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2 years ago

Petrification occurs when:

Biology

1 answer:

LenaWriter [7]2 years ago

6 0

Answer:

(B) shell and bone are replaced with minerals

Explanation:

Petrification is simply turning into stones. It is one of the ways of fossilization which helps to preserve an organism from decay and total loss from the stratigraphic record.

In this process, soft parts of an organism are replaced by minerals
The minerals crystallize and becomes solidified.

This process is therefore known as petrification.

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Which of these is the movement of material caused by the interaction between warm and cool material?

lesya692 [45]

Convection Current
This happens when there is a noteworthy contrast in temperature between two sections of a liquid. At the point when this temperature distinction exists, hot liquids rise and cool liquids sink, and after that streams, or developments, are made in the liquid

7 0

3 years ago

We are studying 3 strains of bacteria, with populations p1, p2, p3, in an environment with three food sources, A, B, C. In a day

Nastasia [14]

Answer:

The population of each bacteria in 1, 2, 3 are 12, 8, and 7 respectively.

Explanation:

From the given information:

For food source A; we have:

3P₁ + P₂ + 2P₃ = 58 units of food A ---- (1)

For food source B; we have:

2P₁ + 4P₂ + 2P₃ = 70 units of food B ---- (2)

For food source C; we have:

P₁ + P₂ = 20 units of food C ----- (3)

From equation (1) and (2); we have:

3P₁ + P₂ + 2P₃ = 58

2P₁ + 4P₂ + 2P₃ = 70

By elimination method

3P₁ + P₂ + 2P₃ = 58

2P₁ + 4P₂ + 2P₃ = 70

P₁ = -12 + 3P₂ ---- (4)

Replace, the value of P₁ in (4) into equation (3)

P₁ + P₂ = 20

-12 + 3P₂ + P₂ = 20

4P₂ = 20 + 12

4P₂ = 32

P₂ = 32/4

P₂ = 8

From equation (3) again;

P₁ + P₂ = 20

P₁ + 8 = 20

P₁ = 20 - 8

P₁ = 12

To find P₃; replace the value of P₁ and P₂ into (1)

3P₁ + P₂ + 2P₃ = 58

3(12) + 8 + 2P₃ = 58

36 + 8 + 2P₃ = 58

2P₃ = 58 - 36 -8

2P₃ = 14

P₃ = 14/2

P₃ = 7

Thus, the population of each bacteria in 1, 2, 3 are 12, 8, and 7 respectively.

4 0

3 years ago

Discuss what is meant by heterozygote advantage and use sickle-cell anemia as an example

vodomira [7]

When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. In other words this occurs when heterozyhotes have increased fitness over both homozygotes. A good example is sickcle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.

6 0

3 years ago

This is where the genetic information is found in a eukaryotic cell? A) nucleus B) cytosol C) mitochondrial D) endoplasmic retic

Lelechka [254]

In eukaryotic cells, all the genetic information, in other words, the DNA is found in the nucleus, where its arranged in chromosomes. Therefore, the answer is A).

In the other hand, in prokaryotic cells, it isn't inside any special structure. Instead, it's just dispersed through the cytoplasm.

Hope it helped,

BioTeacher101

7 0

3 years ago

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When an amoeba undergoes reproduction, the end result are two totally independent organisms. Which term best describes the amoeb

never [62]

Answer:

C. Fission

Explanation:

Amoeba reproduces by asexual reproduction method - binary fission. After replicating its genetic material through mitosis, the cell divides into two independent equal sized daughter cells.

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3 years ago

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