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2 years ago

Whole, intact shell eggs must be stored at a temperature of _______ to be kept safe?

1 answer:

7 0

The answer is Air temperature of 45 degrees F or lower. I<span>t is very important to refrigerate them at a temperature of 45 °F or below. Keep the eggs in their carton and place them in the coldest part of the refrigerator, not in the door. Storing eggs in the refrigerator door could lead to temperature fluctuations that can lead to bacteria growth.</span>

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A mutation of the proteolytic enzyme Trypsin (described in Section 6.1) results in a stable covalent bond between one of the cat

jolli1 [7]

Answer:

b. The enzyme and substrate would be stuck together.

Explanation:

Enzymes are proteins whose active site binds to specific chemical reactants (i.e., substrates), thereby forming a complex that is similar to the interaction between a lock and its key. This active complex lowers the energy of the reaction and promotes a conformational change in the substrate to break down it into multiple products. When the enzyme contains mutations in its active site, the ability to bind the substrate is altered. In this case, the enzymatic reaction can't occur because the interaction enzyme-substrate doesn't produce an active complex.

5 0

2 years ago

Suppose concordance data were collected from a cohort study of twins to study the genetic contribution to the onset of type 1 di

Dmitry_Shevchenko [17]

Answer:

The heritability of type 1 diabetes is likely high, indicating that genetics plays a larger role in the development of type 1 diabetes than the environment.

Explanation:

Identical twins are formed when a single zygote separates into two embryos after the process of fertilization. Hence, these twins arise from the same egg and sperm.

Fraternal twins arise when two different sperms fertilize two eggs at the same time.

Hence, we can say that the genotype of the identical twins is similar.

The results from concordance data prove that genetics play a higher role in type 1 diabetes.

7 0

2 years ago

In eastern gray squirrels, Sciurus carolinensis, the allele for black fur (B) is dominant to the allele for gray fur (b). In a p

anastassius [24]

Answer:

The correct answer is "The frequency of the B allele increased due to the selective pressures of the environment".

Explanation:

The missing part of the question is "Which of the following could best explain the increase in the frequency of the B allele in the population after five years?" at which the answer is "The frequency of the B allele increased due to the selective pressures of the environment".

In this study, the allelic frequency for black fur (B) in eastern gray squirrels Sciurus carolinensis changed from B=0.4 to B=0.6 within a lapse of five years. This increase is explained by the effect of selective pressures of the environment. For instance, is likely that new predators were more likely to detect squirrels with gray fur over black fur, or changes in the landscape benefited the black fur squirrels camouflage.

5 0

2 years ago

A boy threw a small bundle toward his girlfriend on a balcony 10. meters above him. The bundle stopped rising in 1.5 seconds. Ho

Alisiya [41]

Hi!

We know that the boy must have thrown the bundle with some initial velocity 'v', and that the bundle stops after 1.5 seconds at a height 's' with a final velocity 'u' -which would be 0.

Our known values thus are:

Time (t) = 1.5 s

Final velocity (u) = 0 m/s

Gravitational acceleration (g) = -9.8 m/s^(2)

<em>Note: that the acceleration is negative as it is opposing the direction of motion (acting down on the object, causing deceleration)</em>

We will be using <em>equations of motion for an accelerating object</em> to solve first for initial velocity, in order to find the distance.

<h3>Initial Velocity using <u>v = u + at</u></h3>

Rearranging the equation, and using the value 'g' as our acceleration, we get,<em> u = v - at</em>

u = 0 - (-9.8)(1.5) = 14.7m/s

<h3>Distance Travelled using <u>v^2 = u^2 + 2as</u></h3>

Rearranging the equation, we get, <em>s= v^(2) - u^(2) / 2a</em>

s = 0^(2) - 14^(2) / 2(-9.8)

<em>Note: the negative sign is not a part of the initial velocity, but a part of the equation </em>

s = - 216.09 / -19.6 = 11.025 m

The distance traveled by the bundle is hence, ~ 11 meters, which is high enough for the girl to catch.

Hope this helps!

6 0

2 years ago

The cell cycle is regulated at the molecular level by a set of proteins known as

galben [10]

The cell cycle is regulated at the molecular level by a set of protein known as CYCLIN . Cyclin are a core regulator of the cell cycle. They are group of related proteins and four different types have been identified in humans. Each cyclin is associated with a particular phase of the cell cycle.

5 0

2 years ago