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jolli1 [7]
3 years ago
12

Summarize the steps of the scientific method.

Biology
1 answer:
icang [17]3 years ago
4 0

Answer:

1) make an observation- what problems do you notice in the natural world? these probelms all have a solution, what do you think would be a way to solve them,

2) create a hypothesis- create an educated guess on how your solution to fix the problem will work, it must be highly specific and it cant be a yes or no answer

3) test the hypothesis- test to confirm your theory

4) draw conclusions- was this a good solution or not? why?

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Echinoderms _____. _____ Select one: a. have an exoskeleton of hard calcareous plates b. often use tube feet to move around in t
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Answer:

B. often use tube feet to move around in their environment

Explanation:

Tube feet are tiny tubular projections of echinoderms on the underside (oral side). They are a member of the echinoderm water vascular system.

Tubular feet are used for feeding, breathing and shifting. They are arranged around the sides, in grooves. They work by hydraulic pressure. They are used to transfer food in the centre to the oral mouth, and may stick to surfaces. Tube feet allow certain animals to stick and travel slowly to the ocean floor. for example starfish uses tube feet for the above functions.

Hence, the correct option is B.

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3 years ago
A medical professional is doing an external examination to determine if lymph nodes in a patient are swollen. Where would be the
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3 years ago
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(b) Most globular proteins are denatured and lose their activity when briefly heated to 65 8C. However, globular proteins that c
frez [133]

Answer:

Explanation:

The higher temperature is the factor which is responsible for the process of denaturation of proteins in which the breaking down of hydrogen, disulphide bonds and destabilization occurs. This process breaks up the bond between the polypeptides.

The bovine pancreatic trypsin inhibitor comprises of 58 amino acids this consists of the disulphide bonds which are destroyed on heating as a result of this the inhibitor becomes inactive. But on cooling it comes to the original form as the internal structure starts making hydrogen and disulphide bonds again. Thus the activity of the BPTI again gets restored.  

6 0
3 years ago
Why is mating between blood relatives discouraged from a genetic perspective?
algol [13]

Inbreeding is simply defined as the mating of relatives. It is a mating system in which individuals carry alleles that originated from a common ancestor. Inbreeding is considered a problem in humans because inbreeding increases the chances of receiving a deleterious recessive allele inherited from a common ancestor.

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2 years ago
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Which of the following is true about moss sporophytes?
Pie

Answer: sporophytes photosynthesise, particularly when immature, but depend on gametophytes for at least 50% of nutrient requirements

Explanation: In mosses, the gametophyte generation is the dominant generation unlike in higher plants. The diploid sporophyte generation produces several spores per capsule.

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2 years ago
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