Cell bio
Many of protein subtract of this enzymes themself- most often other kineses and phosphateas but the substract also include ion channels transcription factors and various type of regulatory ?
Ligand
Lysosome
Helicase
Protein
Glucagon and epinephrine
Inhebits gluconeogenisis and stimulate glycolysis
Stimulates gluconeogenisis and glycolis
Stimulates gluconeogenisis and inhebits glycolysis
Inhibits gluconeogenisis and glycolysis
Each orgin of replication is prepared for replication by the formation of a re replication complex during _____
G0
G1
G2
Non disjunction
Such signels are used in gated transport into the ____
Peroxisomes
Mitochonria
Nucleus
Lysosomes
Which compartment contain non genes and depend enterlay on nuclear genes to encode their protein
Lysosomes
Mitochondria
Peroxizomes
Helicase
Which process involves the transport of solutes or fluids
Pinocytosis
Phosporilation
Phagocytosis
Modification
Which of the following regulates glycolysis step
Phosphofructokinase
Hexokinase
Pyruvatekinase
All of this
Without ____eukaryotes would have to rely on the relatively inefficient process of glycolysis for all of their atp production
Helicase
Mitochondria
Lysosome
Peroxisome
Proteins interact with one another, or with components of a cellular membrane, by means of specific types of interaction domains, such as the domain.
SHS
Vesicles
SH3
Co factor
Pyruvate is initially converted to which of the following in the gluconeogenesis
Glycerol
Phosphoneol pyruvate
Oxaloacetate
Acetyl COA
Which one is abundant intermediate filament in nerve axon and dendrites are an exception to the rule that phosphorylation destabilizes intermediate filiaments ?
Vimentin
Neurofilement
Keratin
Nestine
After synapsis, is complete meiotic crossing over takes place during ______ after which the synaptonemal complex breaks down
Diplotene
Leptotene
Pachytene
Zygotene
What is the function of phosphorylase
Transfer inorganic phosphate
Transfer a carboxylate group
Use H202 as the electron acceptor
Transfer amino group
Which one form naturally during the process of secretion(exocytosis)uptake(endocytosis)and transport of materials within the plasma membrane
Vesicles
Mitochondria
Peroxisomes
ER(endoplasmic recticulum
When glucose is converted to pyruvate by glycolysis in the cytosol, the net result is that only -molecules of ATP are produced per glucose molecule, which is less than 10% of the total free energy potentially available from oxidizing the sugar
2
5
1
3
How many molecules of acetyl COA are produced in oxidation of palmitic acid(c16) Which involve 7 round of oxidation
6
7
8
9
Phosphofructokinase the major flux-controlling enzyme of glycolysis is allosterically inhibited activated respectively by
ATP and PEP
AMP and PI
ATP and ADP
Citrate and ADP
Which of the following is not a mechanism for altering reflex of metabolites through the rate determining step of a pathway
Allosteric control of enzyme activity
Diffusional coupling btw adjacent active site
Genetic control of enzyme concentration
Covalent modification of enzyme
Fructose 2,6 biphosphate
Activate fructose 1,6 biophosphate
Activates phosphofructokinase
Inhibits fructose 1,6 biphosphate
Both b and c
The glycolytic pathway (glucose---2 pyruvate) is found
Primarily in animals excluding particles
Only in eukaryotes
Only in yeast
DNA ---- is the process by which a double stranded DNA molecule is copied to produce two identical DNA molecules
Translocation
Nondisjunction
Modification
Replication
Gluconeogenesis is the
Formation of glycogen
Breakdown of glucose to pyruvate
Breakdown of glycogen to glucose
Synthesis of glucose from non -carbohydrate precursors
Proteins and lipids taken in by endocytosis are degraded in
Lysosomes
Nucleus
Peroxisomes
Mitochondria
In pinocytosis fluid and solutes are ingested via small pinocytic
Cofactor
Nucleoid
Vesicle
Ligand
Abnormalities of chromosome number or structure which are usually clinically significant can arise either in somatic cells or in cells of the germline by ----- in cell division
Translocation
Modifications
Homeoststics
Nondisjunction
Which of the following could act as an uncoupler of electron transport and ATP synthesis
The Fo base piece of ATP synthase (without the FI subunit)
Dinitrophenol
Neither (a) nor (b)
Both (a) and (b)
In protein ---- transmembrane protein translocator directly transport specific proteins across a membrane from the cytosol into a space that is topologiocally distinct
Translocation
Nondisjunction
Homeostasis
Modification
Which of the following compounds is responsible for coordinated regulation of glucose and glycogen metabolism
NAD+
Fructose 2,6 biosphosphate
Acetyl CoA
Fructose 1,6 bisphosphate
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