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natita [175]
3 years ago
9

A mature female may have its body cavity full of black and white eggs. the black portion of the egg contains the living embryo.

the white portion is yolk, containg stored food. when placed in water the eggs will float with the light side down. what is the advantage of this?
Biology
2 answers:
34kurt3 years ago
5 0

Answer:

heterosynthesis

Explanation:

- synthesis of yolk proteins carried out by other non-germ cells: is panoistic ovaries, fat body elsewhere in the organism is producing proteins, carried towards and deposited in the oocyte

- labelled precursor with ferretin, when looked at under microscope it shows up black

- electrophoresis, proteins migrate along gel in an electric current, proteins in body fluid of organism were identical to the proteins within the yolk of the oocyte

- immunological methods using antibodies, more sensitive way of detecting yolk-protein-like proteins in the body fluid

adoni [48]3 years ago
4 0

This might have an evolutionary advantage as to why the egg behaves such. Presumably, this can help the yolk develop leaving it away from any inconvenient circumstance

Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
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The sickle-cell allele is pleiotropic (that is, it affects more than one phenotypic trait). Specifically, this allele affects ox
butalik [34]

Answer:

adaptations are compromises

Explanation:

The pleiotropic gene involved in sickle-cell anemia is an example of heterozygous advantage. This means that the heterozygous genotype is favourale over other two genotypes (recessive homozygous and dominant homozygous). Eventhough it has harmful effect (sickle cell disease carrier) heterozygous genotype enables resistance to infection (malaria) and that is why this genotype is still favourable by natural selection. This phenomenon is evidence of compromise between harmful ad benefit.

4 0
3 years ago
What is true about the function of the electron transport system (ETS)?
FrozenT [24]

The correct answer is the last option.

The first option does not make sense as the electron transport chain makes the most ATP from the whole ATP synthesis cycle including glycolysis and the Kreb's Cycle. It also does not make NADH, but instead splits NADH into NAD- and H+. The H+ are used later to make ATP.

The second option also does not make sense as a "lysosome" is a digestive "pocket" in the cell, used for taking in and digesting food for the cell.

The third option also does not make sense as it does not produce NADH and is not during glycolysis. The electron transfer chain breaks up NADH and FADH2 and is the last step in the ATP synthesis process, after glycolysis and Kreb's Cycle.

The last option is correct. The electron transfer chain has the ability to make 34 molecules of ATP (in theory; so in real-life this does not always happen). The electron transfer chain does break down several compounds derived from glucose in a series of chemical reactions that do occur in the cristae of the mitochondrion.

8 0
2 years ago
Read 2 more answers
A benefit to applying SQRW to your reading is faster reading abilities
elena-s [515]

Answer:

False. SQRW does not increase reading speed.

Explanation:

SQRW stands for Survey, Question, Reading and Writing. SQRW is a four-step strategy for reading and note-taking from a chapter in a material to be read. The SQRW strategy does not make for faster reading abilities, rather it makes for a more efficient reading ability The four steps include:

  1. Survey: This involves taking a quick broad glance at the chapter to be read, including the title, introduction, headings, images, summary or conclusion. It helps one to recall previous knowledge on the topic and prepares one for new learning.
  2. Question: As one reads, questions are formed in the mind, this helps the reader to stay focused, and gives the reader a purpose for the reading. It is helpful to turn each heading into a question
  3. Read: The information following each heading is read, to find out the answers to the questions formed earlier for each head
  4. Write: Each question and its answer are written down and reread to be sure that each answer is legible and contains all the important information needed to answer the question.
5 0
2 years ago
An individual's major depressive disorder is most likely to be characterized by:________
Oksana_A [137]

An individual's major depressive disorder is most likely to be characterized by a constant sense of melancholy or a lack of interest in external stimuli.

<h3>What is depressive disorder?</h3>

Depressive disorder is a mood disorder characterized by persistent sorrow and loss of interest. Clinical depression, often referred to as major depressive disorder, has an impact on your emotions, thoughts, and behavior and can result in a variety of mental and physical problems. You could periodically feel like life isn't worth living and find it difficult to go about your everyday chores.

You can't suddenly "snap out" of depression; it's more complicated than a bout of the blues. Depression could require long-term therapy. However, don't give up. The majority of depressed people experience less severe symptoms thanks to medication, counseling, or both.

To learn more about depressive disorder with the help of given link:

brainly.com/question/12743811

#SPJ4

5 0
1 year ago
What happens in the small intestine?
N76 [4]

Answer:

A. Water and nutrients are absorbed.

Explanation:

About 90% of water and nutrients digestion occurs in small intestine. Therefore the answer to thşs question is A.

8 0
3 years ago
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