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2 years ago

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Select all that apply. Functional groups are a group of molecules attached to a carbon-based core of an organic molecule. Key fu

nctional groups are _____. aminos carbonyls proteins phosphates carbohydrates

1 answer:

horrorfan [7]2 years ago

8 0

Answer: Aminos, Phosphates and Carbonyls

Hope this helps you!

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In Kerr and Wright's experiment with 96 fruit-fly populations, only 4 males and 4 females bred in each generation. After 16 gene

Svetradugi [14.3K]

Answer:

2.Less than 73% of the populations would have only one allele present.

Explanation:

The two alleles chosen do not affect the fitness of flies in the lab environment, so Kerr and Wright could be confident that if changes in the frequency of normal and forked phenotypes occurred, they would not be due to natural selection.

Using a larger breeding population would not be expected to alter the outcome of the experiment.

3 0

1 year ago

An owl has good night vision because its eyes can detect a light intensity as small as 5.0 × 10-13 W/m2. What is the minimum num

Lady bird [3.3K]

Answer:

Thus, the minimum number of photons per second is 77.34

Explanation:

Light intensity, $I_{min}$ = $5\times 10^{-13} W/m^{2}$

Pupil has a diameter, d = 8.5 mm

= 8.5 x $10^{-3}$ m

Radius of the eye, r = 4.25 x $10^{-3}$ m

∴ Area of the eye, A = $\pi .r^{2}$

= $3.14\times \left ( 4.25\times 10^{-3} \right )^{2}$

= $5.6\times 10^{-5} m^{2}$

Let $P_{min}$ be the minimum number of photons.

Therefore, $P_{min}$ = $I_{min}$ x A

= $5\times 10^{-13}$ x $5.6\times 10^{-5}$

= $2.8\times 10^{-17}$ W

Thus the minimum number of photons is given by

$N_{min}=P_{min}/E$

where E = $hc/\lambda$

= $\left (6.63\times 10^{-34}\times 3\times 10^{8} \right )/548\times 10^{-9}$

= $3.62\times 10^{-19} J$

Therefore, $N_{min}$ = $\frac{2.8\times 10^{-17}}{3.62\times 10^{-19}}$

= 77.34 photons per second

Thus, the minimum number of photons per second is 77.34

4 0

2 years ago

Match the given characteristics to the corresponding prokaryotes.

irinina [24]

<span>
1. spherical
Answer: </span>d. cocci<span>
A bacteria with spherical shape would be called cocci or coccus if they are in coccus in a group. One of the examples would be Staphylococcus aureus which is one of the normal flora of the skin. The word staphy- describe how their colony shaped which is look like grapes.</span><span>

2. rod-shaped
</span>A bacteria with rod-shape would be called bacilli or bacillus if they are in coccus in a group. One of the examples would be Bacillus anthracis which is a pathogen that could do deadly infection called anthrax. Many other bacteria is not named bacillus but have rod-shape like Escherichia coli, one of normal flora in the human gut<span>

3. purple stain
</span>Answer: gram-positive <span>
4. pink stain
Answer: </span>gram-negative <span>

In gram staining procedure, bacteria can have either purple or pink color. If the bacteria have high amount peptidoglycan in their membrane, they can retain the crystal violet color from the staining procedure. Bacteria with a high amount of peptidoglycan will be called gram-positive bacteria.
If they are not, the alcohol will remove the stain, allow the bacteria to retain</span> safranin or fuchsine pink color. Bacteria with a low amount of peptidoglycan will be called gram-negative bacteria.

8 0

1 year ago

during photosynthesis in Plants what is the source of carbon in the sugar molecule ( sorry know answer didn't know it was record

rosijanka [135]

Chlorophyll is the source of carbon in the sugar molecule

4 0

1 year ago

Read 2 more answers

Review Test Questions

Allushta [10]

Answer:

• O A. ACUUGGCGACGU

Explanation:

Anticodons of tRNA have same sequence as of any DNA code they are for. Why? <em>This is because original DNA is transcripted into a mRNA sequence which is complementary to the original DNA sequence. This mRNA is complementary to the original sequence while the anticodons on tRNA are again complementary to the mRNA sequence,</em> which in-turn means that they have exactly same sequence as of original DNA. This is how they interpret the original cod and manifest the expression of correct amino acids as they are present in parents.

Hope that helps!

7 0

1 year ago