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natta225 [31]
2 years ago
14

What is the main difference between the null and the research hypothesis? What is the importance of assuming the null hypothesis

is true?
Biology
1 answer:
Ksivusya [100]2 years ago
8 0

Answer:

The null hypothesis is a general statement that states that there

is no relationship between two phenomenons under

consideration or that there is no association between two groups.

A hypothesis, in general, is an assumption that is yet to be proved

with sufficient pieces of evidence.

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An Earth scientist is testing how vanous soil mixtures affect plant growth. She begins with 10 soil types. For each mixture, she
nevsk [136]

The correct answer to my knowledge would be 45.

Assuming that the 10 soils are each represented by A, B, C, D, E, F, G, H, I, J.

A can combine with 9 others as: AB AC AD AE A F AG AH AI AJ

B can combine as: BC BD BE BF BG BH BI BJ

C as: CD CE CF CG CH CI CJ

D as: DE DF DG DH DI DJ

E as: EF EG EH EI EJ

F as: FG FH FI FJ

G as: GH GI GJ

H as: HI HJ

I as: IJ

Once you add all the combinations together, you get 45.

Hoping this helped you!

3 0
3 years ago
What is the molarity of 40.0 grams of sodium hydroxide in 1.50 L of solution
Oksi-84 [34.3K]

Formula: Molarity = <span>Amount of substance (in moles)/Volume of solution (in litres)</span>

40.0⋅g<span>/40</span>⋅<span>g⋅</span><span><span>mol</span><span>−1</span></span> ÷ (1.50⋅L) = 0.667 <span>−1</span>  sodium hydroxide.

 

The Molarity of 40 grams of Sodium Hydroxide in 1.50L of solution is 0.667 mol*L-1

<span> </span>

6 0
3 years ago
4. A bacterial cell is prokaryotic, while the protist, Euglena, is eukaryotic. Which structure is present
dmitriy555 [2]

Answer:

There are a couple different possible answers, since there are multiple different structures that are present in both types of cells. So you have to make the choice of what to put.

The structures that prokaryotic and eukaryotic cells have in common are: plasma membrane, ribosomes,  and cytoplasm

3 0
3 years ago
Read 2 more answers
Ribosomes provide the scaffolding on which tRNAs interact with mRNA during translation of an mRNA sequence to a chain of amino a
vampirchik [111]

Answer:

a. True

Explanation:

Ribosomes are ribonucleoprotein complexes composed of RNA and proteins, which have two main roles 1-decode the message of the messenger RNA (mRNA) molecule and the formation of peptide bonds in the protein. For this purpose, each triplet of nucleotide bases or 'codon' in the mRNA sequence is used to assemble specific amino acids in the nascent polypeptide chain. Although different, both prokaryotic ribosomes and eukaryotic ribosomes are composed of two subunits: one small subunit that decodes the mRNA into a specific amino acid chain, and one large subunit that forms the peptide bonds in the polypeptide chain. Each ribosomal subunit is in turn composed of ribosomal RNAs and proteins. These ribosomal RNAs act as scaffolds by combining with proteins that assemble into ribosomes (i.e., small and large ribosome subunits).

8 0
3 years ago
______ happens when rain, snow, sleet, and hail that falls from the clouds to the earth’s surface.
Rudik [331]

Answer:

precipitation

Explanation:

4 0
4 years ago
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