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S_A_V [24]
3 years ago
10

3 The plasma membrane is semipermeable because -

Biology
1 answer:
Irina-Kira [14]3 years ago
6 0

Answer: B) proteins in the membrane act like gates to control entrance and exit of molecules.

Explanation: Plasma membrane is composed of phospholipids bilayer in which the hydrophobic regions of the phospholipids face each other to form the core of the bilayer. Proteins are embedded in the bilayer through an interaction between the amino acid side chains and the nonpolar acyl chains of the phospholipids. The embedded membrane proteins form channels for passage of ions and other molecules. Each membrane protein is selected for one or more ions or molecules that passes through it. The membrane is said to be semipermeable because it allows the passage of some molecules and excludes the passage of others.

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In the next generation, this population has 14 HH members, 63 Hh, and 74 hh. Is the population in equilibrium? Answer either yes
fiasKO [112]

There should be more individuals with the dominant trait so the population is not in equilibrium.

4 0
3 years ago
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All eukaryotic cells have a mitochondria, but only plants and some photosynthetic protists have chloroplasts. Which of the follo
disa [49]

Answer:

B

Explanation:

<u>The correct statement to be inferred from the information would be that all eukaryotic cells need to produce energy</u>.

<em>The mitochondrion is an organelle that is referred to as the powerhouse of the cell. It is the site of oxidative phosphorylation where the energy for the cell's metabolic processes is generated. Hence, if all eukaryotic cells have mitochondrion, it means that they all need to produce energy for their metabolic activities.</em>

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4 0
2 years ago
What is the probability?:
Fittoniya [83]

Answer:

The probability that this couple will have a child with Duchenne Muscular Dystrophy is 50/50

Explanation:

This Punnett square shows our woman as "xx" and our man at "xy". Knowing this, we can now look back at the Punnett square's results. Out of the four squares, two of them are fill with the woman's carried condition, but the other two are also filled with the man's. So, that leaves us with a 50 percent chance that their child will have DMD.

Hope this helped!

Sources: N/A

6 0
2 years ago
3/10
VARVARA [1.3K]
D is your answer
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3 years ago
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The light reaction of photosynthesis puts carbon dioxide into the form of carbonhydrates
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Answer:

hey! hope this helps love!

Dark reaction means that light is not necessary for this part of photosynthesis. In the dark reaction, CO2 from the atmosphere is fixed or becomes part of a carbohydrate dioxide into the form of carbohydrates-organic molecules used as food for the plant. This process is called the Calvin Cycle.

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