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zimovet [89]
3 years ago
12

two molecules that can cross a lipid bilayer without help from membrane proteins are O2 and CO2, what property allows this to oc

cur
Biology
2 answers:
Maru [420]3 years ago
4 0

O2 and CO2 are both nonpolar molecules that can easily pass through the hydrophobic interior of a membrane! Hope it helps

Brrunno [24]3 years ago
3 0

both the molecules are too small and have no charge therefore they can move across a membrane via gradient pressure from higher concentration to lower via simple diffusion. they don't need any atp or energy.

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Suppose two independently assorting genes are involved in the pathway that determines fruit color in squash. These genes interac
Vaselesa [24]

Answer:

120 white individuals

30 yellow individuals

10 green individuals  

Explanation:

Available data:

  • Dominant epistasis: Phenotypic frequencies 12:3:1
  • W allele codes for a dominant white phenotype
  • w allele codes for a colored squash
  • Y allele codes for a dominant yellow phenotype
  • y allele codes for a recessive green phenotype
  • W allele will always mask the phenotype produced by Y or y alleles
  • 160 offspring

Dihybrid Cross

Parental)   WwYy      x      WwYy

Gametes) WY   Wy    wY    wy

                 WY   Wy    wY    wy

Punnet Square)

                            WY         Wy        wY       wy

               WY     WWYY   WWYy   WwYY  WwYy

               Wy      WWYy   WWyy    WwYy  Wwyy

               wY      WwYY   WwYy    wwYY  wwYy

               wy       WwYy   Wwyy    wwYy  wwyy

F1 Phenotypic Frequency)

White phenotype: 12/16 = 120 individuals

Yellow phenotype: 3/16 = 30 individuals

Green Phenotype: 1/16 = 10 individuals

To know how many offspring are expected to have the white, yellow, and green phenotypes, you can perform a three simple rule. This is:

16 ------- 160 offspring

12 White ------- X = 120 offspring

3 Yellow ------- X= 30 offspring

1 Green --------X = 10 offspring              

3 0
3 years ago
Living plants may be valuable additions to science classrooms. Which is the most important safety consideration when
Sladkaya [172]

Answer:

DDDDDDDDDDDDDDDDDDD

Explanation:

7 0
3 years ago
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Put the events underlying inflammation in the correct order: a. Recruited leukocytes phagocytize the invaders. b. Local macropha
zhuklara [117]

Answer:

1)B 2)C 3)D E 4)E 5)A

Explanation:

Inflammation is the body defence system against various pathogens and include various components such as Immune cells and blood vessels. Inflammation occurs in a sequence of events.

  • when a pathogen enters the cells macrophages produce the first response by phagocytizing the foreign body.
  • The blood vessels dilated so more blood cells, oxygen and nutrients could reach at the site of pathogen and fight against it.
  • Foreign pathogen is captured at that place so it can't mobilize to other part of the body.
  • The more fighting cells are directioned at the site of infection
  • The recruited phagocytic cells phagocytize the invaders pathogen and starts its degradation.

7 0
4 years ago
How can mutations be harmful? ​
malfutka [58]

Answer:

It can be harmful in many ways

Explanation:

When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. In some cases, gene mutations are so severe that they prevent an embryo from surviving until birth.

5 0
3 years ago
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If you are contracting and relaxing your masseter muscle, what would you probably be doing?
mr_godi [17]
Most likely be chewing something
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2 years ago
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