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
alexandr402 [8]
2 years ago
15

MULTIPLE CHOICE

Biology
2 answers:
ipn [44]2 years ago
7 0

Answer:

a. and d. is the answer

Explanation:

valentina_108 [34]2 years ago
5 0

Answer:

A

Explanation:

nitrogen bases are a part of DNA, Dna is copied into genes, chromosomes are made of genes, cells are the largest unit out of all of these.

<em>plz mark me brainliest.</em> ;)

You might be interested in
Which statement best describes the life cycle of plants such as ferns? Plants have a two-part life cycle, spending part of their
Gemiola [76]

The correct answer is that ferns have two part in their life cycle: Diploid phase and haploid phase

The life cycle of a fern has two parts: sporophyte stage and gametophyte stage. The gametophyte stage of ferns are haploid which releases gametes and the sporophyte stage are diploid that produces spores. This kind of life cycle is known as the "alternation of generation".




4 0
3 years ago
Read 2 more answers
A forest has two groups of plants that appear to be very similar both phenotypically and genotypically. The major difference is
Gennadij [26K]
The basics would be that you'd need to find out if they could exchange genetic information. If not, they couldn't be considered part of one species. Set-up 2 artificial environments so both groups would produce pollen at the same time. Fertilise both plants with the other's pollen. Then fertilise the plants with pollen from their own group. 
Count the number of offspring each plant produces. 
If the plants which were fertilised by the opposite group produce offspring, they are of the same species. You can then take this further if they are of the same species by analysing if there is any difference between the number (and health) of offspring produced by the crossed progeny and by the pure progeny. You'd have to take into account that some of them would want to grow at different times, so a study of the progeny from their first sprout until death (whilst emulating the seasons in your ideal controlled environment). Their success could then be compared to that of the pure-bred individuals. 
Make sure to repeat this a few times, or have a number of plants to make sure your results are accurate. 
Or if you couldn't do the controlled environment thing, just keep some pollen one year and use it to fertilise the other group. 
I'd also put a hypothesis in there somewhere too. 
The independent variable would be the number of plants pollinated. The dependant variable would be the number of progeny (offspring) produced. 
5 0
3 years ago
Which factor below would be least likely to cause a mutation in the cells of an organism.
USPshnik [31]
A) A sound wave

The other 3 create mutations, are cells are hit by sound waves all the time and experience no mutations because of it



3 0
3 years ago
About 90% of the information you need to drive safely comes from your
Mekhanik [1.2K]
<span>About 90% of the information you need to drive safely comes from your Eyes. </span>
6 0
3 years ago
Read 2 more answers
What does the Calvin cycle do
Ostrovityanka [42]
The Calvin Cycle<span>. Plants use energy from the sun in tiny energy factories called chloroplasts. Using chlorophyll in the process of photosynthesis, they convert the sun's energy into storable form in ordered sugar molecules such as glucose.</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • A group of cells with the same structure and function are known as a(n) __________. a
    13·1 answer
  • If an organism reproduces very freely by asexual means, is there any advantage to its also reproducing sexually?
    5·1 answer
  • What is NOT a major use of sardines once they are caught<br> commercially?
    14·2 answers
  • Which statement is true of cancer? A) cancer results when cells stop dividing. B) mutations in certain genes caue tumors. C) tum
    11·2 answers
  • FIRST ONE WHO ANSWERS THIS QUESTION CORRECTLY WILL BE MARKED BRAINLIEST!
    7·1 answer
  • Of all the ways that Renaissance society was hierarchically divided, what was regarded as the most "natural" distinction and the
    9·1 answer
  • Earth makes one revolution every _____. A. 12 hours B. 24 hours C. 6 months D. 365 days
    5·1 answer
  • Which process involves TWO DNA divisions?<br> A. Mitosis<br><br> B. Meiosis
    11·2 answers
  • If the parent cell has 40 genes how many will each daughter cell have ?
    7·1 answer
  • Under normal circumstances, carbon dioxide is excreted from the body by what structure?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!