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mamaluj [8]
3 years ago
10

The exchange of gasses between blood in systemic capillaries and tissue cells is termed:

Biology
1 answer:
RSB [31]3 years ago
8 0
Pretty sure its Internal Respiration
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In a certain breed of plants, dark green is determined by the dominant gene 'G' and light green is determined by the recessive g
oksian1 [2.3K]

Answer: If you crossed the parents of GG and gg all plants would be green because if the parent with two dominate genes could only give a dominant G to each child all children would have a dominate G gene therefore all children on this cross would be dark green.

8 0
3 years ago
How does the respiratory system affect the cardiovascular system
Anit [1.1K]

Blood is the fuel that keeps you going! Oxygenated blood is brought to organs and tissues via the arteries, while veins bring deoxygenated blood back to the heart to be replenished. The point is, without the respiratory system your blood would be useless.

The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.


3 0
3 years ago
Read 2 more answers
18. RNAi is a technique that silences genes by targeting them and degrading their mRNA. How can this technique be used in scient
MrRissso [65]

Answer:

B

Explanation:

RNAi is a cellular mechanism for post-transcriptional gene silencing. After transcription of a gene into mRNA, small interfering RNA (siRNA) and microRNA (miRNA) can target the mRNA to form dsRNA. This mRNA then becomes a target of ribonucleases such as the Dicer that break it apart. These mRNA, therefore, do not reach the cytoplasm for translation by ribosomes. This mechanism is hence harnessed and manipulated by scientists to study genes by silencing them.

6 0
3 years ago
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What happens when a resting neuron's membrane depolarizes? A. There is a net diffusion of Na⁺ out of the cell. B. The equilibriu
m_a_m_a [10]

The correct option is (C) The neuron’s membrane voltage becomes more positive.

The resting neuron has a voltage across its membrane which is called the resting membrane potential. There is a concentration gradient of ions across the membrane when the neuron is in the resting state.

Inside the membrane the concentration of  K⁺ and organic anions are more. Outside the membrane the concentration of Na⁺ is more. The membrane is much more permeable to K⁺  than Na⁺ .

The cell’s inside is more negative than the outside when the membrane is hyperpolarized. In neurons the resting membrane potential is close to the equilibrium potential for K⁺.

Learn more about resting membrane potential here: brainly.com/question/15459255

#SPJ4

7 0
1 year ago
List the sequence of events that occur as the avocado seed germinates.
Anit [1.1K]

Answer: The sequence of events of avocado seed germination includes:

Water absorption --> enzyme activation --> radicle emerges --> lengthening of the hypocotyl --> growth of epicotyl and plumule development --> shrinking of the cotyledons.

Explanation:

Germination is defined as all the changes that occurs when a seed embryo resumes it's growth and development to become an independent seedling. Seeds usually germinate in two ways:

--> EPIGEAL germination: in this type of germination, the hypocotyl grows rapidly and elongates, carrying the cotyledon above the soil.The AVOCADO seed is a typical example of a dicotyledonous plant.

The sequence of events of avocado seed germination starts by imbibition which is the rapid in take or absorption of water by the seed through osmosis. Hydration of the embryo activates the enzymes in it which converts insoluble stored food materials into soluble forms. The testa splits and the radicle emerges first. It grows downwards as the primary root from which root hairs and branch roots arise( to form a tap root system). Next, the hypocotyl lengthens, pushes its way up through the soil carrying with it the cotyledons and the plumule. The cotyledons turn green on exposure to sunlight and start to photosynthesize. The epicotyl then grows and the plumule develops into a green shoot. By the time the first foliage leaves grow and begin to photosynthesize, the cotyledons shrink and drop off.

3 0
2 years ago
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