The short answer is that velocity is the speed with a direction, while speed does not have a direction. Speed is a scalar quantity—it is the magnitude of the velocity. Speed is measured in units of distance divided by time (e.g., miles per hour, feet per second, meters per second, etc.).
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B: carnivores eat both plants and other animals
C: carnivores eat producers
D: carnivores eat animals that eat plants
The answer is c. They eat producers
Answer:
C. Carnivores eat producers
Explanation:
1 2.45 g
2 2.40 g
3 2.42 g
which of the following best describes the students measurements
the students measurements were accurate, but not precise
the students measurements were precise, but not accurate
the measurements are neither accurate nor precise
the measurements are both accurate and precise
Answer:
Option , B, the students measurements were precise, but not accurate
Explanation:
It is given that the acceptable value for the paper clips is 1.14 grams.
An accurate value is the one which is close enough to the accurate answer and in case when the number of readings taken with in an experiment are close to each other then they are said to be precise.
Here the value obtained through three reading are close to each other hence, they are precise but none of these values is close to the acceptable value for the paper clips.
Hence, option B is correct.
The MC1R gene gives directions for producing a protein known as the melanocortin 1 receptor. This receptor performs an essential function in normal pigmentation. The receptor is mainly situated on the melanocytes surface that are unique cells, which generate a pigment known as melanin.
Melanin is generated by the melanocytes located in the basal layer of the epidermis. The MC1R monitors the production of both pheomelanin and eumelanin.
The MC1R gene most prevalent among people of African ancestry produces eumelanin, a type of melanin. This melanin is responsible for their darker skin pigmentation, especially with UV exposure which stimulates melanocyte's production of more melanin.
The type of melanin produced by the version of the MC1R gene most prevalent among people of African ancestry is eumelanin. Melanin occurs in two forms: eumelanin which is black or brown and pheomelanin which provides a red color. People of African ancestry produce more melanin, specifically eumelanin, which provides a darker pigmentation. The MC1R gene plays an essential role in the synthesis of melanosomes, causing skin pigmentation.
For instance, when skin is exposed to the Ultraviolet (UV) rays from the sun, the UV rays stimulate keratinocytes to secrete chemicals which in turn stimulate melanocytes. The melanocytes increase the production of melanin which results in the darkening of the skin, also known as sun tan.
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