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inysia [295]
3 years ago
14

Which rock layer is probably the oldest? A. 3 B. 5 C. 2 D. 4

Biology
1 answer:
Pavlova-9 [17]3 years ago
8 0

Answer:

3

Explanation:

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While volunteering at a hospital, Alex learns that there are several different human blood types and they are determined by alle
SIZIF [17.4K]

Answer:

They are codominant

Explanation:

There are 3 different alleles: IA, IB and i - IA and IB are codominants, i is recessive. Codominance means neither allele can mask the expression of the other and both alleles A and B are expressed in the blood type.

6 0
3 years ago
Incorporation of _____, a neutral antibiotic, into a polyvinyl chloride membrane allows for the manufacture of an ion-selective
Alja [10]

The incorporation of valinomycin, a neutral antibiotic, into a polyvinyl chloride membrane allows for the manufacture of an ion-selective electrode that is highly selective for potassium.

<h3>How Valinomycin Ionophores Enter and Transport K+ across Model Lipid Bilayer Membranes?</h3>

  • A biomimetic lipid membrane attached to the surface of the gold electrode contained the cyclic peptide valinomycin.
  • The ionophore characteristics of the peptide were investigated using electrochemical impedance spectroscopy, and the conformation and orientation of the antibiotic valinomycin within the membrane were identified using polarization modulation infrared reflection absorption spectroscopy.
  • By forming a complex with potassium ions and an ion pair with a counter anion, valinomycin transports ions across the membrane, and the combination of these two techniques revealed novel information about the ionophore mechanism.
  • The ion pair is located inside the hydrophobic portion of the membrane and makes a little angle of around 22° with the surface normal.

To learn more about Valinomycin refer to:

brainly.com/question/13977514

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5 0
2 years ago
DIVISION CHLOROPHYTA: also commonly called ____________ algae.
Maurinko [17]

Answer: Division chlorophyta: Green Algae. Division phaeaphyta: brown algae Division Rhodophyta: red algae

Explanation:

5 0
3 years ago
Read 2 more answers
Select which of the following is not an accurate portrayal of mutations.
Shtirlitz [24]
D. Mutations will always impact an individual on some level

Most of these seem accurate or at least close to being accurate on how mutations affect genes however, some mutations won’t always impact an individual because some mutations are so minor. But this is my best guess
4 0
2 years ago
Do you think the biodiversity is as high in a city park as it is in a rainforest?why or why not?
geniusboy [140]

No, the biodiversity is not as high in a city park as it is in a farm or rainforest

because, in an urban city park, only the species with the most general habitat and resource requirements have generally remained in the urban park.

<h3>What is Biodiversity ?</h3>

“Biodiversity” not only refers to the number of individual species, but also the genetic variety within and between species and the diversity of ecosystems and regions.

  • City Parks are less likely to have biodiversity richness as compared to a farm or a rainforest.

  • This is because these parts are artificially created and a lot of naturally occurring flora and fauna are modified in the process. This results in dilution of biodiversity-rich place.

Learn more about Biodiversity here:

brainly.com/question/26110061

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8 0
2 years ago
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