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andreyandreev [35.5K]
2 years ago
13

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Biology
2 answers:
skad [1K]2 years ago
7 0
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Bogdan [553]2 years ago
6 0

Answer:

u again...

Explanation:

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A muscle contracts in response to an electrical signal that signals the ______________, the unit of contraction, to shorten.
Ierofanga [76]

Answer:

Sarcomere

Explanation:

A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main protein filaments—actin and myosin—which are the active structures responsible for muscular contraction.

3 0
2 years ago
A hypothesis that appears to be supported by multiple experiments may be elevated to a general _____. experiment hypothesis theo
erma4kov [3.2K]
Theory because a theory has to be backed up by several experiments
4 0
3 years ago
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The feelings of heat and pain associated with eating hot peppers are primarily due to what mechanism?.
Ierofanga [76]

Answer: A specific chemical binding to nociceptors

Explanation:

7 0
2 years ago
What could a scientist do to determine what era the Eocene Period belongs to on the geologic time scale?
Burka [1]

Answer:

Option B) study information related to the Cenozoic era

Explanation:

The complete question is

Scientists discovered that the Eocene time period existed in Earths history around 34 MYA. What do they need to do to determine what time period Eocene belongs to on the geologic time scale?

A) learn what happened during Precambrian time

B) study information related to the Cenozoic era

C) view the timing of events in the Mesozoic era

D) research events that happened during the Paleozoic era

Solution -

The period of Eocene belong to the Cenozoic era. The Cenozoic era is divided into three periods-  

a) The Paleogene – Existed between 65.5 to 23.03 million years ago

b) The Neogene - Existed between 23.03 to 2.6 million years ago

c) The Quaternary – Started some 2.6 million years ago and is continuing till present

The Paleogene is subdivided into three epochs –  

A) The Paleocene – existed between 65.5 to 55.8 million years ago

B) The Eocene – existed between 55.8 to 33.9 million years ago and  

C) The Oligocene – existed between 33.9 to 23.03 million years ago

Hence, studying about Cenozoic era will give information about the Eocene epoch

Hence, option B is correct

5 0
3 years ago
Which of the following is the correct sequence in which a DNA sequence is used to produce a protein?
mrs_skeptik [129]
C of course
C is the answer
4 0
2 years ago
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