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Tanya [424]
2 years ago
8

When electrons of a chlorophyll molecule are raised to a higher energy level, they?

Biology
1 answer:
fomenos2 years ago
4 0
When electrons of a chlorophyll molecule are raised to a higher energy level, they are transferred to an electron carrier. The correct answer is D, are transferred to an electron carrier. 
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Use the drop-down menus and what you know about index fossils to choose the correct answers.
galina1969 [7]

Answer:

1-short

2-order

3-different

Explanation:

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4 0
3 years ago
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Which microscope is used to observe a specimen that emits light when illuminated with an ultraviolet light?
jonny [76]

Answer: Fluorescence microscope

Explanation:

The basic function of a fluorescence microscope is to irradiate the specimen with a desired and specific band of wavelengths. A fluorescence microscope uses a mercury or xenon lamp to produce ultraviolet light. The light comes into the microscope and hits a dichroic mirror. The dichroic mirror reflects the ultraviolet light up to the specimen. The ultraviolet light excites fluorescence within molecules in the specimen. The objective lens collects the fluorescent-wavelength light produced. This fluorescent light passes through the dichroic mirror and a barrier filter, making it to the eyepiece to form the image.

6 0
3 years ago
1. A normal mammalian cell will shrink if it is placed into_________. (Assume all solutes are non-penetrating) A. pure water B.
GrogVix [38]

Answer:

B. 50 mM glucose; E. 300 mM glucose

Explanation:

In order for the cell to shrink the concentration of solutes in the blood should be above normal or higher than the intracellular concentration, so that water moves from the inside of the cell to the outside by the process known as osmosis.

The normal blood levels of NaCl = ~ 154 mM; therefore A, C and D will not cause any shrinkage.

The normal blood levels of glucose = ~ 3.9 to 7.1 mM; therefore water would move from the intracellular to the extracellular space since the solutes are 10x higher outside the cell, causing shrinkage of the cell.

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3 years ago
What is cytokinesis and when does it occur
Mariulka [41]
Cytoplasmic division of a cell at the end of mitosis or meiosis. it happens during the nuclear division phase called anaphase, which continues through telophase.
8 0
2 years ago
Fad diets that require a high protein intake cause the body to excrete more calcium, which can lead to?
WITCHER [35]
Calcium deficiency disease (hypocalcemia) --- like osteoporosis, osteopenia !!
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