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26 Nov 2019

Question 1

The presence of which of the following is a distinguishablecharacteristic between prokaryotic cells and eukaryotic cells?

a. Translation using ribosomes

b. the ability to metabolize simple sugars

c. The ability to replicate a DNA genome

d. internal membranes making separate compartments for differentfunctions

Question 2

Which of the following statements is FALSE regarding phosphategroups

a. phosphate groups are added to proteins found only on theoutside of cells or inside membrane-bound organelles

b. phosphate groups can be added to the amino acids tyrosine,serine, and threonine to control functions of proteins

c. phosphate groups are hydrophilic

d. phosphate groups can be found in some types of proteins,nucleic acids and lipids

Question 3

The Endosymbiont Theory is supported by which of thefollowing?

a. Endosymbiosis occurs naturally in modern times

b. Mitochondria and chloroplasts have circular genomes seperatefrom the nuclear genomes

c. Mitochondria and chloroplasts have other biochemicalcharacteristics more similar to prokaryotes than eukaryotes

d. all of the above

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Related questions

Question 1

The presence of which of the following is a distinguishablecharacteristic between prokaryotic cells and eukaryotic cells?

a. Translation using ribosomes

b. the ability to metabolize simple sugars

c. The ability to replicate a DNA genome

d. internal membranes making separate compartments for differentfunctions

Question 2

Which of the following statements is FALSE regarding phosphategroups

a. phosphate groups are added to proteins found only on theoutside of cells or inside membrane-bound organelles

b. phosphate groups can be added to the amino acids tyrosine,serine, and threonine to control functions of proteins

c. phosphate groups are hydrophilic

d. phosphate groups can be found in some types of proteins,nucleic acids and lipids

Question 3

The Endosymbiont Theory is supported by which of thefollowing?

a. Endosymbiosis occurs naturally in modern times

b. Mitochondria and chloroplasts have circular genomes seperatefrom the nuclear genomes

c. Mitochondria and chloroplasts have other biochemicalcharacteristics more similar to prokaryotes than eukaryotes

d. all of the above

Question 401 pts

Kinetic energy is the stored energy that can be used for motion.

True
False

Flag this Question

Question 411 pts

When an electron is transferred from one atom to another, and the two atoms are then electrically attracted to one another, a(n) ________________ bond is formed.

ionic
kinetic
covalent
hydrogen

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Question 421 pts

Changing the number of ____________ of an atom would change the chemical properties of the atom.

neutrons
protons
electrons
electron shells

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Question 431 pts

Forming molecules and breaking down molecules in biological organisms usually requires the use of _________ to help the reaction proceed faster.

oil
heat
enzymes
blood

Flag this Question

Question 441 pts

Organic molecules have a core composed of .

carbon
nitrogen
phosphorus
hydrogen

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Question 451 pts

The building blocks of carbohydrates are

polypeptides
amino acids
nucleotides
monosaccharides

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Question 461 pts

Water molecules crossing a membrane from high to low concentration is .

active transport
cell fate
facilitated diffusion
osmosis

Flag this Question

Question 471 pts

Choose the membrane molecule responsible for the passage of polar molecules and ions into and out of the cell.

phospholipids
transmembrane channel proteins
cell surface proteins
carbohydrate chains

Flag this Question

Question 481 pts

The simplest cells are .

prokaryotic
animal cells
eukaryotic
cells of fungi

Flag this Question

Question 491 pts

Which of the following membrane bound organelles are found inside bacterial cells:

nucleus
organelles are not found in prokaryotic cells
mitochondria
chloroplasts

Flag this Question

Question 501 pts

Which of the following is a specialized components of the cell, is associated with the rough endoplasmic reticulum, and is responsible for making proteins.

vacuoles
ribosomes
golgi complex
nucleus

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Question 511 pts

Proteins are sorted, modified, and packaged by the _____________ and later transported to the outside of the cell.

ribosomes
golgi bodies (golgi apparatus)
nucleus
mitochondria

Flag this Question

Question 521 pts

Dehydration synthesis is a process of linking two smaller subunits together to form a polymer. Which of the following statements below is true of dehydration synthesis?

Oxygen is consumed.
A water molecule is removed from the molecules.
A water molecule is added to the molecules
Carbon dioxide is given off.

Flag this Question

Question 531 pts

Proteins are made up of _________ held together by peptide bonds.

monomers
monosaccharides
polymers
amino acids

Flag this Question

Question 541 pts

Which of the following gives an amino acid its properties?

NH2
R Group or functional group
COOH
H

Flag this Question

Question 551 pts

The final three-dimensional shape of a protein that includes the bonding of two or more polypeptide chains is call its _____ structure.

Tertiary
Quaternary
Secondary
Primary

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Question 561 pts

How do DNA and RNA differ?

all statements are differences between DNA and RNA.
DNA is double stranded while RNA is single stranded.
They have different sugars.
Thymine is present in DNA but not in RNA.

