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EleoNora [17]
3 years ago
11

The law of conservation of energy states that energy cannot be destroyed or created. It can only change in form and move from pl

ace to place. An ATP molecule in an animal cell is used for energy.
Explain how the energy reached the ATP molecule from its original source.
Biology
1 answer:
statuscvo [17]3 years ago
8 0

Answer:yes

Explanation:

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Which of the following is homozygous dominant? a AA b Aa c aa
GarryVolchara [31]

Answer: a). AA

Explanation: Every trait is controlled by at least a pair of gene. Genes have different forms known as alleles. Alleles can be dominant or recessive. A dominant allele expresses itself in the presence of a recessive allele and masks the effect of a recessive allele. A recessive allele cannot express itself in the presence of a dominant allele and it's effect is masked by a dominant allele. Dominant alleles are usually written in upper cases such as A, T, while recessive alleles are usually written in lower cases such as a, t. The two alleles that determines a trait is called a genotype. A genotype can be homozygous if the two alleles are identical such as in AA or aa

and can be heterozygous if the two alleles are not identical such as in Aa, Tt.

6 0
3 years ago
A) Compare and contrast diffusion, passive transport (diffusion & facilitated), primary active transport and secondary activ
zheka24 [161]

Answer:

<u>Passive transport</u>: It does not need any energy to occur. Happens in favor of an electrochemical gradient. Simple diffusion and facilitated diffusion are kinds of passive transport.

<u>Simple diffusion</u>: molecules freely moves through the membrane.

<u>Facilitated diffusion</u>: molecules are carried through the membrane by channel proteins or carrier proteins.

<u>Active transport</u> needs energy, which can be taken from the ATP molecule (<u>Primary active transport</u>) or from a membrane electrical potential (<u>Secondary active transport</u>).

Explanation:

  • <u>Diffusion</u>: This is a pathway for some <em>small polar hydrophilic molecules</em> that can<em> freely move through the membrane</em>. Membrane´s permeability <em>depends</em> on the <em>size of the molecule</em>, the bigger the molecule is, the less capacity to cross the membrane it has. Diffusion is a very slow process and to be efficient requires short distances and <em>pronounced concentration gradients</em>. An example of diffusion is <em>osmosis</em> where water is the transported molecule.
  • <u>Facilitated diffusion</u>: Refers to the transport of <em>hydrophilic molecules</em> that <em>are not able to freely cross the membrane</em>. <em>Channel protein</em> and many <em>carrier proteins</em> are in charge of this <em>passive transport</em>. If uncharged molecules need to be carried this process depends on <em>concentration gradients</em> and molecules are transported from a higher concentration side to a lower concentration side. If ions need to be transported this process depends on an <em>electrochemical gradient</em>. The <em>glucose</em> is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.

<em>Simple diffusion</em> and <em>facilitated diffusion</em> are <u>passive transport</u> processes because the cell <u><em>does not need any energy</em></u> to make it happen.

  • <u>Active transport</u> occurs <em>against the electrochemical gradient</em>, so <u><em>it does need energy to happen</em></u>. Molecules go from a high concentration side to a lower concentration side. This process is always in charge of <em>carrier proteins</em>. In <u>primary active transport</u> the <em>energy</em> needed <em>comes from</em> the <em>ATP</em> molecule. An example of primary active transport is the <em>Na-K bomb</em>. In <u>secondary active transport</u>, the<em> energy comes from</em> the <em>membrane electric potential</em>.  Examples of secondary active transport are the carriage of <em>Na, K, Mg metallic ions</em>.
7 0
3 years ago
Researchers cross a corn plant that is pure-breeding for the dominant traits colored aleurone (C1), full kernel (Sh), and waxy e
olasank [31]

D) #recombinant=116+601+4+2+113+625=1462

   #nonrecombinant=2538+2708=5246

  RF=R/(N+R)=1462/6708=0.2

  E) I=1-Q

I-interference

Q-coefficient of coincidence

Q=O2Xo/E2xo(2xo-double crossovers)

O2xo=6

P=(distance from C1 to Sh/100)*(distance from Sh to Wx/100)

=(3.38/100)*(18.28/100)=0.006

E2xo=0.006*6708=40.248

Q=6/40.248=0.15

I=1-0.15=0.85

7 0
3 years ago
True/False. Multiple polypeptides joined together represents the tertiary level of protein organization.
bonufazy [111]

It is <u>TRUE</u> that multiple polypeptides joined together represents the tertiary level of protein organization.

6 0
2 years ago
Where does the energy come from to add a uracil to the 3' end of a transcript?
Xelga [282]
The hydrolysis of pyrophosphate from the approaching UTP atom. The term pyrophosphate is additionally the name of esters framed by the buildup of a phosphorylated organic compound with inorganic phosphate, concerning dimethylallyl pyrophosphate. This bond is likewise alluded to as a high-vitality phosphate bond.
3 0
3 years ago
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