Hey guys plz help me with these questions I have to submit these questions answer by tommorow in school
Answers
Answer:
CELL MEMBRANE: The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions.
One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
NUCLEUS: The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.
CYTOPLASM: The cytoplasm acts as a buffer and protects the genetic material of the cell and also the cellular organelles from damage caused due to movement and collision with other cells. Cellular respiration begins in the cytoplasm with glycolysis.
Q.2
1. With attachment
2. Plant cell is surrounded by rigid cell wall whereas animal cells do not have cell wall. Presence of large vacoule in plant cell, which is small in animal cell. Plant cells are larger than animal cell. Plant cells have plastids whereas animal cells do not have plastids.
3. Phloem is the vascular tissue in charge of transport and distribution of the organic nutrients. The phloem is also a pathway to signaling molecules and has a structural function in the plant body.
4. IN ATTACHMENT
Q.3
1. cytoplasm
2. fluid - connective
3. xylem
4. dendrites
5. ligament
6. connective
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Answer:
a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Description
DescriptionNeutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.
Connective tissue: A material made up of fibers forming a framework and support structure for body tissues and organs. Connective tissue surrounds many organs. Cartilage and bone are specialized forms of connective tissue. All connective tissue is derived from mesoderm, the middle germ cell layer in the embryo.Major functions of connective tissue include: 1) binding and supporting, 2) protecting, 3) insulating, 4) storing reserve fuel, and 5) transporting substances within the body. Connective tissues can have various levels of vascularity. Cartilage is avascular, while dense connective tissue is poorly vascularized.
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