Ubiquitin activation Study guides, Revision notes & Summaries

The plasma membrane in human cells is comprised of: a. A single layer of phospholipids and proteins b. A capsid made up of lipids and polysaccharides c. A phopholipid bilayer including cholesterol and proteins d. Cellulose 2. Flipases and flopases are enzymes involved in the asymmetry of the cell membrane. Which of these is a function of membrane asymmetry? a. Marking the cell for apoptosis b. Allows for selective permeability of the membrane c. Manufacture of integral proteins d. Invo...

CBT QUESTIONS AND ACCURATE PASSED ANSWERS 2023/2024 Which one of the following statements correctly describes what happens after Wnt ligand binds to Frizzled and LRP? a. RAR-RXR heterodimers are formed and associate with HDAC co-repressor complexes, silencing target genes. b. Axin and APC form a complex with CKI and GSK3β which then modifies β-catenin for degradation. c. Axin is recruited to the phosphorylated co-receptor LRP and this disrupts the APC, CKI, GSK3β complex. d. Patched ...

Cell cycle - ANSWER- the series of stages a cell goes through M Phase - ANSWER- includes the process of mitosis and cytokinesis interphase - ANSWER- the majority of the cell cycle and lasts longer than the M phase; it may extend for days, week, or longer. G1 - ANSWER- takes place between the end of mitosis and the beginning of DNA replication. S phase - ANSWER- DNA replication occurs during this phase of the cell cycle G2 - ANSWER- occurs between the end of S and the beginning of mitosis ...

Cell cycle - ANSWER- the series of stages a cell goes through M Phase - ANSWER- includes the process of mitosis and cytokinesis interphase - ANSWER- the majority of the cell cycle and lasts longer than the M phase; it may extend for days, week, or longer. G1 - ANSWER- takes place between the end of mitosis and the beginning of DNA replication. S phase - ANSWER- DNA replication occurs during this phase of the cell cycle G2 - ANSWER- occurs between the end of S and the beginning of mitosis ...

Metabolism and Endocrinology Contains 131 MCQ and Answer Key 1 Which of the following phosphate compounds is MOST important in the production of energy? a) AMP (adenosine monophosphate) b) ADP (adenosine diphosphate) c) ATP (adenosine triphosphate) d) GTP (guanosine triphosphate) e) CTP (cytidine triphosphate) 2 Which of the following is NOT produced by the citric acid cycle? a) CO + 2 b) H ions + c) NAD d) GTP (guanosine triphosphate) e) NADH 3 The renal threshold for glucose, th...

Biology Chapter 18 Practice Test 44 Questions with Verified Answers In the case of E. coli, the bacterium may need to synthesize tryptophan, or its host, a human, may supply all the tryptophan it needs. Why do both bacteria and humans need tryptophan? A) It is an important enzyme in the glycolysis pathway. B) It is one of the 20 amino acids used by all organisms to synthesize proteins. C) It is an important constituent of cell walls in both humans and bacteria. D) Tryptophan induces the ...

Cellular Adaptation: • Cells adapt to changes in the internal environment when confronted with stress that endanger normal structure and function. These cells adapt to increase work demands by changing in: 1. Size (Atrophy and Hypertrophy) 2. Number (Hyperplasia) 3. Form (Metaplasia) • These mechanisms depend largely on signals transmitted by chemical messengers that exert their affects by altering gene function. In general, the genes are expressed in two categories: 1. Operating...

Chapter 03 Cell Structure and Genetic Control     
True / False Questions
  1.  The cell is the basic structural and functional unit in the body.  
TRUE   
Blooms Level: 1. Remember
Learning Outcome: 03.01
Section: 3.01
Topic: Cells
    
Multiple Choice Questions
  2.  The _____________ is the liquid portion of the cell between the plasma membrane and nucleus.  
A.  cytoskeleton 
B.  peroxisome 
C.  cytosol 
D.  phospholipids   
Blooms ...

NBME Practice MCB Questions 1-200 Questions Answered 100% correct A 2 year old girl who is exposed to the sun has progressive development of dryness of the skin, excessive freckling, and keratoses. Skin fibroblasts cultured from this child are most likely to be defective in which of the following? Nuclear excision repair of pyrimidine dimers a 65 year old man has a radical prostacetomy and lymph node dissection for adenocarcinoma of the prostate. which of the following features is invol...

MMSC 490 Questions FINAL Chp.17 with 100% correct Answers Damaged DNA is sensed by a complex of proteins that activate the protein kinase - Answer ️️ -ATM or ATR Fertilization of a frog egg triggers the resumption of meiosis by an increase in - Answer ️️ - Ca2+ The retinoblastoma protein (Rb) binds to and inhibits - Answer ️️ -Transcription factor E2F MPF is a general regulator of the transistion from - Answer ️️ -G2 to M At fertilization, the sperm binds to a receptor on...