A researcher is studying several different Rhodnius mutants. One of her mutants only molts normally up until the 2nd nymph stage. After that, insects continue to molt but keep demonstrating body plans of the 2nd nymph stage
What is the likely effect of this mutation in
Rhodnius? Choose all that apply.
A. The juvenile hormone is not expressed
B. The ecdysone hormone is not expressed
C. The prothoracicotropic hormone (PTTH) is
not expressed
D. The juvenile hormone is over-expressed
E. The ecdysone hormone is over-expressed
F. The prothoracicotropic hormone (PTTH) is
over-expressed
D
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Peristalsis is:
A. waves of muscular contractions that move food through the digestive system. B. a band of muscle that opens to allow small amounts of digested food to enter the small intestine. C. the mechanical breakdown of food in the stomach. D. the chemical breakdown of proteins. E. the formation of an ulcer in the stomach.
Which element is considered an essential micronutrient for plants?
a. zinc b. potassium c. hydrogen d. arsenic e. platinum
An essential amino acid is one that must be provided in the diet
____________________ Indicate whether the statement is true or false.
Electron carriers In the carbon reactions, carbon dioxide molecules are reduced by the addition of electrons carried from the light reactions by __________.
a) ATP b) NADP+ c) NADPH d) Oxygen e) Water