1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stels [109]
3 years ago
15

UL

Biology
1 answer:
iren [92.7K]3 years ago
6 0

Answer:

<em>The correct option is A) The cell theory is the result of explanations of scientists' observations and not a  description of the cell structure as it relates to the function.</em>

Explanation:

The cell theory can never become a law because Scientific theories are well-tested explanations, while laws are well-tested descriptions of  natural phenomena; one cannot become the other.

A scientific theory is subjected to be changed overtime but a law cannot change. We have observed many changes in the cell theory in the past and we might find changes in this theory in the future also. Hence, the cell theory can never become a law.

You might be interested in
Portion of an enzyme to which a substrate can attach
netineya [11]

Answer:

An active site

Explanation:

  • Enzymes are biological catalysts that catalyze chemical reactions or biochemical reactions. They are substrate specific and each enzyme acts on a certain specific substrate.
  • <em><u>Enzymes contain a pocket-like structure called the </u></em><em><u>active site</u></em><em><u> where the substrate binds according to the induced-fit model.</u></em>
  • Upon binding of the substrate to the active site catalysis takes place and the substrate is converted to product. Enzymes remain unchanged after the reaction.
7 0
3 years ago
In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is produced when at least one dominant
slega [8]

Answer:

1:1:1:1 walnut comb

Explanation:

If a cross is made between a female who is RRpp (rose comb) and a male who is rrPP (pea comb)  then:

P: RRpp  x  rrPP

F1: RrPp RrPp RrPp RrPp

This means that all of the offspring in F1 generation will have heterozygous genotype (at both loci). Since it contains both dominant alleles, the phenotype is walnut comb.

4 0
2 years ago
What is needed in order to give the DNA polymerase a place to start copying DNA? How long is it? What puts it on?
zzz [600]

DNA polymerases add nucleotides to the 3′ end of a polynucleotide chain. ... To initiate this reaction, DNA polymerases require a primer with a free 3′-hydroxyl group already base-paired to the template. They cannot start from scratch by adding nucleotides to a free single-stranded DNA template.

How is DNA replicated? Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.

3 0
2 years ago
Which is more complex prokaryotes or eukaryotes cells
nekit [7.7K]

Answer:

Eukaryotes

Explanation:

Eukaryotic cells have membrane bound organelles.

Prokaryotic cells do NOT have membrane bound organelles.

So, a Eukaryotic cell has structures such as a nucleus, mitochondria, a golgi complex, etc.  This provides the cells with distinct stuctures that have distinct functions.

consider the expression of a protein (protein synthesis.)  Transcription of the DNA into RNA happens within the nucleus.  The mRNA is sent from the nucleus to the cyctoplasm, where translation occurs at either the rough endoplasmic reticulum or the free floating ribosomes.

A prokaryotic cell has all of its machinery floating around inside its cytoplasm with no separation.    In these cells, transcription and translation both occur in the cytoplasm.  In fact, translation often begins before transcription is finished...

8 0
3 years ago
Are all organs weighed on a triple beam balance ?
Elanso [62]

No,not all organs are weighed on a triple beam balance.

<u>Explanation:</u>

  • Usually smaller sized organs like adrenals, thyroid are commonly used to be weighed on triple beam balance, whereas larger organs like lungs, liver and heart can only be weighed on grocer's scale.
  • Only weight of the smaller body organs can be measured very precisely with the help of triple beam balance, where as if we measure the weight of the larger organs using the same triple beam balance,then the resultant value thus obtained will not be accurate enough.
  • Hence organs are weighed on a triple beam balance.
3 0
3 years ago
Other questions:
  • What part of the body reproduces, grows, repairs itself, uses oxygen and nutrients, digests food, eliminates waste, produces hea
    12·1 answer
  • Gina's father has diabetes and takes insulin. He recently had a liver transplant, after which he was put on anti-rejection medic
    12·1 answer
  • If a patient had 12% of their body covered with a psoriasis rash what would be the severity
    15·1 answer
  • The first visible signs of senescence are usually observed in a person's ___
    12·2 answers
  • Which of these compounds are not a source of nitrogen for plants?
    10·2 answers
  • Can you have more than one producer in a food chain??
    6·1 answer
  • 20. Does facilitated diffusion require energy for the cell?
    10·1 answer
  • Pead this passage
    6·2 answers
  • If an organism has 40 chromosomes in its gametes, how many chromosomes are in it somatic cells
    7·1 answer
  • Which of the following is not a phenotype?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!