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sattari [20]
4 years ago
8

What was the first artificial satellite placed in orbit around the Earth? (3 points)

Biology
1 answer:
olga55 [171]4 years ago
5 0

The answer would be Sputnik 1. This was a Russian space probe launched during the Space Race between the Soviet Union and the United States.

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A pregnant mouse is exposed to high levels of a chemical. Many of the mice in her litter are deformed, but when they are interbr
MatroZZZ [7]

Answer:

The correct answers are- a) In the deformed mice, somatic cells but not germ cells were mutated and  d) The toxic chemical affects development but is not mutagenic.

Explanation:

Mutation in the somatic cells do not pass in the offsprings and the only mutation in the germ cells can pass to the offspring because offspring are produced by the fertilization between different germ cells. Somatic cell mutation can only cause deformation in individuals but their offspring will be like normal offsprings.

The other cause may be that the toxic chemical used don't cause any mutation but just affect the development of mice so in this case genetic material will remain in normal state in deformed mouse and they will able to produce normal offsprings. So the right answer is a and d.

4 0
3 years ago
Read 2 more answers
If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food t
frutty [35]
The bacteria multiply and if they multiply enough you can finally see them.
4 0
3 years ago
The embryo's development as seen here represents which processes in the development of any multicellular organism?
levacccp [35]

Answer:

B) mitosis and cell differentiation.

Explanation:

Embryonic development of a multicellular organism has several stages.

In principle, cell multiplication occurs through the mitosis process in which each cell produces two identical daughter cells, in this phase the number of cells that make up the embryo is gradually increased.

The next phase corresponds to the cell differentiation in which by means of modifications in the gene expression, the cells acquire the morphology and the functions of a specific cell type and different from the rest of cell types of the organism

7 0
3 years ago
Janine’s hands are larger than her father’s hands. Which explanation can account for the difference in hand size between father
suter [353]

Answer:

D or b

Explanation:

Choose between those

5 0
3 years ago
To which group does sugar belong? choose<br><br> carbohydrate<br> fat<br> protein<br> vitamin
svet-max [94.6K]
It’s carbohydrate that is your answer
8 0
3 years ago
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