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3 years ago

6

Most cells are constantly replacing damaged molecules and organelles. Explain why a red blood cell is unable to replace damaged

proteins.

1 answer:

Andrew [12]3 years ago

3 0

Red blood cells shed their nucleus and DNA after maturing, so they cannot code for amino acids, and in turn, protein

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What is the source of the pressure that has caused coyotes to adjust to a more nocturnal behavior

butalik [34]

<h2>Nocturnal Behavior</h2>

Explanation:

The wellspring of the weight that has caused coyotes, which were once basically diurnal, to change in accordance with a progressively nighttime conduct is the nearness of increasingly forceful diurnal predators, <em>all the more ordinarily, lions. Lions just chase in the day which constrains the movement of the coyotes. </em>
When living in nearness to people, coyotes will in general be nighttime yet may likewise be dynamic in the early morning and at dusk.
In zones with next to zero human movement, coyotes will chase during the day, and when a litter of puppies should be taken care of, they may need to chase nonstop.
<em>Coyotes normal 25 pounds, yet can arrive at 50 pounds, and measure 40 to 50 creeps from nose to tail tip</em>.
They can be dynamic day or night, yet are regularly generally dynamic at day break and nightfall.
That is the point at which you can hear them s<em>peaking with barks, howls and cries.</em>

4 0

3 years ago

Various species of the flowering plant of the genus Chrysanthemum have 18, 36, 54, 72, and 90 chromosomes. The variation is like

Degger [83]

Various species of the flowering plant of the genus <em>Chrysanthemum </em>have 18, 36, 54, 72, and 90 chromosomes. The variation is likely due to polyploidy.

<h3>What is polyploidy?</h3>

Polyploidy can be defined as the number of complete sets of chromosomes in a given cell of an organism.

A diploid organism contains two complete sets of homo-logous chromosomes in its somatic cells.

Many organisms used polyploidy as an evolutionary strategy for adaptation to challenging environmental conditions.

Learn more about polyploidy here:

brainly.com/question/1237319

8 0

2 years ago

A student observes 5,000 RFUs in a 200μl aliquot from a G3-500 ml culture. How many total RFUs will be present in a G3-15ml samp

natka813 [3]

Answer:

The maximum no. of RFUs collected in the purification procedure $= 3.05 \times 10^5$ RFUs

Explanation:

No. of RFUs in a 200 ul (0.2ml) aliquot = 5000 RFUs

So, No. of RFUs in G3-500 ml culture $= 5000 \times \frac{500 ml}{0.2 ml}$ RFUs

$= 5000 \times 2500$ RFUs

$= 1.25 \times 10^7$ RFUs

Similarly, No. of RFUs in a G3-15ml sample $= 5000 \times \frac{15 ml}{0.2 ml}$ RFUs

$= 5000 \times 75$ RFUs

$= 3.75 \times 10^5$ RFUs

The maximum no. of RFUs collected in the purification procedure

$= 3.75 \times 10^5 \times 80$ % RFUs

$= 3.75 \times 10^5 \times 0.80$ RFUs

$= 3.05 \times 10^5$ RFUs

5 0

3 years ago

What happens during cytokinesis? (1 point).

bulgar [2K]

Answer: the cytoplasms divides

Explanation:

6 0

3 years ago

HELLPP! ITS BIOLOGY

larisa [96]

Answer:

So that in a guinea pig cross in the offspring the recessive trait —long hair— can be observed in 25%, the most probable genotype of the parents is heterozygous Ss.

Explanation:

In guinea pigs, for the characteristic<u> hair length, short hair is the dominant allele and long hair is the recessive one</u>.

In order for 25% of the offspring to express the recessive characteristic, the parents must have a recessive genotype, which can be seen in Punnett's Square:

P: <u>Ss X Ss </u>

<em>Alleles S s </em>

<em>S SS Ss </em>

<em>s Ss ss </em>

Where the offspring is:

<em>50% Ss with short hair phenotype </em>
<em>25% SS with short hair phenotype </em>
<em>25% ss whose phenotype would be long hair. </em>

According to this, heterozygous parents for the characteristic long hair in guinea pigs have a 25% chance of having offspring with long hair.

8 0

2 years ago