Answer:
A) Gravity is the force that pulls objects toward Earth's center.
Explanation:
i took the quiz on ed.
Answer:
Explanation:
According to the nutrition between the fox, the rabbit and the lettuce, it can be concluded:
-All three belong to the food chain of a specific region.
-The lack of any, would make the chain unbalanced, breaking it.
-The fox is a carnivore, so it feeds on the rabbit. While the rabbit is herbivorous, it feeds on plants.
-The rabbit and the fox are mammals, while the lettuce belongs to the Asteraceae family.
The media are widely used in microbiology laboratories to isolate and identify specific bacterial species or groups based on their growth characteristics and metabolic activities.
Yes, a media can indeed be both selective and differential, and such media are commonly referred to as "selective-differential media" or "selective and differential media."
These types of media are designed to encourage the growth of specific microorganisms while also allowing for the differentiation of various microbial groups based on their metabolic characteristics or other properties.
Here's how they work:
1. **Selective Aspect:** Selective media contain ingredients that inhibit the growth of certain types of microorganisms while promoting the growth of others.
This selectivity is achieved through the addition of chemicals or compounds that inhibit the growth of unwanted microbes. For example, the addition of salts, dyes, or antibiotics can inhibit the growth of specific bacterial species.
2. **Differential Aspect:** Differential media contain indicators that allow for the differentiation of microorganisms based on their metabolic activities.
These indicators can be substances that react with specific metabolic byproducts produced by microorganisms, causing observable changes in the media.
For example, pH indicators can change color in response to the production of acids or alkaline compounds by different bacteria.
Common examples of selective-differential media include:
- **MacConkey Agar:** Selective for Gram-negative bacteria and differential for lactose fermenters (pink colonies) vs. non-lactose fermenters (colorless colonies).
- **Mannitol Salt Agar:** Selective for staphylococci and differential for mannitol fermenters (yellow colonies) vs. non-fermenters (pink/red colonies).
The combination of selective and differential properties allows microbiologists to efficiently screen for the presence of target organisms and gain valuable information about their biochemical capabilities.
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blood type
B.
skull size
C.
finger length
D.
skin color
B) The two systems must not be touching each another.
C) One system must have higher kinetic energy than the other system.
D) The thermal energy of one system must be the same as the thermal energy of the other system.
B)Stabilizing selection
C)Disruptive selection
b. biotic
Organisms within an ecosystem are biotic factors in that ecosystem. Thus, option B is correct.
The term biotic factors has been defined as living factors present in the ecosystem. Biome is a separate biogeographical region that contains its own living and non-living factors along with a characteristic climate. The examples of biomes are: Tundra, Temperate, Desert, etc.
Changing a biotic or abiotic factor can affect each other or even the entire biome because these factor live in a state of dynamic equilibrium by being interdependent on each other. Therefore, if this equilibrium is disturbed then the survival of some living organism may be disturbed that can eventually lead to ecological succession.
The nitrogen cycle is a biogeochemical succession process of nitrogen that involves: fixation, ammonification, nitrification, and denitrification. Like any other biogeochemical cycles. This process undergoes and affects the biological, geometrical and chemical aspects in the ecosystem and the abiotic and biotic community.
Therefore, Organisms within an ecosystem are biotic factors in that ecosystem. Thus, option B is correct.
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