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mel-nik [20]
3 years ago
8

Antibiotics such as penicillin and streptomycin have been used to treat diseases such as Lyme disease and tuberculosis. Which ty

pes of disease-causing organisms can be killed or reduced in number by antibiotics?
A. Both bacteria and viruses respond to antibiotic treatment.


B. Only bacteria respond to antibiotics, and viruses are not affected.


C. Only viruses respond to antibiotics, and bacteria are not affected.


D. Neither bacteria nor viruses are affected by the use of antibiotics.
Biology
1 answer:
jok3333 [9.3K]3 years ago
6 0
A. Both bacteria and viruses respond to antibiotic treatment
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Assuming dragon genetics follows the same rules as fruit flies, what ratio of genotypes would you expect if the genes were not l
andrew11 [14]

Assuming dragon genetics follow the same rules as fruit flies, we would get the same possible genotype for all 16 offspring provided that the genes are not linked.

Considering dragon genetics, flame eyes (F) are dominant to blue eyes (f) and burbling (B) is dominant to whistling (b).

Now, a dihybrid cross between two homozygous blue-eyed, whistling dragons will yield 16 offspring all with the same possible genotype .i.e. homozygous blue-eyed, whistling type.

Morgan through experiments on fruit flies observed that when the two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combination were much higher than the non-parental type.

He attributed this due to the physical association or linkage of the two genes and coined the term 'linkage' to describe the physical association of genes on a chromosome. The term 'recombination' is to describe the generation of non-parental gene combination.

To learn more about dihybrid cross here

brainly.com/question/1185199

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4 0
2 years ago
Which is part of meiosis but not of mitosis
lbvjy [14]
The CORRECT answer for this is: number reduction of chromosomes:)
4 0
3 years ago
How to explain the three main parts of plants and animals
USPshnik [31]

Plants are on of the five kingdoms into which all living things are divided by scientists, the other four being animals, fungi, protists, and monerans.

A typical plant is made up of  four main parts. These are (1) roots, (2) stems, (3) leaves, and (4) flowers.  The roots, stems, and leaves are called the vegetative parts of a plant.  The flowers, which includes fruit, and seeds are known as the reproductive parts.

Most roots grow underground, and absorb from the soil absorb the water and minerals that the plant needs to grow. The roots of some plants float freely in water or attach themselves to tree branches.

Roots also anchor the plant in the soil.  The roots of some plants such as beets, carrots, radishes and sweet potatoes also store food for the rest of the plant to use.

Stems include the trunk, branches, and twigs and make up the largest parts of some kinds of plants, particularly the common trees.  Other plants, such as cabbage and lettuce, have such short stems that they appear to have no stems at all.  The stems of some other plants like potatoes, grow partly underground.

Most stems grow upright and support the leaves and reproductive organs of plants, holding these parts up in position where they can receive sunlight.

Leaves differ greatly in size and shape.  The largest leaves are those of the raffia palm, which grow up to 20 metres long and 2.5 metres wide.  Most plants have broad, flat leaves with smooth edges. Edges of leaves of some plants are toothed or wavy.   A few kinds of leaves, such as  those of pine trees and cactuses, are rounded and have sharp ends.

Leaves make food needed by plants the food by a process called photosynthesis.  In this process, chlorophyll in the leaves absorbs light energy from the sun, which is used  to combine water and minerals from the soil with carbon dioxide from the air. A network of veins carry water with minerals to the food-producing areas of a leaf.  The veins also help support the leaf and hold its surface up to the sun.

Flowers form the reproductive parts of flowering plants. Most flowers have four main parts - calyx, corolla, stamens, and  pistils.  The flower parts are attached to a place on the stem called the receptacle.

The calyx consists of small, usually green leaf like structures called sepals.  All the petals of a flower make up the corolla. The stamens and the pistils are attached to the receptacle inside the sepals and the petals.  Each stamen has an enlarged part called an anther that grows on the end of a long, narrow stalk called the filament.  Pollen grains are produced in the anther.  The pistils of most flowers have three main parts: (1) a flattened structure called the stigma at the top, (2) a slender tube called the style in the middle, and (3) a round base called the ovary.  The ovary contains one or more structures called ovules.  Egg cells form within the ovules.  The ovules become seeds when sperm cells fertilize the egg cells to begin the formation of seeds and fruit.

8 0
3 years ago
Anhidrosis is the inability to sweat normally. If the human body cannot sweat properly, it cannot cool itself, which is potentia
KiRa [710]

a feedback mechanism that maintains homeostasis

Explanation:

Anhidorosis mostly directly interferes with a feedback mechanism that interferes directly with a feedback mechanism that maintains homeostasis.

Since anhidorosis is the inability to properly or normally sweat, it affects the process of homeostasis.

Homeostasis is an important characteristics of life.

It is the ability of organisms to maintain and sustain a balance environment within and outside of them.

Sweating is one such process by which the body carries out homeostasis. On a hot day, the body produces sweat which evaporates and release latent heat to cool the body. This inability affects the intricate balance between the environment and the body.

learn more;

Homeostasis brainly.com/question/1601808

#learnwithBrainly

5 0
3 years ago
In what way do two alleles for the same trait differ?
kvasek [131]
I think it’s C explanation : i learned this a while ago
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