BIOLOGY HIGH SCHOOL

For glycolysis to produce ATP when no oxygen is present, it is necessary for cells to convert _____ to _____.A. ATP to NAD+
B. ATP to ADP
C. NADH to ATP
D. NADH to NAD+

Answers

Answer 1
Answer: The answer is D. NADH to NAD+

When no oxygen is present, anaerobic respiration occurs.It is the only way to produce ATP in this condition.NAD+ is necessary because it is converted into NADH and at the same time ADP is converted to ATP in the reaction of pyruvate synthesis from glucose.Therefore, NADH must be converted to NAD+ in order to have NAD+ always present in the cell.

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A teacher performs a demonstration of cellular transport by placing a raisin in pure water. After 24 hours, the students check the raisin and find that it has swollen and has a greater mass than before it was placed in the water.

Answers

Answer:

Explanation: it will swell after 24 hrs

Plants grow taller as a result of which of the following?Adaptative growth



Primary growth



Secondary growth

Answers

I'm pretty sure it's primary growth. I might not have studied this type of biology yet, but secondary growth would definitely not be the answer.

What is the difference between normal and sickle hemoglobin at the DNA, RNA, and protein (amino acid) level?

Answers


Sickle hemoglobin is a genetic disease caused by a point mutation in one base. Thus, DNA difference is in nucleotide sequence  Changed DNA sequence is then transcribed into RNA, which now contains GUG instead of GAG. This changed RNA sequence is translated into misformed protein containing valine instead of glutamine.

The difference between normal and sickle hemoglobin at the DNA, RNA, and protein is that a sickle hemoglobin at the DNA is a result of a point mutation from one base. The RNA in a sickle hemoglobin changes from GAG to GUG, and the protein (amino acid) level changes from GLU to Val). Sickle cell is a genetic disorder, which is produced by a change in the nucleotide progression that codes for a protein. In this example, sickle cell is produced by one single nucleotide being changed for another (so, instead of the DNA being AATTGC, it would be AATAGC).

Which kingdom(s) include organisms that are autotrophic or heterotrophic?

Answers

Kingdom Fungi. Mostly are single celled bacteria, they emit sunlight by means of photosynthesis that allows them to make food for themselves and also they have another food serve except for the sunlight and eats some single cell organism and that would call them as heterotrophic

What causes the day/night cycle of Earth?Earth's spinning in space
The sun's rotation around Earth
The moon's rotation around Earth
Earth's orbit around the sun

Answers

Earth's orbit around the sun

Explanation:

The definition of an orbit is a circular shape, the rotation of one full circle or a range of experience. The 365 days it takes the earth to get around the sun is an example of the time it takes for a complete orbit or full circle around.

what cycle do some viruses use to insert the viral dna into the host cell dna before it enters a lytic cycle?

Answers

Some viruses uses Lysogenic cycle to insert the viraldna into the host cell dna before it enters a lytic cycle.

The lysogenic cycle also referred to as nonvirulent infection, includes the virus integrating its genome with the genome of the host cell in order to replicate without destroying the host. An example is the structure of a bacteriophage. To reproduce, the phage should first penetrate the host cell.

The lysogenic cycle is characterized by The phage infecting a bacterium and inserting its DNA into its chromosome, enabling the phage DNA (now known as a prophage) to be replicated and transferred on alongside the cell's own DNA.

The lytic cycle includes virus reproduction by utilizing a host cell to produce more viruses, which then ruptured out of the cell. The viral genome is incorporated into the host cell genome during the lysogenic cycle, infecting it from within.

For more information on Lysogenic cycle, visit :

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