All categories

3 years ago

Which of the following statements about olfactory receptors is false?

Biology

1 answer:

Thepotemich [5.8K]3 years ago

6 0

Answer:

They are bulb-like structures at the tip of the frontal lobe where the olfactory nerves begin. (Ans A)

Explanation:

Olfactory receptors which are also known as smell receptor, and present in the cell membrane of olfactory receptor neurons. They are the proteins which are capable of binding with odour molecules which play an important role in the sense of smell.

Each receptor of olfactory cell contains a single external process which extends to the surface which is found in the epithelium, and gives rise long, slender extensions know as cilia. Mucus of the nasal cavity covered the cilia, and facilitating the detection of odour molecules.

You might be interested in

A 5 km by 5 km plot has a weed count of 250 weeds. What would the population density be for the exact same plot six months later

Rasek [7]

So 200/25 is equal to 8, and because of that, the plot has 8 weeds per square kilometer.

6 0

3 years ago

honeybee is considered as the most useful insect for human beings.justify this statement with any three reasons

Oduvanchick [21]

Answer:

Polinate plants, trees and food
They give us honey
bees are responcible of pollinating 15 billion of just US crops and 200 million pounds of UK crops. showing their contribution to agriculture

6 0

2 years ago

Identify which layer of the integumentary system each of the following is most likely to be found and provide a one phrase descr

Zielflug [23.3K]

Answer:

The integumentary system comprises the skin, nails, hair and exocrine glands. The average persons skin weighs a approximately 9Kilograms and spans about 20 square feet.

Phagocytic cells: These are found in the dermis or hypodermis. The skin layer that lies directly beneath the epidermis and above the subcutaneous layer is the <em>dermis</em>. It is made up of fibrous and flexible tissue and is the thickest layer of the skin. It thus gives the skin power and flexibility.

Phagocytic cells are cells within the skin that are designed for detecting, engulfing, and destroying pathogens (such as bacteria and other harmful organisms) and apoptotic cells. Apoptotic cells are cells in the human body that have spent their lifespan and are ready for replacement.

Keratinocytes: This is the most common type of cell in the human skin. It is mostly found on the Epidermis and comprises about 95% of the same.

The Epidermis is the most visible part of the skin. It is the part of the skin which the eyes can see. Its function is mostly protective. It receives all nutrition from the dermis because it does not contain any blood vessels.

Arrector Pili Muscle: Beneath the skin, there are tiny muscles that are attached to the base of a hair follicle at one end and to dermal tissue on the other end. These are known as the Arrector Pili.

Papillae: The dermal papillae comprise a little amount of the dermis. They project out of the epidermis. They aren't always immediately visible on the surface of the skin but tend to be quite obvious when examined under a microscope.

Melanocytes: These are neural crest-derived melanin-producing cells. They are mostly found in the lower layer of the skin's epidermis (also known as the stratum basale), the middle layer of the eye (uvea), the inner ear, the vaginal epithelium, the meninges, the bones, and the core. A black pigment mainly responsible for skin color is melanin.

Paccinian corpuscles: can always be seen in the deep part of the dermis of both glabrous and hairy skin. Structurally, they are very much like the Meissner's corpuscles.

Paccinian corpuscles can be found in the Periosteum of the bone, capsules of the joints, pancreas, other internal organs, breast, and genitalia.

Cheers

8 0

3 years ago

Distinguish between the plant cells<br> and animal cells

soldier1979 [14.2K]

Answer:

Similarities Between Plant and Animal Cells

Animal Cell

Plant Cell

Domain Eukarya Eukarya

Cell Wall No Yes (made of cellulose)

Vacuole Either none or a few very small througho ... One very large also called the “central ...

Mobility Can be mobile and fluid Not mobile or fluid

5 more rows ...

Sep 5 2021

Explanation:

5 0

3 years ago

Why is special creation not considered a scientific explanation for the diversity of life on earth?

Rufina [12.5K]

Special Creation is a term that can be interpreted a number of ways, just as evolution can. One interpretation called Young Earth Creationism, YEC, erroneously discounts much of the physics, chemistry, biology and wealth of data that science has observed. Most pronounced is the proposition that the universe is only ~<10 k years old. Because of this, it is not considered scientific. When applied to the diversity of life, YEC's believe all life is the result of special creation events made in less than one week of time, countering the long times for organism development and progression that science has observed. YECs account for the origin of all life through special creation, while science presently has no explanation naturalistically for the origin of life. YECs do not recognize evolution, science presently considers evolution through natural selection, as the source of all living entities. While evolution is fatally flawed in explaining how life has progressed, YECs compress all life development, despite the long period of time indicated scientifically.

An alternate special creation model accepts the long era of Earth formation and life's creation and progression, attributes the origin of life to God's intelligent designed cellular functionality, considers all of the fossil evidence showing stages of radiation events, stasis and extinction as God bioformed the Earth using common design for the eventual consciously intelligent humans.

8 0

3 years ago