I believe the answer can be C, correct me if i’m wrong
Answer:
1. import and export of nutrients and wastes
2. cell signaling
3. cell recognition
4. cell growth and motility
Explanation:
Plasma membranes are selectively permeable which means it only allows selective molecules to cross through it. So the plasma membrane helps in the import and export of nutrients by simple diffusion, facilitated diffusion or through active transport.
There are membrane protein embedded in the plasma membrane which have different role. Some help in cell signaling like GPCR, some help in cell recognition and some act and transporter proteins.
The plasma membrane is also responsible for cell growth and motility because it allow the raw materials and signals to pass through it which is required by the cell to metabolize and grow. So 1,2,3,4 is the correct answer.
Answer:
D. All cells must be reproduced by another cell.
Explanation:
The cell theory has a couple key components, which are as follows:
#1. Cells are the basic unit of life.
#2. Cells have hereditary data that is passed down to their offspring.
#3. All cells come from preexisting cells.
#4. All organisms, both unicellular and multicellular, are made of one or more cells.
#5. Energy flows through cells.
#6. All cells have a similar composition.
So the DNA can be copied to make more of themselves.<span />
The Telophase 2 is the fourth step or process during Meiosis (cell
division). During Telophase 2, a nuclear envelope forms around each set of new
chromosomes. In this stage, cytokinesis occurs, which is responsible for
producing four daughter cells each with a haploid set of chromosomes. During
the crossing-over phase some chromosomes are observed to have segments that
have recombined with the original parent chromosomes.
<span>
When the phase is over, the two
cells are now finally separated and their nuclear membranes are fully formed
causing the meiosis cell division to be completed.</span>
