Why is the African savanna a good example of the three scientific principles of sustainability in action

Although each of the following has a better chance of influencing gene frequencies in small populations than in large population

MakcuM [25]

Answer:

genetic drift

Explanation:

Genetic drift is an evolutionary force that requires the presence of a small population. It is a random process that fixes one or other alleles randomly in the gene pool of a population. Genetic drift does not take account of survival fitness imparted by alleles to the individuals. Since random and chance events such as the death of all the individuals having a certain allele in a population affect the small population more intensely, genetic drift works on small populations only.

4 0

3 years ago

Read 2 more answers

If your blood becomes too diluted, what will happen to the red blood cells?

kifflom [539]

Answer:

The red blood cells will burst or rupture when it is diluted and it will be one transparent and visible.

Explanation:

This is because when red blood cells are in water or become too diluted,water will enter the red blood cells through the process of osmosis. Because water is an hypotonic solution, water from outside of the cell to the inside making the cells to continue to swell up and rupture ,a phenomenon known as haemylosis. When the red blood cells rupture, it loses haemoglobin and it's become transparent and visible.

8 0

3 years ago

Distinguish between major classes of biomolecules, proteins, lipids, carbohydrates, nucleic acids?

olasank [31]

Answer:

Proteins (polymers of amino acids)

Carbohydrates (polymers of sugars)

Lipids (polymers of lipid monomers)

Nucleic acids (DNA and RNA; polymers of nucleotides)

Explanation:

Proteins:

Chemical formula is CHON

−NH2 + −COOH +R group

Monomer is Amino acids.

Examples are enzymes, and some hormones.

Uses are Storage; Signals; Structural; Contractile; Defensive; Enzyme; Transport; Receptors.

Lipids:

Chemical formula is C:H:O

Greater than 2:1 H:O (carboxyl group)

Monomer is fatty acid and glycerol.

Examples are butter, oil, cholesterol, beeswax.

Functions are energy storage; Protection; Chemical messengers; Repel water.

Carbohydrates:

Chemical formula is C:H:O

1:2:1

Monomer is monosaccharides.

Examples are Glucose, Fructose, Starch, Glycogen, Cellulose.

Uses are energy storage; structure.

Nucleic Acids:

Chemical formula is CHONP

(pentose, nitrogenous base, phosphate ).

Monomer is nucleotides.

Examples are DNA, RNA.

Uses are Genetic information

5 0

3 years ago

Read 2 more answers

Calculate the acceleration of a boat that has been cruising at 15 m/s but speeds up to 45 m/s in about 6 seconds. Don’t forget y

Vera_Pavlovna [14]

Calculate the acceleration of a boat that has been cruising at 15 m/s but speeds up to 45 m/s in about 6 seconds. Don’t forget your units, m/s2. In order to calculate the acceleration of the boat we first have to identify the suited formula for acceleration in this scenario.

Hence, a = vf – vi / t. Vi = 15 m/s Vf = 45 m/s T = 6 seconds

Solution:
A = 45 m/s – 15m/s / 6s
A = 5m/s^2

6 0

3 years ago

Read 2 more answers

A polysome is ____. a. the complex that adds a poly(A) tail onto an mRNA b. an mRNA transcript to which multiple ribosomes

WARRIOR [948]

Answer:b. an mRNA transcript to which multiple ribosomes are attached

Explanation: polysome consist of mRNA complex and two or more ribosome coming together to translate mRNA into a polypetide or amino acid. It helps produce many polypeptide from a single mRNA.

Different ribosomes bind to the mRNA at different time elongating the polypeptide chain. We have the free( non-poly A ) and memberane bound (poly A) polysome.

7 0

3 years ago