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mars1129 [50]
3 years ago
9

Which of the following is true about elements?

Biology
2 answers:
svp [43]3 years ago
5 0

Answer:

D is the correct answer. Please follow me

ch4aika [34]3 years ago
3 0
D - elements combine to form compounds in organisms and no living substances .
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The chemical that promotes phototropism is _____.
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A single-stranded DNA sequence is attached to a microarray chip, and fluorescently labeled complementary RNA (cRNA) fragments (p
Darya [45]

Answer:

Option A , Genome

Explanation:

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3 years ago
When studying animal behavior, the distribution of organisms within a choice chamber can be studied to identify animal preferenc
Komok [63]

Answer:

c

Explanation:

Random distribution of the Isopods should be 50/50 in A and B.

Chi-square = \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency

Chamber         O                    E             Chi-square

  A                   18                   10             \frac{(18 - 10)^2}{10} = 6.4

  B                    2                    10             \frac{(2 - 10)^2}{10} = 6.4

<em>Total Chi-square </em>= 6.4 + 6.4 = 12.8

<em>Degree of freedom</em> = 2 - 1 = 1

<em>Tabulated Chi-square</em> (α = 0.05) = 3.8415

The calculated Chi-square exceeds the critical value, hence, it is significant and not due to random.

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3 years ago
Each answer option below lists terms that classify cell types according to their developmental potential. Which of the options l
umka21 [38]

Answer:

The correct answer is: (A) totipotent, pluripotent, multipotent.

Explanation:

Totipotent cells can differentiate into any type of cell, from the ones that make up the embryo to the ones that form extra-embryonic cells. Pluripotent cells can transform into any type of body cell (but not cells for the placenta). Multipotent cells can develop into a few types of cell from the same lineage.

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