1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
The mean resting pulse rate for men is 72 beats per minute. a simple random sample of men who regularly work out at mitch's gym
tamaranim1 [39]

Claim: the mean resting pulse rate for men is less than 72 bpm.

Symbolic form would be: μ < 72

Step 1: null hypothesis  : μ > =  7 2 b p m

Step 2: alternative hypothesis:  μ <  7 2 b p m



Step 3: the test statistic is z = mean – μ / standard dev/sqrt (n) = -3/4 / 1.7639 = -1.92


Step 4: c v method: since z α = -1.645, the test static is z = -1.92 is less than the CV, we reject null hypothesis


            P Value method: area is 0.0274, since the p value is <= α, reject null hypothesis.

Step 5: the sample data support the claim that the mean resting pulse rate for men is less than 72 bpm.

5 0
3 years ago
Read 2 more answers
"To restore and maintain the chemical, physical, and biological integrity of the nation's water" was the purpose of
kompoz [17]

The answer is d..........

4 0
3 years ago
I NEED THIS QUESTIONS IS FOR TODAY HELP!!!! <br><br> NO LINKS PLEASE PLEASE!!
luda_lava [24]

Answer:

Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range.

Explanation:

8 0
3 years ago
What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bo
soldier1979 [14.2K]
That would be an ionic bond. Which is an attraction between a cation and an anion.
3 0
2 years ago
Read 2 more answers
A bird fluffs its feathers to trap body heat to keep warm during winter months. This is an example of
Llana [10]
Homeostasis, because once the bird body temperature starts to overheat, it's body and mind work together to lower that body temperature down to normal
3 0
3 years ago
Other questions:
  • When you feel cold, there are sensors in your skin that tell the brain you need to warm up. The brain sends messages, by way of
    10·1 answer
  • When an object has more negative charge than positive charge the result is called
    9·1 answer
  • A trombe wall traps heat?
    15·1 answer
  • How are cells making new proteins and DNA connected
    14·1 answer
  • The capital city OF ARIZONA is Phoenix.
    5·1 answer
  • The Body Cavity that protects the brain is enclosed in bone. Why do you think the abdominal Cavity is not enclosed in bone?
    15·2 answers
  • So, if one parent was RR (red) and the other parent
    8·1 answer
  • Explain why meiosis is such a critical process in the inheritance traits. Be as specific as you can.
    11·1 answer
  • Which of the following is an example of natural selection?
    8·1 answer
  • Can anyone help…………………………
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!