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
Jet001 [13]
3 years ago
7

Nitrogen bases have two rings structure are called

Biology
1 answer:
djverab [1.8K]3 years ago
4 0
Purines: adenine and guanine
You might be interested in
PLS HELP! i will give brainliest
forsale [732]
The first one! A!

Have a good day!
8 0
3 years ago
Read 2 more answers
In pea plants the allele for round seeds (R) are dominant to the allele for wrinkled seeds (r). The allele for yellow seeds (Y)
SashulF [63]

Answer:

The correct answer is -  A. RY, rY, Ry, ry

Explanation:

Gametes are the sex cells or reproductive cells that are haploid in number. Gametes carry only one allele of each gene or chromosome in any organism. The male gamete called an egg or ovum whereas the male gamete called sperm or pollen.

In this case, the heterozygous plant has the genotype RrYy. In each of the gametes, there would one allele of each gene. The gametes get a dominant R and a dominant Y allele and a recessive r and a recessive y allele. Each produces 25% each of RY, Ry, rY, and ry.

7 0
3 years ago
Which organelle in the plant cell shown above makes glucose from sunlight?
Anni [7]
Chloroplasts<span> are organelles used by plant cells to make a sugar called glucose from sunlight. Energy stored in the chemical bonds of the sugar molecules can be used, either by the plants or by the animals that eat them, to fuel body processes.</span>
4 0
3 years ago
How are humpback whales related to blue whales and minke whales
asambeis [7]

Minke whales (pronounced mink-ey), are one of the smallest baleen whales in North American waters and are the smallest of the “rorqual” whales. The rorqual whales or “great whale” family include blue whale, fin whale, Bryde's whale, sei whale, and humpback whale.

Humpback whales can be distinguished by their small dorsal fin and long pectoral flippers, and they show their tail flukes more often. Blue whales are the biggest. They are actually grey, but appear aqua under water.

Explanation:

5 0
3 years ago
What type of membrane lines the compartments of the ventral body cavity and produces a lubricant that allows organs to move agai
JulijaS [17]

Answer:

Answer is Serous membrane.

Explanation:

The serous membrane is known to be or can be described as a thin membrane usually consisting of two layers which are separated by a space filled with serous fluid, which is derived from the serum.

The serous membrane are lying the cavity of some certain internal organs of the body, such as the lung and the heart. The fluid produced by the serous membrane,[ serous fluid], serves as lubricant to reduce friction occurring from muscle movement.

Examples of serous membrane are peritoneum and pericardium.

7 0
3 years ago
Other questions:
  • European rabbits were introduced into australia and quickly spread, reproduced, and became a terrible pest. they eat up to $600
    5·1 answer
  • How do the tectonic plate interactions build mountains and cause volcanic eruptions?
    13·1 answer
  • What is convection?​
    11·1 answer
  • Define trawling, and explain the ecological damage associated with it.
    15·2 answers
  • What is the advantage of genetic recombination as a mode of reproduction in bacteria
    14·2 answers
  • Omar paddles a canoe downstream at a rate of 5 mi/hr. The stream is flowing at a rate of 12 mi/hr. What is the actual
    12·2 answers
  • What happens when water warms up?
    11·1 answer
  • Explain how ferns and fungi are different.
    14·2 answers
  • 1. : Help prevent molecules from passing through the extracellular space between adjacent cells.
    10·1 answer
  • Which of the following enzymes catalyzes the production of a strand of rna from dna? 1) RNA polymerase 2) RNA ligase 3) a ribozy
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!