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Advocard [28]
2 years ago
9

gg Calcium ions are released into the myofibrils by the __________, when activated by an impulse from a motor neuron.

Biology
1 answer:
Ivan2 years ago
8 0

Answer:

sarcoplasmic reticulum

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Linda and Ben request prenatal genetic testing to determine if their unborn child has Down syndrome. Which of the following tool
Evgesh-ka [11]

Answer:

Karyotype

Explanation:

A karyotype is a picture of all the chromosomes in an individual. These images are analyzed by geneticists to identify structural changes in the chromosomes or to identify differences in number as is the case for Down syndrome.

Karyotyping is used to identify certain genetic diseases associated with chromosomal aberrations. This is associated with the field of cytogenetics.

7 0
3 years ago
a cell has 10% salt solution and 90% water solution,while the beaker has 30% salt solution and 70% water solution. what happens
Archy [21]
If it is a red blood cell than the cell will shrivel because the water will dissolve out of the cell    ( because more water flows out of the cell than back into the cell the cell Shrinks )
8 0
3 years ago
In photosynthesis, plants use carbon from _____ and hydrogen from _____to make sugar
adoni [48]
I think its the atmosphere ?????
6 0
3 years ago
The fusion of a _______________ and a _________________ produces a zygote with 46 (2n) chromosome number.
Nonamiya [84]

Answer:

The fusion of a egg and a sperm produces a zygote with 46 (2n) chromosome number.

3 0
3 years ago
Describe the ways that humans both positively and negatively affect the environment and biodiversity.
Alexxandr [17]

Answer:

<em>Human interaction within ecosystems can have both positive and negative impacts on the levels of biodiversity. The impact of an increase in the human population , including increased waste, deforestation , peat bog destruction and global warming has been to reduce biodiversity .</em>

<em>hope</em><em> </em><em>it helps u</em><em> </em>

6 0
3 years ago
Read 2 more answers
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