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2 years ago

According to the cladogram, which feature is present in primates, but not amphibians?

Biology

1 answer:

Natali5045456 [20]2 years ago

5 0

Answer:

The primates have hair, as shown in the cladogram. Compared to the hairless amphibians.

Explanation:

Amniotic Egg

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Look at the phylogenetic tree. Do robber crabs have more in common with humans or with sponges? What conclusion can you reach ab

iVinArrow [24]

Answer:

Robber crabs have more in common with humans than sponges.

Explanation:

Robber crabs have more in common with humans than sponges because sponges don't have tissues. Crabs and humans have specialised tissue.

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3 years ago

Compare and contrast the contributions of Neel, Pauling, and Ingram to our understanding of the genetic and molecular basis of s

taurus [48]

He demonstrated that SCD and sickle cell trait were due to the presence of abnormal 8-globin polypeptides in red blood cells. He demonstrated that the electrophhoretic mobility of B-globin from patients with SCD was different from that of healthy individuals. He demonstrated that both parents of multiple patients with SCD had low levels of sickled red blood cells. He hypothesized that SCD was a recessive trait and that the parents of patients with SCD would be heterozygous carriers. He demonstrated that the difference between B-globin polypeptides in individuals who were healthy and those with SCD is an amino acid substitution. He performed a peptide fingerprint analysis on B-globin from individuals with 84 84 and 89 88, which identified the segment of B-globin that was changed by the BS mutation. James Neel Linus Pauling Vernon Ingram

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2 years ago

Sulfur dioxide (SO2) and hydrogen sulfide (H2S) gases are released on a large scale by certain forms of industry, and can react

maria [59]

sulfuric acid - acid rain. Damages forests, limestone statues/buildings, lakes (alters pH) etc. Sulphur trioxide is a pollutant, which is also detrimental to health. Mark me the brainiest!

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2 years ago

Which drugs appear to produce therapeutic effects by blocking receptor sites for dopamine?

Tems11 [23]

The correct answer is c.antipsychotic drugs.
Drugs that block dopamine receptor sites are dopamine antagonist (antidopaminergic). Dopamine antagonists are a type of drugs which blocks dopamine receptors by receptor antagonism. Those antagonists are used as antipsychotics, so they have found use in treating schizophrenia, bipolar disorder, and stimulant psychosis. Also, they can be antiemetics used in the treatment of nausea and vomiting or used as anti-depressants.

3 0

2 years ago

Read 2 more answers

if a cell increases the activity of its actin severing proteins, will it lead in the short term to more or less actin polymer ma

marta [7]

More polymer will form if the concentration of free actin monomers is higher than the Cc at both the plus and minus ends.

Less polymer will form if the concentration of free actin monomers is lower than the Cc at both the plus and minus ends.

Actin polymerization encourages FAK and Src to activate small G proteins by signalling to GEFs and GTPases (e.g., Rho and Rac). The actomyosin network is then forced to develop as a result of G proteins' induction of cytoskeleton-regulating proteins.

What stops cells from forming actin polymers?

Actin monomer is sequestered by monomer-binding proteins, reducing its availability for polymerization. As a result, actin does not polymerize when monomer-binding proteins are present in stoichiometric levels.

Q. If a cell increases the activity of its actin severing proteins, will it lead in the short term to MORE or LESS actin polymer mass? Chose the most accurate answer.

Increased severing activity will result in LESS polymer under any conditions.

Increased severing activity will result in NO CHANGE in the total amount of polymer under any conditions. It simply results in a larger number of smaller filaments.

Increased severing activity will result in MORE polymer under any conditions.

If the concentration of free actin monomers is below the Cc for both the plus and minus ends, then MORE polymer will result. If the concentration of free actin monomers is above the Cc for both the plus and minus ends, then LESS polymer will result.

If the concentration of free actin monomers is above the Cc for both the plus and minus ends, then MORE polymer will result. If the concentration of free actin monomers is below the Cc for both the plus and minus ends, then LESS polymer will result.

To know more about actin, visit:

brainly.com/question/24173611

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4 0

1 year ago