Discuss the criteria used for classifying viruses into families and genera.

What will be an ideal response?


Biology & Microbiology

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Why is carbon so important in biology?

A) It is a common element on Earth. B) It has very little electronegativity, making it a good electron donor. C) It bonds to only a few other elements. D) It can form a variety of carbon skeletons and host functional groups.

Biology & Microbiology

Mitochondria and chloroplasts are thought to have once been free-living bacteria that invaded another cell

Indicate whether this statement is true or false.

Biology & Microbiology

In a certain plant, when individuals with blue flowers are crossed with individuals with blue flowers,

only blue flowers are produced. Plants with red flowers crossed with plants with red flowers sometimes produce only red flowers, although other times they produce either red or blue flowers. When plants with red flowers are crossed with plants with blue flowers, sometimes only red flowers are produced; other times either red or blue flowers are produced. Which gene is dominant? What will be an ideal response?

Biology & Microbiology

What is one difference between the erythrocytes of mammals and other vertebrates?

a. Mammal erythrocytes lack nuclei. b. Mammal erythrocytes respond to changes in water concentration. c. Mammal erythrocytes are oval with swollen centers. d. Other vertebrates do not have erythrocytes. e. Other vertebrates use a respiratory pigment other than hemoglobin.

Biology & Microbiology