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matrenka [14]
3 years ago
15

The heads of the phospholipid are

Biology
2 answers:
Serggg [28]3 years ago
8 0

Answer: Hydrophilic

Explanation:

They have a negatively charged polar head

Dmitriy789 [7]3 years ago
8 0

Answer:

hydrophobic

Explanation:

idk that's just the answer jajaja

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I observe that squirrels that live in the southeastern United States are much thinner than squirrels that live in the northeaste
stiv31 [10]

Answer:

No, it is not a scientific theory.

Explanation:

  • A scientific theory is a proposition that is made to explain the various phenomena that are occurring in nature and it is supported by experiments that have repeatability and well-analyzed results.
  • Scientific theories are usually tested in experiments under controlled conditions and verified as well.
  • In the given situation, the theory made by the observer is not being tested through any experimentation or quantification and therefore, it is just a hypothesis and not a scientific theory.

6 0
3 years ago
What is the function of Queen Bee?​
never [62]

Explanation:

HONEY BEE QUEEN'S ROLE IN THE COLONY

The Queen Bee plays a vital role in the hive because she is the only female with fully developed ovaries. The queen's two primary purposes are to produce chemical scents that help regulate the unity of the colony and to lay lots of eggs.

3 0
2 years ago
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Which of the following increases genetic diversity in sexually reproducing organisms. Heterozygous crosses, crossing over, mitos
Bingel [31]
Heterozygous crosses
4 0
3 years ago
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In a dihybrid cross of two heterozygous individuals, you expect a 9:3:3:1 phenotypic ratio in the offspring, but observe a ratio
almond37 [142]

Answer:

e. Epistatic interaction of the two genes

Explanation:

The 9:7 ratio is typical of the Duplicate Recessive Epistasis.

The expected phenotypic ratiio of the offsrping of a dihybrid cross is:

9 A_B_

3 A_bb

3 aaB_

1 aabb

In the Duplicate Recessive Epistasis, the A_bb, aaB_ and aabb individuals all have the same phenotype, making for the ratio 9:7. What those three genotypes have in common is that in all of them at least one of the two genes  is homozygous recessive (either <em>aa</em> or <em>bb</em>).

This usually happens one the products of genes A and B are enzymes of the same metabolic pathway.

Whenever both A and B are present, the pathway can produce the final product and a certain phenotype. However, if any of the dominant alleles is missing, the enzyme is not produced and therefore the final product of pathway is not produced, giving the other phenotype.

3 0
3 years ago
Mucous membranes provide a ____________ barrier at body openings.
butalik [34]
<span>Mucous membranes provide a mechanical barrier at body openings. They also line the respiratory, GI, urinary, and reproductive tracts. Mucous membranes secrete mucus, a slimy substance that traps pathogens. The membranes also have hair-like cilia.</span>
8 0
3 years ago
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