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3 years ago

Which of the statements below about sexual selection is NOT correct?

Biology

1 answer:

Korolek [52]3 years ago

4 0

Answer:

The correct answer is option C.

Explanation:

Sexual selection is a type of special natural selection. It affects the ability to get or breed with a mate and it could be by any means. It changes phenotypically in the different sexes of the same species for example peacock.

It is might be sometime harmful to the species too. Females produce eggs or a number of pregnancy and it affects the reproductive success where is in males it is determined by the mating numbers.

Thus, the correct answer is option C.

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The rate of O2 production by the light reactions varies with the intensity of light because light is required as the energy sour

kupik [55]

Answer:

The correct answer is option a.

Explanation:

Yes, the light reactions also depend upon the Calvin cycle. Calvin cycle refers to a phenomenon that is used by the plants and algae to convert carbon dioxide from the atmosphere into sugar, the food needed by the autotrophs in order to grow. The plants rely upon the Calvin cycle for food and energy.

In the given case, the rate of oxygen production would get diminish as the rate of ATP and NADP+ generated by the Calvin cycle diminishes. Of all the outcomes of the Calvin cycle, ADP and NADP+ are the only ones that get utilized by light reactions.

The ADP and NADP+ are used up by the light reactions to fuel their reactions. This illustrates that if the rate of ADP and NADP+ generated by the Calvin cycle diminishes the production of oxygen by the light reactions also diminishes.

5 0

2 years ago

Which of the following is NOT true about the FemCap cervical cap?

Kazeer [188]

Answer:

Explanation:

it must be kept in place at least 10 hours after intercourse

5 0

3 years ago

One of the grand challenges in biology is understanding how the first cells formed on Earth. Since all cells are bound by a cell

coldgirl [10]

<h2>Answer is option "A"</h2>

Explanation:

Oils and fats, which in science are called lipids, are known as amphipathic molecules. These molecules have two distinct ends to them: a water-loving (hydrophilic) side and a water-fearing (hydrophobic) side. While the hydrophilic sides of a lipid will associate with the water in a solution, the hydrophobic sides of the lipid all cluster together to 'hide' from the water. Lipids therefore cluster together and form spheres where the hydrophobic sides are in the center away from the water while the hydrophilic sides are on the outside, associating with the water.
The ability of the atoms within a group to form hydrogen bonds with the water molecules around them makes them hydrophilic. Oxygen and nitrogen atoms readily form hydrogen bonds with water molecules, so any organic molecules that have oxygen or nitrogen atoms bound to their carbon skeletons will be hydrophilic.
For example, if we take the molecule for cholesterol, we see the OH group on the left is hydrophilic and will form hydrogen bonds with water, while the ring structures, which only consist of hydrogen and carbon atoms, are hydrophobic and will not associate with the water.
There are many different kinds of lipids with different functions. Lets start by examining phospholipids, which compose the cell membranes of animals. They form lipid bilayers, with one set of hydrophilic heads facing the exterior of the cell membrane and the other set facing the interior (as you can see on the diagram on screen). The hydrophobic portions of the lipid bilayer - the lipid tails - face towards one another, which allows them to hide away from the water inside and outside of the cell.
So,the right answer is option A "amphipathic molecules".

5 0

3 years ago

A forest fire lightly burned part of the park. The fire added nutrients to the soil. The fire also helped pine cones open and dr

sdas [7]

It is defiantly not a, because only part of the park was burnt. It wouldn't be c, because fire does not cause seeds to fly in. I would say B

8 0

2 years ago

Read 2 more answers

A record of Earth's long-ago weather can be found by digging into the

Feliz [49]

Answer: Option A.

Polar ice cap in Antarctica.

Explanation:

Scientist drill ice cores from inside the polar ice cap in Antarctica to study variability of climate and differentiate that variability From global climate change. Each layer of the ice tells about weather and what the Earth was like when the first snow fell.

For example, Le grande says that as snow deposits into a growing glacier, the temperature of the air imprints on water molecules.

Icy layers hold particles,aerosols, sea salts, trace elements that were in the atmosphere before and they abide for thousands of years and provide evidence of past events.

8 0

3 years ago