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
VARVARA [1.3K]
3 years ago
7

Practice 1

Biology
1 answer:
iren [92.7K]3 years ago
5 0

Answer:

  1. Organ
  2. Organ
  3. S
  4. Cell
  5. Whole organism
  6. S
  7. Organ
  8. Cell
  9. S
  10. Whole organism
  11. Cell

You might be interested in
Which best describes the reactants and products of photosynthesis? Reactants are formed inside the plant, and products are taken
lora16 [44]

Answer:

reactants are taken in from the environment by the plant,and products are formed inside the plant.

Explanation:

5 0
3 years ago
Read 2 more answers
What is the main difference between prokaryotes and eukaryotes?
Alona [7]

Answer:

The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do no

Explanation:

3 0
3 years ago
Which of the following statements concerning correlation analysis is not true
LekaFEV [45]

Of the following statements concerning correlation analysis B is not true

it would be B

8 0
3 years ago
Read 2 more answers
Please help its due in a hour!!!!!
garri49 [273]

Answer:

1. The difference between the normal hemoglobin protein DNA sequence and the sickle cell hemoglobin DNA sequence is a base to base shift, in this case adenine (GAG) to thymine (GTG).

2. The difference affects the amino acid sequence of the protein by replacing glutamic acid (Glu) with valine (Val).

Explanation:

In sickle cell anemia, a change in the DNA nucleotide sequence is observed, where adenine is substituted by thymine, whose expression is the change in the amino acid sequence of globine β, incorporating valine instead of glutamic acid. This represents a molecular mutation - point mutation - by subtitution, which corresponds to missense mutation.

<u>Normal hemoglobin protein in a RBC</u>

DNA                 CTG ACT CCT GAG GAG AAG TCT

Amino acids     Leu  Thr   Pro   Glu   Glu   Lys   Ser

<u>Sickle cell hemoglobin protein in a RBC</u>

DNA                 CTG ACT CCT <em>GTG</em> GAG AAG TCT

Amino acids     Leu  Thr   Pro   <em>Val</em>   Glu   Lys   Ser

When GAG is transcribed to mRNA, the CUC codon is obtained, which codes for glutamic acid. Thymine substitution causes the DNA sequence to change to GTG, which is transcribed as CAC, the codon that encodes the amino acid valine. The <u>change from glutamic acid to valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease</u>.

6 0
3 years ago
According to the theory of endosymbiosis How did cells acquirenhow did cells acquire chloroplast
stira [4]

According to endosymbiotic theory, the chloroplast evolved as a result of engulfment and assimilation of a Cyanobacteria by an eukaryotic cell.

Explanation:

  • Endosymbiotic theory supports the view that ceratain organelles of the eukaryotic cell evolved as a result of engulfment of single celled organism.
  • Evidences  that support this theory is the presence of organellar DNA.
  • It is assumed that Mitochondria evolved as a result of engulfment and assimilation of an aerobic prokaryote while Chloroplast evolved due to engulfment and assimilation of a photosythetic prokaryote by an Eukaryote.
  • After the engulfment ,these organisms however escaped the phagocytosis and began to benefit the eukaryotic Host.
  • Soon it lost many of its Genes to the eukaryotic nucleus and became dependent on the Host.
  • Thus a symbiotic association was established between the prokaryote and the host.Giving rise to cell organelles.
7 0
2 years ago
Other questions:
  • Skeletal muscles are?
    10·2 answers
  • Which process can be primarily affected by galbladder disease?
    8·1 answer
  • How do hair-like structures increase the surface area of the root hair cell?
    15·1 answer
  • Which example describes an abiotic factor interacting with a biotic factor?
    15·1 answer
  • Who was one of the first people to identify and see cork cells?
    7·1 answer
  • What the heck do these terms mean I forgot my txbk but I have the rubric help me now plzzzzzz 50- 98 pts!!!
    12·2 answers
  • Curly hair (C) is dominant over straight hair(c). a heterozygous curly haired woman marries a homozygous straight haired man. wi
    7·2 answers
  • Identify the following statements as True or False.
    11·1 answer
  • If one DNA strand reads CCGTAATGCAT, what will be the sequence of the complimentary strand?
    5·1 answer
  • PLEASE HELP
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!