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ipn [44]
3 years ago
12

K-selected species are also called equilibrium species. a. True b. False

Biology
1 answer:
olga_2 [115]3 years ago
5 0
The answer is True. These species do well in stable environment. They have a long life span and produce few offsprings in their lifetime. Their offspring are large and more energy is invested in the individual rather than the numbers. Individuals can reproduce more than once in their lifetime unlike r-selected species that reproduce once.
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Cell biologists studying the mobility of plasma membrane proteins fused mouse and human cells together, creating a heterokaryon.
m_a_m_a [10]

Answer: Fluorescence microscopy

Explanation:

A protein is substance that is the essential constituent of living cells because it forms part of its structure. T<u>hey are also found in plasma membrane</u>, where they assist substances to cross the membrane.  Proteins can be:

  • <u>Integral</u>: permanently attached within the plasma membrane.
  • <u>Transmembrane</u>: it spans the entirety of the cell membrane.
  • <u>Peripheral</u>: are only temporarily associated to the membrane.

Some integral proteins can act as cellular receptors. Other proteins are responsible for cell adhesion (binding of a cell to another cell or to a surface). On the outside of the cell membranes, attached to other proteins, are the carbohydrate chains that act as labels identifying the type of cell.

<u>A heterokaryon is a multinucleate cell and in this experiment the scientists fuse a human cell and a mouse cell, each of them will have their own proteins.</u> At first, the human and mouse proteins where found in separated halves of this heterokaryon. But <u>after a while, those proteins where mixed and could no longer be identified</u>.

A fluorescent chemical called a fluorophore is able to be absorb light of specific wavelengths and then emit light of longer wavelengths. The proteins can be modified and marked with different colored fluorophores to detect them, even if they are mixed in the heterokaryon. <u>Then, they can be seen with a Fluorescence microscopy, to identify them through different colors</u>.  

3 0
3 years ago
Mom is A+. She has 2 children, one is O+ and the other is B-. (Note: Rh+ is RR or Rr, and Rh- is rr) What are the father’s possi
mezya [45]

Answer:

  • The blood group of the father must be B.
  • The genotype of blood group would be I^{B}i.
  • The Rh factor of the father can either be positive or negative.
  • Thus, the genotype of Rh factor of father would be either Rr or rr.

Rh factor:

The phenotype of the mother Rh factor is positive. Thus, she can have Rr or RR as her genotype as positive is a dominant trait.

If the genotype of the mother is RR then all the offspring would be positive for Rh factor. However, one of the offspring is Rh negative, that means the mother must be heterozygous that is, Rr.

The genotype of the father can either be Rr or rr in order to produce offspring with positive as well as negative Rh.

Blood group:

The blood group of the mother is A. Thus, the genotype can either be I^{A}I^{A} or I^{A}i.

However, the blood groups of the children are O+ and B+.

Thus, the genotype of the mother must be heterozygous that is I^{A}i.

The blood group of the father must be B with genotype I^{B}i in order to produce offspring with blood group O and B.

6 0
3 years ago
How is a digestive system like a “disassembly line”, or an assembly line that acts to take apart a product instead of manufactur
malfutka [58]

Answer:

A digestive system uses enzymes to break down your food. The walls of the intestines absorb nutrients and vitamins, while the unused food gets processed to be removed from your body (Feces).

Explanation:

5 0
4 years ago
Which type of growth can occur only when a population has unlimited resources?
just olya [345]
Answer is exponential!

Explanation: if there are unlimited resources, there is no need for competition. If there’s no competition, there’s no reason for population rates to go down.

Hope this helps!! (Brainliest maybe?)
5 0
3 years ago
Read 2 more answers
Hurry plz. no wrong answer please.
Sonbull [250]
<span>the appearance of a mineral that can vary according to the impurities in that mineral as well as other factors such as -----COLOR------

I hope this Helped :)
</span>
3 0
4 years ago
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