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mote1985 [20]
3 years ago
8

Facilitated diffusion requires energy expenditure by the cell. a. True b. False

Biology
1 answer:
OverLord2011 [107]3 years ago
7 0
The answer to me is false. Hope this helps!!!
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A shark and a dolphin have similarly shaped bodies and fins. However, these two organisms are not closely related: The shark is
algol13

Answer:

The preferable option will be - A.

A. similar environments and specific traits increased their chances of survival.

Explanation:

  • The shark and dolphins have similar body shape and fins. But shark is a fish and dolphin is a mammal.
  • Both of them are exposed to similar kind of environments. Both of them possess a specific kind of alternative characters and traits.  
  • So, Some species may have similar body structures even if they are not related because they evolved in similar environments and specific traits increased their chances of survival.

 

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2 years ago
a type of blindness, occurs in humans and is due to a dominant allele, A. Normal vision is due to the allele, a. Migraine headac
Scorpion4ik [409]

Answer:

The man's father genetics for aniridia is XAY because one copy of the altered gene in each cell is sufficient to cause this disorder.

Explanation:

The aniridia allele in females has to be in the XAXA or XAXa form to be expressed but in males, can be expressed when genotype is XAY.

Migraine headaches allele in females has to be in the XMXM or XMXm form to be expressed but in males, can be expressed when genotype is XMY.

A man with normal vision and without migraines (XaY/XmY) had a father who had aniridia (XAY).

The man's father genetics for aniridia is XAY because one copy of the altered gene in each cell is sufficient to cause this disorder.

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3 years ago
Name one function of the respiratory system other than gas exchange?​
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I see someone answering for u
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The ________ helps keep food between the grinding surfaces of the teeth during chewing.
miskamm [114]
The answer is the muscular system
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2 years ago
What does an Mrna molecule play in the flow of information for protein synthesis
dimaraw [331]


mRNA plays a crucial role in protein synthesis. It carries the information for synthesis of a particular protein from the DNA to the ribosomes.

In the cell nucleus, this information is copied (transcribed ) from DNA and onto mRNA. mRNA then leaves the nucleus and enters the cytoplasm where it attaches to a ribosome.

Transfer RNA or tRNA  begins to read (translate) the information on the attached mRNA and from the pool of free amino acids in the cytoplasm, fetches the amino acids that corresponds to the information, and brings them to the ribosome where they are linked together into a chain, forming the primary structure of protein.

3 0
3 years ago
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