another question for help with biology h/w?

Question

it says ....some relatively simple eukaryotes, such as the adder's tongue fern, may have many more chromosomes than a more complex eukaryote, such as a mammal. what might this suggest about the size and organization of chromosomes in different species?

Answer 1

Large chromosome numbers arise from polyploidization. Since simpler eukaryotes have been around longer, perhaps they have had more time to undergo polyploidization.

Answer 2

If a more complex organism has fewer chromosomes, or smaller chromosomes than a less complex organism, it suggests to me that the complex organism make more efficient use of its chromosomes or genetic material.

Answer 3

Protons, neutrons, and electrons
Inside an atom
An atom is the smallest particle of an element that can still be defined as that element. atom we can find three types of particle. These are called protons, neutrons, and electrons.

The protons and neutrons are crammed into the centre of the atom, called the nucleus. This is where the mass of an atom is concentrated.

The electrons are found orbiting the nucleus
The nucleus is the centre of an atom, containing protons and neutrons. nucleus in specific energy levels or shells.

protons and neutrons have the same mass (approximately), but an electron
Electrons are tiny, negatively charged particles that orbit the nucleus of an atom in energy levels (or shells). electron has a mass of only 1/1840 of a proton or neutron.