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Luden [163]
3 years ago
7

Kangaroos are mammals that lack a placenta. Therefore, they must have an alternate way of supplying the developing embryo with

Biology
2 answers:
bekas [8.4K]3 years ago
7 0

Answer: yolk sac

explanation:

the placenta does not develop for a long time so the alternate way of supplying the developing embryo is through the yolk sac which the embryo can receive nutrients and respiratory gas exchange through which the placenta will be formed later.

Vadim26 [7]3 years ago
3 0

Answer:

nutrients all mammals need nutrients

Explanation:

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The gene responsible for producing amyloid precursor protein (app) appears to explain the development of:__________
egoroff_w [7]

The gene responsible for producing amyloid precursor protein (app) appears to explain the development of Alzheimer disease.

<h3 />
  • A form of dementia that progresses is Alzheimer's disease. A condition that adversely impacts memory, thinking, and behavior is referred to as dementia. The modifications make daily life more difficult.  There are numerous possible causes of dementia, including diseases and brain traumas.  Sometimes there is no known cause. The condition is typically diagnosed in patients over the age of 65.

  • Alzheimer's disease is typically described as having an "early onset" or "younger onset" if it is discovered earlier. Alzheimer's has no known cure, but there are medications that can halt the disease's growth. Alzheimer's disease is a brain ailment that gradually impairs thinking and memory abilities as well as the capacity to do even the most basic tasks.  Additionally, psychological and behavioral changes are common in people with Alzheimer's.

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6 0
2 years ago
What is respiration?
ollegr [7]

☁️ Answer ☁️

annyeonghaseyo!

Your answer is:

"Respiration constitutes a series of enzyme-driven reactions that allow plants to turn the stored energy of carbohydrates made via photosynthesis into a form of energy they can use to power growth and metabolic processes."

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6 0
3 years ago
Read 2 more answers
Cocaine sometimes produces extreme alertness and an exaggerated awareness of environmental stimuli. This is because one of its e
Eva8 [605]

Answer:

The correct answer is- norepinephrine.

Explanation:

Norepinephrine is a hormone and also a neurotransmitter which is released from the adrenal medulla and with epinephrine it helps in generating the fight and flight response during the stress condition. Norepinephrine is synthesized from dopamine.

Cocaine binds to the structures which are known to regulate dopamine thereby it enhance the activity neurotransmitter norepinephrine which results in producing extreme alertness and exaggerated awareness and prepares our body for the stressful condition.

3 0
3 years ago
The cytoskeleton is an internal scaffolding used for cellular movement true or false
xeze [42]
It's true :)))))))wooo woo
6 0
3 years ago
The fruit fly Drosophila melanogaster has four pairs of chromosomes, whereas the housefly Musca domestica has six pairs of chrom
Greeley [361]

Answer:

8

Explanation:

The fly has only 3 pairs of somatic chromosomes, that means that only can combine 3 chromosomes. To calculate the combinations the exponential 2n it is used. In this case is 2 to the third power that is equal = 2 x 2 x 2 = 8

This fly also has a fourth pair, but this one is the sexual one, so the main function of this gene is to give the sex to the offspring.

7 0
3 years ago
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