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TLS Online TPP Program

#Question id: 649

Choose INCORRECT statement from the following

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The rates of enzymatically catalyzed reactions are typically 106 to 1012 times greater than those of the corresponding uncatalyzed reactions

  2. The catalytic activities of many enzymes vary in response to the concentrations of substances other than their substrates.

  3. When the reaction involves two molecules, such as the association reaction P + Là PL, it is called second order, and its rate constant (ka) has units of M-2 s-1

  4. When the reaction involves one molecule, such as the dissociation reaction PL à P + L, the reaction is first order and the rate constant (kd) has units of (s-1).

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TLS Online TPP Program

#Question id: 13022

#Unit 10. Ecological Principles

A certain species of pine tree survives only in scattered locations at elevations above 2,800 m in the western United States. To understand why this tree grows only in these specific places an ecologist should
TLS Online TPP Program

#Question id: 13020

#Unit 10. Ecological Principles

Experts in deer ecology generally agree that population sizes of deer that live in temperate climates are limited by winter snow. The deer congregate in ?yarding? areas under evergreen trees because venturing out to feed in winter is energetically too expensive when snowfall depths accumulate to above 40 cm. Deer often stay yarded until the spring thaw. Snow depth over 40 inches for more than 60 days results in high mortality due to starvation.  This observation best illustrates which of the following principles about factors that limit distribution of organisms?
TLS Online TPP Program

#Question id: 13019

#Unit 10. Ecological Principles

Air masses formed over the Pacific Ocean are moved by prevailing westerlies where they encounter extensive north- south mountain ranges, such as the Sierra Nevada and the Cascades. Which statement best describes the changes that these air masses undergo?
TLS Online TPP Program

#Question id: 13018

#Unit 10. Ecological Principles

Generalized global air circulation and precipitation patterns are caused by
TLS Online TPP Program

#Question id: 13017

#Unit 10. Ecological Principles

Which of the following statements best describes the effect of climate on biome distribution?
TLS Online TPP Program

#Question id: 13016

#Unit 10. Ecological Principles

Which of the following is not true about estuaries?