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grigory [225]
4 years ago
9

Which statements describe the cell membrane? Check all that apply. The cell membrane is very selective. The cell membrane lets a

nything enter the cell. The cell membrane lets anything leave the cell. The cell membrane is a protective layer surrounding a cell. The cell membrane allows waste to leave the cell.
Biology
2 answers:
hoa [83]4 years ago
4 1

The correct answers are A. The cell membrane is very selective, D. The cell membrane is a protective layer surrounding a cell, and E. The cell membrane allows waste to leave the cell.

Explanation:

The cell membrane is a membrane composed of lipids and proteins that surround and define every cell. This membrane had an important role because it regulates the substances and particles that enter and exit from the cell. The cell membrane is very selective as just certain substance can go out an in; for example, the cell membrane allows oxygen to enter into the cell and waste to leave the cell as this preserves the balance in the cell and it is necessary. Moreover, the cell membrane protects the cell from outside isolating it and avoiding nocive particles enter. According to this, it is true this structure is very selective, it acts as a protective layer and also it allows waste to leave the cell.

Dashi BOI
3 years ago
ur wrong
Sever21 [200]4 years ago
3 0

Answer:

The three statements or tenets of the cell theory are: All living beings are made up of cells. Cell is the most basic unit of life. All cells must come from pre-existing cells.

Explanation:

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Explain how the lack of genetic diversity found in populations of endangered species might hinder their recovery
Lelu [443]

Hi

The term lack of genetic diversity for a particular population refers to the fact that there are less number of alleles and less range of phenotypes and traits like (height, skin, color, ability to cope disease, ability to change metabolism as per requirement etc).

If we talk about endangered species, they are the specie which are prone to be extinct in near future because their population is very less in number. There can be multiple reason of becoming endangered for a population such as over hunting etc.

So when we say that an endangered population is genetically less diverse, it means that there are further difficulties that hinder their recovery.

For example: If a calamity stucks, all organisms that are already low in number and also genetically less diverse, so they cannot cope with calamity and get extinct. However, if this population is genetically more diverse, some organisms may survive some may die, and those which survive can recover the population. That is why it becomes more difficult to recover an endangered specie if it is genetically less diverse. The more the genetic diversity, better it is for specie.

Hope it help!

6 0
3 years ago
Explain how genetic information of aminio acids support evidence of common ancestery and diversity​
zloy xaker [14]

Answer:

DNA and genetic code

Explanation:

Comparing DNA can show how species are related.

3 0
3 years ago
A life-form from another universe is found to have nucleic acid which includes six different bases - R,S,T,X,Y and Z. The percen
nalin [4]

R, S, and T always have the same percentage composition, while X, Y, and Z always have the same percentage composition. Chargaff's rule is then a viable theory that can be used in this situation.

  • The DNA of any species of any organism must have a 1:1 stoichiometric ratio of the purine and pyrimidine nucleotides, according to Chargaff's principles.
  • More specifically, the ratio of guanine and adenine to cytosine and thymine must be the same. This pattern is present in both the strands of the DNA.
  • The formula comes as A + G = T + C = 1
  • In this universe there are six base pairs R,S,T,X,Y and Z. composition of R,S and T is always same thus these can be considered the purines.
  • The percentage composition of X,Y and Z is always the same thus these can be considered the pyrimidines.
  • applying Chargaff's rule to these bases:

R + S + T = X + Y + Z

= 1:1

Thus, the nucleic acid will contain six base pairs where bonds are formed between RX, SY and TZ.

learn more about Chargaff's rule here:brainly.com/question/12148299

#SPJ1

4 0
2 years ago
List the following terms in order from smallest to largest.
AveGali [126]

ecosystem, Biome, biosphere, idk where habitat goes sorry

5 0
3 years ago
Animals that advertise their poisonous or dangerous qualities use a defense called ________ mimicry.
astraxan [27]
The correct answer is Batesian. Animals that advertise their poisonous or dangerous qualities use a defense is called Batesian mimicry. Batesian is basically a mimicry form that a harmless species evolved into some warning for a harmful one directly on the predators.
7 0
3 years ago
Read 2 more answers
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