Watershed drains waters into a stream and tributaries. Which is its main function?

A frameshift mutation that occurs very early in a protein sequence would have what effect on the protein's structure? A. The pri

AlekseyPX

Answer:

C. Primary, secondary, and tertiary structures would be altered

Explanation:

Frameshift mutations refer to the mutations that change the reading frame of the gene. Frameshift mutations are mostly caused by insertion or deletion of nucleotide since addition or loss of nucleotide alters all the codons present downstream of the point of the mutation site. If frameshift mutation occurs at the beginning of the protein sequence, all the downstream amino acids would be altered.

The changed amino acid sequence would alter the primary structure of the protein. Since the secondary and tertiary structure of proteins is determined by interactions between the R groups of amino acids, their polarity, charge, etc., the altered amino acid sequence would also alter secondary, and tertiary of the protein.

3 0

3 years ago

Would a muscle cell be able to produce a functional contraction if it lacked t-tubules?

hjlf

The answer would be no. T-Tubules or Transverse tubules are additions of the sarcolemma that infiltrate into the center of cardiac and skeletal muscle cells. There would be no functional contraction since it would not be capable to communicate or interconnect with the other cells.

7 0

2 years ago

Worth branliest only if u get it right please answer properly and not just for points it’s the last question for this homework

serg [7]

Deer is the answer, it is quick and has camouflage

8 0

2 years ago

Read 2 more answers

What will occur if a species is divided into two groups and allowed to reproduce in different environments for many generations?

bonufazy [111]

Answer:

The original species will diverge into two new species. It will occur speciation. It will occur some sort of allopatric speciation.

Explanation:

When the original species is divided and placed under different environments, where they can reproduce for many generations, many changes or mutations will occur in each group. These changes will depend on each group´s environment and its ecological pressures and will lead to divergence. Pressures act on individuals and make them adapt to the new environmental conditions. Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce. The fixation of mutations will increase the difference among both groups, up to the diverging point into two new species.

The biological concept of species states that individuals of the same species can reproduce because they have a genetic reservoir in common: many genetic variants.

Genetic variability is the measure of a species organism´s tendency to differentiate. In genetic variability, individuals of the same species are not identical. They are recognizable as members of the same species, but they differ in shape, function, and behavior. There exist variations among individuals of the same species.

Genetic variability originates from mutations, recombinations, and karyotype alterations. It allows or makes possible evolution.

Allopatric speciation consists of the geographic separation of a continuous genetic background giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

The process of allopatric speciation involves different steps:

• The emergence of the barrier.

• Interruption in the genetic interchange

• The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.

• Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.

• Prezigotic isolation mechanisms favored by selection once occurs a secondary contact between the new species in formation.

6 0

2 years ago

Which food component gives you the most energy? carbohydrate fat or protein

weqwewe [10]

Answer: fat

Explanation:

Carbohydrates, fats and proteins are among the major nutrients in the food component.

Where proteins helps in growth of the body where as carbohydrates and fat provide energy. Protein has 4 calories per gram.
Carbohydrates are instant form of energy. All carbohydrates turn into glucose and raise our blood sugar. Carbohydrate has 4 calories per gram.
While fats are the slowest source of energy but provides most energy. Each gram of fat provides about 9 calories [ approximately more than twice that in proteins or carbohydrates].

Hence, fat gives you the most energy .

4 0

3 years ago