Viruses - Biological Science | Biology+

Course

Biology Science

Study Pack

Set 1: Biology and the Tree of Life

Set 2: Water and Carbon: the Chemical Basis of Life

Set 3: Protein Structure and Function

Set 4: Nucleic Acids and the Rna World

Set 5: An Introduction to Carbohydrates

Set 6: Lipids, Membranes, and the First Cells

Set 7: Inside the Cell

Set 8: Energy and Enzymes

Set 9: Cellular Respiration and Fermentation

Set 10: Photosynthesis

Set 11: Cellcell Interactions

Set 12: The Cell Cycle

Set 13: Meiosis

Set 14: Mendel and the Gene

Set 15: Dna and the Gene: Synthesis and Repair

Set 16: How Genes Work

Set 17: Transcription, Rna Processing, and Translation

Set 18: Control of Gene Expression in Bacteria

Set 19: Control of Gene Expression in Eukaryotes

Set 20: The Molecular Revolution: Biotechnology and Beyond

Set 21: Gene Structure and Development

Set 22: Evolution by Natural Selection

Set 23: Evolutionary Processes

Set 24: Speciation

Set 25: Phylogenies and the History of Life

Set 26: Bacteria and Archaea

Set 27: Protists

Set 28: Green Algae and Land Plants

Set 30: An Introduction to Animals

Set 31: Protostome Animals

Set 32: Deuterostome Animals

Set 33: Viruses

Set 34: Plant Form and Function

Set 35: Water and Sugar Transport in Plants

Set 36: Plant Nutrition

Set 37: Plant Sensory Systems, Signals, and Responses

Set 38: Plant Reproduction and Development

Set 39: Animal Form and Function

Set 40: Water and Electrolyte Balance in Animals

Set 41: Animal Nutrition

Set 42: Gas Exchange and Circulation

Set 43: Animal Nervous Systems

Set 44: Animal Sensory Systems

Set 45: Animal Movement

Set 46: Chemical Signals in Animals

Set 47: Animal Reproduction and Development

Set 48: The Immune System in Animals

Set 49: An Introduction to Ecology

Set 50: Behavioural Ecology

Set 51: Population Ecology

Set 52: Community Ecology

Set 53: Ecosystems and Global Ecology

Set 54: Biodiversity and Conservation Biology

Set 33 Viruses

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Set 33 Viruses

(Multiple Choice)

Free

Figure 33.1 -Cells were infected with approximately 1000 copies of either virus A or virus B at the 0 time point. At 5- minute intervals, a sample of the virus and cell mixture was removed. The intact cells were removed from the sample, and the number of viruses per milliliter of culture was determined. Using the data in Figure 33.1, how long does it take for virus A to go through one lytic cycle? A) 30 minutes B) 90 minutes C) 45 minutes D) 15 minutes

Figure 33.1
-Cells were infected with approximately 1000 copies of either virus A or virus B at the 0 time point. At 5- minute intervals, a sample of the virus and cell mixture was removed. The intact cells were removed from the sample, and the number of viruses per milliliter of culture was determined.
Using the data in Figure 33.1, how long does it take for virus A to go through one lytic cycle?

A) 30 minutes
B) 90 minutes
C) 45 minutes
D) 15 minutes

Answer

(Multiple Choice)

Free

When people die from HIV infections, it is usually because they

A) divert too much energy toward replicating the virus.
B) have too many T cells, and this overwhelms their immune systems.
C) have too many HIV particles in their lymphatic system, which causes it to shut down.
D) have too few T cells to adequately fight infection.

Answer

(Multiple Choice)

Free

What is a significant difference between lytic and lysogenic viral growth?

A) In lysogenic growth, there is a continuous release of mature viral particles throughout the infection.
B) In lysogenic growth, the viral genome gets incorporated into the host genome.
C) In lytic growth, the host cells are not destroyed.
D) In lytic growth, there are no mature viruses produced.

Answer