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MaRussiya [10]
2 years ago
10

Which muscle elevates the eyebrows and wrinkles the forehead?

Biology
2 answers:
Murljashka [212]2 years ago
6 0

Answer:

b. Frontalis

Explanation: is correct

Sveta_85 [38]2 years ago
4 0

Answer: Frontail muscle

Explanation:

The frontalis muscle is responsible for elevating the eyebrows, while the corrugator supercilii, orbicularis oculi, and procerus play a role in its depression. The function of the forehead is often spared in middle cerebral artery strokes.

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How is coffin-lowry syndrome inherited? Do both parents need to have the disorder in order for their child to have it?
svp [43]

Answer:

Explanation:

Coffin-Lowry syndrome is caused by changes (mutations) in the RPS6KA3 gene and is inherited in an X-linked dominant pattern. Males are usually more severely affected than females.

6 0
3 years ago
Restriction endonucleases are especially useful if they generate sticky ends. What makes an end sticky?
Mazyrski [523]

The question is incomplete as it does not have the options which are:

A) single-stranded complementary tails

B) blunt ends

C) poly-A sequences

D) 5' cap

E) interference

Answer:

A) single stranded complementary tails

Explanation:

Restriction endonuclease is the enzyme which cuts the DNA sequence in the internal sequence.

The endonuclease enzyme can cut the DNA sequence in a way that it can form the cuts with the single-stranded overhangs called sticky ends and without overhangs called blunt ends.

The sticky ends are produced when the enzyme makes cut at the single strand and then makes the cut at between the same base at the nitrogenous base. This type of asymmetrical cut forms the single-stranded overhangs which can form the complementary base pairs easily.

Thus, Option-A is correct.

5 0
3 years ago
Limiting factors in water bio mes include
lawyer [7]

Answer:

all of the above

Explanation:

Water biomes describe all the living things living in an area of water such as a lake or ocean. The surrounding environment plays a huge part in what organisms able to live there.

For example, green plants and algae require sufficient sunlight and oxygen to perform photosynthesis. Green plants and algae are an important food source for many other organisms. The amount of salt is important for various fish, as they will be unable to survive in very high salt concentrations. Therefore, all of the above are limiting factors.

3 0
3 years ago
Which of the following is a definition of the process of natural selection?
Gemiola [76]

Answer:

C

Explanation:

Mutations occur oftenly in organisms because it is seen as natural. Not all generations will give offsprings with perfect traits, They tend to have either 50/50 inherited traits from each parent of 100% off a parent if it was asexual reproduction.

7 0
2 years ago
Can someone help me i am failing in this class plz help btw its in Science class
Sedbober [7]
11. Is B. Ways scientists communicate results 
12. Is B. A globe
13. Is A. True 

 Hope they're all correct!
6 0
3 years ago
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