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Readme [11.4K]
4 years ago
7

The cell membrane of a red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Since other substan

ces are blocked from coming in, this is membrane is called:
A) perforated
B) semi-permeable
C) non-conductive
D) permeable
Biology
1 answer:
Reika [66]4 years ago
5 0
It is semi permeable
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Zero population growth occurs when a population has the same number of individuals entering the population (births) as those lea
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The year in which the deer population closest to ZPG is in 1971

That year the population of deer closest to Zero population

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Living organisms; be it plants or animals are any organic or living system composed of cells and function as an individual entity.

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So therefore, the year in which the deer population closest to ZPG is in 1971

Complete question:

Zero population growth occurs when a population has the same number of individuals entering the population (births) as those leaving the population (deaths). In which year, was the deer population closest to ZPG?

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8 0
2 years ago
What properties of sound determine the pitch of sound
BlackZzzverrR [31]
Sound is a wave and will have different frequencies when the wavelength changes. When the wavelength changes the amplitude will rise or fall creating different pitch.
4 0
3 years ago
How is electricity generated in the simulation?
Novay_Z [31]

Answer:

(LONG RESPONSE!)

In this work, several simulations and analyses are carried out to investigate the feasibility of generating electricity from underwater sea currents at Istanbul Bosphorus Strait. Bosphorus is a natural canal which forms a border between Europe and Asia by connecting Black Sea and Marmara Sea. The differences in elevation and salinity ratios between these two seas cause strong marine currents. Depending on the morphology of the canal the speed of the flow varies and at some specific locations the energy intensity reaches to sufficient levels where electricity generation by marine current turbines becomes economically feasible.

In this study, several simulations are performed for a 10 MW marine turbine farm/cluster whose location is selected by taking into account several factors such as the canal morphology, current speed and passage of vessels. 360 different simulations are performed for 15 different virtual sea states. Similarly, 8 different configurations are analyzed in order to find the optimum spacing between the turbines. Considering the spatial variations in the current speed within the selected region, the analyses are performed for three different flow speeds corresponding to ±10% change in the average value. For each simulation the annual energy yield and cluster efficiency are calculated.

3 0
3 years ago
Some cases of sudden infant death syndrome (SIDS) may include biological vulnerabilities in the function of which neurotransmitt
Korvikt [17]

Answer:

The correct answer is serotonin.

Explanation:

SIDS or sudden infant death syndrome refers to an inexplicable death, generally at the time of sleep, of a seemingly healthy baby of less than a 1-year-old. SIDS is also called crib death as the infants usually die in their cribs.  

In children who are diagnosed with SIDS, usually possess lesser concentrations of serotonin that assist in monitoring heart rates, breathing, and sleeping. Serotonin refers to a compound, which is found in blood platelets that constricts the blood vessels. At the same time, it also functions as a neurotransmitter. It is a chemical found in the brain, which transmits messages to other cells.  

3 0
4 years ago
When a genotype of a guinea pig is "Hh" (select all that are true)
Butoxors [25]

Answer:

One chromosome of the homologous pair has a sequence that results in hair and one chromosome has a sequence that results in no hair

One copy of the "H" allele on the homologous chromosome is enough to make the guinea pig have hair since both alleles are transcribed and translated

Only one of the chromosomes in the homologous pair carry the genetic sequence to make hair

Explanation:

Hairy is dominant over hairless. If there was a hairless guinea pig here instead, we would know its genotype. It would be hh. Remember any time a dominant allele is present it is expressed in the phenotype, so if the phenotype is not the dominant one, we know the genotype must contain two recessive alleles.

8 0
3 years ago
Read 2 more answers
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