, 1. Which of the following is the appropriate threshold value for mammalian neurons?
o -80 Mv
o -55 mV
o 0 mV
o +35 mV
2. In a certain plant, red flowers are dominant over white flowers. A plant heterozygous
for red flowers and a plant with white flowers are crossed. Which of the following is
the expected proportion of phenotypes in the next generation?
o 2 red, 2 white
o 4 red, 0 white
o 3 red, 1 white
o 1 red, 3 white
3. Which of the following structures is present in both prokarayotic cells?
o Endoplasmic reticulum
o Cell membrane
o Chloroplast
o Golgi apparatus
4. Which of the following can lead to a tsunami?
o Sunspot activity
o Lightning strikes