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geniusboy [140]
2 years ago
12

What is a plastid? No links please.

Biology
1 answer:
meriva2 years ago
5 0

Answer:

Explanation:

A plastid is an organel that is found in the cells of plants, algae, and some other eukaryotic organisms. There are three kind of plastids; chloroplast, chromoplast, and leucoplast.

 Plastids contain pigments which is used in photosynthesis and the colour pigments that determine the colour of plant.

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A milk snake looks similar to the deadly coral snake. This is an example of A) warning coloration adaptive radiation B) cryptic
Damm [24]
In this case, c) mimicry is the answer. In Batesian mimicry in which harmless animals mimic toxic animals. In this case, I assume the milk snake is harmless and the coral snake is venomous. Since the milk snake has a trait similar to deadly coral snake, less animals would eat it thinking it is dangerous. Over time all the milk snake that look like the deadly coral snake would survive leading to evolution by natural selection. This would lead to more and more milk snake mimicking the resemblance of the deadly coral snake.

a) The deadly coral snake has a warning color adaptive radiation. If the question had described the environment and how the snaked adapted to the environment via warning coloration. This would've been correct.

b) cryptic coloration is more about camouflage with the environment. If the question had state how a certain feature help one of the animals blend into the background. This would've been correct.

d) I'm not sure whats different between this and a so i'll consider them both the same.

3 0
2 years ago
In Drosophila, straight wings are dominant to curved wings (c), smooth eyes are dominant to sparkling eyes (spa), and tan body i
77julia77 [94]

Answer:

\frac{1}{8}

Explanation:

Straight wings are dominant over curved wings

Let Straight wings : H

curved wings : t

smooth eyes are dominant to sparkling eyes

let smooth eyes = H

spark ling eyes = t

tan body is dominant to ebony body color.

Again; Let tan body color be H

Let ebony color be t

If flies that are heterozygous for all three traits are crossed;

we have HtHtHt × HtHtHt

Then the selected trihybrid traits for the cross will be (HHH,HHt, HtH, Htt, tHH, tHt, ttH, ttt)

We will realize that from the punnet square in the diagram below, the proportion of the offspring would you expect to be heterozygous for all three traits (i.e HtHtHt) is asterisk in the punnet square and will be \frac{8}{64}

= \frac{1}{8}

7 0
3 years ago
Complete the sentence using the terms hydrophilic and hydrophobic: transmembrane proteins are found in the plasma membrane. ___
wel
Transmembrane proteins are found in the plasma membrane. Hydrophilic regions are embedded <span> within the membrane, and Hydrophobic regions project from both surfaces of the bilayer. </span><span>
Approximately 20-80% of the cell membrane is composed of lipids, the rest, is made up of protein. The lipid layer of the membrane gives it flexible and permeable characteristic. While the protein part assists in transport of molecules it needs to survive.<span>
</span></span>

7 0
3 years ago
Scientists can now predict when both earthquakes and volcanic eruptions will happen. true or false
Pavel [41]
When i was in your grade i found out this the answer is true.

5 0
3 years ago
Read 2 more answers
A) What are the dependent &amp; independent variables?
andre [41]

Answer:

an independent variable is a variable that we choose to change to see that happens. ( eg. the temperature when testing evaporation).

a dependent variable is the variable that we measure. ( so maybe how much water evaporates)

3 0
2 years ago
Read 2 more answers
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