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2 years ago

What is the systematic study of natural world?

1 answer:

4 0

<span>The systemic study of natural world is called natural science. It is concerned with the understanding of natural phenomena based on collected data, knowledge or sense of experience by means of observation and experimentation. Natural science is subdivided into two main branches: one is biological science or life science which aims to study life and living organisms their function, structure, evolution, growth, distribution and taxonomy second is physical science which is also broken down into different branches, including Earth science, astronomy, chemistry and physics. </span>

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When might neutralization reactions be used in a laboratory setting

Pachacha [2.7K]

In the event of an acid spill, a base can be poured onto the acid to neutralize the acid to allow a safer cleanup.

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1 year ago

Read 2 more answers

The image is a food web for a forest ecosystem. Fungi and bacteria decompose the bodies of organisms. Here, the _____ are tertia

7nadin3 [17]

Blank 1: <u>hawks and owls</u>

Explanation: Tertiary consumers lie on the top of the food web or pyramid. They are dependent on other organisms for their food. These are carnivores by mode of nutrition. Here, the food web sequence would be like-

small birds----->snakes----->hawks and owls.

That's why they are the tertiary consumers.

Blank 2: <u>decomposers </u>

Explanation: The organic matter of dead plants and animals is decomposed by decomposers. They breakdown the complex organic compounds into simpler substances.

8 0

1 year ago

Read 2 more answers

Neville has low blood pressure and his pituitary started producing a homorone to maintain water balance his blood pressure event

ivanzaharov [21]

Answer: The options are missing in the question,the options are;

A) Positive feedback will stop the release of this hormone.

B) Positive feedback will speed up the release of this hormone.

C) Negative feedback will speed up the release of this hormone.

D) Negative feedback will stop the release of this hormone.

The correct answer to the question is option D

NEGATIVE FEEDBACK WILL STOP THE RELEASE OF THIS HORMONE.

Explanation: The hormone the will be produced is known as Antidiuretic hormone (ADH).it is otherwise known as VASOPRESSIN.It is secreted by the posterior lobe of the pituitary gland.

The main effect of Antidiuretic hormone is to reduce urine output,(diuresis is the production of large amount of urine). Antidiuretic hormone acts in the distal convulated tubules and the collecting ducts of the nephrons of the kidneys,it increases their permeability to water and more of the glomerular filtrate is reabsorbed. Antidiuretic hormone secretion is determined by the osmotic pressure of the blood circulating to the osmoreceptors in the hypothalamus.

As osmotic pressure rises,for example as a result of dehydration, secretion of Antidiuretic hormone increases. With this,there is Increased reabsorption of water reducing the amount of urine produced.This implies that more water is retained in the body making the rise in the osmotic pressure of the blood to be low,for example,after a large fluid intake, secretion of Antidiuretic hormone is reduced,less water is reabsorbed and more urine is produced.

At high concentrations,for example after severe blood loss, antidiuretic hormone causes smooth muscle contraction, especially vasoconstriction in small arteries.this has a pressor effect,raising systemic blood pressure.

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2 years ago

Suppose that a scientist deletes the AAUAAA consensus sequence, the poly(A) tail, or the 5' cap from pre‑mRNAs in an mRNA. She t

Andrej [43]

Answer:

<h2>AAUAA deletion- (B ) </h2><h2> </h2><h2>Poly(A) tail deletion- (C) </h2><h2> </h2><h2>5' cap deletion- (A) </h2>

Explanation:

(A) introns are not removed from the pre-mRNA due to 5' deletion;

(B) the pre-mRNA is not cleaved at the cleavage site due to AAUAA deletion

AAUAA deletion: if we delete the AAUAA sequence then there is the change of sequence of pre- mRNA that the pre-mRNA is not cleaved at the cleavage site .

Poly(A) tail deletion: Poly(A) tail is the long tail of Adenine in the 3' end of mRNA, after the deletion of Poly(A) tail, it affects the transport of mRNA from the nucleus to the cytoplasm and the mRNA is not transported to the cytoplasm if tail is deleted.

5' cap deletion; the effect of 5' cap deletion is that introns are not removed from the pre-mRNA. The process of intron removing and exon joining is called RNA splicing.

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1 year ago

In three to five sentences, describe the advantages and disadvantages of these maps in modeling mitosis.

zhenek [66]

Answer:

Mitosis involves in cell division.

Explanation:

Mitosis may be defined as a process of cell division which results in the formation of two daughter cells each from a parent cell and each cell having having the same number of chromosomes and chromosomes of the same type as that of the parent nucleus.

The main difference between meiosis and mitosis of a nucleus cell is that it involves only one cell division. And so the cell goes by the steps of prophase, then metaphase, then anaphase and finally telophase. The specialized cells could not survive independently to each other, so they have to develop some complex system of communications like the circulatory system and the nervous system. In this way they can survive. If one of the system dies, entire organisms is more likely to follow.

3 0

2 years ago