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Vladimir79 [104]
3 years ago
11

Oxygenated blood reaches the fetus through the __________.

Biology
1 answer:
Gala2k [10]3 years ago
3 0
Through the umbilical vein.
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PLEASE HELP ASAP!!!! CORRECT ANSWERS ONLY PLEASE!!!!
olganol [36]
The answer to this is the last option i think
8 0
2 years ago
Albert needs to determine the force of gravity on a 250 g ball. The force of gravity on a 1000 g ball is about 10 Newtons.
Savatey [412]
(250/1000)*10=2.5 answer is D
7 0
3 years ago
I need to know the hypothesized enzyme
worty [1.4K]

Answer:

Hypotheis:

<em>If high amounts of product in the samples, '+++' , correlates with optimal temperatures and pH for enzyme activity, then...</em>

  • <u>A- Pepsin</u>
  • <u>B- Amylase </u>
  • <u> C- thermophilic enzyme</u>

Explanation:

Enzymes are specialized proteins that function as biological catalysts- <u>they speed up chemical reactions.</u> As proteins, these are susceptible to changes in temperature and pH- they function best at optimal values for both conditions, but can be denatured, rendering them inactive at relative extremes.

Each enzyme provided has its own optimal temperature and pH values.

  • Thermophilic enzymes are usually found in regions characterized by high temperatures. They show high thermostability, and do not become denatured at high temperatures- they thrive, and do not function well at lower temperatures.
  • Amylase is a hydrolase digestive enzyme found in the mouth, that acts on polysaccharides like starch to break 1,4  glycosidic bonds between glucose molecules. It works best at a physiological (neutral) pH and temperatures (around 37°)
  • Pepsin, another digestive enzyme, is a peptidase that breaks down proteins into peptide molecules. It is found in the stomach lining, where the pH  is typically low i.e. acidic due to the hydrochloric acid in digestive juices.

Thus from the table A- pepsin, B- Amylase and C- thermophilic enzyme can be hypothesized.

6 0
2 years ago
If Gray is dominant over black on flies. What are the 2 possible genotypes of Gray flies?cells
joja [24]

Answer:Gg and Gg

Explanation:G - Grey

g - Black flies

G is dominant over g . GG × gg

3 0
3 years ago
Read 2 more answers
An attraction between molecules can be called a _______.
tiny-mole [99]
<span> Intermolecular forces, also known as, IMFs.

Hope this helps!:D
</span>
8 0
3 years ago
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