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butalik [34]
3 years ago
11

What is the specific function of a heterocyst cell of an Anabanea filament?

Biology
1 answer:
murzikaleks [220]3 years ago
3 0
Heterocyst-forming cyanobacteria differentiate highly specialized cells to provide fixed nitrogen to the vegetative cells in a filament. In the presence of a source of combined nitrogen such as nitrate or ammonium, Anabaena PCC 7120 grows as long filaments containing hundreds of photosynthetic vegetative cells.
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the process in which two species interact in ways that benefit both of them is called a. predation. b. mutualism. c. parasitism.
Scilla [17]
B. mutualism is the right answer
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How much oxygen is produced (the units are milliliters of oxygen per hour) when light intensity is 0%. How do you explain these
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Answer:

As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity. However, at sufficiently high levels of light intensity, the rate oxygen evolution remains constant.

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3 years ago
The cartilage which divides the nose in two parts is called the
VARVARA [1.3K]
The cartilage of septum!!!
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3 years ago
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Which species is threatening the natural wildlife on the galapagos islands?
g100num [7]
Galapagos islands are groups of island in the pacific ocean that are known to have a wide range of  native animals such as giant tortoise that found no where else on earth. These native animals helped Darwin in the development of the theory of natural significance which attributes to the biological significance of the Galapagos islands. Human species is a threat to the natural wildlife on these islands mainly due to poaching and destruction of natural forests that destroys habitat and also impacts negatively on biological diversity of living organisms.
3 0
3 years ago
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A Church spire in a form of a regular hexagonal pyramid whose base edge is 8ft and whose altitude is 75ft is to be painted at a
ollegr [7]
Given:
base edge - 8 ft
altitude or height - 75 ft

Surface area = [(3√3)/2] a² + 3a[√h² + (3a²/4)]
S.A = 2.6*8² + 3(8) * √75² + [(3*8²)/4]
S.A = 166.4 + 24 * √5625 + 48
S.A = 166.4 + 24 * √5674
S.A = 166.4 + 24 * 75.33
S.A = 166.4 + 1807.92
S.A = 1974.32 ft²

convert square feet to square yard.

1 sq ft = 0.1111 sq yd

1974.32 ft² * 0.1111 sq.yd/sq.ft = 219.35 sq yd.

22 per sq. yard

219.35 sq. yard * $22/sq.yd = $4,825.70

Total cost is $4,825.70
5 0
3 years ago
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