You are given a prepared slide and are told that it is a streptobacillus. without even looking at the slide under the microscope, you know which of the following? 1. the bacteria are linked together in chains. 2. the bacteria are spherical in shape. 3. the bacteria are in grape-like clusters. 4. the bacteria are rod-shaped. 5. the bacteria are gram-negative.
a) 1,2.
b) 1,4.
c) 2,3.
d) 2,4.
e) 1,4,5.

1 and 4

Explanation:

Streptobacilli are linked together in chains, the bacterium is gram positive and   the generally rod-shape. The genus could be aerobic ( required oxygen for their growth), falcultative anaerobe (in the absence of oxygen, they can switch to fermentation).

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

"a.) well–developed vascular system."