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-BARSIC- [3]
3 years ago
5

Passive transport is the movement of materials across the cell membrane without the use of:

Biology
1 answer:
fomenos3 years ago
6 0

Passive transport is the movement of materials through the cell membrane without the use of energy.

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Research has indicated that during the inflammatory response to P. acnes, both the classical and the alternative complement path
UNO [17]

Answer:

The correct answers are options B, D and E.

Explanation:

One of the essential parts of the innate immune system is the complement system. This system performs an essential function in elevating the tendency of antibodies and phagocytic cells to eliminate the pathogens. There are three biochemical pathways, which instigate the complement system that comprises the classical, alternative, and lectin complement pathway.  

The fundamental activities of the complement system are opsonization, cell lysis, chemotaxis, and agglutination. The process of cytolysis takes place through the complement pathway by the generation of membrane attack complex in the raiding cells. The complement pathway also leads to inflammation.  

6 0
3 years ago
Suppose there are two homologous chromosomes. Each chromosome contains a single mutant allele in different parts of the chromoso
Harlamova29_29 [7]

Answer:

Cross overs can lead to formation of chromosome pairs that have no mutant allele.

Explanation:

Cross overs can lead to formation of chromosome pairs that have no mutant allele.

For example -

Suppose "X" is a mutant  allele and "x" is a mutant free allele.

Now when two homologous chromosomes contains a single mutant allele in different parts of the chromosome are crossed the following offspring are produced

X x

X XX Xx

x Xx xx

"xx" is a mutant free genotype.

Thus, crossing over can create a single mutation-free chromosome

8 0
2 years ago
What is the difference between active and passive transport across the plasma membrane?
Oduvanchick [21]
Passive is when materials travel or move across some cell membranes that doesn't use cell energy. 

Active is the meaning of a movement that crosses across some cell membranes that requires the use of cell energy.

Answer:
The answer is that passive doesn't use cell energy but active uses cell energy.
:):):):):):):):):)):))):):):):))::) 


8 0
3 years ago
The mitotic spindle and microtubules were not present in the mitosis models; describe their process throughout the steps of mito
Alex777 [14]

Answer:

Following are the solution to this question:

Explanation:

In a spindle in prophetic (mitotic apparatus) spindle, pulley and cellular membranes form at the kinetochore of metaphase genes intended besides separation of anaphase daughter chromosomes.

Even though the cycle of creation of the cells move towards opposite poles, microtubules gradually form a network between them, and its duplicate chromosomes would be later removed.

8 0
3 years ago
Closed systems exchange energy, but do not exchange what​
andrew11 [14]

Answer:

matter

Explanation:

"In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings"

5 0
3 years ago
Read 2 more answers
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