Which of the following statements describes holoplankton? A) various kinds of trees and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics
B) the largest types of seaweeds belonging to the brown algae family that grow in shallow ocean waters
C) one of the two main types of zooplankton which are permanent members of the zooplankton family
D) microscopic organisms that drift in ocean and freshwater environments and perform photosynthesis

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !

Por qué crees que los huevos con cáscara se llaman amnióticos?

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.