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Terms in this set (53)
The smallest biological unit that can evolve are
Is a carefully formulated, proposition based on observations and supported by an accumulation of experimental data
The use Of deductive reasoning
Which of the following is not a condition of the cell theory
All cells must have a nucleus
What Bond gives water it's unique characteristics?
How many neutrons does Carbon-13 have?
How much NaCl would you need to make 0.100 liter of a 0.5 molar solution? NaCl has a molecular weight of 58.44 g
The pH of an item is 13.8 is this acidic or basic and how many H+ ions does it have?
Which series of elements below are ordered from high to low electronegative
F,Cl, As, Ba, Ne
What type of covalent bonds exist in methane?
Which is the best explanation for why noble gases like He,Ne, and At are relatively inert?
Their valence electrons shells are filled
A carbon 13 Adam has six proteins and seven neutrons. How many valence electrons does a carbon 13 Atom have?
At which level of protein structure is the overall 3-D shape of a polypeptide?
The construction of macromolecules requires a series of. Reactions that form. Bonds between monomers
Hydrolysis is involved in each of the following except
the conversion of glucose to starch
table salt (NaCl) dissolves in water because the component Atoms can ionize. Glucose, C6H12O6 Dissolves in water because
It has many hydroxyl groups and these polar groups hydrogen bond with water
Proteins are polymers of molecules called
The flexibility and fluidity of membranes that contain a large amount of unsaturated fatty acid acyl chains are due too
The kinks caused by the double bonds prevented close packing
Which of the following interactions is involved informing the primary structure of a protein?
Which of the following is false regarding the different classes of lipids and their features?
Cholesterol is a steroid that should not be present in the cell membranes because it can contribute to atherosclerosis
Which of the following is false regarding the DNA double helix?
The two strands are parallel
What component of amino acid structure varies among different amino acids?
the components of the R-group
As you were taking Let us in the grocery store, you were surprised when water sprinkle suddenly went on, spring fresh water on the product. When you got back home, you immersed the lettuce and a salt solution, and within several minutes then we came limp and soft. What are the explanations for the spraying procedure in the store, and ur observation at home?
Lettuce cells are hypertonic to freshwater making them turgid And fresh looking, but hypotonic to the salt solution, hence plasmolyze
Arrange the following molecules according to increasing rate of diffusion across a lipid bilayer without the aid of any membrane protein: glucose, Ca2+ N2 , H2O
Ca2+ < glucose <H2O < N2
Which of the following is NOT an example of facilitated diffusion?
Movement via an electrogenic pump
On the basis of energy requirements, which does NOT belong to the group?
competitive inhibition differs from non-competitive inhibition by:
The site that the inhibitor binds to the enzyme
Which of the following is true?
An isolated system cannot exchange either matter or energy with its surroundings
free energy decreases and the stability of a system increasing during which types of reactions?
ATP drives endergonic reactions by _____, which is the
Phosphorylation, transferring a phosphate to other molecules
When an enzyme speeds up metabolic reactions
It lowers the activation energy necessary to break the bonds of the reactants.
Vesicle which pinches off does not have a coated pit
Cell continually takes in droplets of extra cellular fluid into vesicles
Taking in cholesterol for membrane synthesis in humans
A chemical reaction that has a negative G is best described as _________ Well one with the positive G is
Which of the following DOES NOT pertain to the first law of thermodynamics?
The energy of the universe is never constant
substrate-level phosphorylation accounts for approximately what percentage of the ATP formed by the reactions of glycolysis
In the generic redox reaction: A+B —-> C+D
One substrate gains electrons while the other substrate loses electrons
What is the substrate for the first step in glycolysis?
In eukaryotic cell, electron transport takes place within:
The inner mitochondrial membrane
During cellular respiration, what happens to the 6 carbons in glucose?
All 6 carbons are completely oxidized to CO2
NAD+ is the ________ form of NADH while NADH is the _______ form of NAD+
Oxidized ; reduced
During respiration, the energy released as electrons are passed through the electron transport chain is
Used to actively pump H+ ions across a membrane to form a proton gradient
At the end of glycolysis, the potential/ chemical energy released form glucose is now stored in
NADH AND ATP
Fermentation relies on which of the stages of cellular respiration
By matching the absorption spectrum of pigments in chloroplasts with the action spectrum of photosynthesis, it is possible to determine
Which pigments are involved in the light reaction
What is chromosomal defect associated with Down syndrome, and what is the resulting number of chromosomes in somatic cells
Three copies of chromosomes 21, 47 chromosomes total
Two pea plants were crossed and 93 of 200 progeny were short and the rest were tall. Tall is dominant. The most likely genotypes of the parents are:
Genes A,B, C, and D are located on the same chromosome. They are separated by the following map units; C-D, 25 map units;A-B, 12 map units;B-D, 20 map units; A-C, 17 map units.
How many units apart are genes A and D? Draw a gene map to reflect the data.
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