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OlgaM077 [116]
4 years ago
10

Compare the modern Cell Theory to the original Cell Theory

Biology
1 answer:
CaHeK987 [17]4 years ago
6 0
The statements of the old cell theory are:
1. All organisms are composed of cells
2. The cell is the basic unit of life
3. Cells are produced from existing cells

The modern cell theory's statements are:
1. The cell contains hereditary information which is passed to daughter cells
2. All cells are basically the same in composition and activity
3. All basic functions occur in cells
4. Cell activities depend on intracellular structures

As is visible from the statements, the old cell theory was not as detailed and lacked the understanding of the function, structure and behavior of cells that the current theory possesses. This difference has come about after years of research, through which scientists understood the functions of cells and elaborated on the theory's statements.
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Phenylketonuria, PKU, is a single-gene recessive human
astraxan [27]

Answer:

1/2

Explanation:

Let's assume that the allele "p" is responsible for PKU in the homozygous state. According to the given information, both the parents are unaffected by the disorder but have an affected child. This means that both the parents carry at least one copy of the recessive allele responsible for the disease. Therefore, the genotype of each of the parents is Pp. A cross between Pp and Pp would produce progeny in following ratio=

Pp x Pp = 1/4 PP: 1/2/ Pp: 1/4 pp

Therefore, the probability that their next child will carry just one recessive allele is 1/2.  

3 0
3 years ago
What are the reactants and products of photosynthesis and cellular respiration?
antoniya [11.8K]
Photosynthesis:
   1) Reactants = CO2, Water, Sunlight
   2) Products   = O2, Glucose, 

Cellular Respiration:
   1) Reactants = O2, Glucose
   2) Products   = CO2, Energy (in ATP)

Hope this helps!
6 0
4 years ago
Complementary strand of DNA?<br> DNA Strand 1: AATCGGTAC
lesantik [10]

Answer:

TTAGCCATG

Explanation:

Deoxyribonucleic acid (DNA) is a double helix molecule made up of two complementary polynucleotide strands oriented antiparallel to each other. Each nucleotide in both DNA strands is composed of a five-carbon sugar (deoxyribose), a phosphate group and a nitrogenous base. In DNA, there are four types of nitrogenous bases: Thymine, Guanine, Adenine and Cytosine (in RNA, Uracil replace Thymine). According to the base-pairing rules, Adenine always pairs with Thymine through two hydrogen bonds, whereas Guanine always pairs with Cytosine through three hydrogen bonds.

8 0
3 years ago
(01.03 MC)
forsale [732]

Answer:

B.  0 N

Explanation:

Lemme know if this is right main

5 0
3 years ago
Read 2 more answers
The production of apple on a tree is the result of what energy conversion​
Masteriza [31]

Answer:

The tree absorbs light energy from sunlight, converting the light energy into chemical potential energy stored in chemical bonds. The tree uses this energy to build leaves and branches and fruit. When the apple hits the ground, kinetic energy is transformed into heat energy.

Explanation:

5 0
3 years ago
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