BIOLOGY HIGH SCHOOL

What is the benefit of using a shortcut in a reaction between two chemicals

Answers

Answer 1
Answer:

The benefit of using a shortcut in a reaction between two chemicals is that sings of a chemical change will still be found. We will still get a new substance and its chemical and physical properties will differ from those of the original substance.


I hope it helps, Regards.
Answer 2
Answer:

A reaction with a shortcut would yield more chemical output.

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Which is the most likely function of a group of cells that contains a higher number of mitochondria? why?respiration
transpiration
fermentation
photosynthesis

Answers

respiration

Because much energy is to be used to execute this specific movement or voluntary elicitation. Respiration requires much energy and ATP thus much mitochondria is needed. Cells with mitochondria are maximize to perform at their very best and deliver as much ATP and energy in the process. 

Which factor has the least effect on the strength of an electromagnet? A. The length of the connecting wires
B. The number of coils of wire.
C. The material of the core.
D. The strength of the battery
​

Answers

The length of the connecting wire has the least effect on the strength of an electromagnet.

What factors influence the strength of an electromagnet?

  • An electromagnet is a type of magnet where an electric current creates the magnetic field. The wire that makes up an electromagnet is typically twisted into a coil.
  • A magnetic field is produced by a current flowing through the wire and is concentrated in the hole, designating the centre of the coil.
  • The type of core material, the strength of the current flowing through the core, the number of wire turns on the core, and the size and form of the core are all factors that determine an electromagnet's strength.
  • Stronger magnetic fields can be created by using alloys like alnico, which is an alloy of aluminium, nickel, and cobalt.

The strength of the electromagnet's magnetic field increases when:

(a) the current increases

(b) the number of turns increases

(c) the wire is wound so that the length of the electromagnet is reduced

(d) Soft iron core inserted into magnetic coil

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Answer:

The answer is A. The length of connecting wires.

Explanation:

I took the quiz.

Choose the correct answer. -lactose is Glcα1-4Glc -maltose is Glcα1-4Glc -sucrose is Glcα1-2Glc -cellobiose is Galβ1-4Glc

Answers

The answer is lactose is Glcα1-4Glc.

Lactose is a disaccharide sugar derived from galactose (Glca) and glucose (Glc) which form a β-1-4 glycosidic linkage (Glca1-4Glc).

An anthropologist finds a fossil that is 4 million years old. Its pelvis suggests it walked upright. Which species could the specimen belong to?Australopithecus africanus
Australopithecus afarensis
Homo habilis
Homo erectus

Answers

Australopithecus afarensis is hominin discovered in the Afar region in Ethiopia. He lived between 4 and 3 million years ago. The most famous fossil is named Lucy. Australopithecus africanus was dated as living between 3.3 and 2 million years ago. Homo habilis is much younger: 2.1 - 1.5 million years ago. Homo erectus is the youngest ( from 1.9 million - 70,000 years ago ). Answer: The specimen could belong to B ) Australopithecus afarensis.
australopithecus afarensis

Which of these best describes the role of helicase and DNA polymerase in DNA replication? *A. DNA polymerase "unzips" the DNA strand, while helicase brings in new strands of DNA to match the old strands

B. Helicase attaches new nitrogen bases to the ends of old DNA strands, while DNA polymerase breaks down unused DNA strands

C . DNA polymerase breaks down the old strand of DNA after a new one has been replicated, while helicase connects the two DNA strands together

D. Helicase "unzips" the DNA strand, while DNA polymerase brings in new strands of DNA to match the old strands

Answers

'Helicase "unzips" the DNA strand, while DNA polymerase brings in new strands of DNA to match the old strands.' best describes the role of helicase and DNA polymerase in DNA replication. The correct option is d.

Helicase is essential for DNA replication because it "unzips" the double-stranded DNA molecule. In order to separate the two strands and create a replication fork this process involves severing hydrogen bonds between the base pairs. On the other hand, DNA polymerase is charged with the vital task of creating new DNA strands.

It does this by incorporating complementary nucleotides into the template strands already present. This maintains genetic fidelity by ensuring that the newly formed strands mirror the original ones. The precise duplication of genetic information which is necessary for cell division and inheritance, depends on the interaction between the unwinding action of the helicase and the strand-building activity of DNA polymerase.

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The answer is D. Hope this helped!

A plant pigment that absorbs sunlight

Answers

the answer i believe is Chlorophil but don't quote me on that
chlorophyll is the green pigment found in the chroloplast that absorb sunlight 
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