You would expect a high concentration of mitochondria in heart cells. Heart cells (cardiomyocytes) require a significant amount of energy to constantly contract and pump blood throughout the body, which is provided by the mitochondria through cellular respiration.
Consider the process that occurs in mitochondria. In what type of cells would you expect a high concentration of mitochondria?(1 point)
Responses
heart cells
heart cells
blood cells
blood cells
skin cells
skin cells
nerve cells
11 answers
Which type of microscope allows us to see organic specimens at the atomic level?(1 point)
Responses
light-based microscope
light-based microscope
fluorescence microscope
fluorescence microscope
atomic force
atomic force
scanning tunneling microscope
Responses
light-based microscope
light-based microscope
fluorescence microscope
fluorescence microscope
atomic force
atomic force
scanning tunneling microscope
The type of microscope that allows us to see organic specimens at the atomic level is the scanning tunneling microscope. This microscope provides atomic resolution and can visualize surfaces at the atomic scale, making it suitable for studying the structures of organic materials.
Neurotransmitter release is an example of ________.(1 point)
Responses
cyclical behavior
cyclical behavior
autocrine signaling
autocrine signaling
cellular miscommunication
cellular miscommunication
paracrine signaling
Responses
cyclical behavior
cyclical behavior
autocrine signaling
autocrine signaling
cellular miscommunication
cellular miscommunication
paracrine signaling
Neurotransmitter release is an example of paracrine signaling. This type of signaling involves the release of neurotransmitters from one nerve cell that act on nearby target cells.
Which best describes a provirus?(1 point)
Responses
A provirus is the host cell’s DNA that has been destroyed.
A provirus is the host cell’s DNA that has been destroyed.
A provirus is viral DNA incorporated into the host cell’s DNA.
A provirus is viral DNA incorporated into the host cell’s DNA.
A provirus is newly replicated viral DNA after injection.
A provirus is newly replicated viral DNA after injection.
A provirus is bacterial DNA incorporated into viral DNA.
Responses
A provirus is the host cell’s DNA that has been destroyed.
A provirus is the host cell’s DNA that has been destroyed.
A provirus is viral DNA incorporated into the host cell’s DNA.
A provirus is viral DNA incorporated into the host cell’s DNA.
A provirus is newly replicated viral DNA after injection.
A provirus is newly replicated viral DNA after injection.
A provirus is bacterial DNA incorporated into viral DNA.
A provirus is best described as viral DNA incorporated into the host cell’s DNA. This occurs when a virus integrates its genetic material into the genome of the host cell, allowing it to replicate along with the host's DNA.
What is true about how the circulatory system interacts with other body systems?(1 point)
Responses
The circulatory system interacts with the digestive system by transporting digestive enzymes to the stomach.
The circulatory system interacts with the digestive system by transporting digestive enzymes to the stomach.
The circulatory system interacts with the respiratory system by transporting carbon dioxide from tissues to the lungs.
The circulatory system interacts with the respiratory system by transporting carbon dioxide from tissues to the lungs.
The circulatory system interacts with the skeletal system by supplying the bones with neural signals for growth.
The circulatory system interacts with the skeletal system by supplying the bones with neural signals for growth.
The circulatory system interacts with the muscular system by initiating muscle contractions.
The circulatory system interacts with the muscular system by initiating muscle contractions.
Responses
The circulatory system interacts with the digestive system by transporting digestive enzymes to the stomach.
The circulatory system interacts with the digestive system by transporting digestive enzymes to the stomach.
The circulatory system interacts with the respiratory system by transporting carbon dioxide from tissues to the lungs.
The circulatory system interacts with the respiratory system by transporting carbon dioxide from tissues to the lungs.
The circulatory system interacts with the skeletal system by supplying the bones with neural signals for growth.
The circulatory system interacts with the skeletal system by supplying the bones with neural signals for growth.
The circulatory system interacts with the muscular system by initiating muscle contractions.
The circulatory system interacts with the muscular system by initiating muscle contractions.
The statement that is true about how the circulatory system interacts with other body systems is: The circulatory system interacts with the respiratory system by transporting carbon dioxide from tissues to the lungs.
This accurately describes the function of the circulatory system in exchanging gases—transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues to the lungs for exhalation.
Alternation of generations in plants permits(1 point)
Responses
neither mitosis nor meiosis.
neither mitosis nor meiosis.
both mitosis and meiosis.
both mitosis and meiosis.
only meiosis.
only meiosis.
only mitosis.
Responses
neither mitosis nor meiosis.
neither mitosis nor meiosis.
both mitosis and meiosis.
both mitosis and meiosis.
only meiosis.
only meiosis.
only mitosis.
Alternation of generations in plants permits both mitosis and meiosis.
In this life cycle, plants alternate between a diploid sporophyte generation that undergoes meiosis to produce haploid spores and a haploid gametophyte generation that undergoes mitosis to produce gametes. Thus, both processes are involved in the life cycle of plants.
11 answers