Light energy arrives at Earth in little packets called ________.
A. photons
B. light waves
C. rays
D. wavelengths
Answer: A
Biology & Microbiology
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Which of the following tropisms is the
response to touch in plants?
a. gravitropism b. phototropism c. thigmotropism d. mechanotropism e. chemotropism
Biology & Microbiology
If an anticodon was AUG, what would the
corresponding nucleotides on DNA be?
a. TAC b. ATG c. UAC d. AUG e. CGT
Biology & Microbiology
These are the simplest animals and are diploblastic, which means that they only have two layers of cells, an outer layer and an inner hollow layer that is involved in gathering food.
A. Mollusca B. Annelida C. Jellyfish D. Arthropoda
Biology & Microbiology
Which of the following cells engulf antigens and present fragments of them on their own surfaces for recognition?
a. plasma cells b. T lymphocytes c. NK cells d. dendritic cells
Biology & Microbiology