Responses
The viral genome is injected into the cell only during the lytic cycle.
The viral genome is injected into the cell only during the lytic cycle.
The lysogenic cycle involves newly replicated virus bursting from the cell.
The lysogenic cycle involves newly replicated virus bursting from the cell.
The lytic cycle involves the merging together of the viral and host genomes.
The lytic cycle involves the merging together of the viral and host genomes.
The viral genome incorporates into the host genome during the lysogenic cycle.
11 answers
The correct response is:
The viral genome incorporates into the host genome during the lysogenic cycle.
In the lysogenic cycle, the viral DNA can integrate into the host cell's genome and remain dormant until it is triggered to enter the lytic cycle, where new viruses are produced and the host cell is lysed. The other statements are incorrect regarding the characteristics of the lytic and lysogenic cycles.
The correct response is:
The viral genome mutates very quickly.
One of the primary challenges in creating a vaccine against the common cold is the rapid mutation rate of the viruses that cause it, particularly rhinoviruses and other coronaviruses. This allows them to change frequently, making it difficult to develop a long-lasting and effective vaccine. The other statements provided are incorrect.
The correct order of cell types from least differentiated to most differentiated is:
totipotent stem cells → pluripotent stem cells → multipotent stem cells → neuron
This order reflects the degree of differentiation, with totipotent being the least differentiated and neuron being one of the most differentiated.
The best response that accurately describes the inputs and outputs of mitosis in a multicellular organism is:
Input: A single cell ready to divide. Output: Two daughter cells that are genetically identical to the parent cell and each other.
Mitosis is the process through which a single somatic cell divides to produce two genetically identical daughter cells. This process is essential for growth, development, and tissue repair in multicellular organisms. The other options describe processes related to differentiation or aspects of cell function, which are not direct outputs of mitosis itself.
The correct response is:
Gene expression is different in specialized cells.
Different types of cells arise from the same initial DNA sequence due to variations in gene expression. Each type of cell expresses a unique set of genes that determine its structure, function, and characteristics, leading to the specialization needed for various roles in the organism. The other responses are inaccurate: there are indeed different types of cells, all somatic cells typically have the same chromosomes, and cell specialization occurs through differentiation, not before mitosis begins.
The correct response is:
DNA
Every cell in an organism (with some exceptions like red blood cells) contains the same DNA, which carries the genetic information for that organism. While mRNA, lipids, and proteins can vary between different cell types due to differences in gene expression and functional roles, all cells share the same genetic blueprint in their DNA.
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