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3 years ago

I need ans of Q2 and 3 really really quick

Biology

1 answer:

miskamm [114]3 years ago

5 0

Explanation:

diffusion is movement of molecules from a region of higher concentration to a region of lower concentration

2a)molecules will be moving out of the cell

b)molecules will be moving into the cell

3i)molecules will be moving into the cell

ii)molecules will be moving out of the cell

iii)there is no movement since concentration is equal inside and outside the cell

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The maternal effect Drosophila mutation bicoid (bcd

fredd [130]

Answer:

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3 years ago

In your opinion, how do you think Lamarck's ideas were taken? justifies

PolarNik [594]

Answer:

they considered valid but a certain idea of acquired characteristics being inherited was rejected

Explanation:

his theory was that if the environment demanded a need or use of a structure in an organism it developed it in response to demand leading to natural use or disuse of structures which he said that these new structures would be passed to their offspring leading to emergence of a new species. scientists accepted that the environment has a role in directing phenotypic changes in an individual taking a body builder for example since his muscles will become huge due to continuous use of the muscles in exercises

but scientists rejected his theory of these acquired characteristics were inherited since phenotypically acquired characteristics that do not affect the genotype of an individual can't be inherited

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3 years ago

Match these items. 1. taxonomic category within a kingdom fermentation 2. plant that lives on decaying organic matter host 3. br

Sonja [21]

1. taxonomic category within a kingdom-phylum

This taxonomic category is at level below Kingdom and above Class (e.g Arthropoda, Chordata, Mollusca)

2. plant that lives on decaying organic matter-saprophyte

Saprotrophic plants or saprophytes use saprotrophic nutrition meaning that have extracellular digestion to process death organic matter.

3. break down of complex molecules into simpler ones- fermentation

Fermentation is a metabolic process that breaks down organic substrates in order to obtain energy. These processes are performed without the presence of oxygen (anaerobic processes).

4. multi-nucleated thread-like structures of fungi hyphae

This is one of the basic structural unit of fungi-long, filamentous structure that can form network-micelium. It is used for vegetative reproduction.

5. mycelia responsible for obtaining food from non-living organic material rhizoids

Rhizodis are unicellular or multicellular stuctures (branching hyphae) found in fungi that are similar to root hairs of plants. These structures are involved in saprotrophic nutrition of fungi.

6. asexual reproduction of yeast budding

Budding is a type of asexual reproduction in which a new organism develops from some generative anatomical part of the parent organism.

7. a group of hyphae mycelia

Mycelum is fungi’s vegetative body that consists of network of branching hyphae.

8. reproductive cells which can tolerate bad conditions spores

Spores are reproductive structure, part of the fungi life cycle, that can be involved in sexual or asexual reproduction, vary in structure that are formed in. Spores are usually haploid and unicellular.

9. structures which house the reproductive formation fruiting

Fruit is a structure in flowering plants that contains seed and it is responsible for seed dispersal and nutrition.

10. mutually positive relationship between two species symbiosis

Symbiosis is biological interaction between two species that can be mutualistic, commensalistic, or parasitic. More specifically, symbiosis refers to positive interaction for both members of it.

11. plant or animal which supports a parasite host

Parasitic relationship between species is the one in which organism (the parasite), lives on or in another organism (host).This relationship is positive for parasite but negative for the host.

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3 years ago

Define hydrophilic.

Vinil7 [7]

Hydrophilic (water-loving) or could be called water, it mean attracting water molecules as close as possible, the phospholipid is made up of a head that is polar, and a tail that is non polar or in another words called “hydrophobic” , this means that the head of the phospholipid is attracted to water molecules ( this helps you understand the structure of cell membrane formation). Steriod, a class of lipids, some hormones like cholesterol are made up of steroids. They maintain fluidity of cell membrane. Example: oestrogens

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3 years ago

Why does garlic take a long time to grow?

Art [367]

Answer:

When grown under the right conditions, garlic typically takes nine months to mature. Garlic grows best when it receives at least six hours of full sun daily. Plant garlic in the fall three to eight weeks before the first autumn freeze.

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3 years ago

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