Guard cells contain chloroplasts
Indicate whether the statement is true or false.
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Which of the following is true about bacteria?
a. some bacteria have nuclei b. some bacteria have lipid bilayers enclosing their DNA c. some bacteria do not have DNA d. some bacteria do not have a cytoplasm e. some bacteria lack a plasma membrane
Which of the followings substance is NOT
secreted by an exocrine gland?
a. mucus b. hormones c. tears d. earwax e. digestive enzymes
Which of the following infectious agents and means of disposal are mismatched?
A. Carcasses of animals that died of anthrax must be incinerated to avoid endospores entering the soil. B. Drums made with animal hides should be treated with sterilizing gas to eliminate endospores. C. Mosquito bed nets must be washed in bleach weekly to eliminate any residual Plasmodium. D. Coagulation factors purified from blood must be heat-treated to destroy HIV.
What is a primary function of growth hormone?
A. Inhibits loss of calcium from bone B. Stimulates bone growth C. Lowers blood glucose level D. Initiates stress response E. Raises blood glucose level