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3 years ago

Why is the rate of movement of the air bubble not exactly the same as the rate of water loss from the plant?

Biology

1 answer:

OLEGan [10]3 years ago

8 0

Answer:

Both depends on different factors.

Explanation:

The rate of movement of the air bubble is not exactly the same as the rate of water loss from the plant because both depends on different environmental factors. The higher rate of movement of the air bubble occurs due to removal of pressure while on the other hand, the rate of water loss from the plant occurs due to temperature. So both air bubble and transpiration process depends on different environmental factors.

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Why is there more creatine kinase in dmd muscles compared to average muscles

Nastasia [14]

Answer:

Explanation:

Almost everyone with a neuromuscular disorder has had, or will have, a creatine kinase test. But what exactly is creatine kinase (CK), and why are its levels measured in neuromuscular diseases?

CK, also known as phosphocreatine kinase, or CPK, is a type of protein called an enzyme. It catalyzes, or "encourages," a biochemical reaction to occur. The normal function of CK in our cells is to add a phosphate group to creatine, turning it into the high-energy molecule phosphocreatine. Phosphocreatine is burned as a quick source of energy by our cells.

However, the normal function of CK isn't as relevant, in this case, as what happens to CK when muscle is damaged. During the process of muscle degeneration, muscle cells break open and their contents find their way into the bloodstream. Because most of the CK in the body normally exists in muscle, a rise in the amount of CK in the blood indicates that muscle damage has occurred, or is occurring.

To measure CK levels, a blood sample is taken and separated into fractions that contain cells and a fraction that doesn't — the serum. The amount of CK in the serum is reported in units (U) of enzyme activity per liter (L) of serum. In a healthy adult, the serum CK level varies with a number of factors (gender, race and activity), but normal range is 22 to 198 U/L (units per liter).

Higher amounts of serum CK can indicate muscle damage due to chronic disease or acute muscle injury. For this reason, if you're scheduled to have blood drawn for a CK test to diagnose a potential muscle disorder, you should limit your exercise to normal activities before the test.

7 0

2 years ago

In tomatoes, a heterozygous plant with normal fruit and purple stems is crossed with a recessive plant having fasciated fruit an

Pani-rosa [81]

Answer:

Recombination frequency, P = 0.23.

If the recombination frequency is < 50%, genes are linked. A RF of 23% tells us that these two genes are in the same chromosome, close enough to be linked.

1% of recombinations = 1 map unit
23% = 23 map units

The genes for stem color and fruit type seem to be in the same chromosome, linked and 23 MP apart.

Explanation:

In the present example, the genes for stem color and fruit type seem to be linked.

To know if two genes are linked, we must observe the progeny distribution. If individuals, whos genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. If we observe a different distribution, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent.

In this way, we might verify which are the recombinant gametes produced by the di-hybrid, and we will be able to recognize them by looking at the phenotypes with <u>lower frequencies in the progeny</u><u>.</u>

The following distribution of offspring is observed:

normal fruit, purple stems 38.5%
fasciated fruit green stems 38.5%
normal fruit, green stems 11.5%
fasciated fruit, purple stems 11.5%

38.5% + 38.5% + 11.5% + 11.5% = 100%

N (total number of individuals in the progeny) = 100

number of individuals with normal fruit, purple stems 38.5
number of individuals with fasciated fruit green stems 38.5
number of individuals with normal fruit, green stems 11.5
number of individuals with fasciated fruit, purple stems 11.5

To calculate the recombination frequency we will make use of the next formula: P = Recombinant number / Total of individuals. The genetic distance will result from multiplying that frequency by 100 and expressing it in map units (MU).

P = Recombinant number / Total of individuals.

P = 11.5 + 11.5 / 100

P = 0.23

We need to know that 1% of recombinations = 1 map unit = 1cm. Also, the maximum recombination frequency is always 50%. This means that if the recombination frequency is < 50%, genes are linked. A RF of 23% tells us that these two genes are in the same chromosome, close enough to be linked. FR 23% = 23 UM.

6 0

2 years ago

How does the size of the olfactory bulb in sheep compare to the size in humans? What might this tell you about the sense of smel

likoan [24]

Answer:

-The size of sheep olfactory bulb is two to three time larger than humans olfactory bulb.

-Sheep has strong sense of smell that helps the sheep to acquire food.

Explanation:

- The size of the sheep brain is much smaller than humans but sheep has well developed olfactory bulb than humans. The human brain is more circular in shape whereas sheep brain is more extended.

- The well developed olfactory bulb in sheep helps the sheep to find the food. Sheep has strong sense of smell due to large olfactory bulb. Sheep can easily find the location of food located farway from it as the sheep has strong sense of smell.

7 0

3 years ago

What 2 processes drive the carbon cycle?

MrRissso [65]

Explanation:

the carbon cycle is the biogechemical cycle by which carbon is exchanged between the biosphere, pedosphere, hydrosphere and the Earth's atmosphere

7 0

3 years ago

Read 2 more answers

Many people have a tendency to think that heat and temperature are the same thing. However, this is not true. Heat describes

kati45 [8]

The correct answer is actually

B) energy that flows from warmer objects to cooler objects.

because temperature is a measure of the average amount of energy possessed by an object due to the random motions of its particles. Heat is the energy that flows from warmer objects to cooler objects. Heat cannot flow in the opposite direction.

6 0

3 years ago

Read 2 more answers