Evidence shows that the earliest life may have existed how long ago?

a. 2 billion years ago
b. 3.5 billion years ago
c. 1.3 billion years ago
d. 630 million years ago
e. 250 million years ago


b

Biology & Microbiology

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Recall that in many plants, if the shoot apical meristem is removed, axillary buds become active and new lateral branches form. What is this an example of?

A. auxin dominance B. axillary dominance C. meristem dominance D. apical dominance

Biology & Microbiology

Viruses that infect bacteria are

A. prions. B. not known to exist. C. composed of protein only. D. bacteriophages. E. also capable of causing disease in humans

Biology & Microbiology

Explain the function of ATP in muscle contractions

What will be an ideal response?

Biology & Microbiology

Albinism is due to the inability to make ________

A) collagen B) tyrosine C) melanin D) hair

Biology & Microbiology