
Mendel kept detailed records of the genetic traits of parent plants and their offspring plants. Among observations, he found that some traits would be expressed, whenever one particular allele was present, and called this allele Select one:
a. homozygous. b. dominant. c. recessive. d. homologous. e. heterozygous.
The ________ is the tube that conducts sperm from the epididymis to the urethra
Fill in the blank(s) with correct word
An osmosis investigation was conducted using chicken eggs to represent cells with semi permeable membranes. The mass of each egg was measured to determine how much water diffused into or out of the eggs. The eggs were first soaked in vinegar to dissolve the shell. Each egg was then placed in one of three different solutions for 24 hours. The table below shows the results of the investigation. Based on this experiment, which of the following should be inferred about cells with semi permeable membranes?
A. Substances other than water may also cross the cell membrane. B. Substances other than water may block pores in the cell membrane. C. Water enters the cell when placed in environments of high water concentration. D. Water leaves the cell when placed in environments with a low concentration of solutes