The scientific method is cyclic/linear

Answers

Answer 1

Answer:

Answer: The scientific method is cyclic.

Explanation: Scientific methods is the systematic way of using knowledge , hypothesis , observation , theories and experiments , to give us understanding for the questions.

Scientific method is always cyclic as it involves several steps. Cyclic way give us better understanding about facts and whole phenomena.

Answer 2

Answer:

Cyclic

Explanation:

Scientific method comprises of various complex procedures or cycle. Scientific method involves a lot of people and ideas usually generate more and new ideas. It doesn’t usually follow a set guideline or step.

It involves raising up of more questions as more ideas are discovered . It makes sure the analysis and procedure is a very thorough one with no issue.

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How are cis-trans isomers used for night vision?

Answers

Answer: 11-cis Retinal is the light-sensitive component of rod and cone photoreceptors, and this structural conformation in rod photoreceptors is vital for low-light vision (night vision)

Explanation: To detect light, photoreceptors (especially rods) employ the exceptional properties of 11-cis retinal. Rods transmits low-light vision, as only them have enough sensitivity to respond and to trigger vision .

11-cis retinal in rods are bound to an opsin signaling protein to form a visual pigment molecule. Its other isomer, the all trans retinal is isomerized to 11-cis retinal causing the branching of the polyene chain, deactivating opsin molecule and increasing sensitivity to light. This adaptation occurs rapidly in minutes in the dark, resulting in maximum sensitivity to light.

"Cis-Trans Isomerism in Vision
The retina, the light-detector layer in the back of our eyes, contains colored compounds called visual pigments. They are insoluble in water and can be extracted from the retina with aqueous detergents. In the dark these pigments are reddish (their name, rhodopsin, comes from a Greek word meaning rose-colored), but the color fades upon exposure to light.

Rhodopsin molecules contain a protein called opsin plus a derivative of vitamin A called 11-cis-retinal. In the dark, 11-cis-retinal fits nicely into the folds of the surrounding opsin. When light hits the rhodopsin, the 11-cis-retinal becomes all-trans-retinal and no longer fits into the cavity of opsin. The opsin and the all-trans-retinal separate. The change in rhodopsin conformation is eventually transmitted to the nerve cells in the eye and then the brain. The stereoisomerism of retinal is thus an important part of the vision process. Note that only one of the five double bonds is affected in this transformation, but when this one changes from cis to trans, the shape of the entire molecule changes. An enzyme later catalyzes the change of all-trans-retinal back to 11-cis-retinal so that it can once again bind opsin and wait for the next exposure to light.

The retinas of vertebrates have two kinds of cells that contain rhodopsin. These cells are distinguished by their shapes: rods and cones. The cones, which function in bright light and are used in color vision, are concentrated in the central portion of the retina, called the macula, and are responsible for the greatest visual acuity. The remaining area of the retina consists mostly of rods, which are used for peripheral and night vision. 11-cis-retinal is present in both rods and cones. However, the opsin is somewhat different in the two kinds of cells, and the cones have three different opsins, one kind each for perception of blue, green, and red colors."

A woman with Type O blood and a man who is Type AB have are expecting a child. What are the possible blood types of the kid? 2. What are the possible blood types of a child who's parents are both heterozygous for "B" blood type?

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The possible blood type of offspring, when a woman with type O and a man who is type AB are expecting a child are A and B.

What are the types of blood groups?

There are four kinds of blood groups which are A, B, AB, and O, based on the presence of antigens in RBC. Blood groups A and B show co-dominance, while O is recessive.

When a woman with type O blood and a man who is Type AB are expecting a child, the possible blood types are A and B. 50% of the children would have A blood type, and 50% of children would have blood type B, which are heterozygous.

When Parents are both heterozygous for the B blood group, then the possible blood group of offspring would be 75% B blood type (25% are homozygous and 50% are heterozygous) and 25% O blood type.

Learn more about blood groups, here:

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a) The child can only have Type A (50% chance) or Type B (50% chance) because type O is recessive and the man carries no recessive O gene.
b) The child could have a 75% chance of having Type B or a 25% chance of having Type O.

Moving through trophic levels _______. a. energy decreases b. entropy increases c. biomass decreases d. all of the above

Answers

Answer: The correct answer is A) Energy decreases.

Trophic level is a hierarchical level within an ecosystem that comprises of organisms having same functions within a food chain and have same nutritional relationships with respect to the source of energy.

For instance, producers form the first trophic level and all producers synthesize their food through photosynthesis.

As per the 10% law of energy transfer, transfer of energy from one trophic level to the next ( like from producers to primary consumers) is 10% and the rest 90% of the energy is utilized in various metabolic processes and released as heat in the atmosphere.

Thus, energy decreases as we move through different trophic levels.

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat. If a grassland ecosystem has 10,000 kilocalories (kcal) of energy concentrated in vegetation, only about 1,000 kcal will be transferred to primary consumers, and very little (only 10 kcal) will make it to the tertiary level. Energy pyramids such as this help to explain the trophic structure of an ecosystem: the number of consumer trophic levels that can be supported is dependent on the size and energy richness of the producer level.

Which of these is the most likely result of the polar ice caps melting?O A. The ocean would be much harder to cross in ships.
B. Many fish would die off because of changes in the salt water.
C. More tourists would go to beachside resorts for vacations.
D. The ocean currents would warm up all over the world.

Answers

Answer:

ummm...

its B bc the polar ice caps are fresh water.

hop this helps

Explanation:

How does radiometric dating help scientists pinpoint the age of a fossil? A. In radiometric dating, scientists mix the carbon in a fossil with carbon from similar fossils whose age they know. By comparing the carbon, they can tell the exact age of the fossil.
B. Radiometric dating allows scientists to find fossils in only the lowest and oldest layers of sediment.
C. In radiometric dating, scientists place samples of a fossil in certain liquids until the samples dissolve. The rate at which they dissolve indicates the age of the fossil.

Answers

Answer:

C. In radiometric dating, scientists place samples of a fossil in certain liquids until the samples dissolve. The rate at which they dissolve indicates the age of the fossil.

Explanation:

The radiometric dating is the technique that is used to date the rocks carbon contents and traces out their impurities.

When the fossils were formed and is compared with the abundance of the naturally occurring radioactive isotopes and is made of the chemical elements and fossils are kept in this solution to find their relative and absolute ages.

C. In radiometric dating, scientists place samples of a fossil in certain liquids until the samples dissolve. The rate at which they dissolve indicates the age of the fossil.

Can animals see in the dark better than humans?

Answers

Yes. Because their eyes give light they do. Just joking. Eyes reflecting is from other light sources. But they do have better night vision. Most of nocturnal animals have bigger eyes or pupils, which make it easier to catch up environmental light.

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