Biology, 13.05.2021 01:00 ochoachanna
1.Which of the following is true of High Intensity Discharge (HID) lighting?
a. it tends to generate high levels of heat
b. it tends to generate little heat
c. it is the most recent form of greenhouse lighting
d. it is the least expensive form of greenhouse lighting
2.Which of the following systems is the most expensive method of controlling temperature in a greenhouse?
a. solar heating
b. forced-air heating
c. radiant heating
d. convection tubes
3.Which of the following best describes a passive ventilation system?
A. a system using the natural motion of air through vents to remove hot air from a greenhouse.
B. a system using fans to move heated air around and out of a greenhouse.
C. a system using tubes suspended from the ceiling to move heated air to specific locations.
D. a system using the natural motion of air through heated pipes in the floor to circulate heat.
4.In which of the following kinds of greenhouse would a grower use the primary growing area placement of a type of artificial lighting?
A. an enclosed warehouse with no natural lighting
B. a hoop house to augment natural light
C. a Quonset-style greenhouse to augment natural light
D. a glass greenhouse with non-augmented natural lighting
5.If a lighting system for a greenhouse has an operating cost of $8 per hour and the lighting system is used for 3 hours per day, what would the cost be per month, using a 30-day average month-length?
A.$7,200
B.$720
C.$2,880
D.$240
For all 5 will be 95 points and brainliest help ASAP
Answers: 1
Biology, 21.06.2019 20:00, skylex
You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip. nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule. true/false
Answers: 1
1.Which of the following is true of High Intensity Discharge (HID) lighting?
a. it tends to generat...
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