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evablogger [386]
3 years ago
15

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.

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Factors affecting heart rate
Genrish500 [490]
1) breathing
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3) physical stress
4) vagal stimulation
5) medications
6) illness
7) diseased heart
4 0
3 years ago
has recently taken up weight lifting and his friends at the gym mistakenly believe they should eat more protein to build muscle.
faltersainse [42]

Complete Question

Ruben Ward has been weight lifting and eating a high protein diet. Below is Ruben's profile and what he ate for a day. He entered his profile information and food intake into Diet & Wellness Plus and then pulled the Diet & Wellness Plus Reports. View Ruben’s Intake vs Goals and Macronutrient Ranges Reports and then answer the questions below. Profile for Ruben Ward 1. Age: 19 years old 2. Gender: Male 3. Height: 5 ft, 8 inches 4. Weight: 205 lbs 5. Non-Smoker 6. Activity Level: Active

Ruben has recently taken up weight lifting, and his friends at the gym mistakenly believe they should eat more protein to build muscle. The DRI for protein for healthy adults is 0.8 g per kg body weight. If Ruben weighs 205 lbs (93 kg), how many grams protein per kg body weight did he eat on this day?

a. 5.37 g/kg

b. 10.33 g/kg

c. 3.55 g/kg

d. 4.88 g/kg

Answer:

c. 3.55g/kg

Explanation:

RDI means Recommended Dietary intake. It is the required amount of a nutrient expected to be taken by an individual for optimal health.

The Recommended Dietary Intake I'd protein falls withing the range of 0.8 grams per kg to 1.8 grams per kg

For Reuben

He weighs 93 kg

If Reuben consumed 330 grams of protein, his grams of protein per kg body weight is

330 grams ÷ 93kg

= 3.55g/kg.

4 0
3 years ago
In a large population of plants, notches in the leaves are caused by a dominant allele N and lack of notches by a recessive alle
Jobisdone [24]

Answer:

C

Explanation:

If the population is in equilibrium, the allele frequencies will be constant.

There is nothing about the heritability of dominant or recessive alleles that make dominant ones any more likely by nature. This rules out choices A and B.

Genetic drift mentioned in D refers to alleles leaving a population. Nothing like this was mentioned in the question, so count that answer out.

C is the only remaining answer by process of elimination. It is also the most logical choice. Directional selection refers to a process of natural selection wherein extreme phenotypes (notched leaves, or non-notched leaves) are favored. In this case, there may be some external pressure causing notched leaf plants to be more evolutionarily fit, meaning that they survive long enough to reproduce more and increase allele frequency of the dominant allele.

5 0
2 years ago
3. If a rock was determined to be around 3.9 billion years old how much Potassium 40 would be left in that rock sample?
son4ous [18]

Answer:

What percent of potassium-40 remains undecayed in a rock that is 3.9 billion years old? The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.

]

Explanation:

5 0
2 years ago
Type the correct answer in the box. Spell all words correctly.
Arturiano [62]

The nitrogen cycle is completed with the process of Denitrification

<h3><u>Explanation:</u></h3>

Denitrification finishes the nitrogen cycle by transforming nitrate behind to vaporous nitrogen. Denitrifying bacteria are the doers of this method. These bacteria utilize nitrate alternately of oxygen while gaining energy, delivering nitrogen gas into the environment.

Denitrification relies on microbial action to crumble freely nitrogen-containing components. Bacilli absorb nitrate to generate energy, but in the method, denitrification transpires and nitrogen is diminished.   Denitrification is an anaerobic means, transpiring chiefly in soils and deposits and anoxic zones in ponds and shores.

5 0
3 years ago
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