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
Leokris [45]
3 years ago
8

Which of the following is a star in its old age?

Biology
2 answers:
Murljashka [212]3 years ago
7 0
Black hole
..........................
9966 [12]3 years ago
6 0
Black hole I am pretty sure havent had bio in three years
You might be interested in
Which characteristics do all bacteria and archaea have in common?
Alex Ar [27]

Answer:

c

Explanation:

6 0
3 years ago
Read 2 more answers
If the integument of an angiosperm seed contains cells with 20 chromosomes, how many chromosomes would you expect to find in the
OleMash [197]

Answer:

30

Explanation:

The seed of an angiosperm is formed as a result of fertilization (fusion of sperm in pollens and the ova from ovary). According to the question, the cells of the seed which will grow into the plant contains 20 chromosomes. Seeds of angiosperms contain a tissue called ENDOSPERM that forms as a result of the unique DOUBLE FERTILIZATION in angiosperms. It occurs when one haploid sperm cell fuses with two haploid polar nuclei to form a triploid endospermic structure that serves as food for the growing embryo in the seed.

Now based on the above explanation, the diploid plant cell with 20 chromosomes will have 10 chromosomes (half as much) in its gametes as a result of meiosis. This 10 chromosomes in each gamete (sperm and ovum) fuses to form a diploid zygote with 20 chromosomes, while one haploid sperm cell (10 chromosomes) also fuses with two haploid polar nuclei (10 chromosomes each) to form a triploid endosperm with 30 chromosomes i.e. 10+10+10.

8 0
3 years ago
14. Why is <br>aking a geological timeline beneficial when studying the history of the earth?<br>1​
Xelga [282]

Answer:

The geologic time scale is an important tool used to portray the history of the Earth—a standard timeline used to describe the age of rocks and fossils, and the events that formed them. It spans Earth's entire history and is separated into four principle divisions.

Explanation:

4 0
2 years ago
Which of these is responsible for the “rough” appearance of endoplasmic reticulum? DNA Enzymes lysosomes Ribosomes
iris [78.8K]

Answer:

esplanations

Explanation:

4 0
3 years ago
Which population of organisms would begin the flow of energy through a desert food web?
kkurt [141]
<span>since plants are at the bottom of the food web and provide the most energy</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • What amino acid is produced by the following DNA sequence? TGA
    12·1 answer
  • Can someone help me with this?
    7·1 answer
  • How can you use the electron configuration to determine the number of valence electrons
    10·1 answer
  • How the energy is transferred to animals that cannot Barnes energy directly from the sun
    13·1 answer
  • Which theory best explains the present arrangement of continents oceans and landforms on earth
    12·2 answers
  • Please anyone help anyone lord
    10·2 answers
  • What are harmones ? why are they produced​
    12·2 answers
  • In paragraph form (automatic 1-pt deduction if not), explain the evolutionary benefits of sexual reproduction as a means of incr
    13·1 answer
  • What kind of careers are you interested in pursuing or learning more about?​
    7·1 answer
  • What data would meselson and stahl have expected if dna replication was conservative, rather than semiconservative?.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!