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#Question id: 4943


In what way were conditions on the early Earth of more than 3 billion years ago different from those on todayʹs Earth?

#Unit 11. Evolution and Behavior
  1. only early Earth had water vapor in its atmosphere.

  2. Only early Earth was intensely bombarded by large space debris.

  3. Only early Earth had an oxidizing atmosphere.

  4. Less ultraviolet radiation penetrated Earthʹs early atmosphere.

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#Question id: 33284

#Unit 2. Cellular Organization

Assembly of the contractile ring results in part from the local formation of new actin filaments, which depends on:

TLS Online TPP Program

#Question id: 5332

#Unit 8. Inheritance Biology

Which of the following are incorrect regarding Sex chromosome in human?

TLS Online TPP Program

#Question id: 14772

#Unit 13. Methods in Biology

Find the chance of throwing at least one ace in a simple throw with two dice numbered 1 to 6.

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#Question id: 21390

#Unit 12. Applied Biology

Suspension culture used for___

TLS Online TPP Program

#Question id: 11806

#Unit 6. System Physiology – Plant

sap is translocated from areas of supply, called sources, to areas of metabolism or storage, called sinks. Which of the following statements about source and sink are TRUE?

a.) Sinks include any nonphotosynthetic organs of the plant and organs that do not produce enough photosynthetic products to support their own growth or storage needs

b.) Sources include exporting organs that are capable of producing photosynthate in excess of their own needs

c.) During the growing season of the first year, storage root is a sink, when it accumulates sugars received from the source leaves. During the second growing season the same root becomes a source

d.) Roots, tubers, developing fruits, and immature leaves, which must import carbohydrate for normal development, are all examples of sources tissues

Find the correct combination of the source and sink pattern of translocation.