What happens to gas exchange in a low oxygen environment?.

1 answer:

8 0

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries,

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Offspring that result from crosses between true-breeding parents with different traits (G1)

grigory [225]

Answer : Are called hybrids

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3 years ago

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Which is a leading theory for the formation of fossil fuels?

Ber [7]

Answer:

Currently the biogenic theory is the leading explanation for the formation of fossil fuels and it’s believed that the petroleum we most commonly use took anywhere from 1 million to 1 billion years to form and represents a wide spectrum of useful petroleum and natural gas products including methane, propane, butane, hexane, octane and others

Explanation:

Reference: www.sclubricants.com/fossil-fuels-oil/

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In bacterial and archaeal cells, the electron transport chain is located in the _________ whereas in eukaryotic cells, the elect

ANEK [815]

Answer:

Cell membrane of prokaryotes and Inner mitochondria of eukaryotes

Explanation:

Electron transport chain is a part of oxidative phosphorylation which is the third step of aerobic cellular respiration in living organisms. The ETC is a complex of proteins and mobile electron carriers. It occurs when electron is being transferred from one electron carrier to another, starting from NADH and FADH2. A proton pump which is used to synthesize ATP is generated at the end.

This ETC process occurs in the cell membrane of prokaryotic cells due to the fact that they lack a membrane-bound Mitochondrion. ETC occurs in the inner membrane of the mitochondria called CRISTAE in eukaryotic cells.

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3 years ago

Which of the following is NOT a function of Sertoli cells?

zalisa [80]

Answer:

The correct answer is option - d. Production of primary spermatocytes.

Explanation:

The accessory cells or supporting cells present within the seminiferous tubules of reproductive system termed as the Sertoli cells. They play various roles in the body and reproductive system.

Sertoli cells make blood-testis barrier in adjacent Sertoli cells in the seminiferous tubules. These cells secrete different types of enzymes and hormones such as inhibin which are also secreted by ovary and placenta in females. Sertoli cells produce seminiferous tubular fluid to provide nutrition to the sperm. Apoptotic germ cells are timely eliminated by these cells.

Thus, the correct answer is option D. Production of primary spermatocytes.

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3 years ago

A researcher recorded that a chemical reaction required 2.90 gal water and raised the temperature of the reaction vessel by 57 F

Bess [88]

A. 11.0 L is the researcher's volume measurement to the SL units of liter

Explanation:

Given that a researcher recorded that the chemical reaction has water = 2.90 gallon.

We have to convert the researcher's volume into the SL units of liter.

So, we know that 1 gallon = 3.875 liters.

Then we have to convert 2.90 gallons of water in to liters.

Then , volume in L = $(volume\ in \ gal) \times (3.875 L/1 gal)$ = $(2.90) \times (3.875L/1 gal)$