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kotegsom [21]
2 years ago
10

A scientist is looking at a cell's membrane. She notices that the membrane is composed (primarily) of a certain type of macromol

ecule. These macromolecules are unique in that they are not composed of monomers, but instead resemble "hairpins" with fatty acid tails. This scientist is looking at _____.
Biology
1 answer:
Travka [436]2 years ago
7 0

Answer:

It's Hydrophilic

Explanation:

You might be interested in
8. Two rabbits are bred together. One is heterozygous for agouti coat
dusya [7]

Answer:

- Parental cross = Cch  x chch  

- F1 = 1/2 Cch (agouti coat); 1/2 chch (albino coat) >> 1:1 phenotypic ratio

Punnett  square:  

          ch         ch

C       Cch       Cch

ch    chch      chch

 

Explanation:

A heterozygous individual is an individual who has two different gene variants (i.e., alleles) at a particular <em>locus</em>. In this case, individuals having the "agouti coat" trait are heterozygous carrying both 'C' and 'ch' alleles. On the other hand, a homo-zygous individual has the same allele at a given <em>locus</em> (here, the 'chch' genotype associated with the albino phenotype). Therefore, as observed in the Punnett Square above, when a heterozygous parent is crossed with a homo-zygous recessive parent for a single gene, alleles segregate in the gametes of both parents so an expected 1:1 phenotypic ratio will be observed.

4 0
2 years ago
How do insects contribute beneficially to agriculture?
erastovalidia [21]
They pollinate plants, which saves farmers work. Insects such as bees and butterflies help to pollinate plants. 
4 0
3 years ago
Why is the frequency of recombinant gametes always half the frequency of crossing over?
kvv77 [185]
Crossing over occurs at the four-strand stage when two homologous chromosomes, each consisting of a pair of sister chromatids, are paired. Each crossover involves just two of the four strands and generates two recombinant strands.

Hope this helps!
3 0
3 years ago
Explain Gynecomastia in males.
PolarNik [594]

Gynecomastia is an increase in the size of the mammary gland in men. The condition can occur in one or both breasts. It starts as a small mass under the nipple, which can be sensitive. One breast can be bigger than the other. Its cause is an imbalance between the stimulatory effects of estrogen (female sex hormones) and the inhibitory effects of androgens (male sex hormones) in the breast tissue, when the first ones increase, or the second ones descend.

Gynecomastia is a problem relatively common in the population, and there are three prevalence peaks throughout life:

Newborns: Between 60 and 90% of newborns have gynecomastia, produced by the passage of maternal estrogens through the placenta. It is a transient gynecomastia that disappears in about 2-3 weeks.

Puberty: Gynecomastia in puberty affects mainly young people aged between 10 and 14 years, and is due to the transient and physiological increase in estrogen that occurs at this age.

Elderly: Is due to an increase in fatty tissue with a greater peripheral aromatization ( a process that occurs in adipose tissue and that involves the conversion of androgens into estrogens), a decrease in the production of testosterone by the testes and the use of drugs.

8 0
2 years ago
Type the correct answer in the box.
ivanzaharov [21]

Answer:

25 degree celcius

Explanation:

formula

(given degree Fahrenheit - 32)×5÷9

(77 - 32)× 5÷9

= 25°C

8 0
3 years ago
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