BIOLOGY HIGH SCHOOL

The cell that does not have a cell wall is the _____.

Answers

Answer 1
Answer:

Answer:

Animal cell that does not have a cell wall.

Explanation:

  • An animal cell does not have a cell wall because they do need the cell wall.
  • The cell wall is present in plant cells, its function is to maintain the shape of the cell.
  • The function of the cell wall is to provide shape and structural support to the cell, it made up of cellulose.
  • If the cell wall is present in the animal then it will become stiff, and would not able to carry their usual work. So they lack a cell wall.

Thus the animal cell does not have a cell wall.
Answer 2
Answer: The plant cell has a cell wall; The animal cell is the cell without the wall. So it would be animal

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What category of drugs in the five-category system is reported to have fetal risks but can be used in a pregnant woman if the potential benefit outweighs the risk?

Answers

Answer:

Category D drugs

Explanation:

There are five categories of drugs, they include: categories A, B, C, D and X. Research shows that category D drugs have possible fetal risks, however, the potential benefits on the mothers still outweighs the risk. An example of a category D drug is Losartan.

Category A drugs have no evidence of risk on fetus, an example is folic acid.

Category B drugs also show no adequate evidence of risk on the fetus. An example is metformin.

Evidences shows Category X drugs have an adverse effect on the fetus, hence the risk outweighs the potential effect. An example is Methotrexate.

The oral contraceptive pill, informally called "the pill" contains an estrogen and progesterone or a synthetic mimic of this hormone. The combination of these two hormones taken in the pill and circulating in the blood works becauseSelect one:a. The hormones cause the woman's body to mimic the activities of a pregnancy and disrupt the ovarian cycle, preventing ovulation.b. The hormones cause a thickening of the mucus plug at the cervix that prevents sperm from penetrating the womb and reaching the ovulated egg.c. The hormones create an acid condition in the vagina that acts as a spermicide.d. The hormones prevent the proliferative or secretory phase of the menstrual cycle and the embryo will have no place to implant.

Answers

Answer:a. The hormones cause the woman's body to mimic the activities of a pregnancy and disrupt the ovarian cycle, preventing ovulation

Explanation:

Pills either as real subtance or synthetic form(Placebo) exhibit effect on ovulation ,by suppressing it thereby mimicking pregnancy.

Since ovulation is suppressed fertilization can not take place,no egg/ovum is released to be fertilized by the sperms.

Final answer:

The pill works by releasing estrogen and progesterone into the body. These hormones prevent ovulation and thicken the mucus plug at the cervix, making it harder for sperm to reach the egg.

Explanation:

The oral contraceptive pill, also known as 'the pill', contains hormones that have two main effects. The first is that they change the hormonal balance in the woman's body, making it behave as if it is already pregnant. That's because the hormones estrogen and progesterone prevent ovulation—the release of an egg from the ovaries. Without an egg to fertilize, pregnancy can't occur.

The second effect is that these hormones change the lining of the womb to make it less likely to accept a fertilized egg, and they thicken the mucus plug at the cervix, making it more difficult for sperm to reach an egg in the uterus. So, the correct answers to your question are a and b.

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Which observation proves that a cell is a eukaryote?

Answers

A Eukaryote has a nucleus.

Answer:

The cell contains a nucleus

Explanation:

The sequence of in a Dna molecule determines the protein that will be produced

Answers

Answer:

True

Explanation:

The DNA sequence determines the protein that is going to be produced. The first step is the transcription where DNA sequence is transcribed to mARN. After the mARN is formed this will go out of the nucleus and into the cytoplasm. In the cytoplasm the mARN, together with the tARN and the ribosome will make a protein by a process called translation. In this process the ARN sequence is read to give and join the amino acids that are required to form the protein.

Which of the following events occurs during transcription? A. A molecule of RNA is formed based on the sequence of nucleotides in DNA B. The message of mRNA is translated into a protein C. Those segments of the RNA strand that do not actually code for the protein are removed D. mRNA binds to a ribosomes in the cytoplasm E. A cap is added to the RNA molecule Seguir 1 respuesta 1 Notificar abuso

Answers

The right answer for the question that is being asked and shown above is that: "C. Those segments of the RNA strand that do not actually code for the protein are removed." the event that occurs during transcription is that C. Those segments of the RNA strand that do not actually code for the protein are removed 

Final answer:

During transcription, a molecule of RNA is formed based on the sequence of nucleotides in DNA. This is the process where DNA's information is transcribed into RNA. The other options relate to other stages or processes in protein synthesis.

Explanation:

The event that occurs during transcription is A. A molecule of RNA is formed based on the sequence of nucleotides in DNA. This process involves the DNA's information being transcribed into an RNA transcript. The DNA sequence unwinds, and both the RNA polymerase and transcription factors come into play to synthesize the RNA, using a DNA strand as the template. Throughout this process, A, C, G, and U nucleotides are incorporated into the RNA strand based on the antisense strand of the DNA.

Option B relates to translation, where the mRNA sequence is translated into a protein. For option C, this refers to RNA splicing, where introns (segments of RNA strand that do not code for protein) are removed. In option D, the mRNA binding to a ribosome in the cytoplasm is a part of the translation process, not transcription. Option E is associated with RNA processing where a 5' end cap is added to the mRNA for stability and efficient translation.

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Which of these oceans remain frozen accept for part of the year, when the edges melt?Question 4 options:


Indian


Southern


Pacific


Artic


Atlantic

Answers

The ocean that remain frozen accept for part of the year when the edge melt is : ( D ) Arctic Ocean

The Arctic ocean

The arctic ocean stays frozen most times of the year until when the edge of the ocean melts. the artic ocean keeps the polar region of the earth cool and it  remains frozen for up to 8 months of the year.

Hence we can conclude that the Ocean that remain frozen for most part of the year is Artic ocean.

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Answer:

the answer is arctic

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