The limitations of cell size are:
1) Surface area to volume ratio
2) Nucleo cytoplasmic ratio
3) Fragility of cell membrane
What are the cause of limitations on cell size?
The need for a surface area of sufficient area to allow the cells function→.
→If the surface area of cell increase volume increase to the cube of the linear increase.
→ Nuclie contains information needed for protein synthesis . Some cells reduce this limitation to increase the no. Of nucleus called multinucleated.
Examples are muscle cells.
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The suggested set of activities for the corresponding principles regarding the Programs and teachers is explained below.
<h3>How to explain the information?</h3>
1. Programs and teachers engage families in ways that are truly reciprocal.
- Programs and families can benefit from shared resources and information.
- Teachers seek information about children’s lives, families, and communities.
2. Programs invite families to participate in program-level decisions and advocacy efforts.
- Programs invite families to actively participate in making decisions about the program itself.
- Programs also invite families to advocate for early childhood education in the wider community.
3. Programs invite families to participate in decision-making and goal-setting for their children.
- Programs invite families to actively take part in making decisions concerning their children’s education.
- Teachers and families jointly set goals for children’s education and learning both at home and at school.
4. Programs provide learning activities for the home and in the community.
- Programs use learning activities at home and in the community to improve each child’s early learning.
5. Programs implement a comprehensive, program-level system of family engagement.
- Programs institutionalize family engagement policies and practices and ensure that teachers, and other staff receive the supports they need to fully engage families
6. Teachers and programs engage families in two-way communication
- Strategies allow for both school- and family-initiated communication that is timely and continuous.
- Conversations focus on a child’s educational experience as well as the larger program.
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Answer:
false
Explanation:
Mars has no rings. the only planets that do are Jupiter, Saturn, Neptune, and Uranus
... termed "hypotonic," meaning less solids (or more diluted) than inside the cell. For fluid movement in/out of cells, water will diffuse (via osmosis) from the hypotonic solution to the hypertonic one, assuming a permeable barrier (i.e. cell membrane) allows it. With this case, water will flow into the cell from outside.
Answer:
The options
A)Damage to cellular mitochondria
B)Increased ATP levels
C)Activation of the p53 protein
D)Apoptosis
The CORRECT ANSWER IS D
D)Apoptosis
Explanation:
The extrinsic pathway of apoptosis includes extracellular signaling proteins which adhere to cell surface molecules known aa death receptors which in turn activates apoptosis.
The aftermath activates endonucleases prompting division of DNA and ultimately cell death.
Apart from the TNF and Fas ligand, primary signaling molecules also promotes the extrinsic pathway, examples of such are the TNF-related apoptosis-inducing ligand (TRAIL); the cytokineinterleukin-1 (IL-1); and lipopolysaccharide (LPS), the endotoxin located in the outer cell membrane of gram-negative bacteria while the activation of the p53 protein, and decreased ATP levels in the intrinsic pathway results in DNA damage.
