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kherson [118]
3 years ago
12

nick wanted to seehow high an ice cube would float in different temperatures of water. identify the dependent variable.

Biology
1 answer:
Karolina [17]3 years ago
3 0
The dependent variable is how high the ice cube floats (measured in units).
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Which portion of a phospholipid molecule would be facing the environment outside of the cell?
SIZIF [17.4K]
The hydrophilic (water-loving) head.
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3 years ago
Ions are
luda_lava [24]

Answer:

Ions are atoms with a positive or negative charge.

Explanation:

Ions are atoms or molecules that, when subjected to the phenomenon of ionization, gain or lose electrons, ceasing to be neutral and acquiring an electric charge.

The charge that atoms or molecules possess can be positive —if it has lost electrons— or negative when it acquires electrons. The negatively charged particle is called anion, and when it is positively charged cation.

The other options are not correct because of:

  • <em>There are usually as many or more neutrons than protons. </em>
  • <em>Uncharged atoms are neutral. </em>
  • <em>The number of protons or neutrons does not affect the electric charge of the atom.</em>
  • <em>Atoms that joined in fixed proportions can form molecules.</em>

7 0
3 years ago
The complex structures of DNA and protein found in the cell nucleus are mitochondria. nucleoplasm. histones. nucleases. chromoso
mario62 [17]

Answer:

chromosomes

Explanation:

Genomics refers to the scientific study of genes (DNA) found in living organisms such as humans and animals.

A genome can be defined as the complete set of hereditary instructions that is typically found in the deoxyribonucleic acid (DNA).

The complex structures of deoxyribonucleic acid (DNA) and protein found in the cell nucleus are generally referred to as chromosomes.

In sexual reproduction, the chromosomes from parents are found in the cell nucleus and are comprised of deoxyribonucleic acid (DNA), histone proteins, etc. Thus, they are used to store genetic informations in living organisms.

Basically, the human somatic cell is made up of 46 chromosomes which are sub-divided into 22 pairs of autosomes and a pair of sex chromosomes (X and Y). An autosome is one of the numbered chromosome that is typically not a sex chromosome.

On the other hand, sex chromosomes (X and Y) are responsible for determining the gender or sex of living organisms such as humans.

5 0
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True or false? as a general rule, females experience more effects from a given dose of alcohol than do males.
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True as far as I know. 
4 0
3 years ago
how does the random alignment of homologous chromosomes contribute to genetic variation in a population
SCORPION-xisa [38]

The assortment of homologous chromosomes during meiosis is random and generates genetic variation, the raw material for evolution.

During metaphase I of meiosis, homologous chromosomes are lined up at the equator plate of the cell in order to be separated (assorted) in anaphase I.

The separation of homologous chromosomes during meiosis I is random. Daughter cells receive unique gene combinations from an original parent cell.

Subsequently, haploid cells got from two successive meiotic divisions fuse during fecundation to form a diploid (2n) zygote.

During prophase I, non-sister chromatids interchange genetic material by a process known as recombination. This genetic process also increases genetic variation in daughter cells.

In conclusion, the assortment of homologous chromosomes during meiosis is random and generates genetic variation.

8 0
3 years ago
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