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.
Answer:
I. The nuclear membrane breaks up.
II. Sister chromatids condense.
III. Sister chromatids align on the metaphase plate.
IV. The cleavage furrow forms.
V. Sister chromatids separate.
Explanation:
Mitosis is divided into 5 stages:
- Prophase
- Metaphase
- Anaphase
- Telophase
- Cytokinesis
The prophase stage is marked by two main events
- <em>Dissolution or breakage of nuclear membrane</em>
- <em>Condensation of genetic materials</em>
Metaphase is marked by
- <em>Alignment of chromosomes (made up of two sister chromatids) on the metaphase plate</em>
- <em>Attachment of spindles to aligned chromosomes at the centromere</em>
Anaphase is marked by
- <em>Initiation of cleavage furrow formation</em>
- <em>Shortening of spindle fibers results in the separation of sister chromatids</em>
- <em>Sister chromatids begin migrating to opposite poles</em>
Telophase
- <em>Chromatids completes their migration to the poles</em>
Cytokinesis
- <em>Nuclear membrane reforms</em>
- <em>Sister chromatids decondense</em>
- <em>Cytoplasm divides</em>
Answer:
C. Develop new ways to test the hypothesis.
Explanation:
Hope this helps! ;)
B) does not dissociate completely