Cell Biology

Which of the following is found in both archaeal and eukaryotic genomes?

Which of the following is found in both archaeal and eukaryotic genomes?

Which of the following is found in both archaeal and eukaryotic genomes?
 
  A) chromatin fibers
  B) histones
  C) heterochromatin
  D) euchromatin
  E) nuclear envelope


Which of the following are exampl

aschramm   66   2 Replies

aschramm

Two bacterial strains have the same genes for metabolizing a carbohydrate, but one is wild-type for ...

Two bacterial strains have the same genes for metabolizing a carbohydrate, but one is wild-type for ...

Two bacterial strains have the same genes for metabolizing a carbohydrate, but one is wild-type for a regulatory inducer while the genetic variant does not produce the inducer. Which of the following statements is CORRECT with regard to the metabolic

Sqwill23   50   2 Replies

Sqwill23

Two molecules react to produce two products, one of which is water. What type of reaction is likely ...

Two molecules react to produce two products, one of which is water. What type of reaction is likely ...

Two molecules react to produce two products, one of which is water. What type of reaction is likely to be involved?
 
  A) a decomposition reaction
  B) a hydrolysis reaction
  C) an exchange reaction
  D) a synthesis reacti

CB96   90   2 Replies

CB96

Which of the following mechanisms normally repairs pyrimidine dimers?

Which of the following mechanisms normally repairs pyrimidine dimers?

Which of the following mechanisms normally repairs pyrimidine dimers?
 
  A) base-excision repair
  B) light repair
  C) single-strand repair
  D) error-prone repair
  E) SOS response repair


The smallest

Darkflower73   58   2 Replies

Darkflower73

Which of the following is true of a nanometer?

Which of the following is true of a nanometer?

Which of the following is true of a nanometer?
 
  A) A nanometer is about the size of a common bacterial cell.
  B) A nanometer is one millionth of a meter.
  C) A nanometer is equivalent to 10 Angstroms ().
  D) The nanome

Hems271   52   2 Replies

Hems271

How does brightfield microscopy allow images to be visualized?

How does brightfield microscopy allow images to be visualized?

How does brightfield microscopy allow images to be visualized?
 
  A) Specimens are illuminated with white light.
  B) Electrons strike the specimen being examined.
  C) Specimens are fixed and have bright fluorescent molecules a

lturne   51   2 Replies

lturne

A scientist is examining motile protist. He wishes to determine their direction of movement. Which ...

A scientist is examining motile protist. He wishes to determine their direction of movement. Which ...

A scientist is examining motile protist. He wishes to determine their direction of movement. Which of the following microscopic techniques is least likely to be used to view these cells?
 
  A) light microscopy
  B) electron microscop

Erebloth   49   2 Replies

Erebloth

The classic work of Friedrich Whler (1828) that united the fields of biology and chemistry was based ...

The classic work of Friedrich Whler (1828) that united the fields of biology and chemistry was based ...

The classic work of Friedrich Whler (1828) that united the fields of biology and chemistry was based on the
 
  A) discovery of yeast ferments.
  B) production of urea in the laboratory.
  C) discovery of ATP.
  D) identific

edwii   52   2 Replies

edwii

The scientific work that established DNA, rather than protein, as the molecule of heredity was ...

The scientific work that established DNA, rather than protein, as the molecule of heredity was ...

The scientific work that established DNA, rather than protein, as the molecule of heredity was performed prior to
 
  A) Mendel's work on heredity.
  B) the elucidation of the double helix structure of DNA.
  C) Antonie van Leeuw

souljahwitch   21   2 Replies

souljahwitch

Once a scientific theory becomes a law, it :

Once a scientific theory becomes a law, it :

Once a scientific theory becomes a law, it
 
  A) cannot be changed.
  B) cannot be challenged.
  C) becomes static.
  D) is subject to modification.
  E) is irrefutable.

alyssaa1017   36   2 Replies

alyssaa1017

Match the type of microscopy with the appropriate characteristic.

Match the type of microscopy with the appropriate characteristic.

Match the type of microscopy with the appropriate characteristic.
 
  A) amplifies variations in density
  B) light passes directly through specimen
  C) detects electrons deflected from the surface of the specimen
  D) show

shongedz-matang   47   2 Replies

shongedz-matang

A rancher noticed that several grazing animals had become sick after grazing in a new area. The ...

A rancher noticed that several grazing animals had become sick after grazing in a new area. The ...

A rancher noticed that several grazing animals had become sick after grazing in a new area. The rancher asked a team of scientists to analyze this problem.
 
  They visited the area and found that the food available to the animals was simi

sharkgirl   106   2 Replies

sharkgirl

You have been given a sample of Mimivirus, which has the largest capsid diameter of all currently ...

You have been given a sample of Mimivirus, which has the largest capsid diameter of all currently ...

You have been given a sample of Mimivirus, which has the largest capsid diameter of all currently known viruses (600 nm) and has the form of a 20-sided polyhedron (an icosahedron).
 
