A change in the rate or frequency of movements in response to environmental stimuli is called taxis
Indicate whether the statement is true or false.
ANS: F, kinesis
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Explain why mutualism is sometimes viewed as ‘reciprocal exploitation’. What will be an ideal response?
Which of the following statements explaining the differences in number and types of peripheral
proteins found on the inner and outer surfaces of cell membranes is correct? a. The functions of the membrane differ on the inside and outside of the cell. b. Not all proteins can pass through the membrane and, thus, more accumulate on the inside. c. Proteins on the outside of the membrane are synthesized at a slower rate than proteins on the inside of the membrane. d. Proteins on the outside of membrane are made extracellularly and are unable to penetrate the phospholipid bilayer and enter the cell. e. The external peripheral proteins are weakly attached to the membrane and are readily washed away.
Exocrine glands have no ducts and secrete their hormones into the surrounding interstial fluid or blood. Indicate whether the statement is true or false
During mitosis, which of the following normally occurs?
a. Homologous chromosomes pair. b. Replicated chromosomes line up on the equatorial plate. c. Tetrads form. d. Unreplicated chromosomes become oriented in the center of the cell. e. Maternal and paternal chromatids pair.