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ella [17]
3 years ago
8

"What is the relationship between reliability and validity? Is it possible for a measure to be reliable and invalid? Conversely,

is it possible for a measure to be unreliable and valid?"
Biology
1 answer:
konstantin123 [22]3 years ago
7 0

Answer:

Explanation:

Reliability has to do with how consistent the measures in an experiment are, this has to do with how reproduceable those measures are under the same circumstance. While validity has to do with the correctness or accuracy of measures in an experiment.

It is possible for a measurement to be unreliable and yet valid because even reliable (consistent measures) may not always necessarily be correct. Experiments involving living things sometimes deviate from normal measures due to several factors that cannot be explained but that does not mean that the results are invalid.

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Cells can conduct many task, including which of the following
Zielflug [23.3K]

Cells are the basic structural, functional, and biological unit of all known living organisms. Cells of various types have different functions but the generalized cell functions include movement of substances across the cell membrane, cell division to make new cells, and protein synthesis. So, the answer is D, cell can conduct many tasks, including duplicate themselves, convert energy and selectively exchange materials.

5 0
3 years ago
a marine biologist dredges up a small animal from the bottom of the ocean. it is uniformly segmented, with short, stiff appendag
Elden [556K]

Given the characteristics mentioned in the question, the animal must be an annelid.

<h3>What is an annelid?</h3>

Annelids, (Phylum name annelida) segmented worms, characterized by having body cavities (or body coelom), mobile bristles (or setae), and bodies segmented by transverse rings. The body cavity is reduced in leeches, and the bristles are devoid of some specialized morphology, including leeches. An important phylum of invertebrates in the animal kingdom, Annelida, consists of more than 9,000 species divided into three classes: Sea worms (polychaetes) are divided into motile and sedentary or tube-dwelling forms. earthworms (Oligochaeta); and leeches (Hildinea). Annelids are coelomic and tridermal.

General characteristics of annelids are:

  1. They show organization at the organ system level.
  2. Your body is segmented.
  3. They breathe through their body surfaces.
  4. The kidney is an excretory organ. They have well-developed circulatory and digestive systems.
  5. Common names for more familiar annelids include earthworms, sandworms, annelids, bristleworms, and leeches.

To know more about annelid, visit:

brainly.com/question/11400463

#SPJ4

4 0
1 year ago
Which of the following explains why children must be vaccinated for communicable diseases, like measles?
maksim [4K]
<span>B)The immunity they receive in the womb from their mother is temporary.

I believe this as the mother passes antibodies to the child through the last three months of pregnancy, and this is a passive immunity </span>
7 0
4 years ago
Read 2 more answers
a. What do the letters R and I represent ? b. What is the genotype of the pink-flowered snapdragons? c. Explain whether the alle
-Dominant- [34]

Answer:

a) R= allele for red colored flower

I= Allele for ivory flowers

b) Genotype of pink flowered plant: RI

c) Incomplete dominance

d) 100%

Explanation:

When the dominant allele is not able to fully mask the expression of the recessive allele in the heterozygous state, it is said to be incomplete dominance. The R and I alleles impart red and ivory color respectively to the flowers of the snapdragon plant. The heterozygous genotype "RI" imparts a pink color to the flowers and therefore, the alleles are said to exhibit incomplete dominance.

The genotype of red-flowered snapdragon plant = RR. The genotype of ivory flowered snapdragon plant= II. When a red-flowered snapdragon plant is crossed with an ivory flowered snapdragon plant, the progeny is heterozygous in nature with the "RI" genotype. The phenotype of the progeny is "Pink flower" since the R allele is incompletely dominant over the allele I.

5 0
3 years ago
The total number of genes in the human genome is___?
Alisiya [41]

Answer:

thirty thousand (30,000)

8 0
3 years ago
Read 2 more answers
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