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[Meer zien]Which energy-producing process is thought to have come first during cellular evolution? - ️️Glycolysis 
 
The initial importance of a membrane enclosing self-replicating RNA molecules and associated proteins was that it - ️️maintained these molecules as a unit capable of reproduction and evo...
Voorbeeld 3 van de 25 pagina's
In winkelwagenWhich energy-producing process is thought to have come first during cellular evolution? - ️️Glycolysis 
 
The initial importance of a membrane enclosing self-replicating RNA molecules and associated proteins was that it - ️️maintained these molecules as a unit capable of reproduction and evo...
The eukaryotic cell cycle is composed of four phases in the following order: 
a. G1; S; G2; M 
b. G1; G2; S; M 
c. G1; M; G2; S 
d. S; G1; G2; M - ️️A 
 
The length of time it takes for the cells labeled during DNA synthesis to begin to enter mitosis is a good estimate of the length of the _____...
Voorbeeld 4 van de 41 pagina's
In winkelwagenThe eukaryotic cell cycle is composed of four phases in the following order: 
a. G1; S; G2; M 
b. G1; G2; S; M 
c. G1; M; G2; S 
d. S; G1; G2; M - ️️A 
 
The length of time it takes for the cells labeled during DNA synthesis to begin to enter mitosis is a good estimate of the length of the _____...
Which of the following regulates genes by binding directly to transcription proteins? 
a. Growth hormone 
b. insulin 
c. steroid hormones 
d. epinephrine - ️️c. steroid hormones 
 
Monomeric G proteins, such as Ras and several elongation factors, are usually in the active state when a molecule o...
Voorbeeld 3 van de 30 pagina's
In winkelwagenWhich of the following regulates genes by binding directly to transcription proteins? 
a. Growth hormone 
b. insulin 
c. steroid hormones 
d. epinephrine - ️️c. steroid hormones 
 
Monomeric G proteins, such as Ras and several elongation factors, are usually in the active state when a molecule o...
What is the primary reason that mammalian red blood cells are used in the study of the plasma membrane? 
 
a. There are a lot of them and they are easily obtained. 
b. They contain larger plasma membranes than any other cell type. 
c. They are of particular interest because they are made up of a lip...
Voorbeeld 4 van de 55 pagina's
In winkelwagenWhat is the primary reason that mammalian red blood cells are used in the study of the plasma membrane? 
 
a. There are a lot of them and they are easily obtained. 
b. They contain larger plasma membranes than any other cell type. 
c. They are of particular interest because they are made up of a lip...
Aminoacyl-tRNA syntheses are enzymes that.... - ️️attach amino acids to specific transfer RNAs 
 
Which of the following statements about introns is true? - ️️Some types of organisms generally do not have introns 
 
The primary function of factor EF-G is to... - ️️move the peptide-tRNA f...
Voorbeeld 2 van de 9 pagina's
In winkelwagenAminoacyl-tRNA syntheses are enzymes that.... - ️️attach amino acids to specific transfer RNAs 
 
Which of the following statements about introns is true? - ️️Some types of organisms generally do not have introns 
 
The primary function of factor EF-G is to... - ️️move the peptide-tRNA f...
The Bcl-2 family of proteins is divided into three functional groups that contain and share as many as four Bcl-2 homology domains (BH domains). Which of the following is common to all members of the Bcl-2 family? 
 a. BH1	 
 b. BH2 
 c. BH3 
 d. BH4 - ️️BH3 
 
which of the following stem cells ...
Voorbeeld 2 van de 8 pagina's
In winkelwagenThe Bcl-2 family of proteins is divided into three functional groups that contain and share as many as four Bcl-2 homology domains (BH domains). Which of the following is common to all members of the Bcl-2 family? 
 a. BH1	 
 b. BH2 
 c. BH3 
 d. BH4 - ️️BH3 
 
which of the following stem cells ...
The plasma membrane barrier to passive diffusion is primarily a function of the membrane's 
a. phospholipids 
b. cholesterol 
c. proteins 
d. glycoprotein - ️️a 
 
mammalian erythrocytes (red blood cells) are particularly useful for studies of the plasma membrane because.. 
a. they have few per...
Voorbeeld 3 van de 18 pagina's
In winkelwagenThe plasma membrane barrier to passive diffusion is primarily a function of the membrane's 
a. phospholipids 
b. cholesterol 
c. proteins 
d. glycoprotein - ️️a 
 
mammalian erythrocytes (red blood cells) are particularly useful for studies of the plasma membrane because.. 
a. they have few per...
The simplicity and clarity of Caenorhabditis elegans allowed researchers to - ️️Identify the genes in differentiation of each cell type 
 
The diffraction limited resolving power of a standard light microscope is approximately - ️️0.2 Om 
 
Chloroplasts are thought to have originated from en...
Voorbeeld 3 van de 17 pagina's
In winkelwagenThe simplicity and clarity of Caenorhabditis elegans allowed researchers to - ️️Identify the genes in differentiation of each cell type 
 
The diffraction limited resolving power of a standard light microscope is approximately - ️️0.2 Om 
 
Chloroplasts are thought to have originated from en...
cell wall - ️️-organelle of bacteria and plants 
-rigid layer composed of carbohydrates and proteins 
-porous and easily penetrated 
 
plasma membrane - ️️-organelle of bacteria, plant and animal cells 
-bilayer of phospholipids and associated proteins 
-provides separation from inside of ce...
Voorbeeld 3 van de 21 pagina's
In winkelwagencell wall - ️️-organelle of bacteria and plants 
-rigid layer composed of carbohydrates and proteins 
-porous and easily penetrated 
 
plasma membrane - ️️-organelle of bacteria, plant and animal cells 
-bilayer of phospholipids and associated proteins 
-provides separation from inside of ce...
The light microscope was used to observe the cellular structure of cork by ____, who named the chambers "cells". - ️️Hooke 
 
Which fish is proving to be a useful model organism for the study of vertebrate development? - ️️Zebrafish 
 
Arabidopsis thaliana is a model organism for studying ...
Voorbeeld 2 van de 15 pagina's
In winkelwagenThe light microscope was used to observe the cellular structure of cork by ____, who named the chambers "cells". - ️️Hooke 
 
Which fish is proving to be a useful model organism for the study of vertebrate development? - ️️Zebrafish 
 
Arabidopsis thaliana is a model organism for studying ...
DNA replication is 
a. conservative 
b. semiconservative 
c. bidirectional 
d. liberal 
e. proliferative - ️️B 
 
DNA polymerase can synthesise DNA 
a. de novo by catalysing the polymerisation of free dNTPs 
b. by adding dNTPs to complementary dNTPs on a single stranded DNA 
c. by adding dNTPs t...
Voorbeeld 4 van de 39 pagina's
In winkelwagenDNA replication is 
a. conservative 
b. semiconservative 
c. bidirectional 
d. liberal 
e. proliferative - ️️B 
 
DNA polymerase can synthesise DNA 
a. de novo by catalysing the polymerisation of free dNTPs 
b. by adding dNTPs to complementary dNTPs on a single stranded DNA 
c. by adding dNTPs t...
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