Approximately how many olfactory receptor cells do we have in total?

Answers

Answer 1

Answer:

Answer:

50 Million

Explanation:

The olfactory area in humans is about 2.5 cm2 wide and contains a number of about 50 million receptor cells with 8–20 cilia down in a layer of mucus of about 60 microns thick, produced by Bowmann glands in the olfactory epithelium

Answer 2

Answer:

Final answer:

Humans possess approximately 400 different types of olfactory receptors, expressed by olfactory sensory neurons in the nose. Each receptor binds to odorant molecules, triggering signals to the brain to recognize different odors. The exact number of olfactory receptor cells is in the millions.

Explanation:

Humans have approximately 400 different types of olfactory receptors. These receptors are expressed by certain genes and each one is capable of recognizing a different type of odorant molecule. Interestingly, although humans can detect about 10,000 different smells, it is suggested that there may be up to 1.72 trillion different recognizable smells in the world.

The receptors are located in the olfactory neurons in the olfactory epithelium within the nasal cavity. The neurons are specialized, with each olfactory sensory neuron carrying only one type of receptor. The receptors bind to the odorants and send signals to the olfactory bulb in the brain, and then to other locations such as the olfactory cortex.

The specific number of olfactory receptor cells in the human body may vary, but it is estimated to be in the millions. Each receptor cell has multiple hair-like cilia that contain the odorant-binding receptor proteins. When an odor molecule binds to a receptor, it causes a response in the sensory cell which then transmits the information to the brain for processing.

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During the production of gametes, the chromosomes condense, and the chromatids of homologous chromosomes cross over to form new allele combinations, which of thefollowing best describes the life cycle of this cell? 1, The cell will separate into two daughter cells next, and cytokinesis will occur.
2The cell is in prophase I of meiosis and will enter metaphase I next.

3The cell will make a copy of each chromosomein order to form diploid daughter cells.s o
4The cell is in interphase II of meiosis and will enter prophase II next

Answers

2The cell is in prophase I of meiosis and will enter metaphase I next. Prophase I of meiosis is when crossing over of tetrads at chiasma occurs to create genetic variation.

A _______ is a segment of a chromosome that codes for a specific protein.A: gene
B: crossed out
C: amino acid
D: nucleotide

Answers

In the sentence "A _______ is a segment of a chromosome that codes for a specific protein", the word that correctly completes the sentence is A: gene. In other words, a gene is a sequence of a chromosome that holds the code for protein synthesis. In the transcription, the gene is transcribed into messenger RNA (mRNA). In translation, mRNA is translated into proteins.

A _______ is a segment of a chromosome that codes for a specific protein.
A: gene

The mass of an atom is contained primarily in its _____. A. Electron Shell B. Nucleus C. Proton D. Size

Answers

The mass of the atom is contained mainly in the nucleus itself. The nucleus is composed of a number of protons and neutrons which are positively charged and neutrally charged sub particle components. The nucleus are surrounded by electrons.

The mass of an atom is contained primarily in its NUCLEUS.
An atom is made up of three sub particles, which are proton, neutrons and electrons. The proton and the neutrons are located in the nucleus of the atom while the electron are located outside the nucleus where they move about in continuous motion around the nucleus. The proton and the neutrons, which are located in the nucleus have the same relative mass of 1, which has been estimated to be about 2,000 times bigger than that of the electron, which has a relative mass of 0.0005. This shows that, the mass of an atom is located primarily in its nucleus.

What do the moss life cycle and the fern life cycle have in common?A) Double fertilization produces a 3n cell
B)Seeds are protected and nourished by a fruit
C)The zygote is the first cell of the gametophyte phase
D) Fertilization produces a diploid cell.

Answers

Fertilization produces a diploid cell is the common phase that occurs in the life cycle of both the moss and fern. Hence, the correct option is D.

What is fertilization?

Fertilization refers to the fusion of haploid gametes of the male and female to produce a diploid cell, which is called zygote.

Mosses belong to bryophytes and ferns belong to class pteridophytes. Both undergo sexual and asexual reproduction. They undergo asexual reproduction by the production of spores, while sexual reproduction with the formation of gametes.

Both undergo oogamous mode of sexual reproduction with the formation of zygote that is diploid in nature. It is facilitated by the fusion of non-motile female gamete with the motile male gamete, which is termed as sperm.

Therefore, the correct option is D.

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Answer;

D) Fertilization produces a diploid cell.

Explanation;

In mosses; A single spore germinates to form a branched, filamentous protonema, from which a leafy gametophyte develops. The gametophyte bears organs for sexual reproduction. Sperm, which are released by the mature antheridium (the male reproductive organ), are attracted into the neck of an archegonium (the female reproductive organ). Here, one sperm fuses with the egg (fertilization) to produce the diploid zygote.

The life cycle of a fern is very different from the life cycle of many other plants. Ferns have an intermediate stage, called a gametophyte, which then grows into a mature fern. During Gametophyte stge, the spores are produced on the underside of mature plants. These will germinate and grow into small, heart-shaped plants called gametophytes. The gametophytes produce both sperm and egg cells, and will fertilize itself, or others to yield a diploid cell.

If you have a transfer RNA molecule with the anticodon CCC what is the amino acid being carried in during elongation?

Answers

Answer:

please give me brainlist and follow

Explanation:

At one end, the tRNA has an anticodon of 3'-UAC-5', and it binds to a codon in an mRNA that has a sequence of 5'-AUG-3' through complementary base pairing. The other end of the tRNA carries the amino acid methionine (Met), which is the the amino acid specified by the mRNA codon AUG.

The basic building of basic of basic blocks of a protein are?1. glucose molecules
2.amino acids
3. hormones
4. fats

Answers

the anser is 2. amino acids

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