Most plants have roots, but there are some
exceptions. The exceptions are bryophytes
and the groups of green algae that are
classified as plants. Bryophytes have rootlike
structures called rhizoids for absorbing
water, but because rhizoids lack vascular
tissue they are not considered roots.
Answer:
True.
Explanation:
Vitamin D is a fat soluble vitamin that is responsible for fostering the absorption of calcium, magnesium and phosphate in the body.
The synthesis of calciferol is dependent on the availability of a related steroid called cholecalciferol (vitamin D3), which may be synthesized in the skin or absorbed from the diet because keratinocytes of the epidermis and fibroblasts of the skin is response for producing vitamin D3(calciferol) by absorbing it from ultraviolet light when during exposure to UV B photons which protolyses provitamin D3 to pre vitamin D3 in the human body.
It can also be gotten from food sources like milk, cheese, cereals, liver,meat e.t.c.
Explanation:
A gene-edited pig's heart has been transplanted into a human for the first time. The procedure is a one-off, and highly experimental, but the technique could help reduce transplant waiting lists in the future
Answer:
<u><em>The statement made by Dominique is correct.</em></u>
Explanation:
When an antibiotic is given to a bacterial population, there will be some bacteria which will be resistant to the antibiotic and there will be others which will not be resistant to the antibiotic.
<em>Those which are not resistant will die.</em>
<em>On the other hand, the resistant bacteria will be able to divide rapidly and pass on their characteristics to the offspring.</em>
This is a type of natural selection in which organisms which are better able to survive in the environment can reproduce and pass their characteristics to their children.
The claim made by Bernadette is not correct because individual organisms cannot adapt to such changes. A change will occur in the population.
The secondary structure is responsible for the shape that the nucleic acid assumes. The bases in the DNA are classified as purines and pyrimidines. ... A purine base always pairs with a pyrimidine base (guanine (G) pairs with cytosine (C) and adenine (A) pairs with thymine (T) or uracil (U)).
