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
Nikolay [14]
3 years ago
13

Of the following identify the system you would find in a human but not in a flatworm A: A respiratory system B: A digestive syst

em C: A nervous system
Biology
2 answers:
SVEN [57.7K]3 years ago
6 0
B. a digestive system
Zarrin [17]3 years ago
4 0
B: a digestive system
You might be interested in
Paper chromatography is a technique used to separate molecules based upon their size and solubility in a particular solvent. If
Tanya [424]

Answer:

a. Paper chromatography would separate the pigments into several bands that appear green or yellow/orange.

Explanation:

The primary or main pigment in plants is the chlorophyll. The chlorophyll gives plants their characteristics green colour and helps in the absorption of light during photosynthesis.

Other pigments in plants include carotenoid with its characteristic yellow, red or orange colour; anthocyanin with its re/blue colour and betalains with its red/yellow colour.

<em>Hence, if pigments from a particular species of plant are extracted and subjected to paper chromatography, one would expect the pigments to be separated into several colour bands ranging from green to yellow/orange.</em>

The correct option is a.

4 0
3 years ago
Mutations are important to the evolution of a species because
patriot [66]

Answer:

Mutations are important to the evolution of a species because is creates new DNA for a certain gene, creating a new allele.

(Answer taken from https://www.apsnet.org/edcenter/disimpactmngmnt/topc/PopGenetics/Pages/Mutation.aspx#targetText=Mutation%20plays%20an%20important%20role,gene%2C%20creating%20a%20new%20allele.)

Hope this helps :)

3 0
3 years ago
Organism x has an enzyme optimum temperature of 37°C. Organism y has an enzyme optimum temperature of 41°C.
Tema [17]
The answer is D since organism x has a n optimal temperature of 37 degrees Celsius and when organisms y enzyme gets incorporated with enzyme x it will increase enzyme’s x temperature therefore enzyme x will denature meaning it will unfold and it will loose its properties hence loosing its activity because its temperature has been altered.
3 0
3 years ago
In corn, the allele A allows the deposition of anthocyanin (blue) pigment in the kernels (seeds), while aa plants have yellow ke
lara31 [8.8K]

Answer:

<h2>A) Yes, 12 mu</h2><h2>B) AaWw</h2><h2>C) 0.25%</h2><h2 />

Explanation:

As given,

Allele A for  blue anthocynin.

aa for yellow kernel;

at  second locus;

W produce smooth kernel,

ww for wrinkled kernel;

Parents as given are:  AaWw and aaww

Progeny are:

blue smooth ( AaWw)= 1447;

blue wrinkle (Aaww)= 169;

yellow smooth (aaWw)= 186;

yellow wirnked (aaww)= 1510

a)

Recombinant progeny are  169+ 186= 355

non- recombinant progeny are = 1447+ 1510= 2957

so recombination frequency (RF)= 346/2957×100= 12.0054%

So a and w are linked genes.

They are 12 mu far away from each other.

b) Blue smooth parent= AaWw.

c) Aaww crossed with  aaWw

progeny are= AaWw, Aaww, aaWw, aaww,

They all are produced in same proportion =0.25% or 1/4.

5 0
3 years ago
A random sample is one way to reduce bias when choosing people for an experiment
Verdich [7]

Your answer is

One of the most effective methods that can be used by researchers to avoid sampling bias is simple random sampling, in which samples are chosen strictly by chance. This provides equal odds for every member of the population to be chosen as a participant in the study at hand.

7 0
3 years ago
Read 2 more answers
Other questions:
  • "What is the relationship between reliability and validity? Is it possible for a measure to be reliable and invalid? Conversely,
    8·1 answer
  • You are interested in studying a gene called CFTR because mutations in this gene in humans cause cystic fibrosis. You have made
    13·1 answer
  • A testable hypothesis could be formed from which question?
    16·2 answers
  • Describe in detail the primary and secondary growth of the tissues of roots
    11·1 answer
  • Electromagnetic waves used in ovens and cell phone are called
    11·1 answer
  • Language serves ___________ functions when it helps you define yourself and your membership in larger groups.
    5·1 answer
  • The north pole and the magnetic pole are what? a-located at the same point b-located near each other c-two different names for t
    8·1 answer
  • Transparent or translucent materials are to used to make?
    5·1 answer
  • Help asap i’ll be giving a brainliest to the person with the correct answer
    8·1 answer
  • Each of the following traits is found in a bipedal hominin EXCEPT: Group of answer choices A c-shaped spine. A bowl shaped pelvi
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!