Answer: B. littoral zone
Explanation: Their primary prey, insects, live or fly near the shallow and outside edges of ponds and lakes. There is also less predator fish at the edges of lakes and ponds.
The question is incomplete. The complete question is:
Question: Why do organisms without oxygen need to convert pyruvate to lactate?
A) because pyruvate is toxic to the cells
B) in order to regenerate NAD+
C) in order to use lactate in the citric acid cycle
D) because lactate is needed to produce ATP
Answer:
B) in order to regenerate NAD+
Explanation:
Kreb's cycle and electron transport chain (ETC) are the aerobic stages of cellular respiration. ETC regenerates NAD+ and FAD+ by oxidation of NADH and FADH2 produced during glycolysis and Kreb's cycle. Here, oxygen serves as the terminal electron acceptor.
Glycolytic reactions use NAD+ as an electron acceptor and produce NADH. Therefore, a constant supply of NAD+ is required to sustain glycolysis. In absence of oxygen, ETC cannot occur and organisms convert pyruvate into lactate. Pyruvate is reduced in lactate and NADH serves as the electron donor. Thereby, lactate fermentation regenerates NAD+ to continue the process of glycolysis.
archaebacteria
Explanation:
The first organism on earth belonged to the archaebacteria kingdom. They were the first group of organisms that colonized the surface of the earth.
- They are of three major types methanogens, halophilic and thermoacedophilic.
- The first archaebacteria that evolved separately from bacteria and blue-green algae.
- They formed billion of year of ago.
- They lacked the characteristics of a true cell and they are known to be prokaryotes.
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Answer:
germicide removal of microbes from a limited area
Explanation:
Antisepsis refers to the practice of using an antiseptic substance to remove or destroy disease-causing pathogens.
Virucides are chemical agents that aid in the deactivation or destruction of viruses.
Germicides are chemical agents that are capable of destroying germs with germs being harmful microscopic organisms.
Disinfection refers to the action of using chemicals to clean off or destroy bacteria from an area.
Considering the definition of each term above, the mismatched pair of all the terms is germicide -<em> germicide removal of microbes from a limited area.</em>
Germicide is a substance and not an action.
