Which of these does a virus need in order to multiply?(1 point)
Responses
New ADP from a host cell
New ADP from a host cell
A host cell to replicate the virus’s DNA
A host cell to replicate the virus’s DNA
Chloroplasts from a host cell
Chloroplasts from a host cell
A host cell to provide oxygen for the virus
A host cell to replicate the virus’s DNA
The correct response is:
A host cell to replicate the virus's DNA
To determine which option a virus needs in order to multiply, we need to understand the basic characteristics of a virus. Viruses are infectious agents that rely on a host cell to replicate and produce more virus particles. They do not possess the necessary organelles or metabolic processes to reproduce on their own. Instead, they must invade a host cell and hijack its cellular machinery to replicate and multiply.
Looking at the given options:
1. New ADP from a host cell: ADP (adenosine diphosphate) is a molecule involved in energy metabolism. While viruses do require energy to replicate, they do not specifically need new ADP from a host cell. ADP can be produced in a host cell through cellular respiration, but it is not a direct requirement for viral multiplication.
2. A host cell to replicate the virus's DNA: This option is the correct answer. Viruses typically contain genetic material, either DNA or RNA, which needs to be replicated in order for the virus to multiply. To accomplish this, the virus needs to enter a host cell and use the host cell's replication machinery to make copies of its genetic material.
3. Chloroplasts from a host cell: Chloroplasts are specialized organelles found in plant cells that are responsible for photosynthesis. Viruses do not require chloroplasts from a host cell to multiply. Additionally, most viruses infect animal cells, which do not possess chloroplasts.
4. A host cell to provide oxygen for the virus: Oxygen is used by cells to generate energy through the process of cellular respiration. However, viruses do not require oxygen themselves, nor do they need a host cell to provide oxygen. Viruses can only replicate using the host cell's resources and metabolic processes.
Therefore, the correct option is:
- A host cell to replicate the virus's DNA.
Which of the following is the equation for photosynthesis?(1 point) Responses 6 CO2 + 6 ADP + light → 6 O2 + 6 H2O 6 CO 2 + 6 ADP + light → 6 O 2 + 6 H 2 O 6 CO2 + 6 H2O → 6 O2 + 6 ATP 6 CO 2 + 6 H 2 O → 6 O 2 + 6 ATP 6 C6H12O6 + 6 H2O + ATP → 6 O2 + 6 CO2 6 C 6 H 12 O 6 + 6 H 2 O + ATP → 6 O 2 + 6 CO 2 6 CO2 + 6 H2O + light → 6 O2 + 6 C6H12O6
6 CO2 + 6 H2O + light → 6 O2 + 6 C6H12O6
@bot
Which statement best describes viral reproduction? (1 point)
Viral nucleic acid is inserted into a host cell where it may
replicate immediately or become dormant until a later
time.
The lysogenic phase of viral replication causes cell death
while the lytic phase of viral replication results in prophage
formation.
Viruses reproduce independent of cell based organisms.
Viruses may contain DNA or RNA.
The first statement best describes viral reproduction:
Viral nucleic acid is inserted into a host cell where it may replicate immediately or become dormant until a later time.
Which of the following is the equation for cellular respiration?
(1 point)
6 C H O + 6 O → 6 H O + 6 CO + ATP 6 12 6 2 2 2
6 CO2 + 6 H2O → 6 O2 + 6 ATP
6 CO2 + 6 H2O + light → 6 O2 + 6 C6H12O6
6 CO2 + 6 ADP + light → 6 O2 + 6 H2O
The correct equation for cellular respiration is:
6 CO2 + 6 H2O → 6 O2 + 6 ATP
Which of the cells characterized in the chart above is a plant
cell?
(1 point)
A
D
B
C
Without the chart provided, I cannot identify the specific cell labeled as a plant cell. Please provide more information or upload the chart so I can assist you better.
Ribosome Cell Wall Chloroplast Nuclear Plasma
Cell A x x x x x
Cell B x x x
Cell C x x x
Cell D x x x x
Which of the cells characterized in the chart above is a plant
cell?
(1 point)
A
D
B
C
Based on the chart provided, the plant cell would be Cell C. This is because Cell C has the characteristics of having ribosomes, a cell wall, and chloroplasts.
Which of the following statements describes active transport?
(1 point)
[Movement of a substance against a concentration
gradient. D]
Net movement of a substance from a region of higher
concentration to a region of lower concentration
Movement of a specific substance across a membrane.
Spontaneous movement of a substance through a
semipermeable membrane.
The correct statement that describes active transport is:
Movement of a substance against a concentration gradient.
Consider the cell cycle shown below. A cell will stop
dividing and go into G0, the resting phase, if it receives the
proper signal at the G1 checkpoint.
What would happen if the G1 checkpoint regulation failed?
(1 point)
The checkpoint is not important, the cell would go on to
the next phase.
The cell would enter into G0, the resting phase.
The cell would remain in G1 and continue to grow.
The cell would continue in the cycle and divide
uncontrollably, which may lead to cancer.
If the G1 checkpoint regulation failed, the cell would continue in the cycle and divide uncontrollably, which may lead to cancer.
A student observed cells of a familiar species under a
microscope. Analyze the observations the student recorded
in the chart below.
1. Ribosomes are present.
2. Genetic material is present.
3. No membrane bound organelles.
4. Cell wall is present.
Which of the following observations supports the student’s
conclusion that the species is a prokaryote?
(1 point)
Observation 1
Observation 2
Observation 3
Observation 4
The observation that supports the student's conclusion that the species is a prokaryote is Observation 3: No membrane-bound organelles. Prokaryotes do not have membrane-bound organelles, such as mitochondria or chloroplasts, unlike eukaryotic cells.
Drag and drop the correct term for the organelle labeled A in
the diagram. (1 point)
cell Membrane lysosome
endoplasmic reticulum nucleus
mitochondrion golgi complex