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Colt1911 [192]
3 years ago
13

Explain how a crayfish is designed to be a bottom feeder.

Biology
1 answer:
vodka [1.7K]3 years ago
6 0

Bottom feeders are aquatic animals that feed on the bottom of a body of a water. Crayfish is the bottom feeder. It is not active swimmer, it feed on stationary or slow pray, so it does not have such a streamlined body necessary to reduce drag during swimming. Its mouth is located on the underside of their heads and that way mouth is closer to the bottom where their food is.

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The glucose transporter used by cells to obtain glucose from the media is a protein embedded in the membrane. When researchers f
jeka57 [31]

Answer:

a. It's a carrier protein doing facillitated diffusion

Explanation:

Facilitated diffusion may be defined as the transportation of molecules from a high concentration to a low concentration that is down the concentration gradient without input of the energy. Whereas the active transport is transportation of the molecules from the low concentration to the high concentration which is against concentration gradient by the membrane protein.

The glucose transportation process requires membrane protein for the transport and does not require any energy. Therefore, it is carrier protein which is doing the facilitated diffusion.

3 0
3 years ago
Based on the concept of the global conveyor belt, what happens to ocean water as it moves from Antarctica to the equator?
marta [7]

What happens to the ocean water as it moves from Antarctica to the equator is : ( B ) It becomes less dense and rises to the surface.

<h3>Concept conveyor belt </h3>

The conveyor belt is a system of oceans which transports water and propel deep current of water bodies across the globe based on the differences in water densities.

As the ocean water moves from the Antarctica to the equator the cold ocean water mixes with the warm ocean water at the equator, which makes the water less dense and rises to the surface.

Hence we can conclude that What happens to the ocean water as it moves from Antarctica to the equator is  It becomes less dense and rises to the surface.

Learn more about the conveyor belt : brainly.com/question/14910379

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8 0
2 years ago
Read the article to learn more about the human chromosomes. Use chromosomes 11 and 17 to answer the following questions.
marin [14]

Explanation:

Chromosome 11 is made of over 130 million base pairs.

Approximately how many genes are found on chromosome 11? 2000

4 0
3 years ago
Read 2 more answers
The diagram represents the functional unit of a nervous system. Which structure secrets a neurotransmitter.
Georgia [21]
The cells of the CNS are called neurons. They secrete neurotransmitters.
8 0
3 years ago
How does the expression of Delta on the surface of a cell activate the expression of certain genes in the nucleus of its neighbo
irina1246 [14]

Answer:

Delta binds to the Notch receptor and this binding produces the cleavage of its intracellular domain, which subsequently enters into the cell nucleus to bind with a repressor in order to activate the transcription

Explanation:

The Notch signaling pathway is initiated when Notch receptors on the cell surface bind to the Delta ligand, which activates Notch signaling in cells next to it. In the receiving cell, Delta–Notch binding triggers the cleavage of the Notch intracellular domain called Nic (intracellular Notch). Subsequently, Nic enters into the cell nucleus where it releases repression on Suppressor of Hairless (Su(H)) class transcription factors, thereby activating the transcription of target genes.

7 0
2 years ago
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