Swollen lymph nodes might indicate: a) high blood pressure b) an infection c) an irregular heartbeat. d) varicose veins.

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Omg substrates with the same size and shape as the active site will bind to the enzyme. why is the key labeled the “bad” substrate?

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2