D.
their atomic numbers increase by 1 from left to right
i hope i helped! :)
Vestibule, Saccule, Utricle, Maculae, and Otolithic Membrane.
Answer;
They contain structures that perform life-functions
Single celled organisms are able to maintain internal stability because they contain structures that perform life-functions.
Explanation;
Single cell organisms are those organisms that contain only one cell unlike multicellular organisms that contain many number of cells.
Single cell organisms include bacteria, archaea and protozoa.
Single cell organisms live and carry out all their life processes in one single cell. Most of them are microscopic; examples are Euglena, green algae, etc.
<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'.
Five changes associated with aging include
1. There is progressive reduction in physical health due to loss of muscle tissue
2.There is occurrence of vision changes whereby it becomes impaired in older people
3. Skin becomes less elastic and age spots and wrinkles appear on the skin
4. Hearing also becomes impaired
5. length of sleep at night massively decreases.