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Mice21 [21]
3 years ago
9

A white patch on the chest is recessive, notice both critters have a white patch. What are the odds that their offspring will ha

ve a white patch?
Select one:
a. 25%
b. 100%
c. 50%
d. 0%

Biology
2 answers:
Oxana [17]3 years ago
6 0
100% because they both have a white patch
notka56 [123]3 years ago
4 0

b. 100%

Explanation:

they both have the recessive gene

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Diffusion, Osmosis and Enzymes
Nana76 [90]

The given statements can be matched as following:

a)The diffusion of water from a high concentration to a low concentration  - Osmosis

b)Lowers the amount of energy needed to perform chemical reactions - Enzymes

c)When you breath O2 passes into your blood stream while CO2 passes out of your blood stream -Simple Diffusion

d)Involved with, but does not become a part of chemical reactions -Enzymes

e)Small molecules with no charge can move through semi-permeable membranes by this process- Simple Diffusion

Explanation:

a) Osmosis is generally defined as the process by which water is transported from a region of Higher concentration to the region of Lower concentration.

b) Enzymes are well known to reduce the amount of energy required or needed for a chemical reaction to take place.

c)The process by which oxygen passes through our blood stream and carbondioxide passes through the other is known as simple diffusion process.

d) Enzymes are ones that actively gets involved in the chemical reaction but they will never become a part of that chemical reaction.

e) Diffusion is the process by which very small molecules that carries no charge moves through semi permeable membrane.

5 0
3 years ago
Which three scientists directly contributed evidences for the cell theory?
ValentinkaMS [17]
The three scientist are Matthias Schleiden<span>, </span>Theodor Schwann<span>, </span>Rudolph Virchow<span> 4.
Hope it helped!</span>
6 0
3 years ago
Species A has a diploid number of 42 chromosomes, while species B has a diploid number of 48 chromosomes. Give the chromosome nu
Arada [10]

Answer:

a. autotriploid of species A: 63 chromosomes

b. autotetraploid of species B: 96 chromosomes

c. allotriploid from species A and B: 1) 66 chromosomes and 2) 69 chromosomes

Explanation:

<u>For a.</u>

this species will have 3 haploid sets of chromosomes ('tri' means 3)

one haploid set = 21

21 × 3 = 63 chromosomes

<u>For b.</u>

this species will have 4 haploid sets of chromosomes ('tetra' means 4)

one haploid set = 24

24 × 4 = 96 chromosomes

<u>For c.</u>

there are two ways to do this:

1) two sets of chromosomes from species A and one from species B

42 + 24 = 66 chromosomes

2) one set of chromosomes from species A and two from species B

21 + 48 = 69 chromosomes

Hope that answers the question, have a great day!

5 0
3 years ago
What is the significance of a chemical formula?​
Allushta [10]

Answer:

<em>The </em><em>significance</em><em> of</em><em> </em><em>chemical</em><em> </em><em>formula</em><em> is</em><em> </em><em>that </em><em>it </em><em>tells </em><em>us </em><em>a </em><em>lot </em><em>about </em><em>the </em><em>chemical</em><em> </em><em>reaction</em>

<em>like </em><em>the </em><em>name </em><em>of </em><em>elements</em><em> </em><em>involved</em><em> in</em><em> it</em><em>,</em><em> </em><em>number</em><em> of</em><em> </em><em>atom </em><em>of </em><em>each </em><em>element</em><em> </em><em>and </em><em>it </em><em>also </em><em>shows</em><em> </em><em>that</em><em> </em><em>which </em><em>type</em><em> of</em><em> </em><em>reaction</em><em> is</em><em> </em><em>going</em><em> on</em>

<em>like </em><em>exothermic</em><em> </em><em>and </em><em>endothermic</em><em>,</em><em> </em><em>combination</em><em>,</em><em> decomposition</em><em> </em><em>etc </em>

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

4 0
3 years ago
In numerous studies, treatment of prion preparations with ionizing and UV radiation does not reduce transmission of disease; how
mel-nik [20]

Answer:

A. Prions do not contain genetic information, which is affected by ionizing radiation.

B. Denaturants may affect the tertiary structure of prions.

C. Prions are proteins.

Explanation:

Prions are the proteinaceous infectious particles that cause many degenerative diseases of neurons in both animals and humans. They consist of only protein and no DNA or RNA. Due to the absence of DNA or RNA as genetic material, these infectious particles are resistant to ionizing radiation. Ionizing radiations affect nucleic acids of pathogens to destroy them.

Denaturation of proteins affects their secondary and tertiary structures and leave them non-functional. Denaturation may be caused by changes in temperature, pH, disturbance of hydrogen bonds, etc. Therefore, to destroy prions, they need to be denatured.

7 0
3 years ago
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