TLS Online TPP Program

#Question id: 18811


In flow cytometry, what is forward scatter a measure of?

#Unit 13. Methods in Biology
  1. Density
  2. Size
  3. Granularity
  4. Fluorescence intensity
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TLS Online TPP Program

#Question id: 34178

#Unit 3. Fundamental Processes

A. SSBs interact with ssDNA in a sequence-independent manner. 
B. SSBs primarily contact ssDNA through electrostatic interactions with the phosphate backbone and stacking interactions with the DNA bases.
C. SSBs interact with ssDNA in a sequence dependent manner via hydrogen bonds with phosphate backbone
D. SSBs shows sigmoidal behaviour of binding

Choose true and false

TLS Online TPP Program

#Question id: 2543

#Unit 2. Cellular Organization

Which of the following is the most common pathway taken by a newly synthesized protein that will be secreted by a cell?

TLS Online TPP Program

#Question id: 7280

#Unit 5. Developmental Biology

In drosophila, Physical forces drive invagination of the ventral furrow. Following statements regarding to this process:

A. The cellularized blastoderm will begin to activate higher levels of myosin in the cells at the ventral midline and preferentially at their apical surface.

B. Epithelial adhesions paired with differential activation of dynein and tissue geometry create mechanical constraints that affect the orientation of actomyosin meshworks.

C. The A/P oriented arrays of myosin in the cells at the ventral midline generate tension along the anterior-posterior axis.

D. The combination of tissue geometry and tension of these anterior-to-posterior meshworks cause the tissue to fold outward at a right angle to the anterior-posterior axis, creating a long and narrow ventral furrow.

Which of the following statements are incorrect?

TLS Online TPP Program

#Question id: 1106

#Unit 4. Cell Communication and Cell Signaling

Protein kinase is an enzyme that functions in which of the following ways?

TLS Online TPP Program

#Question id: 12075

#Unit 7. System Physiology – Animal

A 48-year-old woman complains of severe polyuria (producing about 0.5 L of urine each hour) and polydipsia (drinking two to three glasses of water every hour). Her urine contains no glucose, and she is placed on overnight water restriction for further evaluation. The next morning, she is weak and confused, her sodium concentration is 160 mEq/L, and her urine osmolarity is 80 mOsm/L. Which of the following is the most likely diagnosis?