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never [62]
3 years ago
8

Consider the group of giraffes in the image below Which of Charles Darwin’s main points will be evident as these giraffes reach

for food in tall trees
Biology
2 answers:
tatuchka [14]3 years ago
8 0

first answer is wrong  its <u>Some organisms in a population are better equipped to survive than others</u>

Mashcka [7]3 years ago
7 0
<span>Over time, beneficial variations will be passed on to future generations

so :B</span>
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Which of the following are the 3 factors of Sustainability?
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<u><em>Solar Energy and Biodiversity</em></u><em> are the 3 factors of Sustainability.</em>

Answer:

<em>B. Solar energy </em>

<em>D. Biodiversity </em>

Explanation:

Sustainable sources of energy are renewable sources of energy. Sustainable energy is the availability of energy to such an extent that it addresses the issues of the present without trading off the capacity of future ages to address their issues.

Sustainable energy incorporates all sustainable energy sources, for instance, hydroelectricity (electricity from water), biomass, geothermal (electricity from the Earth), wind (using windmill), wave, tidal and sun oriented energies. Renewable energy is the process but sustainable energy is our belief or mindset.

3 0
3 years ago
PLEASE I NEED HELP. ANSWER ASAP PLZ
Alex_Xolod [135]

<u>Answer</u>: Bacteria through the nucleoid (number 5).

<u>Explanation</u>:

Both paramecium and bacteria are single celled organisms. However, they differ by the fact that the first one is an eukaryote and the second one a prokaryote.

Furthermore, they differ in their capacity to mutate and adapt to environmental changes. Bacteria have a simple internal structure that lacks any organelles and are very adept at adapting to environmental changes. Besides their capacity for high mutation rates, they are also capable of picking up genetic information from their environment through a process called <em>transformation</em>.

Through transofrmation, environmental DNA enter the living bacteria through its cell membrane. Double stranded DNA will have one strand dissolved through hydrolysis, whereas the second strand may recombine with the bacterial <em>chromosome (nucleoid)</em>. Thus, this new genetic material will become incorporated into the bacterium's genome.

7 0
3 years ago
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The Calvin cycle is considered light-independent because it can occur in darkness. However, most often the Calvin cycle takes pl
GarryVolchara [31]

Answer:

C) The Calvin cycle requires ATP and NADPH, which require sunlight to be produced

Explanation:

The light-dependent phase of photosynthesis includes the photolysis of water molecules. The released electrons are passed to PSII to PSI via electron carriers and finally to NADP+ to reduce it into NADPH.

Transfer of electrons via electron carriers also generates the proton concentration gradient which in turn drives ATP synthesis. ATP and NADPH formed during light reactions are used in the Calvin cycle as an energy source and electron donor respectively.

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3 years ago
The plant cell wall
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B. is a protective structure made of cellulose fibrils

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4 0
3 years ago
When glucose is present, enzyme IIAglc is __________ and LacY is __________. a. phosphorylated; inhibited b. not phosphorylated;
olga_2 [115]

Answer:

Option B, not phosphorylated; inhibited

Explanation:

Glucose 6 acts as a catobolite repressant . A catobolite repressant which is usually a carbon compound inhibits the operon transcription. In the presence of glucose -6, unphosphorylated enzyme IIAGlc  inhibits the transportation system and hence prevents the utilization of lactose. Glucose‐6‐phosphate and other non‐PTS carbon causes inducer exclusion thereby leading to dephosphorylation of enzyme IIAGl without getting transported.

Hence, option B is correct

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