Answer:
The question lacks options, the options are:
A) All cells contain a nucleus.
B) All cells come from other living cells
C) All living organisms are made of one or more cells.
D) Cells are the basic unit of structure and function of all living things.
The answer is A
Explanation:
In 1830's, three scientists named; Mattias Schleiden, Theodor Schwann and Rudolph Virchow contributed to describing the basic properties of the cell, which they proposed in their so named CELL THEORY. This widely accepted cell theory has three components:
All living organisms are made up of one or more cells.
Cells are the basic and fundamental unit of life
All existing cells come from cells that have previously existed.
It was not proposed that all cells have a nucleus
A radioactive element is an element which is subject to spontaneous degeneration of its nucleus followed by the emission of alpha, beta and gamma particles. All elements with atomic numbers greater than 83 are radioactive.
The given phrases that describe radioactive elements are-
They have a consistent number of particles
- the particles are alpha, beta and gamma particles.
They have a half-life that determines their rate of decay.
Explanation for other options:
Not all elements occur in nature. Radioactive decay rates may not be constant as the decay happens when a radioactive substance emits a particle. It is not possible to predict exactly when a given atom of a substance will emit a particular particle. When the radioactive element release energy and particles, it decays.
EXPLANATION:
Various steps involved in the identification of unknown bacteria are:
Various steps involved in the identification of unknown bacteria are:Isolation: The importance of this step is to isolate pure colonies of bacteria. ...
Various steps involved in the identification of unknown bacteria are:Isolation: The importance of this step is to isolate pure colonies of bacteria. ... Staining Reactions: ...
The pointer is indicating the virus virus's genome.
Happy Studying! ^0^
Assessing flexibility, strength and movement patterns is therefore always a good idea.
1) Lying Pelvic Tilt
2) Standing Pelvic Tilt (SPT)
3) Learn and Ingrain the Hip Hinge Pattern
4) Strengthen the Posterior Pelvic Tilt Movement Pattern/Muscles that Produce Posterior Pelvic Tilt
5) Incorporate squats, deadlifts, presses, and other compound lifts with good technique
