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Dahasolnce [82]
3 years ago
12

What is a test variable? Give an example

Biology
1 answer:
babunello [35]3 years ago
4 0
If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life-expectancy, then: The independent variable is the amount of vitamin that is given to the subjects within the experiment. This is controlled by the experimenting scientist.
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The following events are part of endochondral ossification. In which order do they occur?
devlian [24]

The order is calcification of matrix  >> cells differentiate into osteoblasts >> formation of the primary ossification >>  osteoclasts break down the spongy bone >> formation of the secondary ossification (5,3,1,2,4). It is a fundamental process.

<h3>What are osteoblasts?</h3>

Osteoblasts are cells of the bones, which act to generate bone matrix and modulate the process of mineralization of the skeleton.

Endochondral ossification refers to the mechanism through which the cartilaginous bones generate longitudinal growth.

This mechanism (endochondral ossification) is fundamental during fetal/embryo development.

Learn more about endochondral ossification here:

brainly.com/question/5325975

5 0
2 years ago
The disease allele for a certain disease is S. The normal allele is s. The disease is observed when a person has at least one co
yan [13]
I believe is recessive
7 0
3 years ago
Based on the diagram below, which part of an atom has the greatest mass?
Juli2301 [7.4K]
The nucleus will have the greatest mass. Among the 3 kinds of subatomic particles, electrons are the lightest (by several orders of magnitude), protons and neutrons are much closer is magnitude, though neutrons are slightly heavier. However, in the diagram, the nucleus contains both the neutrons and the protons, so its combined mass would be heavier than either the neutrons alone or the protons alone.
7 0
3 years ago
Read 2 more answers
Biology pls help!!!!! Will give brainlest
myrzilka [38]

Answer:

Organism with AABBCCDD genotype will produce only one type of gamete, ABCD and the organism having the genotype AaBbCcDd will produce 16 types of gametes.

This is a percentage of 3.1%

Explanation:

8 0
2 years ago
Which organelle contains DNA and controls the activity in the cell?<br> ОВ<br> Ос<br> OD<br> ОЕ
IrinaK [193]

Nucleus can be defined as a large organelle found in the Eukaryotic cells and it is also  know as the cell's command center,thus it controls the activity of the cells

Explanation:

  • The answer to the above question is (c )nucleus. During the cell cycle the nucleus of the cell mediates the replication of the of the DNA and controls the gene expression.
  • The nucleus contains a structure which is known as nucleolus and which is made up of protein and ribonucleic acid(RNA)

7 0
3 years ago
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