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SCORPION-xisa [38]
3 years ago
5

Which of the following is a characteristic of the plasma membrane?

Biology
1 answer:
Zina [86]3 years ago
3 0

Answer:

D. It allows some molecules to pass through but prevents others from doing so.

Explanation:

Plasma membrane or cell membrane is a selective permeable membrane which allows light molecules to pass and prevents heavy molecules.

Hope this helps ;)❤❤❤

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Is it possible to have a knockout mutant plant that shows no visible phenotype that is different from the wild-type plant?
joja [24]

Answer:

Molecular genetic approaches to the study of plant metabolism can be traced back to the isolation of the first cDNA encoding a plant enzyme (Bedbrook et al., 1980), the use of the Agrobacterium Ti plasmid to introduce foreign DNA into plant cells (Hernalsteens et al., 1980) and the establishment of routine plant transformation systems (Bevan, 1984; Horsch et al., 1985). It became possible to express foreign genes in plants and potentially to overexpress plant genes using cDNAs linked to strong promoters, with the aim of modifying metabolism. However, the discovery of the antisense phenomenon of plant gene silencing (van der Krol et al., 1988; Smith et al., 1988), and subsequently co‐suppression (Napoli et al., 1990; van der Krol et al., 1990), provided the most powerful and widely‐used methods for investigating the roles of specific enzymes in metabolism and plant growth. The antisense or co‐supression of gene expression, collectively known as post‐transcriptional gene silencing (PTGS), has been particularly versatile and powerful in studies of plant metabolism. With such molecular tools in place, plant metabolism became accessible to investigation and manipulation through genetic modification and dramatic progress was made in subsequent years (Stitt and Sonnewald, 1995; Herbers and Sonnewald, 1996), particularly in studies of solanaceous species (Frommer and Sonnewald, 1995).

5 0
2 years ago
One day while hiking, Maria found a rock in the wall of a canyon. In the rock, she noticed an impression of a leaf. Which answer
ch4aika [34]

Answer:

B. Fossil

Explanation:

According to National Geographic, "Fossils are the preserved remains, or traces of remains, of ancient organisms." When you find the impression of a leaf, the leaf imprint is the preserved remains of the leaf.

5 0
3 years ago
Read 2 more answers
In humans (and other animals) where does glucose come from?
Maru [420]

Answer:

Glucose is a carbohydrate, and is the most important simple sugar in human metabolism. ... Glucose is one of the primary molecules which serve as energy sources for plants and animals. It is found in the sap of plants, and is found in the human bloodstream where it is referred to as "blood sugar"

Explanation:

5 0
2 years ago
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The adaptive advantage of a fungus producing and secreting a bacterial inhibitor would be that it protects against microbial com
Advocard [28]

The adaptive advantage of a fungus producing and secreting a bacterial inhibitor would be that it protects against microbial competitors: is an extensive surface area well suited for invasive growth and absorptive nutrition.

Fungus

A fungus is any eukaryotic organism that includes microbes like yeasts and moulds, as well as the more recognisable mushrooms. These organisms are classed as a kingdom distinct from the other eukaryotic kingdoms, which include Plantae, Animalia, Protozoa, and Chromista in one traditional taxonomy.

The presence of chitin in fungi's cell walls distinguishes them from plants, bacteria, and some protists. Fungi, like animals, are heterotrophs; they obtain nourishment by absorbing dissolved molecules, usually by secreting digestive enzymes into their surroundings.

Fungi, like plants, use chemical defence, which involves the creation of poisons that affect the growth, development, or viability of the antagonists.

To learn more about fungus

brainly.com/question/10878050

#SPJ1

5 0
1 year ago
A dental mouth mirror is an example of a ____________ patient-care item
Lyrx [107]
<span>A dental mouth mirror is an example of a semi-critical patient-care item.

In dentistry, a dental mouth mirror is an important tool. Dentists used this tool to see the locations in the oral cavity.

The instruments which do not penetrate soft tissues or bones but only contact with non-intact skin are Semi-critical instruments. whenever you use these type of instruments, you should sterilize them after each use.
</span><span>
</span>
7 0
3 years ago
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