All categories

3 years ago

5. competition

Biology

2 answers:

GenaCL600 [577]3 years ago

6 0

Answer:

Explanation:

Competition is defined as an activity done by two opposing sides, both of which are trying to do better than the other.

Step2247 [10]3 years ago

5 0

The answer would be B.

You might be interested in

Restriction endonucleases are especially useful if they generate sticky ends. What makes an end sticky?

Mazyrski [523]

The question is incomplete as it does not have the options which are:

A) single-stranded complementary tails

B) blunt ends

C) poly-A sequences

D) 5' cap

E) interference

Answer:

A) single stranded complementary tails

Explanation:

Restriction endonuclease is the enzyme which cuts the DNA sequence in the internal sequence.

The endonuclease enzyme can cut the DNA sequence in a way that it can form the cuts with the single-stranded overhangs called sticky ends and without overhangs called blunt ends.

The sticky ends are produced when the enzyme makes cut at the single strand and then makes the cut at between the same base at the nitrogenous base. This type of asymmetrical cut forms the single-stranded overhangs which can form the complementary base pairs easily.

Thus, Option-A is correct.

5 0

4 years ago

Coliform bacteria populations are routinely monitored in drinking water supplies, swimming pools, and at beaches because these b

Viefleur [7K]

Answer:

They are used as an indicator organism for pathogenic bacteria.

Explanation:

Coliforms are bacteria found in digestive tract of animals and humans. They are non-pathogenic, easy to culture and are used as an alternative indirect testing for presence of other microorganisms. Coliforms thrive in exact environmental conditions like other pathogenic bacteria, thus often used to indicate whether they are bacteria found in drinking water and swimming pools that might end up causing infections.

Therefore the existence of coliforms in water easily indicates feacal contamination.

7 0

3 years ago

The histone proteins are among the most slowly evolving proteins. For example, a histone protein called histone H4 in cows and p

juin [17]

The statement is true, histones are proteins that are high in the amino acids lysine and arginine, making them extremely basic in their structure.

Histones control the degree of packaging of DNA during the processes of gene expression, replication or repair of hereditary material, among many others.

Histones H2A, H2B, H3 and H4 are small and basic proteins that are highly conserved in evolution and are composed of a globular domain at the carboxy-end, and by regions known as "tails", which are found at the amino-terminal end.

These tails are high in the amino acids lysine and arginine, which give them a positive charge.

This region is the site of numerous post-translational modifications that, it has been proposed, would modify the histone charge, altering the accessibility of the DNA and the protein / protein interactions with the nucleosome.

Chromatin compaction occurs due to the interaction between the negative charges of DNA and the positive charges of amino acids, mainly located on the tails of histones H3 and H4.

Therefore, we can conclude that the modifications on the amino acids lysine and arginine that form the basic part of the histone structure alter their functions.

Learn more about histone proteins here: brainly.com/question/14984828

8 0

3 years ago

Hormones are ___________. chemicals released into the bloodstream by the endocrine glands chemicals found in the synaptic vesicl

Oksi-84 [34.3K]

Hormones are called chemical messengers

5 0

3 years ago

How do only certain cells respond to particular signaling molecules that may be sent throughout the body? see section 11.3 ( pag

poizon [28]

Not all cells have the ability to receive signal from other cells and respond to those signals. There are certain cells that have specific receptors (receptor proteins) attached on their cell surface. These receptors are specific for some signal molecules. When the signal molecule attaches to the receptor of the cells, the signal is received and carried forward. This cell to cell signaling is called signal transduction or cell signalling.

6 0

3 years ago