Flag this Question

Question 571 pts

Which of the following is a component of a DNA nucleotide?

phosphate
a nitrogen containing base
All are components of a nucleotide.
5-carbon sugar

Flag this Question

Question 581 pts

Cell membranes are made up of several different types of molecules. Select the membrane molecule below that is made up of a polar region and two non-polar fatty acid tails.

transmembrane proteins
carbohydrate chains
phospholipids
cell surface proteins

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Question 591 pts

Two organelles which are believed to have once been free-living bacterial cells are ____________ and ______________.

chloroplasts and mitochondria
golgi apparatus and endoplasmic reticulum
ribosomes and nucleolus
peroxisomes and lysosomes

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Question 601 pts

The is an extensive system of internal membranes responsible for producing carbohydrates and lipids.

smooth endoplasmic reticulum
rough endoplasmic reticulum
nucleolus
mitochondria

Question 1


Which of the following provides the best description of adifference between prokaryotic and eukaryotic cells?.l.14.3>

The cell membrane of prokaryotic cells contains proteins, whilethe cell membrane of eukaryotic cells contains only lipids andcarbohydrates.

The DNA in eukaryotic cells is enclosed in the nucleus, whilethe DNA in prokaryotic cells is not separated from the rest of thecell’s contents.

Eukaryotic cells have cell walls that consist mainly of sugars,while prokaryotic cells do not.

Prokaryotic cells contain chloroplasts and mitochondria, whileeukaryotic cells do not contain specialized organelles.

Question 2

Cellular respiration is a process involving the breakdown ofglucose molecules in order to generate energy for cellularactivities. Given the general reaction below, which of thefollowing best describes the products labeled x andy?

C6H12O6 + O2 → _x___+ __y___ + energy.l.18.8>

The products are CO (carbon monoxide) andH2O2 (hydrogen peroxide), which thendecompose into carbon dioxide (CO2) and water(H2O).

The products are H2O (water) and CO2 (carbondioxide), which then undergo anaerobic respiration.

The products are CO2 (carbon dioxide) andH2O (water), which then become the reactants forphotosynthesis.

The products are O2 (oxygen) and H2O(water), which are then used for growth and to keep the organismhydrated.

Question 3

If a researcher added a quantity of phospholipid molecules to abeaker of water, what would be most likely to happen to theorientation of the phospholipid molecules?.l.14.2>

They would break apart, and the remaining lipid tails wouldfloat up and form a layer on the surface of the water.

Their lipid tails would align within a spherical double layerwith their phosphate heads in the water inside and outside thesphere.

They would form a single-layered sphere with the phosphate headspointing outward and the lipid tails pointing inward.

Their lipid tails would adhere to the glass of the beaker andtheir phosphate heads would float in the water.

Question 4

While looking at a cell under a microscope, a scientist is ableto see a biological molecule. This molecule is a nucleic acid witha ladder structure and contains the nitrogenous bases adenine,thymine, cytosine, and guanine. Based on this information, whatconclusion can the scientist draw regarding this nucleicacid?.l.18.1>

The nucleic acid is RNA and would be found in the cell’snucleus.

The nucleic acid is RNA and would be found in the cytoplasm.

The nucleic acid is DNA and would be found in the cytoplasm.

The nucleic acid is DNA and would be found in the cell’snucleus.

Question 5


Which of the following is needed for cellular respiration tooccur?.l.18.8>

Sodium

Oxygen

Water

Nitrogen

Question 6


What would be the most likely effect if the side chain of an aminoacid group was unable to vary its structure?.l.18.4>

The organism would not be able to make and store starches.

The organism would not be able to process glucose moleculeseffectively.

The organism would not be able to regulate the creation ofspecialized cells.

The organism would not be able to make more than one type ofprotein.

Question 7


During photosynthesis, unused oxygen atoms form oxygen gas(O2) which is released as a waste product. How did theseoxygen atoms originally enter the plant?.l.18.7>

They were part of the ATP molecules gathered by thechloroplasts.

They were part of the sugar molecules(C6H12O6) the plant brought in forfood.

They were part of the carbon dioxide (CO2) moleculesthat entered through the leaves.

They were part of the water molecules (H2O) pulled inthrough the roots.

Question 8


Which of the following organelles houses DNA in eukaryoticcells?.l.14.3>

Endoplasmic reticulum

Golgi apparatus

Nucleus

Mitochondrium

Question 9


M. J. Schleiden shifted the scientific community's attention tocellular processes with his.l.14.1>

attention to disproving spontaneous generation

publication of ideas on cell generation

theories on the division of cells

claim that cells were the basic unit of all plant matter

Question 10


While the average human is able to hold his or her breath forapproximately one minute, a whale can dive for over 30 minuteswithout returning to the surface. Which of the following correctlydescribes this difference?.l.18.10>

Whales need less energy than humans.

Whales gather energy from their environment better thanhumans.

Whales are able to tolerate the products of cellular respirationbetter than humans.

Whales have a slower cellular respiration metabolism rate thanhumans.

Question 11


What can you conclude about the advantage of the cell membranehaving hydrophobic ends in the phospholipid bilayer?.l.18.3>

The cell requires the ability to digest and eliminateenzymes.

The cell requires a barrier between itself and itsenvironment.

The cell requires a means to store starches and glucose.

The cell requires a structure for eliminating waste.

Question 12


What would be the most likely outcome if the ribosomes of a cellwere damaged and stopped functioning?.l.14.3>

The cell would lose structure and shape.

Cell growth and repair would slow or stop.

Cell waste would no longer be processed.

The cell would produce more mitochondria.


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