What is the control center of the bacteria cell

Answers

Answer 1

Answer:

The bacteria being a prokaryote have free-floating DNA in their cytoplasm as their control center.

What is DNA?

DNA has been defined as the genetic material present in major organisms including prokaryotes and eukaryotes. It consists of hereditary information that is passed on from one generation to another.

The bacteria being a prokaryote has their genetic material (DNA) in a free-floating state in the cytoplasm rather than being constrained in a nuclear envelope, unlike the eukaryotes.

DNA acts as the control center for the bacteria as it codes for genetic information, metabolism, and development and regulates all cellular activities as well.

Therefore, DNA is the control center of the bacterial cells.

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Answer 2

Answer: The control center of the bacteria cell is RNA is "free floating".

Till then. -ayeitswesley

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2 PointsWhich of the following statements are not true about gravity? Check all that
apply.
A. Gravity exists only on Earth.
O
B. Gravity exists between two objects that have mass.
O
C. Gravity is a force that pulls two objects together.
D. Gravity exists in the whole universe.
E. Gravity doesn't exist between Earth and the sun.

Answers

the answers are A and E!

A merry -go-round rotates at the rate of 0.4rev / s with an 78 kg man standing at a point 1.5 m from the axis of rotation. What is the new angular speed when the man walks to a point m from the center? Consider the merry-go-round is a solid 11 kg cylinder of radius of 1,5 m. Answer in units of rad/s. 024 (part 2 of 2) 10.0 points What is the change in kinetic energy due to this movement ? Answer in units of

Answers

1) Final angular velocity is 5.22 rad/s

2) Change in kinetic energy: 639.8 J

Explanation:

In absence of external forces, the angular momentum of the merry-go-round must be conserved.

So we can write:

$L_1 = L_2\nI_1\omega_1 = I_2 \omega_2$

where

$I_1$ is the initial moment of inertia

$I_2$ is the final moment of inertia

$\omega_1$ is the initial angular velocity

$\omega_2$ is the final angular velocity

At the beginning, we have:

$\omega_1=0.4 rev/s \cdot 2\pi = 2.51 rad/s$

The moment of inertia is the sum of the moment of inertia of the cylinder + the moment of inertia of the man, therefore:

$I_1 = (1)/(2)MR^2+mr^2=(1)/(2)(11)(1.5)^2+(78)(1.5)^2=187.9 kgm^2$

The man later walks to a point 1 m from the centre, so the final moment of inertia is:

$I_2 = (1)/(2)MR^2+mr^2=(1)/(2)(11)(1.5)^2+(78)(1)^2=90.4 kgm^2$

Therefore, the final angular velocity is

$\omega_2 = (I_1 \omega_1)/(I_2)=((187.9)(2.51))/(90.4)=5.22 rad/s$

The angular velocity of the merry-go-round rotating is given by

$K=(1)/(2)I\omega^2$

In the first situation, we have

$I_1 = 187.9 kg m^2\n\omega=2.51 rad/s$

Therefore

$K_1 = (1)/(2)(187.9)(2.51)^2=591.8 J$

In the second situation, we have

$I_2= 90.4 kg m^2\n\omega_2=5.22 rad/s$

Therefore

$K_2=(1)/(2)(90.4)(5.22)^2=1231.6 J$

So the change in kinetic energy is

$\Delta K = K_2 - K_1 = 1231.6-591.8=639.8 J$

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Which of the following quantities is a velocity?A. 25 m/s
B. 3 g/L in weight
C. 15 m/s2
D. 10 km/hr eastward

Answers

Velocity of a moving body is its distance covered by time. Thus, it has the unit of m/s, km/hr. etc. . Therefore, among the given options, 25 m/s and 10 km/hr. are represents a velocity.

What is velocity ?

Velocity is a physical quantity having both direction and magnitude. Thus, it is a vector quantity and it measures the distance covered by an object per unit time.

Velocity is the ratio of distance to the time, hence its units are m/s, km/hr etc. The rate of change in velocity is called acceleration. Thus acceleration is change in velocity by change in time. Thus, its unit is m/s². Hence, 15 m/s² represents acceleration.

The quantity 3 g/L represents the mass per volume and hence it is density of a substance or can be the concentration of a solution. Thus, options A and D are correct.

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Answer:A

Explanation:

It’s A because the velocity is measured in m/s

Explain why buildings are wired using parallel circuits rather than series circuits

Answers

In a series circuit . . .

There is only one path for current to take.

All the way from one terminal of the power supply, through all of
the lights, computers, vending machines, air conditioners and
everything else in the building, to the other terminal of the electric
supply. One path !

So the current for EVERY device has to flow through ALL of them,
because that's the only path there is.

If any ONE device in the building was turned off, burned out, or
unplugged from the outlet, then there would be NO PATH for the
current, and everything in the building would lose power !

Not a very convenient way to operate a house or a building.

Force and Motion: Force changes _________.

Answers

net force, i think could be a possible answer

speed I'm pretty sure

Identify each wave interaction based on how it changes direction. The wave changes direction as it bends and scatters. _______

The wave changes direction as it changes its speed. _______

The wave changes direction at an angle equal to the angle of incidence. ________
diffraction
reflection
refraction

PLEASE HELP!!

Answers

Answer:

Here is the answer.

Explanation:

The answers are:

1. Diffraction

2. Refraction

3. Reflection

Hope this helps!

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