Which statement indicates what the fossil record suggests about evolution on Earth?

A student was studying osmosis. She performed an investigation in which she soaked sample cells in a sucrose solution. She weigh

stiks02 [169]

B!!!!! Is ur answer not sure if I’m right tho!

7 0

3 years ago

Which metabolic reaction is found in both cellular respiration and in the light reactions of photosynthesis?

Elina [12.6K]

Electron transport chain is found in both cellular respiration and in the light reactions of photosynthesis.

<h3>What is Electron transport chain ?</h3>

An electron transport chain is a collection of protein complexes and other molecules that couple protons across a membrane with the transfer of electrons
from electron donors to electron acceptors via redox reactions. a group of proteins in the mitochondria's inner membrane.

The oxidative phosphorylation process, also known as the electron transport chain.
Is a collection of four protein complexes that combine redox events to produce an electrochemical gradient that results in the production of ATP.
Both photosynthesis and cellular respiration take place in mitochondria.

Learn more about Electron transport chain here:

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6 0

2 years ago

Moving water has been utilized in hydroelectric plants to _________________, but in recent years negative environmental conseque

Aliun [14]

The correct answer is D. Generate electricity.

Explanation

A hydroelectric plant is a construction in which, as its name implies, the movement of water is used to generate electricity. These are located in the cause of a river, where they dam the river water, and allow it to follow its current through a complex of tunnels where the water acquires high pressures. Later, the water meets turbines that are moved by the energy that water brings, which generates that this synthetic energy is transformed into electricity. Therefore, the option that best completes the sentence of the question is D. Moving water has been used in hydroelectric plants to generate electricity, but in recent years negative environmental consequences have been known. The environmental damages of hydroelectric plants can be alteration of terrestrial, aquatic ecosystems and their biodiversity, it also generates changes in the river regime, alteration of natural flood cycles.

3 0

3 years ago

3 examples of food chain that exists in nature

-Dominant- [34]

this should help answer your question

5 0

4 years ago

Read 2 more answers

assume that Q is the frequency of the recessive gene R expressing y color piece and that in a isolated area 68 plants with red a

Oksi-84 [34.3K]

Explanation:

Homozygous individuals have two copies of the same allele for a gene. Homozygous dominant individuals carry two copies of the dominant allele, while homozygous recessive individuals carry two copies of the recessive allele.

Further Explanation:

DNA sets contain genes that may have different forms named alleles. DNA, which is the genotype, is transcribed into mRNA and later translated into amino acids which are connected together by rRNA to form proteins which constitute the phenotype of an organism. DNA sequence mutations form new allles, impacting the resulting mRNA, and thus the encoded protein. Within species, there may be adaptation, along with genetic drift, preferential breeding, and natural selection.

Within a population certain alleles are fixed over time. In Hardy-Weinberg-allelic frequencies, the equilibrium for a particular gene is not undergoing evolution, being stable for several generations. Mutations, during this time affect the corresponding mRNA, and thus the encoded protein. Evolution may occur within populations, along with genetic drift, selective mating, and natural selection.

Over time, certain alleles become fixed within a population. Equilibrium for a specific gene is not undergoing evolution in Hardy-Weinberg-allelic frequencies are stable for several generations. During this period, mutations do not occur within the population, this is shown as

$p^{2} + 2pq +q^{2} = 1$ ....(eqn i)

where...

p represents the dominant allele frequency

q represents the frequency of the recessive allele

q^2 = the genotypic frequency of the homozygous recessive

p^2= the genotypic frequency of the homozygous dominant

2pq= frequency of the heterozygous genotype

and simply p+q= 1 ...(eqn ii)

The allelic freq. of r is denoted by q and the allelic frequency, R is denoted by p...

The total number of individuals= 32+ 68= 100

Thus q= √ $q^{2}$ = homozygous recessive individuals (white flowers)

Since there are 32 white flowering plants , freq rr= 32÷ 100= 0.32

...thus $q^{2}$ =0.32

and q= √ $q^{2}$ = √0.32= 0.566

Learn more about mutations at brainly.com/question/4602376

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

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8 0

4 years ago