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Sav [38]
3 years ago
6

A marine scientist measures the energy found in a system consisting of seagrass and sunlight. After the seagrass grows for one w

eek, the marine scientist concluded that radiant energy from the sunlight was transformed to chemical energy in the seagrass. Does this result validate or invalidate the Law of Conservation of Energy?
A=Validate, because energy cannot be created or destroyed but can change forms.
B= Invalidate, because energy should not enter an open system
C= Validate, because the overall energy in the seagrass is less
D= Invalidate, because this scenario describes an isolated system
Biology
2 answers:
Anettt [7]3 years ago
7 0

Answer: A=Validate, because energy cannot be created or destroyed but can change forms.

Plants absorbs energy from sun, to prepare their food in the form of carbohydrates by photosynthesis.This chemical energy from food is required by the plants for cellular metabolism. The same process will occur in sea grass.

The law of conservation of energy, says that energy can neither be created nor be destroyed, but it can change it's form. In the given situation, the sunlight energy is converted into chemical energy in plants. Therefore, it can be said that radiant energy from the sun is conserved in the form of chemical energy in sea grass.

Therefore, the results of the experiment, is validate, because energy cannot be created or destroyed but can change forms.

sergey [27]3 years ago
6 0
`<span> law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
</span>The right answer would be A)
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Answer:

is it shale

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Explanation:

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2. What are the major hormones and nervous pathways that play a role in primate (including humans) stress reactions?
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Answer: Epinephrine (also known as adrenaline) and norepinephrine (also known as noradrenaline)

Explanation:

The hypothalamic-pituitary-adrenal axis (HHA axis) is a complex set of direct influences and feedback interactions between the hypothalamus, the pituitary gland, and the adrenal gland. The fine homeostatic interactions (Homeostasis) between these three organs constitute the HHA axis, an essential part of the neuroendocrine system that controls reactions to stress and regulates various processes in the body such as digestion, the immune system, emotions, sexual behavior and energy metabolism.

Adrenaline (or also epinephrine) is synthesized and stored in the adrenal medulla and released into the systemic circulation. Noradrenaline (or norepinephrine) is synthesized and stored not only in the adrenal medulla, but also in the peripheral sympathetic nerves. <u>Epinephrine, among other things, increases the heart rate. Norepinephrine constricts blood vessels and extends the length of sympathetic nervous system activation</u>.

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4 0
3 years ago
What would happen to an ecosystem if the decomposers and detritivores disappeared?
svp [43]
Organisms that die would have a harder time decaying, or may not even break down at all! Decomposers and detritivores break down dead organisms so without them it won't take place.
8 0
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Suppose that the X‑linked recessive condition hemophilia A affects 1 in 5000 males in the United States. Assume that the only tw
azamat

Answer:

We have two alleles, XA and Xa and the genotypic frequencies are given by p^2 + 2pq + q^2 = 1

In this equation XA is p and Xa is q. Therefore p^2 is the frequency of the genotype XAXA, etc.

For X-linked conditions, females have 2 alleles for the gene, but males only have one. So calculate the genotypic frequencies for males and females separately. Since the population is in Hardy-Weinberg equilibruim, the allelic frequency is the same for both sexes.

Since males only have one X chromosome, the frequency of X linked in male is equal to the allelic frequency. So frequency just equals 1/5000 or 0.0002

so q^2 = q for males in X linked

So q = 0.0002

for females, she would need to have both alleles, so her frequency of the homozygous genotype is q^2 = 0.0002^2 = 0.00000004

number of affected females would be q^2 x number of females in the population

so 0.00000004 x 160 mil = 6.4 females would have hemophilia.

Explanation:

8 0
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slava [35]

Answer:

The H1N1 virus replicates quickly.

Explanation:

The H1N1 virus replicates quickly, which is why it is of high importance that an antiviral agent is administrated within the first 48 hours so that the reproduction rate of the virus can be lowered, resulting in an effective treatment against H1N1 flu. In other words, by administrating an antiviral in the first 48 hours, we are helping the body to fight the virus since the antiviral stops the reproduction of it, and we increase the chances of succeeding at it.

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