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3 years ago

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When Jacob starts running, his legs move faster and his heart rate increases. Which types of muscles are involved in these chang

es

1 answer:

Andru [333]3 years ago

5 0

The answer is heart strings

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A 0.2 M solution of NaCl contains ________ g of NaCl in 1 l of ________.

Maksim231197 [3]

Answer:

11.7 g in 1 L of water.

Explanation:

Molarity (M) or Molar concentration is a measure used in chemistry for solutes in a solution.

It is defined as mol/ L (number of moles per litre).

0,2 M means we have 0,2 mol/ L

In order to know how many grams this means we need to look up the molecular weight of the solute. In this case NaCl: 58.443 g/mol

$\frac{1 mol NaCl}{58.443 g}$ = $\frac{0.2 mol}{X g}$

X= $\frac{(0.2 mol x 58.433 g}{1 mol}$

X= 11.69 g

The solution has 11.69 g of NaCl in 1 L of water since its an adequate polar solvent for NaCl dissolution.

8 0

3 years ago

How does the bluegill example illustrate creativity in designing experiments?

aleksklad [387]

It shows that a scientist can be creative because they used the fish's coughing technique to search for contaminated water.

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3 years ago

The type of therapy based on the premise that the mind's activity depends on the brain and is genetically determined is ______ t

Naddika [18.5K]

The type of therapy based on the premise that the mind's activity depends on the brain and is genetically determined is called the cognitive therapy. It is a type of psychotherapy that commonly used as one of the therapeutic approaches for cognitive behavioral therapies. It is based on the idea that the degree of what we feel is determined by what we are thinking. Illnesses such as depression are though to be a result of wrong beliefs and thoughts. In this therapy, one goal is to correct wrong beliefs of a person in order to improve the emotional state and the perception of this person to certain events.

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3 years ago

Which process takes place in meiosis but not in mitosis

Dvinal [7]

Answer:

The answer is DNA replication and crossing over.

Explanation:

Both meiosis and mitosis are reproduction processes taking place in humans. But there is some difference between these two processes. In meiosis, parent cell produces four daughter cells which are not identical to each other.

In meiosis, when DNA replicates it produces four haploid daughter cells in which the number of chromosomes in half. Moreover crossing over and separation of chromosomes also occurs to produce sperms and egg cells. While in mitosis crossing over and DNA replication is absent.

8 0

3 years ago

How many possible open reading frames (frames without stop codons) are there that extend through the following sequence? 5'... C

fenix001 [56]

Answer:

There are 4 reading frames without stop codons.

Explanation:

1) To find the possible reading frames you need to separate your sequence in codons (trios) for the 5'-> 3' sense, first, excluding the first nucleotide, then excluding 2 nucleotides and then not excluding nucleotides.

5'... C TTA CAG TTT ATT GAT ACG GAG AAG G... 3' NO STOP CODON

5'... CT TAC AGT TTA TTG ATA CGG AGA AGG... 3' NO STOP CODON

5'... CTT ACA GTT TAT <u>TGA</u> TAC GGA GAA GG... 3'

2)Then you find the complementary sequence (which you already have)

3'... GAA TGT CAA ATA ACT ATG CCT CTT CC... 5'

3'... GA ATG TCA AAT AAC TAT GCC TCT TCC... 5'

3'... G AAT GTC AAA TAA CTA TGC CTC TTC C... 5'

3) Next, you have to obtain the reverse complementary

CCT TCT CCG TAT CAA TAA ACT GTA AG NO STOP CODON

CC TTC TCC GTA TCA ATA AAC TGT AAG NO STOP CODON

C CTT CTC CGT ATC AAT AAA CTG <u>TAA</u> G

4)Now you need to find start (AGT in terms of DNA) and stop codons(<u>TAA</u>, <u>TAG,</u> <u>TGA</u>, also in terms of DNA), in 5->3 and de reverse complementary.

<em />

<em>As you can see, you have for open reading frames that lack of stop codon, unfortunately, they also lack of AGT, the start codon.</em>

I added a table where you can find thestart and stop codons as well as the proteins that they translate to in terms of RNA.

I hope you find this information interesting and useful, good luck!

8 0

3 years ago