I think this is correct
1. Organelle, cells, tissues, organs, organ systems, organisms, population, communities, ecosystems and finally biosphere.
2. (Human Body) Bone cells, Fat cells, Nerve cells.
3. neuron, a collection of neurons, nervous system, brain
4. Plants don't have a liver, stomach or lungs, while animal organ systems do.
Adaptations can give an organism a competitive edge but adaptations are not always used for completion against other species
<u>Answer:</u>
Pfr and phytochrome would be analogous to mammalian opsins in their light-sensing ability.
<u>Explanation:
</u>
- Phytochromes are proteins which are 'sensitive to light', and are able to detect light sources on the plant body.
- These form an integral part of the leaves of a plant body.
- These proteins are made up of two forms: Pf and Pfr. Pf exists in an inactive form of phytochrome which activates in the presence of light to form Pfr which is an active form.
- This Pfr induces a cellular response in the plant. Similar to the opsins in Mamalian eyes, these also change in structure when exposed to light.
- Hence, Pfr and phytochrome are the molecules which can be analogous to 'mammalian opsins' in their 'light-sensing ability'.
Answer:
its A and D