Which of the following provides the best summary of the process of natural

A dog experiencing a high level of fear will usually exhibit

Cerrena [4.2K]

I believe the correct answer is D. ears pinned back, eyes averted or lowered, and lips pulled back and down.
When dogs are afraid, their ears are lowered to show fear because of something they may have done wrong. They are also scared or embarrassed to look at their owner because they know they will receive some sort of punishment. Their tail is also usually tucked between their legs to show they are afraid.

8 0

3 years ago

Match each of the following terms

abruzzese [7]

Answer:

The correct match for the terms with their description is given below:

Explanation:

Gene: f) A sequence of nucleotides in DNA that codes for a functional product such as a protein.

Nucleotide: d) The building blocks of nucleic acids, includes a phosphate, sugar and organic base.

Chromosome: e) The structure that carries the DNA sequences

Frameshift mutation a) The loss or addition of a nucleotide pair in a DNA strand.

Point mutation: c) The substitution of one nucleotide pair for another in DNA strand.
Genotype: g) The entire genetic makeup of an organism
Phenotype: b) The physical and biochemical expression of the genotype.

7 0

3 years ago

1.) You are studying P120, a protein of 120 KDa that is continuously synthesized in eukaryotic cells. Its cellular concentration

irina1246 [14]

Answer:

1. P120 is degraded in the 26S proteasome

2. The 26S proteasome has a major role in protein degradation and is critical for protein homeostasis

3. Cell cycle and DNA replication are cellular processes regulated by the Ras and NFkB pathways

Explanation:

The proliferation-associated nucleolar protein (p120) is a protein known to be expressed during the interphase of the cell cycle, specifically in G1 and early S phase, where any problem with DNA replication trigger a checkpoint, i.e., a molecular cascade of signaling events that suspend DNA replication until the problem is resolved. In mammalian cells, the 26S proteasome is responsible for catalyzing protein degradation of about 80% (or even more) of their proteins. The 26S proteasome acts to degrade rapidly misfolded and regulatory proteins involved in the cell cycle, thereby having a major role in protein homeostasis and in the control of cellular processes. It is for that reason that inhibitors that block 26S proteasome function have shown to be useful as therapeutic agents in diseases associated with the failure of protein degradation mechanisms (e.g., multiple myeloma). The NF-κB are highly conserved transcription factors capable of regulating different cellular processes including, among others, cellular growth, inflammatory responses and apoptosis. Moreover, the MAPK/ERK pathway is able to transduce different signals received on the cell surface to the nucleus. The MAPK/ERK pathway is activated when a singling molecule binds to a cell receptor which triggers a signaling cascade that ends when a transcription factor induces the expression of target genes, ultimately producing a response in the cell (for example, the progression through the cell cycle).

7 0

3 years ago

This chemical equation represents the burning of methane, but the equation is incomplete. What is the missing coefficient in bot

Natalija [7]

Answer:

C) 2

Explanation:

quick maths i guess

4 0

3 years ago

In garden peas, tall (T) vine is dominant over short (t) vine, and round pea pod (R) is dominant over wrinkled pea pod (r). Cro

Aleksandr [31]

Answer:

Explanation:

Given:

Traits

T (tall, dominant) and t (short)

R (round, dominant) and r (wrinkle)

Crossing parents

hetero-zygous. tall wrinkled (Ttrr)

phenotype tall is given hetero-zygous., so Tt

phenotype wrinkled is recessive, so must be homo-zygous rr

Foiled genotypes (Tr, tr, each with 50%)

short hetero-zygous. round (ttRr)

phenotype short is recessive, so homo-zygous rr

phenotype round is given heteroz. so Rr

Foiled genotypes (tR, tr, each with 50%)

Offsprings on a 4x4 punnett square

See diagram

6 0

3 years ago