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Mekhanik [1.2K]
3 years ago
7

Helpppppppppdhhdudhdjdjdnndj

Biology
2 answers:
EastWind [94]3 years ago
8 0

Answer:

option D is correct

Explanation:

mark me as brainlist

antiseptic1488 [7]3 years ago
7 0

Answer:

D

Explanation:

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According to the World Health Organization, persistent organic pollutants (POPs) are found in nearly all tested organism tissues
olga55 [171]

Answer:

POPs are lipophilic, which means that they can be stored in fatty tissues for long periods of time.

Explanation:

8 0
2 years ago
_CO2 + _H20 -> _C6H1206+ __O2
iVinArrow [24]

Answer: 6CO2 + 6H2O -> C6H1206 + 6O2

Explanation: This is a balanced chemical equation for photosynthesis. In photosynthesis, six molecules of carbon dioxide react with six molecules of water in the presence of sunlight to form one molecule of glucose and six molecules of oxygen. Photosynthesis is a process by which green plants manufacture their own food using sunlight. Plants cells have an organelle known as chloroplast which contains chlorophyll a green pigment that traps energy from the sun. The energy trapped by the chlorophyll is used by plants in the presence of carbon dioxide and water to drive the synthesis of glucose with the release of oxygen as the by-products.

7 0
3 years ago
In the block to polyspermy, entry of the sperm's contents causes ________ levels in the oocyte's cytoplasm to rise, triggering t
crimeas [40]

In the block to polyspermy, entry of the sperm's contents causes calcium ion levels in the oocyte's cytoplasm to rise, triggering the cortical reaction.

In biology, polyspermy describes the fertilization of an egg by more than one sperm. Diploid organisms normally contain two copies of each chromosome, one from each parent.

The cell resulting from polyspermy, on the other hand, contains three or more copies of each chromosome—one from the egg and one each from multiple sperm. Usually, the result is an unviable zygote. This may occur because sperm are too efficient at reaching and fertilizing eggs due to the selective pressures of sperm competition.

The cortical reaction is a calcium-dependent exocytotic process in which the content of secretory granules is released into the perivitellin space immediately after fertilization, which serves to prevent polyspermic fertilization.

Learn more about  polyspermy here : brainly.com/question/4537960

#SPJ4

8 0
1 year ago
What would be a consequence of a person having na levels in the blood and interstitial fluids that are well below normal?
Vladimir79 [104]

Consequence of a person having Na levels in the blood and interstitial fluids is that Neurons would not be able to undergo normal action potentials.

Nausea and vomiting. Lethargy, or low energy. Headache and confusion. Mental status changes. Normal motion capacity reaching the end of the axon. while an movement potential reaches the quit of an axon, vesicles fuse with the plasma membrane and launch neurotransmitter into the synaptic cleft.

At the peak of the action capability, two methods occur concurrently. First, a number of the voltage-gated sodium channels begin to near. 2d, many more potassium channels open, allowing wonderful fees to depart the mobile. Neurotransmitter is released from nerve ending when something must be excited or inspired , however when the task is carried out the neurotransmitter needs to be eliminated, otherwise the receptor may be in continuous nation of excitation which can be harmful.

Disclaimer:- Your question is incomplete, please refer below for complete question

What would be a consequence of a person having Na+ levels in the blood and interstitial fluids that are well below normal?

A) Neurons would all be depolarized.

B) Neurons would not be able to undergo normal action potentials.

C) Action potentials would occur with greater frequency.

D) Neurons would remain refractory following closure of voltage-gated sodium channels.

E) K+ channels would open to compensate for changes in membrane potential.

Hence the answer is option B Neurons would not be able to undergo normal action potentials.

Learn more about blood here:-brainly.com/question/920424

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5 0
1 year ago
What was the reason for dividing each cylinder into six discs?​
timofeeve [1]

Answer:

more surface area

Explanation:

dividing the cylinder into smaller pieces allows for more surface area, allows substance to penetrate more of the cylinder

3 0
2 years ago
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