Which of the following features would have helped early plant ancestors evolve to a terrestrial existence?
A. apical cells
B. plasmodesmata
C. a cuticle
D. placenta
E. All of these features would have helped.
Answer: C
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The function of the glycoprotein spike on some viruses is to:
a. allow viral entry into the host cell. b. protect the nucleic acid. c. prevent drying out and the destruction of the virus. d. stabilize attachment for the lipid envelope.
In biological nitrogen-fixation,
a. ammonia is converted to nitrogen gas. b. nitrogen gas (N2) is converted to ammonia (NH3). c. ammonia is converted to nitrate. d. amino acids are linked into proteins in ribosomes. e. nitrate is converted to ammonia.
Most microorganisms on Earth can only live and survive in habitats that are similar to human body conditions.
Answer the following statement true (T) or false (F)
Disinfectants known as (alcohols/oxidizers/aldehydes) have the chemical group -CHO, which reacts with and damages both proteins and nucleic acids
What will be an ideal response?