Practice Questions

TLS Online TPP Program

#Question id: 7092

A gap gene mutation might cause which of the following defects in the embryonic body plan?

#Unit 5. Developmental Biology

every other segment would be missing, resulting in T1, T3, A2, A4, etc. but no T2, A1, A3, and so on.
segments A2 through A6 would be missing, but the rest of the pattern is essentially normal
patterning within each segment would be abnormal, causing for example denticle belts to form across the entire segment
the identity of one or more segments would be transformed to that of a different segment, such that the T3 leg would transformed to a T2 leg

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TLS Online TPP Program

#Question id: 32586

#Unit 2. Cellular Organization

Which of the following protein are required for positioning the Golgi apparatus near the cell center of animal cells?

TLS Online TPP Program

#Question id: 12385

#Unit 7. System Physiology – Animal

To evaluate kidney function in a 45-year-old woman with type II diabetes, you ask her to collect her urine over 24 hours. She collects 3600 ml of urine in that period. The clinical laboratory returns the following results after analyzing the patient’s urine and plasma samples: plasma creatinine = 4 mg/dL, urine creatinine = 32 mg/dL, plasma potassium = 5 mmol/L, and urine potassium = 10 mmol/L.

What is the net renal tubular reabsorption rate of potassium in this patient?

TLS Online TPP Program

#Question id: 125

#Unit 1. Molecules and their Interaction Relevant to Biology

Regions on cell membranes called lipid rafts form because

TLS Online TPP Program

#Question id: 683

#Unit 1. Molecules and their Interaction Relevant to Biology

Which factor does not help to explain why many proteins exhibit quaternary structure?

TLS Online TPP Program

#Question id: 26974

#Unit 10. Ecological Principles

Trade off is caused by