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slega [8]
3 years ago
14

What are materials that need to enter and exit a cell?

Biology
1 answer:
kykrilka [37]3 years ago
5 0
Obviously materials<span> need to be able to </span>enter and leave cells<span>, and there are five main methods by which </span>substances<span> can move across a </span>cell<span> membrane: Lipid Diffusion. Osmosis. Passive Transport.</span>
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State how the eye us adopted to its function
MrMuchimi
Light enters the eye through the cornea, the clear, curved layer in front of the iris and pupil. ... By changing its shape, the lens focuses light onto the retina. Through the action of small muscles (called the ciliary muscles), the lens becomes thicker to focus on nearby objects and thinner to focus on distant objects.
3 0
3 years ago
In cats grey color (G) is dominant to white color (g). If a white female has kittens with a heterozygous male, and the mother is
Scrat [10]

Answer:

Rounding down to the nearest whole number, 5  Kittens will be white.

Explanation:

<u>Available data:</u>

  • grey color (G) is dominant
  • white color (g) is recessive
  • white female, gg
  • heterozygous male, Gg
  • 9 Kittens

Cross:

Parental)      Gg     x     gg

Phenotype) Grey      White

Gametes)    G    g      g     g

Punnet square)

                             G             g

                      g    Gg          gg

                      g    Gg          gg

F1) Genotypes:

     1/2 = 50% will be Gg

     1/2 = 50% will be gg

     Phenotypes:

    1/2 = 50% will be Grey (Gg)

    1/2 = 50% will be white (gg)

To calculate the number of kittens that will be white, we need to consider the proportions of cats that will be white in the F1 and that the total number of kittens is 9. So

100% of the progeny ------------------------------- 9 kittens

50% of the progeny----------------------------------X = (50 x 9)/100 = 4.5 kittens ≅ 5  Kittens  

A cat can not have 4.5 kittens, so we must round down to the nearest whole number. 4.5 ≅ 5  Kittens    

3 0
2 years ago
The net annual primary productivity of a particular wetland ecosystem is found to be 6,000 kcal/m2. If the
Marizza181 [45]

Answer:

The net annual primary productivity of a particular wetland ecosystem is found to be 8,000 kcal/m2. If respiration by the aquatic producers is 12,000 kcal/m2/year

Gross primary productivity in a region of tropical forest is 1,200 kcal/m-Tyr. In this ecosystem, producers are. 25% efficient. 16,000 kcal/m²/yr

8 0
2 years ago
The atlantic cod (gadus callarias) is a fish which lays about 5 000 000 eggs in its lifetime. On average, only two of these eggs
lozanna [386]

The atlantic cod (gadus callarias) is a fish which lays about 5 000 000 eggs in its lifetime. On average, only two of these eggs survive to become adult cod. This promote evolution because the environment selects the most evolved animals to survive that environment.

<h3>What is the evolutionary process?</h3>

Evolutionary processes aim, therefore, to generate greater adaptation of species in an environment. When new species of organisms are formed from gradual changes in preexisting species.

So although there are several eggs initially only those that survived the environment are able and evolved to reproduce, so the evolution of species is carried out.

See more about evolution of species at brainly.com/question/13194079

#SPJ12

3 0
1 year ago
HELP ME OUT PLS!!!!!!!!!!!!!!!!!!!
stiks02 [169]
13 a
14. At which location would a person experience the longest number of daylight hours answer B
6 0
2 years ago
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