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Tcecarenko [31]
3 years ago
13

Describe the investigations and experiments that produced the evidence that led to our current version of cell theory

Biology
1 answer:
Nataly [62]3 years ago
6 0

Answer: examination of bark of tree by Robert hook 1665 also experiment conducted by MJ.schleide1838 in plant as botanist

Also experiment conducted by Theodore Schwan in animal as zoologist 1839

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Selective breeding occurs when organisms are chosen to breed because they possess specific traits. For example, selective breedi
Vadim26 [7]

Answer:

a human being

Explanation:

Selective breeding -

It is the method of selection , where the human develops the new organism having some characteristics which they desire , is known as selective breeding .

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hence ,

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3 years ago
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Identify the dependent and independent variable in each of the examples below: 1. White mice are fed a treat every time they man
Andrei [34K]

Answer:

1. IV: Time the Bell is rang DV: Time it takes to learn the task

2. IV: Nitrogen fertilizers DV: Diversity of fish

3. IV: Time of radiation DV: Percentage of successful germination

Explanation:

The independent variable of an experiment refers to the variable that the experimenter manipulates or changes in order to effect a measurable response in the dependent variable while the dependent variable is the variable that responds to the changes made to the independent variable.

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2. In scenario 2, the USE OF NITROGEN FERTILIZER is the independent variable while the DIVERSITY OF FISH is the dependent variable.

3. In case 3, the TIME OF RADIATION is the independent variable while the PERCENTAGE OF SUCCESSFUL GERMINATION is the dependent variable.

8 0
3 years ago
A biologist counts 1,000 in a 200 acre area of grasslands. what is the population density
zimovet [89]
200,000 is the population density.
5 0
3 years ago
Which nucleotide bases form base pairs in DNA?
taurus [48]

Answer:

Each base pair is formed from two complementary nucleotides (purine with pyrimidine) bound together by hydrogen bonds. The base pairs in DNA are adenine with thymine and cytosine with guanine.

Explanation:

6 0
4 years ago
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