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
tigry1 [53]
3 years ago
5

Question 1 (1 point) Which of the following is NOT one of the four main elements of an amino acid? Question 1 options: Nitrogen

Calcium Oxygen Hydrogen Carbon Question 2 (1 point) Hemoglobin is a protein that carries oxygen from the lungs to the other parts of the body. Which type of protein is hemoglobin? Question 2 options: Contractile Structural Hormone Transport Question 3 (1 point) What are the building blocks of proteins? Question 3 options: monosaccharides amino acids nucleotides fatty acids
Biology
1 answer:
Irina18 [472]3 years ago
4 0

Answer:

calcium is not a main element of calcium . question 2 hemoglobin is a globular protein with an embedded heme group. so a transportation protein and question 3 the building blocks of proteins are amino acids.

Explanation:

You might be interested in
Which structure has the least effect on the ability of a virus to infect and replicate in a host cell?
AleksAgata [21]
The answer is an envelope.

A virus is an infectious agent that can replicate only inside a host cell. When it is outside the cell, it consists of genetic material coated with protein capsid. Some viruses also have an envelope which covers capsid. The function of the envelope is to identify and bind some receptor sites on the host membranes. After fusing with the cell membrane, it allows to capsid and genetic material to enter the cell and infect it.
6 0
3 years ago
Read 2 more answers
Mendel accounted for the observation that traits that had disappeared in the f1 generation reappeared in the f2 generation by pr
marysya [2.9K]

Answer:

Option C,  traits can be dominant or recessive, and the recessive traits were obscured by the dominant ones in the F1.

Explanation:

Complete question-

Mendel accounted for the observation that traits which had disappeared in the F1 generation reappeared in the F2 generation by proposing that

Select one:

a. new mutations were frequently generated in the F2 progeny, "reinventing" traits that had been lost in the F1.

b. the mechanism controlling the appearance of traits was different between the F1 and the F2 plants.

c. traits can be dominant or recessive, and the recessive traits were obscured by the dominant ones in the F1.

d. the traits were lost in the F1 due to dominance of the parental traits.

e. members of the F1 generation had only one allele for each trait, but members of the F2 had two alleles for each trait.

Solution -

In the Mendel’s experiment, some traits which were absent in the F1 generation appeared in the second generation cross. By this he concluded, that the traits exressed in the F1 generation were dominant and hence they capped the expression of traits associated witl recessive allele. He classified the traits in F2 generation as recessive, because these traits can occur only when they are in pair i.e they form individuals with homozygous recessive genotype.  

For instance – If “R” is allele for dominant red color trait and “r” is the allele for recessive white color trait, then the cross between true breeding red flowers and white flowers will produce following offspring  

RR * rr

Rr, Rr, Rr, Rr

Thus, in F1 generation all the offspring are heterozygous red

F2 generation-  

Rr * Rr

RR, Rr, Rr, rr

The recessive trait of white colored flower reappears in second generation.

Hence, option C is correct

8 0
3 years ago
List three facts you discovered about ecosystem
Colt1911 [192]

Answer:

Google is great sometimes

Explanation:

Type your question in google

8 0
3 years ago
Read 2 more answers
With a medicine dropper, add a drop of pond water to the center of a clean glass slide?
Kisachek [45]

Pond water contains a variety of plant and animal life. While some are visible to the plain eye, others require a microscope to observe them. For example, there's bacteria, protozoa, hydras, algae, and arthropods. You will have the opportunity to see a number of microorganisms from both the plant and animal kingdom.

7 0
3 years ago
WHOEVER ANSWERS THIS GETS 10 POINTS
otez555 [7]

Answer:

A:  Oxygen is a process by which respiration happens.

Explanation:

Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

Also:Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

~Hope this helps

7 0
2 years ago
Read 2 more answers
Other questions:
  • Food, then
    7·2 answers
  • What is the third heaviest land mammal on earth??
    9·1 answer
  • What happens when you move the microscope stage in different directions?
    5·2 answers
  • Which of the following is a testable hypothesis
    11·1 answer
  • A woman is heterozygous for blue eyes. If she were to have child with a man who is homozygous recessive for brown eyes, what is
    5·1 answer
  • Polysaccharides always:
    8·2 answers
  • I NEED HELP ANSWER FAST
    13·1 answer
  • Which of the following processes converts glucose molecules to carbon dioxide molecules?
    12·1 answer
  • Identify organelles in a plant cell with the diagram below.
    14·2 answers
  • What does Hyperbole mean
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!