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3 years ago

Glucose is absorbed by __________ into the intestinal epithelial cells.

1 answer:

7 0

Glucose is absorbed by Na+/glucose symporter into the intestinal epithelial cells.

Symporter is located on the apical membrane of the intestinal epithelial cell and it is used for uptake of glucose from the intestinal lumen into the cell (against the concentration gradient). One glucose molecule and two Na+ enter the cell via symporter. Na+ concentration gradient and the membrane potential (generated from the Na+/K+ ATPase in the basolateral membrane) enable the function of the symporter. Glucose leaves the cell via facilitated diffusion on the basolateral membrane of the intestinal epithelial cell and goes into the blood.

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Alleles of the gene that determines seed coat patterns in lentils can be organized in dominance series: marbled > spotted = d

SSSSS [86.1K]

Answer:

a.The phenotypic proportions obtained after having the genotypes are 50% marbled seeds, 25% spotted and dotted seeds since they are codominant, 25% spotted seeds.

b. Taking into account the F1 genotypes in the previous point, the expected phenotypes for the first crossing are 100% marbled seeds and for the second crossing 100% dotted seeds.

Explanation:

Let's suppose:

Marbled allele: M

Spotted allele: S

Dotted allele: D

Allele for Clear: C

a. Because both crosses were between homozygous parents, the entire F1 genotype is the same.

For the first crossing the descendants have the MS genotype, and for the second crossing the descendants have the DC genotype. It is enough to make a Punnett square to obtain the different combinations of genotypes between the crossing of MS and DC.

3 0

3 years ago

Match each type of association with the best example commensalism mutualism parasitism amensalism A. A mold produces a chemical

Brums [2.3K]

A. A mold produces a chemical that kills bacteria without apparently benefiting. - amensalism

B. Aerobic bacteria in the human colon consume oxygen, making it possible for anaerobic species to survive. - commensalism

C. "Flagellates live in the gut of termites, feeding on the wood consumed by the termite and allowing the termite access to nutrition and energy in wood that they could not otherwise digest" - mutualism

D. "A helminth takes up residence in a human digestive tract, consuming nutrients" - parasitism

Explanation:

Amensalism is any relationship between organisms of different species in which one organism is inhibited or destroyed while the other organism remains unaffected.

Two examples of antibiosis amensalism are provided by the bread mold Penicillium and black walnut trees.

Amensalism is the association between organisms of two different species in which one is inhibited or destroyed and the other is unaffected.

Commensalism is a long-term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed.

Mutualism describes the ecological interaction between two or more species where each species has a net benefit. Mutualism is a common type of ecological interaction.

parasitism is a symbiotic relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life

8 0

4 years ago

Is glucose a reactant in aerobic stages of cellular respiration?

N76 [4]

YES

Glycosis helps to process glucose to pyruvate in many cellular respiration procedure.

Cellular respiration is also considered a part of the metabolism process. This process actually helps in carrying the oxygen through the blood.
Two types: Anaerobic and aerobic respiration
Anaerobic respiration doesn't use oxygen during its respiration process while the aerobic respiration uses oxygen.

7 0

3 years ago

HELP ASAP PLEASE!!!! 20 Points

valentina_108 [34]

Answer:

swimming is considered a low impact exercise

sprinting for 30 seconds during a jog is a wind sprint

running is a high impact exercise

short, high intensity segments are wind sprints

low impact exercises produce(s) less stress on the joints

Explanation:

4 0

3 years ago

A bumblebee carries pollen from the male portion of a plant to the female portion of the similar plant. Fertilization occurs. Wh

masha68 [24]

Answer:

The correct answer is D

Explanation:

I took the test and it works

8 0

3 years ago

Read 2 more answers