  Based on your knowledge of microscopes, what would you

desert1959   37   2 Replies

desert1959

Which of the following is a unit of energy?

Which of the following is a unit of energy?

Which of the following is a unit of energy?
 
  A) calorie
  B) bond
  C) watt
  D) mole
  E) both A and B

random1234   52   2 Replies

random1234

Which of the following is false regarding water's specific heat?

Which of the following is false regarding water's specific heat?

Which of the following is false regarding water's specific heat?
 
  A) The specific heat of water is 1.0 calorie per gram.
  B) Heat applied to water must initially break a number of hydrogen bonds.
  C) Water's high specific he

katiebug55   58   2 Replies

katiebug55

While synthesizing a new blue pigment, a chemist notices that the new compound accumulates between ...

While synthesizing a new blue pigment, a chemist notices that the new compound accumulates between ...

While synthesizing a new blue pigment, a chemist notices that the new compound accumulates between an aqueous (water) environment and a hydrophobic environment.
 
  When added to a mixture of oil and water, the pigment creates a blue ring

Briteangelsteph   108   2 Replies

J.j. Jenkins

Which of the following statements about the polymerization of macromolecules is false?

Which of the following statements about the polymerization of macromolecules is false?

Which of the following statements about the polymerization of macromolecules is false?
 
  A) Often the energy needed for polymerization is supplied by ATP.
  B) The polymer chain usually has two different ends.
  C) Water is add

lturne   59   2 Replies

lturne

An enzyme synthesized in the laboratory is found to have little activity when compared to the enzyme ...

An enzyme synthesized in the laboratory is found to have little activity when compared to the enzyme ...

An enzyme synthesized in the laboratory is found to have little activity when compared to the enzyme extracted from cell culture. Both enzymes were examined and have identical amino acid composition.
 
  What is the best explanation for th

Katty2   74   2 Replies

Katty2

All of the following are common functional groups found in biological molecules except :

All of the following are common functional groups found in biological molecules except :

All of the following are common functional groups found in biological molecules except
 
  A) phosphate groups.
  B) carbonyl groups.
  C) amino groups.
  D) sulfhydryl groups.
  E) butyl groups.

swaggymeggy   72   2 Replies

swaggymeggy

Match the interaction or bond on the left with the phrase that best describes it on the right.

Match the interaction or bond on the left with the phrase that best describes it on the right.

Match the interaction or bond on the left with the phrase that best describes it on the right.
 
  A) electrostatic interactions
  B) transient interactions at very close range
  C) sharing of electrons
  D) association of n

Katty2   153   2 Replies

Gabrielle Dobard

Water has many unique properties. Can you identify the property of water that is responsible for ...

Water has many unique properties. Can you identify the property of water that is responsible for ...

Water has many unique properties. Can you identify the property of water that is responsible for each of the following observations?
 
  A) Water has a high specific heat.
  B) Water is polar.
  C) Water has a temperature-stabili

random1234   76   2 Replies

random1234

You are researching a cytoplasmic protein associated with a nerve disorder. The native form of the ...

You are researching a cytoplasmic protein associated with a nerve disorder. The native form of the ...

You are researching a cytoplasmic protein associated with a nerve disorder. The native form of the enzyme appears to be globular protein; however, when a sample of the purified protein is treated with a chemical that reduces disulfide bonds,
 

BallsDeep   51   2 Replies

BallsDeep

Hydrogen bonding is most important in stabilizing the ________ structure of many proteins.

Hydrogen bonding is most important in stabilizing the ________ structure of many proteins.

Hydrogen bonding is most important in stabilizing the ________ structure of many proteins.
 
  A) primary
  B) secondary
  C) tertiary
  D) quaternary
  E) primary, secondary, tertiary, and quaternary

kjm   54   2 Replies

kjm

Cellulose belongs to which of the following groups of macromolecules?

Cellulose belongs to which of the following groups of macromolecules?

Cellulose belongs to which of the following groups of macromolecules?
 
  A) lipids
  B) carbohydrates
  C) proteins
  D) nucleic acids
  E) none of these

fionasyifa17   48   2 Replies

fionasyifa17

Triglycerides are composed of three fatty acids attached to a molecule of ________. (Fill in the blank)

Triglycerides are composed of three fatty acids attached to a molecule of ________. (Fill in the blank)

Triglycerides are composed of three fatty acids attached to a molecule of ________.
 
  Fill in the blank with correct word.

itzresonance   40   2 Replies

itzresonance

Which of the following is true of purines?

Which of the following is true of purines?

Which of the following is true of purines?
 
  A) Cytosine is a purine.
  B) Adenine's bonding to thymine is stronger than is guanine's to cytosine.
  C) Purines have a double-ringed structure.
  D) Both adenine and thymine

ayvidp   54   2 Replies

ayvidp

________ is the major storage polysaccharide for animals, while ________ is the major storage ...

________ is the major storage polysaccharide for animals, while ________ is the major storage ...

________ is the major storage polysaccharide for animals, while ________ is the major storage polysaccharide for plants.
 
  Fill in the blank with correct word.

fionasyifa17   57   2 Replies

fionasyifa17

The ________ projection illustrates saccharides as linear, whereas the ________ projection suggests ...

