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Afina-wow [57]
3 years ago
7

The myofilaments used during muscle contractions will return to their resting state when the _____ relax.

Biology
1 answer:
andre [41]3 years ago
8 0

The correct answer is sarcomere.

A sarcomere refers to the fundamental unit of striated muscle tissue. It is the reiterating unit between the two Z lines. The skeletal muscles comprise tubular muscle cells known as muscle fibers or myocytes that are produced in the procedure called myogenesis.

When the muscle fibers of a motor unit attain an impulse, it instigates a response in each sarcomere between the myosin and actin filaments. This response leads to a start of a contraction and the sliding filament theory.

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Black fur (B) is dominant to white fur (b) in guinea pigs. An F1 cross was conducted and resulted in 100% heterozygous guinea pi
Lemur [1.5K]

Answer:

D. 1 BB : 2 Bb : 1 bb

Explanation:

This question involves a single gene coding for fur color in guinea pig. Black fur (B) is dominant over white fur (b). This means that, as stated in the question, if a black fur parent (BB) is crossed with a white fur parent (bb), a 100% heterozygous offspring (Bb) with black fur will result.

If two heterozygous guinea pigs are crossed i.e. Bb × Bb, the following gametes will be produced by each heterozygous parent:

Bb = B and b

Using these gametes in a punnet square (see attached image), offsprings with the following genotypic ratio will be produced:

1 BB : 2 Bb : 1 bb

BB and Bb = black fur guinea pigs

bb = white fur guinea pigs

3 0
3 years ago
10 POINTS !!!!!!!!!!!!!!!!!!!!<br> ANSWER!!!!!!!!!!!!!!!!!!!!!
JulijaS [17]

Answer:

The answer is 8

Explanation:

At a pH of 8, the number of duckweed plants was the highest.

4 0
3 years ago
The quantity of each type of organelle in a cell varies depending on the tasks the individual cell must perform. If a scientist
tester [92]

The correct answer is option C. A leaf growing in full sunlight

The chloroplast is an organelle, which helps the plants to carry out the process of the photosynthesis. The leaves are the main site of the photosynthesis in the plants, hence, they have an abundant number of chloroplasts present in the cells. In the presence of the sunlight, they perform the light dependent reactions of the photosynthesis process. In case, a scientist find out the cell, which have a high number of chloroplast, then the cell must be specialised to perform photosynthesis, hence, the cell would belong to the leaves, which are growing in full sunlight.  

6 0
3 years ago
Read 2 more answers
Which of the following do prokaryotes not contain?
Hoochie [10]
It has no definite nucleus but a region containing chromosome called nucleoid.
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"critical paths" and boards, bureaus, centers, cells and working groups (b2c2wg) that support the synchronization processes incl
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Critical paths and boards, centers, cells, bureaus, and working groups which support the synchronization processes includes, 

1. Stability actions.
2. Lethal fires.
3. Information actions. 

The critical paths which involve development working groups and identify assess, the resource is the steering.
5 0
3 years ago
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