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3 years ago

4. Chargaff's research had shown that there are four monomers in DNA, in which two are always present in equal

Biology

1 answer:

viva [34]3 years ago

8 0

Answer:

The monomers of DNA are individual nucleotides: cytosine, guanine, adenine, and thiamine, (A, T, C, G, respectively). Since DNA is a double-stranded molecule, each nucleotide has a match that chemically interacts with it to form nucleotide pairs

Explanation:

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What is one of the root causes of environmental problems?

Goryan [66]

Answer:

here are some:

1) market failure, 2) the tragedy of the commons, and 3) the underprovisioning of public goods. One of the first principles of free markets is that for them to work effec- tively, the full costs of an activity must be borne by the involved parties.

Explanation:

hope this helps <3

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3 years ago

Which of the types of T cells is responsible for destroying pathogens by punching holes in their cell membrane and by secreting

ch4aika [34]

Answer: Cytotoxic T cells

Explanation:

A Cytotoxic T cell is a cell whose activation is mainly aimed at destroying cells that are infected by virus. It is a type of white blood cells that destroys cancerous cells or cells that are impaired especially by viruses. A Cytotoxic cell is also known as T-killer cells, Cytolytic T cells, T lymphocyte.

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3 years ago

According to the Endosymbiotic Theory, infoldings in the cell membrane of an ancestral prokaryotic cell gave rise to endomembran

Ad libitum [116K]

Explanation:

<u>False:</u> C) The ER provides separate microenvironments for each of the modifications that must take place to proteins.

The golgi apparatus comprised of several components called cisternae, these function as different microenvironments, where further modification proteins and lipids into functional biomolecules occurs.

During protein synthesis, transcription occurs in the nucleus, followed by translation within ribosomes, the newly synthesized proteins enter endoplasmic reticulum where they undergo folding and modification. Within the golgi body, the proteins are tagged and parceled into lysosomes for export.

Further Explanation:

The endoplasmic reticulum is a membrane system within the cytoplasm that extends from the outer nuclear membrane. Apart from increasing the surface area within the cell, this continuous system also carries out protein folding, synthesis and transport. In the endoplasmic reticulum or ER, some sections called the smooth ER, do not contain ribosomes, and may contain lipids, enzymes, and other proteins. Other sections bound to ribosomes, are called the rough Er. As a protein destined for the endomembrane system is being synthesized by a ribosome, the first amino acids in the growing polypeptide chain act as a signal sequence. That signal sequence ensures that the ribosome binds to the outer membrane of the ER and that the protein enters the ER lumen. The proteins undergo major modifications and are packed into vesicles.

Golgi bodies are flat, disk-like membranous regions. Proteins traverse the organelle by first having their vesicles bind to the cis face or receiving end. Like a post office, the golgi complex, or golgi body recognizes specific signal sequences, targets and further modifies and packages these compounds into lysosomes for delivery to their final destination. Proteins here undergo peptide processing and glycosylation

Learn more about cellular life at brainly.com/question/11259903

Learn more about mitochondria and similar structures at brainly.com/question/2855039

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3 years ago

If you were able to find a drug that could inhibit the reactivation of telomerase activity in cancer cells, the cancer cells wou

natima [27]

You do have an wonderful theory, but what if they already found the cure for cancer cells? but wont tell us because the government wants us to believe there isnt none so that they can either use it on themselves or wait for the future atleast a million people die from cancer everyday but how come they havent "supposedly" found a cure yet?

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4 years ago

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If 2 parents have blue eyes and they are both heterogeneous. What are the chances their baby will have green eyes?

olchik [2.2K]

Answer: If both the parents have blue eyes, there are 99% chances that the baby will have blue eyes.

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3 years ago