#Question id: 11289
#Unit 10. Ecological Principles
Consumption efficiency (CE) is the proportion of production at one trophic level (Prodn n-1) that is eaten by, or ingested, by the next trophic level (In) but Assimilation efficiency (AE) is the proportion of ingested energy assimilated in to blood stream
Which of the following is incorrect statement?
A) In terrestrial herbivore, AE is greater than CE
B) In aquatic herbivore AE is equal to CE
C) CE of grass land herbivore is often greater than forest herbivore
D) AE of herbivore is often greater than carnivore
#Question id: 28842
#Unit 2. Cellular Organization
Microtubules can be stabilized by side-binding microtubule associated proteins (MAPs), many MAPs are positively charged and bind to microtubules through____
#Question id: 22972
#Unit 7. System Physiology – Animal
#Question id: 7185
#Unit 5. Developmental Biology
Following statements are regarding to establishing the three separate cell lineages in the mouse blastocyst.
A. The first two cell types to be specified are the inner cell mass and the trophectoderm. This involves progressive restriction of expression of the genes that code for transcription factors Oct4 and Cdx2.
B. At the eight-cell stage, all the cells express both genes at low levels, but by the late morula/early blastocyst stage, Cdx2 expression has increased in, and eventually becomes restricted to, the cells on the outside of the embryo, and these will form trophectoderm. Oct4
expression becomes restricted to the inner cell mass cells at early blastula stage.
C. Within the inner cell mass, two separate cell types arise: the epiblast cells, from which the embryo will develop; and the primitive endoderm, which will form extra-embryonic structures. This involves a progressive restriction of expression of the genes for the transcription factors Nanog and Gata6.
D. At the early blastula stage, some of the inner cell mass cells apparently at random start to express higher levels of Nanog, whereas the other cells express higher levels of Gata6.
E. By the late blastula, the cells expressing the two different transcription factors have sorted out within the inner cell mass so that cells expressing high levels of Nanog form an outer epithelial layer of primitive endoderm enclosing the epiblast cells expressing high levels of Gata6.
Which of the following statements are correct?
#Question id: 1540
#Unit 4. Cell Communication and Cell Signaling
Peptidoglycans recognize by