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
oee [108]
3 years ago
14

Please help!! I need an answer to this question from a test

Biology
1 answer:
lana66690 [7]3 years ago
6 0

Answer:

I think it b because cells carry oxygen

You might be interested in
6. Patients with HIV/AIDS develop secondary infections and cancers due to their condition, which
Gnoma [55]
HIV/AIDS affect B. Immune cells because it weakens your immune system causing you to be vulnerable to various other diseases
6 0
3 years ago
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The al
Lerok [7]

Answer:

The parent's genotypes are:

Ddpp - tall, white parent

ddPp - dwarf, purple parent.

Explanation:

This question involves two different genes coding for height and flower color in pea plants. The alleles for tallness (D) and purple color (P) are dominant over the alleles for dwarfness (d) and white color (p) respectively.

According to this question, a tall plant with white flowers is crossed with a dwarf plant with purple flowers to produce the following proportion of offsprings: 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white.

Since some of the offsprings contain recessive alleles for both or either genes, the dominant traits of the parent is controlled by an heterozygous genotype. This means that the tall plant with white flowers has a genotype: Ddpp while the dwarf plant with purple flowers has the genotype: ddPp. In a cross between Ddpp × ddPp, 1/4 of each combination of alleles is produced in the offsprings (see punnet square in the attachment).

3 0
3 years ago
Why do plants and other photosynthetic organisms need CO2 from the atmosphere?
makkiz [27]
Http://www.biocab.org/Carbon_Dioxide_CO2.html
7 0
2 years ago
A controlled experiment___. A. Includes one group for which the scientist controls all variables. B. Includes at least two group
notsponge [240]

Answer:

The correct answer is:

Includes at least two groups, one of which does not receive the experimental treatment. (B)

Explanation:

A controlled experiment is made up of at least two groups of participants (subjects). One group (the test group) receives the experimental treatment, which can be an intervention or a new drug to be tested etc, and the effect of the treatment on the subjects is measured, while the second group of similar subjects also known as the control group acts as a baseline and do not receive the treatment or intervention. They act as a baseline to ensure that the change observed in the treatment group was brought about as a result of the treatment.

<em>Note that repeating the experiment several times does not ensure accuracy of the result, rather it ensures reliability of the results hence option D is not correct</em>

5 0
2 years ago
The uniformity in the exact cells undergoing apoptosis makes C. elegans an excellent model organism for uncovering genes involve
Nataly [62]

Answer:

Over all growth and development cycle

Explanation:

<em>C. elegans,</em> due to its manageability, nervous system, muscle, skin gut and reproductive cycle makes it an ideal model. These nematodes are similar to human systems and lot of the research found can be applied to humans and medicine.

Apoptosis is the programmed cell death and this can be for many reasons such as repair, replace or removal of old or damaged cells. This groundbreaking research has captured the attention of scientist over the decades and many new findings are continuing to evolve.

Some phenotypes that are important in studying apoptosis are: Stress response, growth and development, tumor formation/regeneration and wound healing.

4 0
3 years ago
Other questions:
  • Temperature and _______ are both determining factors for a substance's phase of matter.
    11·1 answer
  • Which of the following conditions creates the largest waves?
    6·1 answer
  • What is an example of a homoglycan? What is an example of a heteroglycan?
    9·1 answer
  • Why do scientific follow a set order of the steps when carrying out a scientific investigation
    15·2 answers
  • A person is found dead by a neighbor.What career is involved in notifying the police and calling an ambulance
    5·1 answer
  • Explain three ways in which the human<br>sperm cell is adapted to its function.​
    11·1 answer
  • What two factors affected the development of new species
    11·1 answer
  • In Stage 1 of his lab, Gunther adds 20 mg of solute into a solution. He stirs it and it completely dissolves. In Stage 2, he add
    12·2 answers
  • Scientist: A greenhouse gas, for example, carbon dioxide, forms a transparent layer that traps solar heat beneath it in the eart
    13·1 answer
  • HELLP ASAP
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!