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Igoryamba
3 years ago
8

What term best describes the following organism: the so-called blue-green algae, they are photosynthetic bacteria; producing oxy

gen, they contain sheets of plasma membranes that contain photosystems; they utilize chlorophyll-a; just like plants; but contain phycolibin pigments that are not found in plant chloroplasts; form heterocysts that are nitrogen fixing; form akinetes (spores); and heterocysts (N-fixing cells); some have separation discs (hormonogonia) that cause filaments to fragment (dispersal); Prochloronta a subclade that is ancestral to plant chloroplasts?
a) Methanogen.
b) Spirochaeta.
c) Enteric bacteria.
d) Extreme halophile.
e) Cyanobacteria.
Biology
1 answer:
Olegator [25]3 years ago
8 0

Answer:

The correct answer will be option E.

Explanation:

The features given in the question are the characteristics features of the group of bacteria belonging to Cyanobacteria.

These Cyanobacteria are the prokaryotes which are capable of synthesizing the food through a process called photosynthesis. These bacteria use sunlight as their energy, use water and air to synthesize food. They under anaerobic condition synthesize the nitrogen in special structures called heterocyst, a characteristic feature of cyanobacteria.

Thus, the features given in the question are:  

1. contain photosystems to carry out photosynthesis.

2. producing oxygen

4. contain phycobilins

6. Hetrocysts: nitrogen-fixing structures.

7. The ancestor of plant chloroplasts.

Thus, option E is the correct answer.

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"A local biologist needs a program to predict population growth. the inputs would be..." The resultant code is

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# the call function

<h3>What is a program?</h3>

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CQ

A local biologist needs a program to predict population growth. The inputs would be: 1. The initial number of organisms 2. The rate of growth (a real number greater than 1) 3. The number of hours it takes to achieve this rate 4. A number of hours during which the population grows.                           For example, one might start with a population of 500 organisms, a growth rate of 2, and a growth period to achieve this rate of 6 hours. Assuming that none of the organisms die, this would imply that this population would double in size every 6 hours. Thus, after allowing 6 hours for growth, we would have 1000 organisms, and after 12 hours we would have 2000 organisms. Write a program that takes these inputs and displays a prediction of the total population.  

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