BIOLOGY MIDDLE SCHOOL

How did chloroplasts end up in the producers cell

Answers

Answer 1
Answer:

Answer:

they were a paracite

Explanation:

the mitochondrial theorem or something. basically they live in a symbiotic relationship but originally it was two separate life forms. this is true for the mitochondria and chloroplasts

Answer 2
Answer:

Answer:

They begin as bacteria but are then enlarged by larger cells.

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The process by wich a solid changes to a liquid is

Answers

The process is melting
the answer is melting.

What organisms are non-flowering plants closely related to ?A. Green Algae

B. Flowering seed plants

C. Ferns and fern allies

D. Echinoderm

What organisms are insects closely related to?

A. Crustaceans

B. Mollusks

C. Segmented worms

D. Chelicerates

Answers

Answer of Q.1. is:

C] Ferns

While, Answer of Q.2 is ;

B] Mollusks

How does a human insulin gene become part of a bacterium's plasmid?

Answers

1. Scientist remove plasmids, small rings of DNA, from bacterial cells

2. An enzyme cuts open the plasmids DNA. The same enzymes removes the human insulin gene from its chromosomes 

3. The human insulin gets attaches the open ends of the plasmids to form a closed ring

4. Some bacterial cells take up the plasmids that have the insulin gene

5. When cells reproduce, the new cells will contain copies of the engineered
plasmids. The foreign gene directs the cell to reproduce human insulin.

What is the salinity of ocean water

Answers

35 parts per thousand

Sea water. Seawater is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of approximately 3.5%, or 35 parts per thousand. This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it.

How does heredity affect a species

Answers

Heredity, the sum of all biological processes by which particular characteristics are transmitted from parents to their offspring. The concept of heredity encompasses two seemingly paradoxical observations about organisms: the constancy of a species from generation to generation and the variation among individuals within a species. Constancy and variation are actually two sides of the same coin, as becomes clear in the study of genetics. Both aspects of heredity can be explained by genes, the functional units of heritable material that are found within all living cells. Every member of a species has a set of genes specific to that species. It is this set of genes that provides the constancy of the species. Among individuals within a species, however, variations can occur in the form each genetics, providing the genetic basis for the fact that no two individuals (except identical twins) have exactly the same traits.

What is the major reason why fungus-like protists are not fungi?

Answers

Fungal-like protists includes parasitic and predatory molds, water molds (Class Oomycota), and terrestrial slime molds (Myxomycota). 
These both move and lack the chitin that helps define true fungi. 
These fungal/amoeboid Myxomycota have a motile life stage fungi do not. However they do produce fruiting bodies to reproduce as do some fungi. Slime molds have an amoeboid phagotrophic (feeding) phase of their life cycle and use their pseudopodia to move and eat. In their mobile life stage they lack cell walls. 
Oomycota are aquatic fungi-like protists. They are water molds & plant parasites known as white rusts, and downy mildews. They have cell walls composed of cellulose, not chitin like true fungi. 
The sexual reproduction has heterogamous sex cells and asexual reproduction has motile spores (zoospores swim not sperm). The zoospores, with two flagella, are their asexual means of dispersal in water and damp soil.
Fungi have both sexual reproduction and asexual budding in yeast (that is not binary fission like bacteria). 
They are not capable of independent movement like an animal; they are sessile like a plant. 
Fungi are heterotrophic and use external enzymatic digestion of food stomach they digest their food outside their bodies and absorb the digested nutrients, this makes them osmotrophs instead of phagotrophs, which engulf their food.
Hope This helped! :D
The major, simple reason is that they can move while mushrooms cannot.
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