Navigation Menu
Home
University Admissions
Public Sector
Private Sector
Admissions in Punjab
Admissions in KPK
Admissions in Sindh
Admissions in Balochistan
Admissions in AJK
Global Scholarships
Scholarships in USA
Scholarships in UK
Scholarships in Canada
Scholarships in Australia
Scholarships in Europe
Scholarships in Asia
Scholarships in Africa
Medical Colleges
Public Sector
Private Sector
Semi-Govt (NUMS)
Online Quiz
MDCAT Past Papers
MDCAT Practice Test
AFNS Intelligence Test
ISSB Intelligence Test
Blog
Latest Notices
Menu
Pak
Admissions
Home
All Open Admissions
Public Sector
Private Sector
Admissions in Punjab
Admissions in KPK
Admissions in Sindh
Admissions in Balochistan
Admissions in AJK
Scholarships
Scholarships in USA
Scholarships in UK
Scholarships in Canada
Scholarships in Australia
Scholarships in Europe
Scholarships in Asia
Scholarships in Africa
Medical and Dental Colleges
Public Sector
Private Sector
Semi-Govt (NUMS)
Online Quiz
MDCAT Past Papers
MDCAT Practice Test
AFNS Intelligence Test
ISSB Intelligence Test
Blog
Latest Notices
Home
/
Online Quiz
/
MDCAT Past Papers
/
UHS
/
Biology
/
Quiz 6
Mdcat-past-papers - UHS - Biology Quiz
Filters:
Board: UHS | Subject: Biology |
101. Except during nuclear division, the nucleus has the chromosome in a loosely coiled state known as:
Gene
Ribosomes
DNA
Chromatin
102. An enzyme and substrate reacts through a special feature or site present on:
Building site
Active site
Catalyst site
Inhibitory site
103. Enzymes are derived from:
Proteins
Nucleic acids
Carbohydrates
Vitamins
104. Which molecular structure of enzyme is essential for the activity of enzyme:
Primary
Secondary
Quaternary
Tertiary
105. All enzymes requires Mg to catalyse the reaction. Mg is called:
Co-Enzyme
Activator
Co-Factor
Allosteric site
106. Enzymes lower the activation energy by stabilizing the transition state of a metabolic reaction due to:
Changing conditions within the active site
Changing conditions within the protein framework
Rearranging the fatty acids in active site
Distorting the molecules in allosteric site
107. NAD is an important:
Enzyme
Hormones
Co-enzyme
Vitamins
108. The active site of enzymes are composed of:
few nucleotides
few saccharides
few nucleosides
few amino acids
109. The major enzymes involved in transfer of phosphate group from ATP to Glucose is:
Isomerase
Kinase
Dehydrogenase
Decarboxylase
110. Induced fit model of enzyme activity suggests that an enzyme:
Cannot modify its active sites
Can bind to a single substrate
Can catalyse related reaction
Usually belongs to non-regulatory enzyme
111. Enzymes work by lowering the ___ of the reactions they catalyze.
Kinetic energy
Activation energy
Heat energy
Potential energy
112. Enzymes work by lowering the ___ of the reactions they catalyze
Kinetic energy
Activation energy
Heat energy
Potential energy
113. Many enzymes are secreted in inactive form to protect:
Mitochondria
Cell DNA
Cell membrane
Vacuole
114. What happens to the enzyme after an enzyme catalyzed reaction
Reduced to inactive form
Changes into substrate
become inert
used for another reaction
115. Non protein but inorganic detachable co-factor is called:
Activator
Prosthetic group
Co-enzyme
Apo-enzyme
116. Which enzyme works in alkaline pH?
Pepsin
Sucrose
enterokinase
Pancreatic lipase
117. Enzyme catalase protects the plants cell from:
Dehydration
Photorespiration
Toxic effect of alcohol
Protein loss metabolism
118. Pepsin, protein digesting enzyme sets best pH:
3
4.5
2
6
119. Which property of enzyme is helpful to carry out metabolic activities at room temperature?
Not sensitivity to pH
Does not change the speed of reaction
Highly specific
Required in large quantities
120. Optimum pH for pancreatic lipase is:
2
4
6
8
Submit Quiz
-
Try Now
MDCAT Past Papers Free Online Quizzes
Rs. 1,799
Buy Now
Watch Touch Screen With Bluetooth
Country Wise Scholarships
🇵🇰
Pakistan's Scholarships
🇺🇸
USA's Scholarships
🇬🇧
UK's Scholarships
🇨🇦
Canada's Scholarships
🇨🇳
China's Scholarships
🇸🇦
Saudi Arabia's Scholarships
🇦🇪
UAE's Scholarships
🇲🇾
Malaysia's Scholarships
🇪🇺
Europe's Scholarships
🇰🇷
South Korea's Scholarships
See More
Rs. 5,994
Buy Now
Zero® ICON Smartwatch
Online Free Quiz
MDCAT Past Papers
MDCAT Practice Test
AFNS Intelligence Test
ISSB Intelligence Test
View All Quizzes →
Follow Us
Facebook
YouTube
WhatsApp
Instagram
Stay updated with latest news & updates
Aggregate Calculator
Calculate your MDCAT aggregate for MBBS admissions
Calculate Now →