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Bad White [126]
3 years ago
7

Know the terms refraction, reflection and absorption as they refer to the movement of light waves

Biology
1 answer:
IrinaK [193]3 years ago
8 0
Three cases happen when a light wave strikes an object. Light waves can either be: absorbed, reflected or refracted. The differences are as follows:

a. Absorption - light stops at the object causing it to appear dark or opaque.
b. Reflection - this could happen either in a smooth or rough surface. On a smooth surface, for example mirror or glass, light bounces off the surface at angle equal to the incoming light wave. On a rough surface e.g. earth, light bounces at many angles because the surface is uneven.
c. Refraction - light goes through the object and bends at an angle. Typical thing you see when diamond  or water is struck by light. 
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Which of the following is correct about turnover number (kcat) and the specificity constant for an enzyme?
Mademuasel [1]

Answer:

B

Explanation:

Specificity constant-The ratio of Kcat/Km is called as specificity constant.

 Kcat-Turn over number

 Km-Michaelis constant

Specifictiy constant is the measure of enzyme efficiency .

4 0
3 years ago
20. Frigatebirds have webbed feet and spend much
Anettt [7]

Answer:

Evolution changes the abilities of the Frigate birds.

Explanation:

The Frigate birds have webbed feet because they live in the ocean and unable to fly due to its big weight. Before the evolution, the Frigate birds lives in the ocean due to their large body weight but with the passage of time, evolution occurs that leads to formation of flying ability in the bird so now the bird have the old characteristics of their ancestor as well as new abilities in the physical traits of the Frigate birds due to the evolution.

8 0
2 years ago
Explain the relationship between crossing over and genetic variation
7nadin3 [17]

Answer:

When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. It is obviously another source of genetic variation in offspring.

Hope this helps you. Do mark me as brainliest.

8 0
3 years ago
6. How might a disturbance in a food web impact other organisms in the marine<br> environment?
Viefleur [7K]

Answer:

When one thing dies, or is taken away from the food web, then this could happen:

Let's say plants are taken away. Then, herbivores have nothing to eat, sot hey die. Then, carnivores have nothing to eat, and the same thing happens, etc.

Plants are the base of survival for every organism in nearly every ecosystem.

3 0
3 years ago
Why does population size of a species rise and fall around the carrying capacity, rather than immediately stop growing and flatt
salantis [7]

Answer:

soarce google

Explanation:

Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. This flat upper line on a growth curve is the carrying capacity. The carrying capacity (K) is the maximum population size that can be supported in a particular area without destroying the habitat.

4 0
2 years ago
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