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3 years ago

What is a virus envelope in biology?

1 answer:

3 0

The Virus Envelope is where the capsid is surrounded by lipid bilayer that contains viral proteins, usually including the proteins that would enable the virus to bind to the host cells. and is derived from the host cell membranes. They may help viruses avoid the host immune system. The viral envelope then fuses with the host's membrane, allowing the capsid and viral genome to enter and infect the host.

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Any will help! Please!!

vodomira [7]

heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee sorry person

5 0

3 years ago

Which of the following describes the function of lymph nodes?

Ber [7]

A: because the lymph are connected to the lymph nodes?

6 0

3 years ago

Read 2 more answers

Tall is dominant to short among pea plants. Choose appropriate symbols for these two traits and using these symbols write out a

tatuchka [14]

Answer:

See the answer below

Explanation:

Let the tallness be represented by T and the shortness by t.

True-breeding tall plant = TT

True-breeding short plant = tt

TT x tt

Tt Tt Tt TT

Genotypic ratio of offspring: 100% Tt

Phenotypic ratio of offspring: 100% tall (see the first attached image for the Punnet's square analysis)

(a) See the second attached image for the Punnet's square analysis.

Tt x Tt

TT Tt Tt tt

Expected genotypes

1/4 TT
1/2 Tt
1/4 tt

Expected phenotypes

Tall - 75%
Short - 25%

(b) Tt x tt

Tt Tt tt tt

Expected genotypes

1/2 Tt
1/2 tt

Expected phenotypes

Tall - 50%
Short - 50%

The kind of cross if referred to as test crossing.

TT TT Tt Tt

Expected genotypes

1/2 TT
1/2 Tt

Expected phenotypes

Tall - 100%

4 0

3 years ago

Give an organism representing each of the following groups or conditions: 1) Excavates 2) Rhizarians 3) Nonphotosyntheticstramen

mafiozo [28]

<h2>Organism and their group or conditions</h2>

Explanation:

Excavates:Excavates are the super groups of protists having an appearance which is asymmetrical and also having a feeding groove which is excavated from one side,organism representing this group is Euglena
Rhizarians:It is also a subgroup of protists, amoeboid in nature characterised by having pseudopodia (thin and needle like) which helps in engulfing food,organisms representing this group are Paulinella
Non photosynthetic stramenophiles-These are also a group of protists which are non photosynthetic in nature,have fine hair like projections on their flagella,organisms representing this group are water molds
Ciliated protist-These are a group of protists which are characterized by the presence of cilia(hair like organelles),found in rivers,lakes,oceans and soils;example of this group is Paramecia
Flagellated protist-These protists have a tail like projection called flagellum which hepls in circular motion,found mainly in moist environments;example of this group includes Trypanosoma
Amoeboid protist-These are a large of unicellular organisms having false structure called pseudopodia(helps in movement and feeding);an organism representing such group is Paramecium
Protist whose plastid likely arose by secondary endosymbiosis-Secondary endosymbiosis occurs when a living cell engulfs another eukaryote cell which has already undergone primary endosymbiosis(endosymbiosis means one symbiotic organism lives inside another);oragnisms which underwent such condition is diatoms
Protist with no functional mitochondria- Parabasalids are anaerobes protists which lack functional mitochondria
A protist that forms a calcium carbonate-Forams are protist which live in oceans and forms calcium carbonate in the form of a shell

7 0

3 years ago

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Hdl has a high proportion of ______, which makes it the heaviest (most dense) lipoprotein.

Sonja [21]

Hdl has a high proportion of protein, which makes it the heaviest (most dense) lipoprotein.

The five main subgroups of lipoproteins include high-density lipoprotein (HDL). All fat molecules (lipids) are transported throughout the body by lipoproteins, complex particles made of several proteins that float outside of cells and move throughout the body's fluids.

Through both direct and indirect channels, HDL mostly delivers cholesterol to the liver or to organs that can produce steroid hormones, such as the testicles, ovary, and adrenal glands.

Scavenger receptor BI (SR-BI), an HDL receptor that facilitates the selective uptake of cholesterol from HDL, is one type of HDL receptor that removes HDL. The indirect pathway, which is mediated by the cholesteryl ester transfer protein, is likely the most significant one in humans (CETP).

Following conversion into bile acids, the cholesterol supplied to the liver is either directly or indirectly excreted into the bile and, consequently, the intestine.

To learn more about lipoprotein refer to:

brainly.com/question/4475544

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1 year ago