Question 1

RNA, unlike DNA, is capable of _______ a number of different chemical reactions.

Accepted Answer

The answer of RNA, unlike DNA, is capable of _______...

Question 2

The common source of electrons in the conversion of CO₂ into organic molecules in photosynthesis is _______.

Accepted Answer

The answer of The common source of electrons in the...

Question 3

The two major groups of prokaryotic cells are the _______ and the _______, which diverged early in evolution.

Accepted Answer

The answer of The two major groups of prokaryotic cells...

Question 4

The DNA in a bacterium is located in a region termed the _______.

Accepted Answer

The answer of The DNA in a bacterium is located...

Question 5

The cell lineage that eventually became the plants acquired _______before acquiring _______.

Accepted Answer

The answer of The cell lineage that eventually became the...

Question 6

The amoeba _______ exists as a unicellular organism in abundant nutrient conditions and forms multicellular fruiting bodies in starvation conditions.

Accepted Answer

The answer of The amoeba _______ exists as a unicellular...

Question 7

_______ cells cover the surface of internal organs in the body, such as the intestine.

Accepted Answer

The answer of _______ cells cover the surface of internal...

Question 8

Short generation time is one of the major factors that support using yeast or _______ for many fundamental molecular genetics experiments.

Accepted Answer

The answer of Short generation time is one of the...

Question 9

Model systems serve as simplified examples in which the properties and development of cells can be examined easily. For mammals, a common model system is _______, and _______ is a common model for plants.

Accepted Answer

The answer of Model systems serve as simplified examples in...

Question 10

Model systems such as Caenorhabditis elegans, Drosophila melanogaster, and zebrafish are especially useful for studying problems in cell differentiation and developmental biology because, in contrast to single cells such as E. coli and yeast, they are _______ systems.

Accepted Answer

The answer of Model systems such as Caenorhabditis elegans, Drosophila...

Question 11

_______ cells, the most commonly used cell line, were derived from a biopsy of a tumor carried by Henrietta Lacks.

Accepted Answer

The answer of _______ cells, the most commonly used cell...

Question 12

Viruses have proven to be useful tools with which to explore the properties of cells and complex processes such as cancer because viruses are dependent on _______ processes for much of their replication and metabolism.

Accepted Answer

The answer of Viruses have proven to be useful tools...

Question 13

_______ is a light microscope technique for studying the interaction of proteins.

Accepted Answer

The answer of _______ is a light microscope technique for...

Question 14

In the _______ microscope, imaging is restricted to a single focal plane by the use of an aperture pinhole to reject out of focus light; whereas in the _______ microscope, the same outcome is achieved through the use of light wavelengths such that excitation of the fluorescent dye requires the simultaneous absorption of two or more photons.

Accepted Answer

The answer of In the _______ microscope, imaging is restricted...

Question 15

In transmission electron microscopy, objects are imaged by their differences in _______ density.

Accepted Answer

The answer of In transmission electron microscopy, objects are imaged...

Question 16

Similarities in basic metabolic mechanisms indicate that all present-day cells on Earth descended from a single primordial ancestor.

Accepted Answer

This hypothesis is known as the theory of universal common ancestry and is supported by various lines of evidence, including the similarities in basic metabolic mechanisms across all living organisms.

Question 17

Most of the genes of the bacterial symbionts that evolved into mitochondria are now found in the nucleus.

Accepted Answer

The majority of genes that were once present in the bacterial symbionts that became mitochondria have been transferred to the nucleus of the host cell over time. This is known as endosymbiotic gene transfer.

Question 18

Eukaryotes contain a mixture of genes from eubacteria and archaebacteria.

Accepted Answer

Eukaryotes have a complex evolutionary history that includes genes derived from both eubacteria (through endosymbiotic events, such as the origin of mitochondria and chloroplasts) and archaebacteria, reflecting their ancestry and the various horizontal gene transfer events that have occurred during evolution.

Question 19

Photosynthesis first evolved in the green algae.

Accepted Answer

Photosynthesis first evolved in cyanobacteria, which predate the appearance of green algae.

Question 20

Compared to humans, E. coli has about a thousand times less DNA.

