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Leto [7]
2 years ago
6

GIBING BRAINLIEST, PLEASE ANSWER FOR 40 PTS, DUE IN 30 MINUTES 4 STEM CLASS!!!

Biology
2 answers:
melamori03 [73]2 years ago
8 0

Answer:

Sorry kid my middle school day re long gone but ummm... don't do drugs

:)

Explanation:

ANEK [815]2 years ago
6 0
Did you get it done already?
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What three distinct elements make up the cytoskeleton in eukaryotic cells?
natita [175]

Answer:

Microfilaments, Intermediate filaments and microtubules

Explanation:

Three distinct elements make up the cytoskeleton in eukaryotic cells are:

1. Microfilaments or actin filaments which are composed of actin proteins. The functions of those filaments are: muscle contraction (myosin heads move “walk” on actin filaments), the movement of the cell,  intracellular transport, maintaince of the cell shape..

2. Intermediate filaments which can be made of vimentins, keratin, lamin, desmin… Their functions are: the maintenance of cell shape, anchoring organelles, structural components of the nuclear lamina, cell-cell and cell-matrix junctions…

3. Microtubules are filaments polymers of alpha and beta tubulin. Their roles are in intracellular transport (associated with motor protein dyneins and kinesins),  formation of the axoneme of cilia and flagella, formation of the mitotic spindle.

8 0
3 years ago
Why are ecological pyramids shaped as pyramids?
REY [17]
The answer is A
This is because 90% of energy is lost when we go up one trophic level. This means that even the the consumers tend to be larger in size, they are fewer in number and need to eat more in order to sustain themselves.
5 0
4 years ago
Read 2 more answers
BALANCE THE FOLLOWING CHEMICAL REACTION
Tomtit [17]

Answer:

Hey ! The number of atoms in the reactants must be equal to the number of atoms in the products so

CCl4 ~> C + 2 Cl2

7 0
4 years ago
Which statement explains the difference between multiple alleles and polygenic inheritance?
sergeinik [125]

Answer:

B.  Multiple allele means more than two forms of the same gene in the population and polygenic inheritance means more than one gene contributes to the phenotype of a trait.

Explanation:

  • Multiple alleles are an alternative form of allies and can occupy the same gene ad only two of them can be found in the same organism. Such as the ABO blood group.  
  • A polygenic or a multiple gene inheritance is a hypothetical gene that s often difficult to characterize and traits control a multiple of genetic loci, they are relatively small and interchangeable.
6 0
3 years ago
What is the difference between self-pollination and cross-pollination?
Serhud [2]

The correct answer is that during cross-pollination the pollen grains are carried from one plant to another plant. During self-pollination, the pollen and ovules are from the same plant.

In self-pollination, the pollen from the anther is deposited on the same flower's stigma, or on the stigma of another flower of the similar plant. In comparison, out-crossing or cross-pollination results in greater genetic diversity as the pollen grains and ovules are obtained from different plants.  


5 0
4 years ago
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