The ________ projection illustrates saccharides as linear, whereas the ________ projection suggests ...

The ________ projection illustrates saccharides as linear, whereas the ________ projection suggests the spatial relationships of saccharides.
 
  Fill in the blank with correct word.

hairdresserofhw   30   2 Replies

hairdresserofhw

5'-ATAGGGCTT-3' is a short sequence of a strand of DNA. What will be the complementary sequence of ...

5'-ATAGGGCTT-3' is a short sequence of a strand of DNA. What will be the complementary sequence of ...

5'-ATAGGGCTT-3' is a short sequence of a strand of DNA. What will be the complementary sequence of the other strand? What will be the complementary mRNA sequence derived from the second strand of DNA? Be sure to indicate the 5' or 3' ends of each seq

edwii   115   2 Replies

edwii

The size range of most plant and animal cells is :

The size range of most plant and animal cells is :

The size range of most plant and animal cells is
 
  A) 110 nm.
  B) 15 m.
  C) 1050 m.
  D) 0.10.5 mm.
  E) 50100 mm.

Hewwo   46   2 Replies

Hewwo

Which of the following would be attributed to a peroxisomal dysfunction?

Which of the following would be attributed to a peroxisomal dysfunction?

Which of the following would be attributed to a peroxisomal dysfunction?
 
  A) accumulation of N-acetylglucosamine phosphotransferase
  B) accumulation of ganglioside GM2
  C) accumulation of very long chain fatty acids
  D

lturne   35   2 Replies

lturne

Ribosomal subunits are referred to by number and letter combinations (e.g., 70S). The S refers to ...

Ribosomal subunits are referred to by number and letter combinations (e.g., 70S). The S refers to ...

Ribosomal subunits are referred to by number and letter combinations (e.g., 70S). The S refers to ________.
 
  Fill in the blank with correct word.

kjm   28   2 Replies

kjm

The region within the prokaryotic cell where the DNA is located is known as the ________. (Fill in the blank)

The region within the prokaryotic cell where the DNA is located is known as the ________. (Fill in the blank)

The region within the prokaryotic cell where the DNA is located is known as the ________.
 
  Fill in the blank with correct word.

Erebloth   21   2 Replies

Erebloth

Which of the following organelles has only a single membrane around it?

Which of the following organelles has only a single membrane around it?

Which of the following organelles has only a single membrane around it?
 
  A) ribosome
  B) nucleus
  C) mitochondrion
  D) chloroplast
  E) peroxisome

Kenzie_colton1   37   2 Replies

Kenzie_colton1

Lignin is an important component in :

Lignin is an important component in :

Lignin is an important component in
 
  A) tight junctions.
  B) plant cell walls.
  C) fungal cell walls.
  D) plasmodesmata.
  E) bacterial cell walls.

heidirochelle98   51   2 Replies

heidirochelle98

Viruses are important in the study of cell biology because :

Viruses are important in the study of cell biology because :

Viruses are important in the study of cell biology because
 
  A) they cause disease.
  B) they are the simplest form of cellular life.
  C) they are used as model organisms to study molecular biology and genetics.
  D) they

efi   52   2 Replies

efi

Match the organelle to its function.

Match the organelle to its function.

Match the organelle to its function.
 
  A) protein synthesis
  B) support and regulation of cell properties
  C) boundary of the cell
  D) contains pigments in flowers
  E) detoxification of hydrogen peroxide
  F)

hairdresserofhw   94   2 Replies

princess1218

________ are infectious proteins that are responsible for several animal diseases, including scrapie ...

________ are infectious proteins that are responsible for several animal diseases, including scrapie ...

________ are infectious proteins that are responsible for several animal diseases, including scrapie and mad cow disease.
 
  Fill in the blank with correct word.

swaggymeggy   43   2 Replies

swaggymeggy

A microbiologist has discovered what she thinks are two new types of photosynthetic cells. The ...

A microbiologist has discovered what she thinks are two new types of photosynthetic cells. The ...

A microbiologist has discovered what she thinks are two new types of photosynthetic cells.
 
  The first cell (organism 1) appears nearly cubic and is approximately 1.5 m wide  1.5 m long  1.5 m deep. The second, larger cell (organism 2) i

Lilsuzy2007   43   2 Replies

Lilsuzy2007

In your own words and with your own examples, explain fully how cells are limited in size and how ...

In your own words and with your own examples, explain fully how cells are limited in size and how ...

In your own words and with your own examples, explain fully how cells are limited in size and how some cells have modifications that allow them to be larger or more adapted to a particular function in spite of these limitations.
 
  What w

heidirochelle98   60   2 Replies

heidirochelle98