Which is a common feature of cancer cells?
A) anchorage dependence
B) contact inhibition
C) metastasis
D) controlled division
C
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When the squid that contain luminescent bacterial symbionts hatch, they do NOT contain a bacterial symbiont. Symbiont transmission in this symbiosis is
A) vertical from parent to offspring. B) horizontal and involves specific selection of the symbiont from the environment. C) random and results in various different species being selected as the symbiont. D) mixed and results in multiple symbiont species colonizing the squid at once.
Experiments have shown that even if it is supplied by no other means, plants near the ocean can get enough of the
essential micronutrient ____ from the air, and plants can also get this essential micronutrient from sweat from a person’s hands.
a. sulfur b. manganese c. chlorine d. magnesium e. sodium
Which of the following is a benefit of a nematode’s cuticle?
a. protecting against predators b. promoting rapid growth c. ensuring efficient digestion d. maintaining a stable temperature
Which of the following biological technology has enabled scientists to extend the life span of individuals who are suffering from HIV / AIDS?
What will be an ideal response?