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baherus [9]
3 years ago
6

What organism produces about half of the oxygen on earth?

Biology
1 answer:
Triss [41]3 years ago
3 0

Answer:

deez  broooooooooo

Explanation:

but its actualyyy dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

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Which of the following activities uses the least water in a typical household?
Nastasia [14]

Answer:

The answer would be C.) Brushing one's teeth

Explanation:

When you shower, take a bath and wash dishes, you normally use a few gallons, but when you brush your teeth, it should only waste a few ounces to about a pint.

7 0
2 years ago
Read 2 more answers
What term is used to describe bacterial cells that can naturally take up dna from their environment?
Maru [420]
<h2>The correct answer is: Competent cells</h2>

Explanation:

  • Bacterial cells have the capability of incorporating foreign naked DNA or deoxyribonucleic acid fragments from the environment or the exterior of the cell to the interior of the cell. This process is known as Transformation.
  • The bacterial cells which are able to undergo transformation are called Competent bacterial cells.
  • Some of the bacterial cells are naturally competent like<em> Bacillus subtilis, Streptocossus pneumoniae</em> while others  like <em>Escherishia coli </em>need to be chemically treated to make them artificially competent.
  • In natural competence, the foreign DNA from the cell exterior is incorporated into the cell interior through specific protein complexes present in the plasma membrane of the bacterial cells.
  • In artificial competence, the negative charge on foreign DNA is masked by positively charged calcium ions (so that it is not repelled by the negative charge of the lipid bilayer of the bacterial cell plasma membrane) and then small pores are created in the lipid bilayer of the plasma membrane of the bacterial cells by giving a heat shock to the cells. This results in the uptake of the DNA by the bacterial cells.
3 0
3 years ago
Which of the following statements is FALSE?
Delvig [45]

Answer:

c. Damage to the primary (somatic) motor cortex results in the loss of both voluntary muscle control and all reflexive contractions.

Explanation:

The primary motor cortex is an area in the brain that is responsible for the control and regulation of activities that involves movement of the body as well as the postures they body takes which we also refer to as motor skills.

The primary motor cortex sends signals in the form of nerve impulses to the brain and this in turn helps in the maintenance of the motor skills that is carried out by the body.

Not only does the damage to the primary (somatic) motor cortex results in the loss of both voluntary muscle control and all reflexive contractions, it also causes other losses such as constant contraction of the muscles also know as spasticity, involuntary muscle contraction also referred to as clonus.

5 0
3 years ago
Two diseases resulting from hyperfunction of the pituitary gland are:
Snezhnost [94]
Gigantism and acromegaly are the two diseases resulting from hyper function of the pituitary gland. Gigantism and acromegaly are conditions that are nearly always due to a pituitary adenoma that is because of excessive secretion of a growth hormone called hypersomatotropism. <span>If GH hypersecretion begins in childhood, before closure of the epiphyses pituitary gigantism occurs. It is a rare condition where skeletal growth velocity and ultimate stature are increased, but little bony deformity occurs. However, soft-tissue swelling occurs, and the peripheral nerves are enlarged. Hypogonadotropic hypogonadism and deferred puberty is also normally present, resulting in a eunuchoid habitus. While Acromegaly occurs after the growth plate cartilage fuses in adulthood, it is the same disorder of IGF-I excess but in acromegaly, an unadorned disease that morbidity and mortality rates are high because its often diagnosed late, where the disease is associated with cardiovascular, cerebrovascular, and respiratory disorders and malignancies. </span>



7 0
3 years ago
Which of the following is not a similarity between green algae and plants
Dafna11 [192]
Do you have options to pick from
4 0
3 years ago
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