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2 years ago

Read each example and identify whether the data

Biology

2 answers:

Ksenya-84 [330]2 years ago

6 0

Answer:

1. Observation

2. Inference

3. Inference

4. Observation

5. Inference

Explanation:

Observing is capturing a property or a change by using the senses with or without the aid of an instrument. It does not involve judgement or reasoning.

On the other hand, an inference involves reasoning, a judgment by which a conclusion is drawn from the observations and the knowledge accumulated by the person making the inference.

1. The fish’s ventral fin measured 8.5 cm long.

Observation

The size of the fisht's ventral find is measured with an instrument; reasoning is not involved.

2. The population of protozoans in the lake has increased since there is an increased level of carbon dioxide in the water.

Inference

It is an inference because the population is measured but the reason why it increased is a conclusion or hypothesis product of analysis (reasoning). It is based on evidence, but not the evidence per se.

3. The grizzly bear’s tracks were 5.5 cm deep in the mud; therefore, it weighs 410 kg:

Inference

The first measure, the depth of grizzly bear's track is an observation, because it is measured, but the weight of the grizzly bear is a conclusion derived from other knowledges that require the use of our mind, may be from a correlation, or a table, or a formula, but it is not measured directly using our senses.

4. The level of ozone in the atmosphere increased to 34 parts per billion after the thunderstorm. (notice some typos were corrected).

Observation

5. Many fish bones were found around the eagles’ nest; therefore, the eagles were eating fish.

Inference

This is an inference, because it is a conclusion or hypothesis. Many fish bones were observed around the eagles'nest, but the eagles were not seen eating fish, but the observer thought (concluded) that the evidence of the fish bones supported the conclusion that the eagles were eating fish.

kozerog [31]2 years ago

3 0

Answer:

1. Observation

2. Inference

3. Inference

4. Observation

5. Inference

Explanation: edg 2020

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Dangling high above the ground, this rock climber relies on muscular strength to pull her weight higher and higher. However, mus

Aloiza [94]

Answer:

The correct answer is - It has to act together with the nervous system mainly with other systems that assist in rock climbing.

Explanation:

Rock climbing is a physical activity or sport that could practice indoor or outdoor with mountains. It is a sport that requires physical and mental strength as it requires muscle strength, coordination, or balance, agility, endurance, and mental control over body and mind.

Muscular systems involve pulling the weight of an individual towards and leg muscles to hold whereas the nervous system controls or maintain the actions of muscles and also helps in balance the body of the climber. This neuromuscular set helps in maintains the muscle's tonicity in order to execute the action of climbing.

Other than these two main body systems there are cardiovascular system, circulatory system and respiratory system also helps in providing the conditions like increase oxygen input, high heartbeat, and more.

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2 years ago

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A scientist is using relative dating to determine the age of a fossil that she discovered.

Dmitry [639]

Answer: D.finding fossils in the same area that are in layers closer to the surface.

Relative dating refers to the age estimation method in which past events are determined, to compare the age of object, organism, strata or rock with the age of other similar entity. This method gives an approximate or estimated age, it does not provide absolute age.

The older fossils are found in deeper layers of the strata as compared to younger fossils. This represents the geological time and life span of primitive or preexisting organisms. Therefore, according to the given situation, finding fossils in the same area that are in layers closer to the surface is the best conclusion.

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2 years ago

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Sean and Tommy are debating the positive and negative impacts of technology on environmental quality. Sean is listing the positi

Reptile [31]

It will be b I’m pretty sure

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2 years ago

Genetic linkage mapping for a large number of families identifies 4% recombination between the genes for Rh blood type and ellip

Cloud [144]

Answer:

0.2404

Explanation:

The genes R/r and E/e are linked and there is 4% recombination between them.

The possible genotypes and phenotypes are:

RR or Rr: Rh+ blood type
rr: Rh- blood type
EE or Ee: elliptocytosis
ee: normal red blood cells

Tom and Terri each have elliptocytosis (they are E_), and each is Rh+ (they are R_).

Tom's mother has elliptocytosis (E_) and is Rh- (rr), so she has the genotype Er/_r. His father is healthy (ee) and has Rh+ (R_), so he has the genotype eR/e_. Tom must have inherited his E allele from his mother and his R allele from his father, so he has the genotype eR/Er.

Terri's father is Rh+ (R_) and has elliptocytosis (E_), while Terri's mother is Rh- (rr) and is healthy (ee) with the genotype er/er. Terry could only receive the chromosome er from her mother, and because she is heterozygous for both genes the dominant alleles were both received from her father. Terri's genotype is ER/er.

The frequency of recombination is 4%, so 4% of the produced gametes will be recombinant. There are two possible recombinant gametes, so each will appear 2% of the times (a frequency of 0.02).

Tom will produce the following gametes:

eR, parental (0.48)
Er, parental (0.48)
er, recombinant (0.02)
ER (recombinant (0.02)

Terri will produce the following gametes:

ER, parental (0.48)
er, parental (0.48)
Er, recombinant (0.02)
eR, recombinant (0.02)

A child Rh- with elliptocytosis has the genotype rrE_. This can happen from the independent combination of the following gametes from Tom and Terri respectively:

Er (0.48) × er (0.48) = 0.2304 Er/er
Er (0.48) × Er (0.02) = 0.0096 Er/Er
er (0.02) × Er (0.02) = 0.0004 er/Er

And the total probability of having a rrE_ child will be 0.2304 + 0.0096 + 0.0004 = 0.2404

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Why can the same trna and rrna molecules be used to synthesize a wide variety of polypeptides

Drupady [299]

Answer: The transcription and translation process allows trna and rrna molecules to be used to synthesize wide variety of polypeptides.

Explanation:

DNA molecule is made up of information for coding proteins. This information is passed on the mRNA during a process known as transcription. Transcription is the first of many steps of DNA based gene expression in which a part of the segment of DNA is copied into RNA (especially mRNA) by the enzyme RNA polymerase.

Both DNA and RNA are nucleic acids, which use base pairs of nucleotides as a complementary language. During the process of transcription, a DNA sequence is read by an RNA polymerase, which gives a complementary, antiparallel RNA strand referred to as a primary transcript.

A large diversity among genes is followed by a large amount of various mRNA molecules. However, the ribosomes consist of rRNA, which is included in the process of translation. Translation is the process whereby ribosomes in the cytoplasm or ER synthesize proteins after the process of transcription of DNA to RNA in the cell's nucleus. The overall process is called gene expression.

The smallest of the three types of RNA is tRNA, which has only 75 to 95 nucleotides and has a role in bringing particular amino acids to the growing polypeptide. It can be concluded that mRNA contribute to the diversity of polypeptide molecules due to the fact that it carries an information about their synthesis.

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