E. Weathering - Sometimes the Earth's crust is forced to pull apart into smaller sections or pushed back together. Because of the constant movement, rocks underneath are brought up on the surface. This movement of rocks is referred to as uplift. When a metamorphic rock undergoes this process, it may be subjected to constant wear and tear. The rock will weather and may crumble into smaller pieces.
Answer:
The correct answer is option (d) "both b and c".
Explanation:
Experimental model organisms used in scientific investigations have to fulfill certain criteria in order to be useful in the laboratory. Two of the desired characteristics are being able to reproduce quickly and with enough number of offspring in order to study genetic behaviors. <em>Arabidopsis thaliana</em> characteristics of being able to reproduce in 8–10 weeks and producing thousands of offspring per plant (because it can produce thousands of seeds) makes it a model flowering plant for experimental studies.
Answer:
The statement that is false is C 'it protects the cell in a hypertonic environment'.
Explanation:
The cell wall has no role in protecting a cell in any of the hypertonic or hypotonic environments. In an hypertonic environment, water will flow out of the cell due to the concentration gradient developed and this phenomenon cannot be stopped by any kind of cell wall.
The gram positive cell wall is involved in maintaining the shape of the cell. Studies have also shown the gram- positive cell wall to be sensitive towards lysozyme. Techoic acids are actively present in a gram-positive cell wall. Also, many researches have explained that gram- positive cell wall is sensitive to the antibiotic penicillin. Hence, the statement that is not correct is C "it protects the cell in a hypertonic environment."
These are the ones i was taught
1. molecule transport
2. signal receptors
3. intercellular junctions
4. cell to cell communication and recognition
5. gives the cell structure
6. protects the cell
7. acts as enzymes
