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Sloan [31]
3 years ago
13

Which of the following can limit the growth of a population of organisms

Biology
1 answer:
timurjin [86]3 years ago
3 0

Answer:

-lack of food in the area

-more predators

-envirment changes

-over population

Explanation:

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Question 1 of 20 : Select the best answer for the question. 1. Suppose a population is carrying a condition controlled by two al
lianna [129]
Genotype frequency: RR is dominant, Rr is heterozygous and rr is recessive.

R^2+2Rr+r^2 = 1

R = 0.85

R^2= 0.85*0.85 = 0.7225
7 0
3 years ago
How many grams of the compound in the figure above are required to make 1 liter of a 0.5 M solution? (Note: The atomic masses, i
Dafna1 [17]

Answer:

This question is incomplete as there is no figure in the question but the compound in the figure is Ethanoic acid (CH3COOH). Hence, we can calculate the mass.

The answer is: 30grams

Explanation:

According to the question, the volume of the compound (CH3COOH) is 1litre while the molar concentration is 0.5M

Molarity or Molar concentration is calculated using the formula:

M= n/V

Where; M= Molarity (M) = 0.5M

n= number of moles (mol)

V= Volume (V) = 1L

Hence, number of moles (n) = M × V

n = 0.5 × 1

n = 0.5 moles.

To calculate the mass in grams of CH3COOH, we say;

Number of moles (n) × molar mass (MM)

Since atomic mass for (C= 12, H= 1 and O=16)

Molar mass of CH3COOH:

= 12 + 1(3) + 12 + 16 + 16 + 1

Molar mass of CH3COOH = 60g/mol

Mass (in grams) of CH3COOH = 0.5 moles × 60g/mol

Mass = 30grams.

Therefore, 30grams of CH3COOH compound are required to make 1 liter of a 0.5 M solution.

6 0
3 years ago
The antigen-binding sites of an antibody molecule are formed from the molecule's variable regions. why are these regions describ
tino4ka555 [31]

The antigen-binding sites of an antibody molecule are formed from the molecule's variable regions which are described as so because their amino acid sequences can be different on different antibodies.

The specificity of antibodies is determined by the variable regions found at their endpoints. Antibodies are specialized proteins secreted by B-cells of the immune system. They are also called immunoglobulins. They contain four polypeptide chains that comprise two heavy chains and two light chains to form a Y-shaped molecule.

The variable regions, more specifically the hypervariable regions of an antibody, have a high ratio of different amino acids with the most common amino acids provided in one place. The variable region serves as the antigen-binding site while the constant region found below the variable region is determined to invade the antigen.

Antibodies are preserved in our body to identify the antigen the next time it encounters. They send the signals to the other body parts to reject the antigen and invade it.

To know more about variable regions of antibodies, refer to the following link:

brainly.com/question/17439586
#SPJ4

8 0
2 years ago
How are mitochondria similar to chloroplasts? Both have many layers of membranes. Both contain molecules of chlorophyll. Both ar
lorasvet [3.4K]

Answer:

Both have many layers of membranes

Explanation:

4 0
3 years ago
HELPP PLEASE!!! I’ll MARK YOU IF YOU ANSWER PLEASE
Scorpion4ik [409]

Answer:

Explanation:

Studying history enables us to develop better understanding of the world in which we live. Building knowledge and understanding of historical events and trends, especially over the past century, enables us to develop a much greater appreciation for current events today.

hope thats what your looking for

6 0
3 years ago
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