When two or more elements combine, they form a(an)

Why do people say that the sun set when it doesn’t

makkiz [27]

The sun stays in its position at the center of our solar system. it doesn't rise and set. But is appears to rise and set because of the earths rotation on its axis. As the earth rotates toward the east it looks like the sun is moving west

8 0

2 years ago

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The following are required steps in the sliding filament theory of muscle contraction:

lions [1.4K]

I would agree with your answer of C. As there would need to be calcium to start with and they seem to come from the sarcoplasmic reticulum

4 0

2 years ago

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Cellular respiration converts the energy of fuel molecules to a form of energy that a cell can use to perform work. In an averag

Lesechka [4]

Answer:

A person eats one hard-boiled egg and digests the egg fully. During cellular respiration MOST of the Calories in the egg is converted to heat.

3 0

2 years ago

Most black bears (Ursus americanus) are black or brown in color. However, occasional white bears of this species appear in some

Sphinxa [80]

Answer and Explanation:

The number of observed individuals:

AA 42

AG 24

GG 21

Total number of individuals, N= 87 = 42 + 24 + 21

Allelic frequencies:

f(p) = (2 x AA + AG)/ 2 x N

f (p)= (2 x 42 + 24) /2 x 87

f (p) = (84 + 24) / 174

f (p)= 108 / 174

f (p) = 0.62

f (q) = (2 x GG + AG)/2 x N

f (q) = (2 x 21 + 24 )/2 x 87

f (q) = (42 + 24)/ 174

f (q) = 66/174

f (q) = 0.38

p + q = 1

0.62 + 0.38 = 1

The expected genotypic frequency:

F (AA)= 0.62 ² = 0.3844

F (AG) = 2 x A x G = 2 x 0.62 x 0.38 = 0.4712

F (GG) = 0.38 ² = 0.1444

AA + AG + GG = 0.3844 + 0.4712 + 0.1444 = 1

The number of expected individuals:

AA= (0.62)² x 87 = 0.3844 x 87 = 33.44

AG= (0.4712) x 87 = 40.99

GG= (0.38)² x 87 = 12.563

Total number of expected individuals = 33.44 + 40.99 + 12.563 = 87

Chi square= sum (O-E)²/E

AA= (O-E)² /E

AA=(42 - 33.44) ² / 33.44

AA= 2.2

AB= (O-E)² /E

AB= (24 - 40.99)²/ 40.99

AB=7.04

BB=(O-E)² /E

BB= (21-12.563)²/12.563

BB= 5.66

Chi square= sum ((O-E)²/E) = 2.2 + 7.04 + 5.66 = 14.9

Degrees of freedom = genotypes - alleles = 3 - 1 = 2

p value less than 0.05

There is enough evidence to reject the nule hypothesis. The genotype frequencies are not in equilibrium.

5 0

3 years ago

A cell with a diploid number of 24 undergoes MITOSIS, how many chromosomes are in each daughter cell?

GalinKa [24]

Answer:12.

Containing two complete sets of chromosomes, one from each parent.

Explanation: Once mitosis is complete, the cell has two groups of 46 chromosomes, each enclosed with their own nuclear membrane. The cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.

4 0

2 years ago

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￼￼When two or more elements combine, they form a(an)

When two or more elements combine, they form a(an)