Which fish has a sharp spearlike point at the tip of their tail that defends them against predators and sometimes secretes venom?
a. lamprey
b. hagfish
c. sharks
d. stingrays
e. lungfish
d
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Organisms that make their own organic compounds from inorganic substances are called
A. animals. B. animorphs. C. autotrophs. D. heterotrophs.
Which of the following is an example of thigmotropism?
a. vines bending around a pole as they grow up it b. seedlings bending towards the light c. roots growing down into the soil d. a shoot on its side turning to grow upwards e. leaves bend toward the sunlight
Gelatinous matrix What is the gelatinous matrix inside chloroplasts that contains ribosomes, DNA, and enzymes?
a) granum b) chlorophyll c) thylakoid d) stroma e) mitochondria
Which of the following precede the re-formation of the nuclear envelope during M phase in animal cells?
(a) assembly of the contractile ring (b) decondensation of chromosomes (c) reassembly of the nuclear lamina (d) transcription of nuclear genes