Accepted Answer

E. coli, a bacterium, has a much smaller genome compared to humans. The E. coli genome is about 4.6 million base pairs, while the human genome is about 3 billion base pairs, making the human genome roughly a thousand times larger.

Quiz 1: An Overview of Cells and Cell Research

RNA, unlike DNA, is capable of _______ a number of different chemical reactions.

The common source of electrons in the conversion of CO₂ into organic molecules in photosynthesis is _______.

The two major groups of prokaryotic cells are the _ and the _, which diverged early in evolution.

The DNA in a bacterium is located in a region termed the _______.

The cell lineage that eventually became the plants acquired _before acquiring _.

The amoeba _______ exists as a unicellular organism in abundant nutrient conditions and forms multicellular fruiting bodies in starvation conditions.

_______ cells cover the surface of internal organs in the body, such as the intestine.

Short generation time is one of the major factors that support using yeast or _______ for many fundamental molecular genetics experiments.

Model systems serve as simplified examples in which the properties and development of cells can be examined easily. For mammals, a common model system is _, and _ is a common model for plants.

Model systems such as Caenorhabditis elegans, Drosophila melanogaster, and zebrafish are especially useful for studying problems in cell differentiation and developmental biology because, in contrast to single cells such as E. coli and yeast, they are _______ systems.

_______ cells, the most commonly used cell line, were derived from a biopsy of a tumor carried by Henrietta Lacks.

Viruses have proven to be useful tools with which to explore the properties of cells and complex processes such as cancer because viruses are dependent on _______ processes for much of their replication and metabolism.

_______ is a light microscope technique for studying the interaction of proteins.

In transmission electron microscopy, objects are imaged by their differences in _______ density.

Similarities in basic metabolic mechanisms indicate that all present-day cells on Earth descended from a single primordial ancestor.

Most of the genes of the bacterial symbionts that evolved into mitochondria are now found in the nucleus.

Eukaryotes contain a mixture of genes from eubacteria and archaebacteria.

Photosynthesis first evolved in the green algae.

Compared to humans, E. coli has about a thousand times less DNA.

Quiz 1: An Overview of Cells and Cell Research

RNA, unlike DNA, is capable of _______ a number of different chemical reactions.

The common source of electrons in the conversion of CO2 into organic molecules in photosynthesis is _______.

The two major groups of prokaryotic cells are the _______ and the _______, which diverged early in evolution.

The DNA in a bacterium is located in a region termed the _______.

The cell lineage that eventually became the plants acquired _______before acquiring _______.

The amoeba _______ exists as a unicellular organism in abundant nutrient conditions and forms multicellular fruiting bodies in starvation conditions.

_______ cells cover the surface of internal organs in the body, such as the intestine.

Short generation time is one of the major factors that support using yeast or _______ for many fundamental molecular genetics experiments.

Model systems serve as simplified examples in which the properties and development of cells can be examined easily. For mammals, a common model system is _______, and _______ is a common model for plants.

Model systems such as Caenorhabditis elegans, Drosophila melanogaster, and zebrafish are especially useful for studying problems in cell differentiation and developmental biology because, in contrast to single cells such as E. coli and yeast, they are _______ systems.

_______ cells, the most commonly used cell line, were derived from a biopsy of a tumor carried by Henrietta Lacks.

Viruses have proven to be useful tools with which to explore the properties of cells and complex processes such as cancer because viruses are dependent on _______ processes for much of their replication and metabolism.

_______ is a light microscope technique for studying the interaction of proteins.

In transmission electron microscopy, objects are imaged by their differences in _______ density.

Similarities in basic metabolic mechanisms indicate that all present-day cells on Earth descended from a single primordial ancestor.

Most of the genes of the bacterial symbionts that evolved into mitochondria are now found in the nucleus.

Eukaryotes contain a mixture of genes from eubacteria and archaebacteria.

Photosynthesis first evolved in the green algae.

Compared to humans, E. coli has about a thousand times less DNA.

The common source of electrons in the conversion of CO₂ into organic molecules in photosynthesis is _______.

The two major groups of prokaryotic cells are the _ and the _, which diverged early in evolution.

The cell lineage that eventually became the plants acquired _before acquiring _.

Model systems serve as simplified examples in which the properties and development of cells can be examined easily. For mammals, a common model system is _, and _ is a common model for plants.