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2 years ago

Please answer thiis lol?

Biology

1 answer:

Iteru [2.4K]2 years ago

4 0

Answer:

b to a

Explanation:

since cells in membranes move from high to low concentration (diffusion). b has more molecules, so it will go into a.

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Which of the following examples shows how scientists continue to investigate Darwin’s idea that species change over time by natu

Mnenie [13.5K]

There are no examples, i'd love to answer it, but you have to either upload the examples or a picture of them

5 0

3 years ago

I need help with the image (phenotypes and genotypes).

Flauer [41]

Answer:

See the answer below

Explanation:

1. Only one phenotype is present in the F1 generation offspring. Since tallness was dominant over shortness, all the offspring in the F1 generation appeared tall.

2. Two phenotypes are present in the F2 generation - 9 tall and 3 short. The short trait reappeared at the F2 generation.

3. The genotype of the F1 offspring would be heterozygous. Assuming the purebred tall is AA and the purebred short is aa:

AA x aa

Aa Aa Aa Aa

All the F1 offspring will appear tall and their genotypes would be heterozygous.

4. Assuming that the allele for height is denoted with A (a), the genotype of the purebred tall plant would be AA.

5. In a similia vein, the genotype of the purebred short plant would be aa.

5 0

3 years ago

You are studying with a classmate, who explains that increasing the amount of nutrients in a lake helps submerged, rooted aquati

Nataly_w [17]

Answer:

E-You disagree because the resulting increase in phytoplankton at the surface would inhibit sunlight from penetrating into the water, thus inhibiting photosynthesis in the submerged plants.

Explanation:

Eutrophication is the process wherein nutrients specifically phosphorus and nitrogen are present in excess in a water body such as a lake. The increased concentration of nutrients promoter the growth of cyanobacteria and algae such as phytoplankton.

The increased population of phytoplankton in surface water reduces the oxygen availability and clarity of water for the organisms present in deeper layers. Also, reduced clarity of water limits the amount of solar radiations penetrating the surface water to reach the deeper layers.

Increased nutrient levels of the lake would rather inhibit the growth of submerged plants due to reduced availability of sunlight as caused by presence of phytoplankton in surface water.

5 0

3 years ago

What are three parts that create an amino acid

Ilya [14]

Answer:

The three parts of an amino acid are the carboxyl group, the amino group, and the central carbon that contains the R group.

Explanation:

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3 years ago

If a parent is heterozygous for a gene, 1/2 of the time they will contribute a dominant allele to their offspring and 1/2 of the

kvasek [131]

If two heterozygous parents mate, the phenotypes of the resulting offspring will be 75% dominant and 25% recessive

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3 years ago