Answer:
Explanation:
The cell membrane, also called the plasma membrane, has the following characteristics:-
It is present as the outermost layer in animal cells and lies below the cell wall in plant cells.
The cell membrane surrounds the cytoplasm of living cells, physically separating the intracellular components from the extracellular environment.
The cell membrane is semi-permeable, ie, it allows some substances to pass through it and does not allow others.
It is thin, flexible and a living membrane, which consists of a lipid bilayer with embedded proteins/
The cell membrane has large content of proteins, typically around 50% of membrane volume. These proteins are important for cell because they are responsible for various biological activities.
Answer:
a. The spindle apparatus is present in cells undergoing <u>mitosis and meiosis. </u><u> </u>the spindle is crucial for chromosome sorting.
b. Chromosome replication occurs just prior to <u>mitosis and meiosis I. </u> DNA needs to be copied during S fase to have enough DNA and transfer it to the daughter cells.
c. The cells resulting from <u>mitosis </u>in a haploid cell have a ploidy of n.
Mitosis produces identical cells.
d. The cells resulting from <u>meiosis II </u>in a diploid cell have a ploidy of n. meiosis is the only process that causes chromosome reduction (assuming no errors).
(e). Homologous chromosome pairing regularly occurs during <u>meiosis I.</u> Each daughter cell needs 1 chromosome of each kind
(f). Non-homologous chromosome pairing regularly occurs during <u>none</u>. This is kind of an error.
(g). Physical recombination leading to the production of recombinant progeny classes occurs during <u>Meiosis I </u>
(h). Centromere división occurs during meiosis II and mitosis
(i) Non-sister chromatids are found in the same cell during <u>meiosis II</u>
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Answer:
b. earth was formed from a cloud of gas and dust spinning and moving some distance from the sun.
Answer:
id id id didk id idkd id kd id kd
Explanation:
- Question -
A _________ scan involves taking a number of X-Rays of a particular section of a person's Body or Brain.
- Answer -
Computerized Tomography (CT) Scan
- The Wolf -
