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belka
2 months ago
7

You are studying a population of wild coyotes and notice that every three years there is an epidemic of a bacterial disease. Whi

ch of the following best explains this periodic cycling of the disease?
a) New coyotes are continuously born into the population.
b) Coyotes are dying from other causes over time.
c) During an outbreak, the proportion of coyotes who are sick with the disease slowly falls as they recover.
d) Coyotes from other populations, who have already caught and recovered from the disease, immigrate into the study population.
Biology
1 answer:
-BARSIC- [2.5K]2 months ago
5 0
I believe the correct answer is D.
My reasoning for this conclusion is that coyotes from various groups would have encountered diseases and potentially developed immunity (for those that survived), allowing them to migrate to other coyote populations where those individuals may introduce the illness.
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As the concentration of molecules outside a cell increases, more molecules will enter the cell because--
Tresset [2298]

Answer:

of diffusion

Explanation:

Particles travel along a concentration gradient without requiring energy. This indicates they transition from an area of high concentration to one of low concentration. This process takes place across a semi-permeable membrane, such as the cell membrane, via simple diffusion.

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2 months ago
On the planet Trogus, the population of Trogites have an autosomal gene, HDZ, with two alleles, T and t. T is dominant to t. Ind
s2008m [2378]

Answer:

The chance is 0.25 or 25%

Explanation:

To determine the answer, one should utilize a Punnett Square. This tool illustrates the genetic combinations produced from the mating of two parent organisms, allowing visualization of how their alleles combine in offspring. The Punnett Square consists of a grid with eight boxes; one parent's alleles are arranged along the top row, and the other's are positioned down the first column. Each allele from one parent matches with the alleles from the other, filling in the remaining boxes. This results in a genetic probability for the potential offspring's traits.

For the question posed, the cross involving parents who both have Tt (Tt x Tt) alleles is represented below, using the Punnett Square.

          T        t

T        TT       Tt

t        Tt        tt

Within these results, we see that "tt" appears just once among the four possible offspring. Thus, we have a ratio of 1/4, which converts to 0.25, indicating a 25% likelihood that the offspring from this cross will exhibit the "tt" genotype.

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2 months ago
Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the
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Complete question:

Fill in the sentences by matching tree names to the appropriate blanks. To do this, drag the names from the left into the correct spots in the sentences on the right. Ensure that every blank is filled with a term before clicking submit.

  • Elm
  • Maple
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  • Pine    
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1. Deciduous trees shed their leaves in a seasonal manner and comprise species such as ----- and ----.

2. Conifers have leaves that are typically thin and needle-like, while their seeds are found within cones. Conifers encompass ---- and -----.

3. Evergreens are plants that keep their leaves throughout all seasons, which include trees like ---, ---, and ---.

4. Hardwoods reproduce through flowers and showcase broad leaves; they consist of trees like ---, ---, and ---.

Answer:

1. Deciduous trees shed their leaves in seasonal cycles and consist of trees like elm and maple.

2. Conifer leaves are often thin and needle-shaped, while their seeds are found within cones. Conifers incorporate pine and cedar.

3. Evergreens are species that retain their leaves across all seasons and encompass trees such as Pine, Cedar, and Mango.

Explanation:    

  • Deciduous trees:  These species drop their foliage every year during the frigid and arid autumns and winters, which is the most challenging period throughout the year. New foliage emerges again during the warmer, wetter seasons when rainfall increases, specifically in spring and summer. The template forest biome is characterized by the presence of deciduous trees like oaks, maples, or elms, among other phanerophyte species.

1. Deciduous trees shed their leaves in seasonal cycles and consist of trees like elm and maple.

  • Conifers: This refers to the gymnosperm category. They are perennial, vascular, evergreen, woody plants. They are defined by their upright stems with secondary growth and the absence of vessels in their xylem tissue. Typically, their branches spread sideways, featuring needle-like foliage, unisexual flowers, and cone-encased seeds.

 2. Conifer leaves are often thin and needle-shaped, while their seeds are found within cones. Conifers incorporate pine and cedar.

  • Evergreens: These are perennial plants that retain their green leaves year-round.  These are the opposite of deciduous trees. Tropical forests are known for favoring these broadleaf plant species, such as mango, which thrive under abundant rainfall and higher average temperatures throughout much of the year. Additionally, many evergreen varieties are characteristic of boreal forests.  Pines, cypress, cedar, and sequoias are examples from the latter group.

3. Evergreens are species that retain their leaves across all seasons and encompass trees such as Pine, Cedar, and Mango.

  • Hardwoods: Angiosperms that possess xylem featuring vessels. These species exhibit high variability in form, texture, and size. They can reproduce both asexually or sexually through flowering, fruiting, and seeding. Additionally, they may be either evergreen or deciduous.

4. Hardwoods reproduce through flowers and showcase broad leaves; they consist of trees like Elm, Maple, and Mango.    

3 0
1 month ago
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Answer: The hormones secretin and cholecystokinin act on the pancreas, stomach, and gallbladder.

Explanation:

The duodenum produces two more hormones. Cholecystokinin (CCK), similar to enterogastrone, is released when fat is present in the chyme. CCK promotes the contraction of the gallbladder, which releases bile into the duodenum to help emulsify and digest fat more effectively. The other hormone from the duodenum is secretin. In response to the acidic chyme entering the duodenum, secretin triggers the pancreas to release bicarbonate, thereby neutralizing some of the acid.

6 0
2 months ago
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Which term is not correctly matched with its proper definition? A. Prototroph: possesses the same metabolic/growth capabilities
11111nata11111 [2571]

Response:

B. The meanings of the prefixes chemo- and photo- point to the source of electrons.

Explanation:

The term chemo refers to chemical/drug, whereas photo relates to light. This can be demonstrated through the following examples:

Chemotherapy = treatment using chemicals

Phototherapy = treatment utilizing light

6 0
2 months ago
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