Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 38583
TLS Online TPP Program

#Question id: 11010

Which of the following best explains how sympathetic stimulation affects the heart?

#I Life Science/ Life Sciences Group – I-V
  1. Permeability of the S-A node to sodium decreases
  2. Permeability of the A-V node to sodium decreases
  3. Permeability of the S-A node to potassium increases
  4. There is an increased rate of upward drift of the resting membrane potential of the S-A node
More Questions
TLS Online TPP Program

#Question id: 18883

#SCPH01 Biochemistry

Which of the following is defined as the ability to distinguish or separate two adjacent objects or points from one another in a microscopic specimen?
TLS Online TPP Program

#Question id: 5025

#SCPH06 I Botany

Which of these genetic processes may be most helpful in accounting for the Cambrian explosion?
TLS Online TPP Program

#Question id: 569

#SCPH05 I Biotechnology

A small molecule that decreases the activity of an enzyme by binding to a site other than the catalytic site is termed a(n):
TLS Online TPP Program

#Question id: 5329

#SCPH28 | Zoology

A sex-linked recessive allele c produces a red-green colorblindness in humans. A normal woman whose father was colorblind marries a colorblind man. What are the chances that the second child from this marriage will be a colorblind boy?
TLS Online TPP Program

#Question id: 23191

#SCPH06 I Botany

In stimulated emission depletion (STED) microscopy the focused excitation laser point is surrounded by a