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3 years ago

To which functional class of proteins does lysozyme belong?

1 answer:

8 0

Lysozymes are under the enzymes-functional class of proteins. Enzymes are the ones responsible for the acceleration of chemical reactions. These are the macromolecular biological catalysts. <span> When we say enzymes, these are proteins which are directly related to the facilitation of the biochemical reactions. These include lactase and pepsin. You can usually hear these when learning about specialty diets or digestive medical conditions. Some of the examples of this protein’s presence are found in tears, human milk, saliva, and mucus. It is because of their ability to break down bacterial cell walls in order to protein improvement and nucleic extraction of efficiency make these lysozymes important </span>proteins<span> in living organisms. The gene responsible for the encoding of the lyzozome enzyme is called the LYZ gene.</span>

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Determine whether each statement describes mitosis, meiosis, or both mitosis and meiosis.

svp [43]

Occurs in organisms that sexually reproduce ==> Occurs in meosis.

Meiosis is a type of gamete-specific nuclear division.

Meiosis occurs during spermatogenesis and oogenesis (egg formation in women).

In order for the number of chromosomes, characteristic of the species, to be conserved, it is necessary that before the encounter, the number of chromosomes of each of the reproductive cells be divided by two.

The reduction in the number of chromosomes takes place during the phenomenon called "meiosis".

Occurs during growth and development ==> It concerns mitosis.

Mitosis will ensure the good fulfillment of several phenomena:

. embryonic development,

. the general growth of organisms from birth to adult size,

. continued growth of certain organisms and / or organs; for example, trees, hair, teeth in ruminants, nails, ...

The DNA is replicated ==> concern both mitosis and meiosis.

The cell cycle of eukaryotic cells is as follows:

• Interphase (normal functions, DNA replication)

G1 - growth / cellular activity

S - DNA synthesis / replication

G2 - preparation for division

• Phase M (cell division): which consists of either mitosis or meiosis, depending on cell types.

• Cytocinesis (cytoplasmic division).

So whether it is mitosis or meiosis, both are preceded by a replication of the genetic material (DNA)

Occurs in all organisms ==> concern both mitosis and meiosis.

An organism is a set of elements that make up a functional structure.

In biology, the term organism designates a living being as it is organized, that is to say composed of different organs or organelles forming a coherent whole (as opposed to micro-organisms).

All multicellular organisms have sexual reproduction, so their cells are systematically mitosis and meiosis.

We exclude microorganisms of which a very small part of them have asexual reproduction.

The number of chromosomes remains the same : concerns only mitosis.

During mitosis, the human cell has 2n monochromatid chromosomes. In phase S consists of a doubling of the amount of DNA indeed, and the cells then have 2n chromosomes bichromatidiens. In the metaphase of mitosis, the chromosomes of the mother cell are arranged on a "metaphase plate", then split in 2-chromosomes, but monochromatids, during anaphase. Each daughter cell therefore has 2n monochromatid chromosomes.

The number of chromosomes reduces by half ==> Concerns only meiosis

Meiosis unfolds in two stages:

* The first meiotic division is called reductional because it allows to pass from 2n double chromosomes to n double chromosomes.

* The second is called equational because it preserves the number of chromosomes: one passes from n double chromosomes to n simple chromosomes.

Meiosis thus allows the formation of 4 haploid daughter cells (or gametes).

In humans, a normal cell contains 2n = 46 chromosomes (thus 23 pairs) while a gamete contains n = 23 chromosomes in two divisions).

3 0

3 years ago

Read 2 more answers

1. What is the cell?

slavikrds [6]

Answer: Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. ... Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.

Explanation:

3 0

3 years ago

In the ocean, plants and other photosynthetic organisms take in carbon. This carbon is transferred through the food web into the

musickatia [10]

Answer:

C. Oceans are carbon sinks because they store more carbon than they emit.

Explanation:

Oceans are carbon sinks because they store more carbon than they emit. Most of the carbon is produced in the respiration process as well as burning of fossil fuels. This carbon moves to the atmosphere and dissolved into the ocean which is required by the vegetation of ocean. Due to this carbon, vegetation produced more food for the organisms. About 25% of all CO2 emissions are absorbed by the ocean. Source is the part of a plant where materials are produced e.g. leaves whereas Sink refers to the part of the plant where the substrate can be stored e.g. roots or stem for starch.

6 0

2 years ago

A ligand can bind to two receptors, A and B. The Kd for receptor A is 0.001 nM and the Kd for receptor B is 1 nM. Based on the e

Pavlova-9 [17]

Answer:

The answer is: Receptor A because the ligand concentration is greater than the Kd.

Explanation:

Receptor A because the ligand concentration is greater than the Kd., because the conformation of a receptor protein composes the functional state. Ligands include substrates, inhibitors, activators, and neurotransmitters. So, Affinity is a measure of the strength of attraction between a receptor and its ligand.

5 0

2 years ago

How many laws in biology ?????????/

Komok [63]

Answer:

Three Laws of Biology. “Social rules can be broken, but the laws of nature can't.”

A biological rule or biological law is a generalized law, principle, or rule of thumb formulated to describe patterns observed in living organisms. Many of these regularities of ecology and biogeography are named after the biologists who first described them.

3 0

2 years ago

Read 2 more answers