TLS Online TPP Program

#Question id: 23101


Choose the incorrect statement 

#Unit 2. Cellular Organization
  1. The nucleosome is 200 bp of DNA, organized by an octamer of small, basic histone proteins into a beadlike structure. 
  2. The nucleosome is of 20nm/200A diameter, compacting the DNA about 13-fold over the length of naked DNA. Its first level of organization
  3. The second level of organization is the coiling of the 10-nm fiber of nucleosomes into a helical array to constitute the fiber of diameter 30 nm.
  4. 30 nm compacts the DNA 40-fold. This structure of this fiber requires the histone tails and is stabilized by linker histones
More Questions
TLS Online TPP Program

#Question id: 10172

#Unit 6. System Physiology – Plant

leaves continuously adjust the orientation of their laminae such that they remain perpendicular to the sun’s ray and maximize light absorption by

TLS Online TPP Program

#Question id: 10173

#Unit 6. System Physiology – Plant

 Some solar-tracking plants can also move their leaves so that they avoid full exposure to sunlight, thus minimizing heating and water loss. These sun-avoiding leaves are called

TLS Online TPP Program

#Question id: 10174

#Unit 6. System Physiology – Plant

A developmental process in which leaves express a set of biochemical and morphological adjustments that are suited to the particular environment in which the leaves are exposed known as

TLS Online TPP Program

#Question id: 10175

#Unit 6. System Physiology – Plant

if you take a plant that developed indoors and transfer it outdoors; after some time, if it is the right type of plant what will happened?

TLS Online TPP Program

#Question id: 10176

#Unit 6. System Physiology – Plant

Leaves acclimate to sun and shade environments, Sun and shade leaves have contrasting biochemical and morphological characteristics such as

a.) Shade leaves increase light capture by having more total chlorophyll per reaction center, a higher ratio of chlorophyll b to chlorophyll a, and usually thinner laminae than sun leaves

b.) Sun leaves decrease CO2 assimilation by having less rubisco and can dissipate excess light energy and Morphologically they have thinner leaves and a larger palisade layer than shade leaves

c.) Shade leaves decrease light capture by having low total chlorophyll per reaction center, a higher ratio of chlorophyll b to chlorophyll a, and usually thicker laminae than sun leaves

d.) Sun leaves increase CO2 assimilation by having more rubisco and can dissipate excess light energy and Morphologically they have thicker leaves and a larger palisade layer than shade leaves

Which of the following combination from the above statements are TRUE?

TLS Online TPP Program

#Question id: 10177

#Unit 6. System Physiology – Plant

Shady habitats proportionally more abundant far-red light, which is absorbed primarily by photosystem I (PSI) at P700nm, for better balance the flow of energy through PSII and PSI so, what will be the changes appear to enhance light absorption and energy transfer in shady environments?

a.) some shade plants is to produce a higher ratio of PSII to PSI reaction centers, compared with that found in sun plants

b.) photosystem I (PSI) for enhancing light absorption and energy transfer in shady plants increases their reduction potential

c.) some shade plants add more antenna chlorophyll to PSII to increase absorption by this photosystem

d.) photosystem I (PSI) for enhancing light absorption and energy transfer in shady plants decreases their reduction potential

Which of the following above combination is TRUE?