Answer: Option (a) is the correct answer.
Explanation:
Conduction is defined as the process in which there is transfer of heat through the material of substance due to the difference in temperature of adjoining regions.
For example, cooking omelet in a pan is a conduction process.
Thus, we can conclude that out of the given options conduction is the process which describes the transfer of heat through matter by molecular activity.
Answer:
Xylem
Explanation:
Xylem is a conducting tissue found in vascular plants in which most plant use to obtain water and minerals they need through their roots. Water and mineral moves from the soil to roots to stems and to leaves. The minerals such as potassium (K+), Calcium (Ca2+) travels in dissolved for in the water with various organic molecules supplied by root cells.
Water and minerals enter the root by different paths but converge in the stele, or central vascular bundle in roots.
Water conducting cells is known as tracheary elements.
<h2>c) is the correct option</h2>
Explanation:
Inhibition of Cdk activity occurs by Cdk inhibitory protein (CIPs)
- A group of specific proteins called CIPs binds with active cyclin Cdk complex and cause their inactivation
- Activated protein retinoblastoma (p53)act as transcriptional factor and induce synthesis of Cdk inhibitory proteins p21CIPs
- p21CIPs is a Cdk inhibitory protein that binds and inhibit the activity of G1 Cdk cyclin complex as a result cell cycle arrest in G1 phase
The order for the formation of sedimentary rocks goes like this: Weathering, erosion, deposition, compaction, and cementation.
That's how the process goes, in order to from a sedimentary rock. I know this because, I looked in my science book and did some research online.
Hope I helped!
- Amber
Answer:
Chitin
Explanation:
Chitin is the polysaccharide that makes up the outer exoskeleton of many insects. It is a fibrous polymer, that is made up of chains of modified glucose molecules. It is comparable in structure to cellulose, which makes up the plant cell wall. In function, it is more similar to keratin or collagen, although these are proteins.
Chitin is exclusively found in the arthropods, mollusks and fungi. It plays an important protective and structural role, giving organisms their tough outer exoskeleton or strong cell wall in the case of fungi.
