Water comprises at least ____ of the body of salps
a. 5%
b. 10%
c. 25%
d. 70%
e. 95%
E
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According to genetic evidence, the migration of H. sapiens out of Africa replaced other human populations, including Neanderthals and H. erectus, leading to their extinction
a. True b. False Indicate whether the statement is true or false
Immunity ____
a. is always adaptive b. is an organism's ability to resist and combat infections c. evolved after the emergence of multicellular organisms d. is only found in mammals e. is not specific for any given pathogen
Which part of a neuron allows it to receive and send electrochemical signals?
a. cytoplasmic extension b. nucleus c. neuroglial extension d. plasma membrane e. interneuron
When a virus has an envelope,
A) it likely escapes its host cell by budding. B) it likely escapes its host cell by lysis. C) it may escape its host cell either by budding or by lysis. D) it is always a bacteriophage. E) it is always an RNA-containing virus.